Transformers Committee

TRANSFORMERS COMMITTEE

September 1, 2013

Dear Committee Members and Guests:

As hosts of the Fall 2013 Meeting of the IEEE/PES Transformers Committee, and on behalf of the H-J Family of Companies, we cordially invite you and your spouse/companion to St Louis October 20–24. We are extremely excited to be your host for this event. All of us with the H-J Family of Companies (H-J Enterprises, H-J International, Engineered Power Components, H-J International Tianjin Electrical products & H-J Trading Company) consider this opportunity a distinct honor and privilege, and look forward to making your stay in St. Louis one of the most memorable.

The venue we choose for our meeting is the Renaissance Grand Hotel St. Louis in downtown, located at 800 Washington Avenue. The Renaissance St. Louis Grand Hotel is a remodeled and expanded hotel located on the Washington Avenue Loft District in downtown St. Louis, Missouri and is within walking distance of many of the famed St. Louis attractions and restaurants. Some of those include, The Gateway Arch, Bush Stadium (St. Louis Cardinals), Scott Trade Center (Blues Hockey), Edward Jones Dome (St. Louis Rams), Laclede’s Landing (dining/bars and nightlife), Union Station (dining and shopping), St Louis’ Old Cathedral, Kiener Plaza, Segway tour of Downtown, City Museum and World Aquarium (not your typical museum), Eugene Field’s House, and St. Louis Toy Museum and Lumiere Place Casino. For your convenience I have included a link to our “City Guide”: Downtown City Guide: http://www.downtownstl.org/docs/2013VisitorsGuide.pdf Downtown Parking map and Guide: http://www.downtownstl.org/docs/ParkingGuide2012.pdf Downtown Dining Guide: http://www.downtownstl.org/docs/DiningGuide2012.pdf

HOTEL INFORMATION: The Renaissance Grand Hotel St. Louis in downtown, 800 Washington Avenue, St. Louis, Missouri 63101, (314) 621-9600. The discounted group rate for standard guest rooms at the Renaissance Grand is US$139/night (single/double). The discounted group rate for upgraded “Club” level guest rooms is US$169/night (single/double), both including complimentary wireless Internet in the guest rooms. Visit the Committee's website for a link to registration, or call (314) 621-9600 or toll-free 1 800 (468) 3571. Mention the group "IEEE Transformers" to receive this special rate. The cut-off date for the group rate is September 27, 2013, PLEASE NOTE: We expect the hotel to sell-out before then.

Hotel Parking: The hotel on-site parking fee is $2.00 hourly, $18.00 daily. Valet parking is $28.00 daily. Valet cannot accommodate large SUV's and other oversize vehicles.

TRANSPORTATION: Lambert St. Louis International Airport (STL) is located approximately 15 miles NW of the hotel. Air Tran, Southwest and some Frontier flights utilize the East Terminal (Terminal 2) All other airlines use the Main Terminal (Terminal 1). Terminal shuttles are provided free and can be

THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. www.transformerscommittee.org

found at Exit 12. All Transportation options are located at both Terminals including a Merolink Station. The hotel does not provide shuttle service. Alternate transportation include: GO BEST Express (toll-free 1-877-785-4682) or book on-line at www.gobestexpress.com, fee: $21.00 (one way), on request.

Subway service (Metrolink station approximately .2 miles east of the hotel), fee: $3.50 (one way). Passenger pickup for Metrolink: Terminal: 1 Exit Door 1, upper level east of the American Airlines Credit Union. Terminal: 2 South of Terminal, accessible through the parking garage on all levels. Metrolink timetables and information can be found at: http://tripfinder.metrostlouis.org/ntp/en/timetables/

All rental car pick-up options are off airport property. Rental car counters are located in the lower level of Terminal 1 between Doors 12 and 17. Passenger Pick Up: Terminal 1 – Exit Door 17, Terminal 2 – Exit Door 12. Options include Hertz, National, Alamo, Avis, Budget, Enterprise & Thrifty. The hotel has an in-house Hertz location.

Taxis are also conveniently located at the airport (both terminals) estimated taxi fare is: $40.00 (one way). Passenger Pickup: Terminal: 1 Exit Door 14. Terminal: 2 Exit Door 12.

REGISTRATION: Register on-line at www.transformerscommittee.org for tours, social events and the meeting. Registering by September 27 entitles you to a $50 early registration discount. FYI, the on-line registration system will be disabled on October 16 to print name badges and to finalize counts. Note that the cost to walk-up register at the meeting is substantially higher than for registering on-line in advance and some social events/tours may be sold-out.

WEATHER: October weather in St Louis is very unpredictable this time of the year. However, just for you we have placed an order for GREAT fall weather GOOD LUCK! Daytime highs typically average 59°F (15°C), with night time lows around 43°F (6°C). We have had an extremely mild summer with moderate rain. Please check the forecast closer to meeting time. Dress for the meeting and all accompanying events is business casual.

SATURDAY EARLY-BIRD EVENT: For those of you arriving early, join your fellow meeting attendees at the one of the coolest art deco bowling alleys this side of the Mississippi. Enjoy the privacy of the Palm Room with 4 lanes of bowling, a pool table, and elegant seating areas with banquettes. Our group will have unlimited bowling while mingling and sipping cocktails from the cash bar. This rockin’ spot has been voted “Best Décor” in St. Louis, and given the title of “Best Addition to Washington Avenue.”

Dinner will consist of a pizza buffet with various options, mixed greens salad with house-made dressings, toasted ravioli, chicken tenders, quesadillas and non-alcoholic beverages. A premium cash bar with a full range of beer, wine and spirits will also be available.

Advance registration required. Register on-line when you register for the meeting.

SUNDAY EVENING RECEPTION: The H-J Family of Companies is proud to host this social renewal of friendships and formation of new acquaintances event in the Renaissance’s elegant Crystal Ball Room. A cash bar and complimentary hors d’oeuvres will be provided. Indicate your intention to attend this event during the on-line registration process.

THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. www.transformerscommittee.org

TUESDAY AWARDS LUNCHEON: Come join us and recognize the hard work of your peers. Advance registration required.

WEDNESDAY EVENING RECEPTION: This event will be unlike anything you have ever experienced! Set in the grand lobby of the Peabody Opera House, the evening will include an amazing dinner as well as an entertaining and interactive show. The Peabody Opera House first opened in 1934 and in 2011 underwent a $100 million renovation to restore it to its former glory. The evening will start with cocktails and passed hors d’oeuvres in one of the large lounges. Dinner will then be served in the spectacularly beautiful Grand lobby. Throughout the evening, tours of this amazing building highlighting its history and architecture will be offered. The dinner buffet will be prepared by one of the best resturant groups in St. Louis. There will be several amazing selections of starters, main courses, and sides. Dinner will be followed by dessert.

In addition to enjoying the building, the evening’s true entertainment will be the celebration of Tony n’ Tina’s Wedding during dinner. This is interactive theater where guests are more than a member of the audience; they are a member of the family. The fun starts with the ceremony and continues with the reception. With creative, warm, and hilarious improvisation, Tony n’ Tina’s Wedding is a wonderfuly fun event that is truly one of a kind.

SPOUSE/COMPANION TOURS (MONDAY): Begin the day at Missouri Botanical Garden. Stroll through this beautiful 79-acre National Historic Landmark where you will see the country’s largest Japanese Garden, an English Woodland Garden, Chinese Garden and the Rose Garden displaying 200 varieties of roses. Walk through the Temperate House containing plants of that region and the Climatron, which contains a rain forest. Also located at the gardens is the Kemper Center for Home Gardening. This is the only home gardening center of its kind in the United States.

Enjoy a delicious seasonally selected lunch along with a private cooking demonstration at the L’École Culinaire, a premier cooking school, located in the suburb of Ladue.

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artists and covering 84,000 sq. ft., the Cathedral interior is lined with 41.5 million pieces of glass tesserae employing over 8,000 shades of color. The magnificent mosaic work was begun in 1912 and completed in 1988 by the Ravenna Mosaic Co. The marble in the Cathedral comes from nearly every marble center in the world—over 70 different types are found in the sanctuary alone.

SPOUSE/COMPANION TOURS (TUESDAY): Beginning Tuesday’s tour is a visit to our nation’s tallest monument, The Gateway Arch, the soaring symbol of the Gateway to the West. It towers 630 feet above the banks of the Mississippi River and is part of the $30 million Jefferson National Expansion Memorial. While visiting the Arch you will have a choice between two experiences; (1) you can choose to ride the tram to the top of the Arch, or (2) view the movie on the construction of the Arch.

Lunch will be served at Soulard neighborhood favorite, Franco, winner of the Riverfront Time’s Best French Restaurant. The menu is built around locally grown produce and locally raised meats, with an emphasis on freshness and seasonal ingredients.

Next stop on your tour is the world famous Anheuser-Busch Brewery, the world’s largest brewer of beer. The brewery is situated in a 100- acre complex of over 71 red brick structures, several of which are National Historic Landmarks. Enjoy a one-and-a-half hour private tour that includes the beechwood aging cellars, the historic Brew House, and the Bevo packaging plant. A film about the brewing process and a close-up view of the famous Budweiser Clydesdales are highlights of the tour, along with everyone’s favorite, a stop in the hospitality room for a sampling of some Anheuser-Busch products.

TECHNICAL TOURS: (see individual flyers for more detail)

MONDAY 10/21/2013 . . . On Monday evening The H-J Family of Companies invites you to tour our manufacturing and testing facilities located in High Ridge, just southwest of St. Louis. Attendees will tour our state-of-the-art facilities for manufacturing castings/connectors, bushing assemblies and epoxy molded products. In addition tours will be offered of our new comprehensive test facility. Before the tours a dinner will be served catered by Annie Gunns, an award winning St. Louis restaurant. Space will be limited and open to all registered attendees. Buses will begin loading at the hotel at 6:00 p.m. with the last bus departing at 6:30 p.m. returning to hotel at approximately 10:00 p.m. For details, contact Jeffery Evitts at (636) 677-3421 X383 or email: [email protected]

TUESDAY 10/22/2013 . . . On Tuesday evening you are invited to attend a tour of ABB’s Power Transformer Facility located in St. Louis within minutes of the airport. Space will be limited and initially restricted to Transformers Committee members and Active Participants only. Buses will begin loading at the hotel at 6:00 p.m. with the last bus departing at 6:45 p.m. returning to hotel at approximately 10:00 p.m. Dinner will be served at factory. For details, contact Tomasz Soltyszewski at (314) 679-4597 or email: [email protected]

THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. www.transformerscommittee.org

ST. LOUIS HOT SPOTS: There are many GREAT things to do in and around the St. Louis area and you’ll find many of them FREE with an unbelievable number within walking distance of our hotel (refer to my list above). Also refer to:

http://www.downtownstl.org/docs/2013VisitorsGuide.pdf St Louis Visitors Guide: http://madden.imirus.com/Mpowered/book/vstg13/i2/p1 St. Louis History: http://explorestlouis.com/wp-content/uploads/2011/06/St.-Louis-History.pdf

We will be publishing a “What not to miss in St. Louis” list but here’s a brief snapshot . . . . The St. Louis gateway Arch (Free with exception of the tram ride to the top) Anheuser-Busch Brewery (free) Pappy’s BBQ (Man vs Food) Ted Drewes Frozen Custard (Man vs Food) Crown Candy Kitchen (Man vs Food) The Iron Barley (The Food Network)

ADDITIONAL MEETING INFORMATION. Along with this invitation letter, additional meeting information can be downloaded from the Committee’s website at www.transformerscommittee.org. • Meeting Registration Form. This is good guide to review fees before you begin the on-line registration process. On-line registration with a credit card is the primary method of payment. Contact us at [email protected] if another form of payment is desired. • Detailed Meeting Schedule & General Session Agenda. If any noteworthy changes occur, an updated schedule will be posted on the Committee's website a few days prior to the meeting. • Other Informational Flyers, including those for the Saturday Early-Bird Event, the Wednesday Social, Spouse/Companion Tours, and Technical Presentations (flyers for the Technical Presentations will be added to the website soon).

All of us at the H-J family of Companies are committed to making your visit to the Gateway to the West a memorable one! Please let us know if there is anything we can do to help in your preparations.

James Edward Smith Fall 2013 Meeting Host The H-J Family of Companies 3010 High Ridge Blvd., High Ridge, MO 63049 Phone: 636-677-3421 X 324 [email protected] www.h-j.com

The H-J Family of Companies: H-J Enterprises, H-J International, Engineered Power Components, H-J International Tianjin Electrical products, H-J Trading Company

THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. www.transformerscommittee.org

IEEE/PES TRANSFORMERS COMMITTEE Fall 2013 Meeting; St. Louis, Missouri USA -- Meeting Registration Summary and Fees --

Register on-line with credit card at www.transformerscommittee.org ("Next Meeting" page). Contact the Committee at [email protected] if an alternate form of payment is necessary. Each individual must register for meeting (with registration fee) to attend Sunday Reception or any social event or tour. Print a receipt at the end of the registration process. Paper receipts will NOT be provided at the meeting. Refund provided only if the request is received by Wednesday, October 16. Valid once confirmation email is received. US$25.00 service charge for a refund of entire registration; or US$10 for a partial refund. US Tax ID No. 13-1656633, Canadian Business No. 12563 4188, Euro Tax Registration No. EU826000081

REGISTRATION FEES After Sept 27, -- all fees in US$ dollars On or Before on or before On-site, -- all fees stated are "per person" Sept 27 Oct 16 at Meeting MEETING REGISTRATION Attendee, IEEE member (will be verified with IEEE) $250 $300 $400 Attendee, not IEEE member $275 $325 $425 Attendee, IEEE Life or Committee Emeritus (will be verified) $75 $125 $225 Spouse or Companion, and children age 12 and over $100 $150 $250 Attendee Registration Fee Includes: Entry into Meeting Area, Sunday Reception, coffee breaks, 4 breakfasts (M, T, W, Th) Spouse/Companion Registration Fee Includes: Sunday Reception, 4 breakfasts (M, T, W, Th) A Companion is a "significant other", boy/girlfriend, who is attending for non-commercial reasons, i.e., not attending the technical meetings, etc.). Spouses/companions & children (age 12 and over) must be registered for the meeting - with above fees - to attend any tour or social event. RECEPTION & LUNCHEONS Sunday Evening Welcome Reception -- cost included in meeting registration fee -- -- indicate your plan to attend the reception when you register Monday Standards Development Luncheon $20 $20 $20 -- all SC,WG,TF leaders are encouraged to attend Tuesday Awards Luncheon $30 $30 $30 -- indicate a meal selection: beef, chicken, or vegetarian SOCIAL EVENTS (see flyers for details) Saturday Evening Early-Bird Event: The Flamingo Bowl ** $45 $45 -- -- unlimited bowling, shoe rental, dinner, 5-10 min walk from hotel Wednesday Dinner Social: Peabody Opry House, T&T Wedding $85 $85 $85 -- dinner buffet, entertainment, building tours & transportation ** -- Attendance limited. Register early! SPOUSE/COMPANION TOURS (see flyers for details) Monday: Botanical Garden, Cathedral Basilica, cooking demo ** $85 $85 -- Tuesday: Gateway Arch, A-B Brewery, includes lunch ** $85 $85 -- ** -- Attendance limited. Register early! TECHNICAL TOURS (see flyers for details) Monday Evening: H-J Manufacturing & Test Facilities $0 $0 -- Tuesday Evening: ABB Transformer Facility *** $0 $0 -- *** -- Due to space limitations, tour registration initially limited to Committee Members and Active Participants.

INITIAL ISSUE – September 4

IEEE/PES TRANSFORMERS COMMITTEE www.transformerscommittee.org Fall 2013 Meeting; October 20-24 Hosted by The H-J Family of Companies Renaissance Grand Hotel; St. Louis, Missouri USA

NOTES: See Page 4 for a key to abbreviations.

SUB- ACTIVITY ROOM MEETING DATE/TIME ACTIVITY COM CHAIR CAP/ARR/AV ROOM Saturday, October 19 No Meeting Registration, No Transformers Committee Meetings 6:00 pm - 9:00 pm Early Bird Event: Dinner, bowling and fun at The Flamingo Bowl -- Indicate your desire to attend when registering on-line for the Committee Meeting. -- Meet in hotel lobby at 5:45 pm. The Flamingo Bowl is a short walk from the hotel. See flyer for details.

Sunday, October 20 No Technical Tours 1:00 pm - 5:30 pm Meeting Registration Conference Plaza Lobby Level 2:00 pm - 5:30 pm Administrative SC Admin. B. Chiu 28 US Westmoreland- -- Closed meeting, by invitation only (w/snack buffet) Kingsbury 3:00 pm - 5:30 pm NEMA Transformers ++ C. Drexler 26 US Pershing-Lindell -- Closed meeting, by invitation only (w/beverages) 6:00 pm - 8:00 pm Welcome Reception 400 Reception Crystal BR Grand Tower 20th Floor

Monday, October 21 -- Monday Breaks Sponsored by Cargill, Inc. ** 7:00 am - 4:00 pm Meeting Registration Conference Plaza Lobby Level 7:00 am - 6:00 pm Internet Cafe' 12 BD Washington Room 7:00 am - 7:50 am Newcomers Orientation D. Platts 60 CL Majestic B-C -- Breakfast Meeting; arrive early! (with buffet) Conf. Plaza -- Newcomers & Guests are encouraged to attend! 2nd Floor 7:00 am - 7:50 am Distribution SC Leaders Coordination S. Shull 16 CONF Westmoreland- -- Closed breakfast meeting, by invitation only (with buffet) Kingsbury 7:00 am - 8:00 am Breakfast - Attendees (no spouses/companions please) 270 RT (9/tbl) Majestic D Conf. Plaza (2nd) 8:00 am - 9:00 am Breakfast - Spouses/Companions (no meeting attendees please) 72 RT (8/tbl) Statler Room Grand Tower 9:00 am - 4:30 pm Spouses/Companions Tour: "Botanical Garden, Cooling Demo, Cathedral Basilica". Note Depart Time! Includes cooking demo & lunch at the "L’École Culinaire", a premier cooking school. -- Advance registration required. Buses depart the hotel at 9:00 am, and return approx 4:30 pm. 8:00 am - 9:15 am > General Session, Transformers Committee (Part 1) B. Chiu 200 CL S1 Majestic E -- All attendees are encouraged to attend 250 TH Conf. Plaza -- See separate document for meeting agenda 2nd Floor -- Session continued on Thursday -- Attendance recorded as eligibility for Committee membership 9:15 am - 9:30 am Break (beverages only) Landmark Foyer

** Contact Joe Watson ([email protected]) if you are interested in sponsoring a coffee-break at a future meeting.

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SUB- ACTIVITY ROOM MEETING DATE/TIME ACTIVITY COM CHAIR CAP/ARR/AV ROOM Monday, October 21 (continued) 9:30 am - 10:45 am WG 3-ph UG Dist. Transf. C57.12.24 UTNP G. Termini 80 MX Landmark 1 9:30 am - 10:45 am TF Combination of Oil Guides NEW! IF T. Prevost 80 MX Landmark 7 9:30 am - 10:45 am TF Winding Temp. Indicators IL P. McClure 120 MX Majestic B-C 9:30 am - 10:45 am WG External Dielectric Clearances DiTests E. Davis 150 MX S3 Landmark 5-6 9:30 am - 10:45 am WG Tertiary/Stabiliz. Windings PC57.158 PCS E. Betancourt 150 MX S3 Landmark 2-3 9:30 am - 10:45 am WG Failure Analysis & Report. C57.125 Power W. Binder 200 MX S3 Landmark 4 10:45 am - 11:00 am Break (beverages only) Landmark Foyer 11:00 am - 12:15 pm TBD 80 MX Landmark 1 11:00 am - 12:15 pm WG Moisture in Insulation PC57.162 IL T. Prevost 80 MX Landmark 7 11:00 am - 12:15 pm WG Overhead Distr. Transf. C57.12.20 Dist A. Traut 120 MX Majestic B-C 11:00 am - 12:15 pm WG PD Acoustic Detection C57.127 DiTests J. Harley 150 MX S3 Landmark 5-6 11:00 am - 12:15 pm WG PCS Rev. to Test Code C57.12.90 PCS M. Perkins 150 MX S3 Landmark 2-3 11:00 am - 12:15 pm WG Installation of Power Transf. C57.93 Power M. Lau 200 MX S3 Landmark 4 12:15 pm - 1:30 pm Lunch Meeting: Standards Development Review B. Bartley 200 RT (8/tbl) Majestic D -- Special Presentation: "Standards Development Issues", by B. Bartley & E. Spiewak -- Doors actually open ~12:00 pm. Come early, get a good seat, and start eating. -- Everyone is welcome to attend. All SC/WG/TF leaders are highly encouraged to attend. -- Advance reservation required ($20 for box lunch). No paper tickets. Admission verified at the door. 1:45 pm - 3:00 pm WG Standard Require for Secondary UTNP B. Wimmer 80 MX Landmark 1 Network Protectors C57.12.44 1:45 pm - 3:00 pm WG Dry-Type Gen. Require. C57.12.01 Dry T. Holdway 80 MX Landmark 7 1:45 pm - 3:00 pm WG 1-ph Padmount Dist. Transformers Dist A. Ghafourian 120 MX Majestic B-C C57.12.38 (12.21 & 12.25) 1:45 pm - 3:00 pm WG Less-Flammable Hydrocarbon IF D. Sundin 150 MX S3 Landmark 5-6 Insulating Liquid Guide C57.121 1:45 pm - 3:00 pm TF Audible Sound Revision to Test Code PCS R. Girgis 150 MX S3 Landmark 2-3 1:45 pm - 3:00 pm WG Tank Rupture & Mitigation PC57.156 Power P. Zhao 200 MX S3 Landmark 4 3:00 pm - 3:15 am Break (beverages only and treats) Landmark Foyer 3:15 pm - 4:30 pm SC HVDC Converter Transformers and HVDC M. Sharp 80 MX Landmark 1 Smoothing Reactors 3:15 pm - 4:30 pm WG Milli-amp Current Transf. C57.13.7 IT H. Alton 80 MX Landmark 7 3:15 pm - 4:30 pm WG 3-ph Padmount Distribution Dist R. Stahara 120 MX Majestic B-C Transformers C57.12.34 3:15 pm - 4:30 pm WG Natural Ester-Based Fluids C57.147 IF P. McShane 150 MX S3 Landmark 5-6 3:15 pm - 4:30 pm WG Dielectric Freq. Response PC57.161 DiTest A. Naderian 150 MX S3 Landmark 2-3 3:15 pm - 4:30 pm TBD 200 MX S3 Landmark 4 4:30 pm - 4:45 pm Break (beverages) Landmark Foyer WG Transformers Directly Connected Power Will not meet; balloting document to Generators PC57.116 4:45 pm - 6:00 pm WG Dry-Type O&M Guide C57.94 Dry D. Stankes 80 MX Landmark 1 4:45 pm - 6:00 pm WG PD in Bushings & PT/CTs PC57.160 DiTests T. Hochanh 80 MX Landmark 7 4:45 pm - 6:00 pm WG Step-Voltage Regulators C57.15 Dist C. Colopy 120 MX Majestic B-C 4:45 pm - 6:00 pm WG Oil Accept & Maint. Guide C57.106 IF B. Rasor 150 MX S3 Landmark 5-6 4:45 pm - 6:00 pm WG PCS Revisions to C57.12.00 PCS S. Snyder 150 MX S3 Landmark 2-3 4:45 pm - 6:00 pm TBD 200 MX S3 Landmark 4 6:00 pm- 10:00 pm Technical Tour 1: H-J Manufacturing & Test Facility; High Ridge, Missouri -- Space is limited, so register soon! Indicate desire to attend when you register on-line for the meeting. -- Buses begin loading at the hotel at 6:00 pm. Last bus departs at 6:30 pm. -- Dinner served at factory. Return approx 10:00 pm. -- For details, contact Jeff Evitts at +1.636.677.3421 ext 383 or .

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SUB- ACTIVITY ROOM MEETING DATE/TIME ACTIVITY COM CHAIR CAP/ARR/AV ROOM Tuesday, October 22 -- Tuesday Breaks Sponsored by Brockhaus Messtechnik ** 7:00 am - 12:00 pm Meeting Registration Conference Plaza 7:00 am - 6:00 pm Internet Cafe' 12 BD Washington Room 7:00 am - 8:00 am Breakfast - Attendees (no spouses/companions please) 270 RT (9/tbl) Majestic D 8:00 am - 9:00 am Breakfast - Spouses/Companions (no meeting attendees please) 72 RT (8/tbl) Statler Room 7:00 am - 8:00 am EL&P Delegation (End-users only please) J. Murphy 60 CL Majestic B-C -- Breakfast Meeting; arrive early (with buffet) 9:15 am - 3:30 pm Spouses/Companions Tour: "Gateway Arch, Anheuser-Busch Brewery". Includes lunch at "Franco" Restaur. Note Depart Time! -- Advance registration required. Buses depart the hotel at 9:15 am, and return approx 3:30 pm. 8:00 am - 9:15 am WG Req. for Instrument Transf. C57.13 IT R. McTaggart 80 MX Landmark 1 8:00 am - 9:15 am WG DPV Grid Transformers PC57.159 PCS H. Shertukde 80 MX Landmark 7 8:00 am - 9:15 am WG Enclosure Integrity C57.12.28, Dist R. Olen 120 MX Majestic B-C C57.12.29, C57.12.31, C57.12.32 8:00 am - 9:15 am WG Oil Reclamation Guide PC57.637 IF J. Thompson 150 MX S3 Landmark 5-6 8:00 am - 9:15 am TBD 150 MX S3 Landmark 2-3 8:00 am - 9:15 am WG Functional Life Tests, De-energized Power P. Hopkinson 200 MX S3 Landmark 4 Tap Changers (DETC) PC57.157 9:15 am - 9:30 am Break (beverages only) Landmark Foyer 9:30 am - 10:45 am TF Station Service PTs IT D. Wallace 80 MX Landmark 1 9:30 am - 10:45 am WG Std Require. for Bushings C57.19.01 Bush A. Del Rio 80 MX Landmark 7 9:30 am - 10:45 am WG Dist. Transf. Bar Coding C57.12.35 Dist L. Matthews 120 MX Majestic B-C 9:30 am - 10:45 am WG DGA Natural Ester Fluids PC57.155 IF P. Boman 150 MX S3 Landmark 5-6 9:30 am - 10:45 am TF Committee History Mtgs P. Balma 150 MX S3 Landmark 2-3 -- "Old Timers" welcome! 9:30 am - 10:45 am WG Wind Power Transf. P60076-16 PCS D. Buckmaster 200 MX S3 Landmark 4 10:45 am - 11:00 am Break (beverages only) Landmark Foyer WG Temperature Rise Test Procedures IL Will not meet; 11.1.2.2 proposal completed in Section 11 of C57.12.90 11:00 am - 12:15 pm WG Liquid-immersed Secondary Network UTNP B. Klaponski 80 MX Landmark 1 Transformers C57.12.40 11:00 am - 12:15 pm WG GSU Bushings PC57.19.04 Bush C. Arpino 80 MX Landmark 7 11:00 am - 12:15 pm WG Phase Shifting Transformers Power R. Ahuja 120 MX Majestic B-C IEEE/IEC 60076-57-1202 11:00 am - 12:15 pm WG Guide for DGA in LTCs C57.139 IF D. Wallach 150 MX S3 Landmark 5-6 11:00 am - 12:15 pm WG Impulse Tests C57.138 (Distribution) DiTests J. Crotty 150 MX S3 Landmark 2-3 11:00 am - 12:15 pm WG Loss Evaluation Guide C57.120 PCS A. Traut 200 MX S3 Landmark 4 12:15 pm - 1:30 pm Awards Luncheon E. Smith 256 RT (8/tbl) Majestic D -- Doors open ~12:00 pm. Come early, get a good seat, and start eating. -- Advance registration is necessary. Paper tickets are not provided. Admission verified at the door. WG Life Extension C57.140 Power Will not meet; balloting document 1:45 pm - 3:00 pm TBD 80 MX Landmark 1 1:45 pm - 3:00 pm WG Revision to Low Frequency Tests DiTests B. Poulin 80 MX Landmark 7 1:45 pm - 3:00 pm WG Distr. Substation Transf. C57.12.36 Dist J. Murphy 120 MX Majestic B-C 1:45 pm - 3:00 pm WG DGA Factory Temperature Rise IF J. Thompson 150 MX S3 Landmark 5-6 Tests PC57.130 1:45 pm - 3:00 pm TBD 150 MX S3 Landmark 2-3 1:45 pm - 3:00 pm TF Transformer Efficiency and Dist P. Hopkinson 200 MX S3 Landmark 4 Loss Evaluation (DOE Activity) 3:00 pm - 3:15 pm Break (beverages and treats) Landmark Foyer

** Contact Joe Watson ([email protected]) if you are interested in sponsoring a coffee-break at a future meeting.

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KEY Note: A PC projector will be furnished in each meeting room. Arrive early to ensure that equipment operates/syncs correctly. Overhead projectors are available from the hotel with advance notice. BD -- boardroom > -- activity continued into another session / from another session US -- U-shape table ++ -- not a Transformers Committee activity TBD = "To Be Determined" RT -- multiple roundtables FC = flip chart; S1 = sound (special set-up) CL -- classroom seating (w/head table for 2) S2 = stand mic in front only; S3 = one stand mic in front & stand mic(s) at mid-room TH -- theater seating (w/head table for 2) MX -- mix classroom & theater (w/head table)

SUB- ACTIVITY ROOM MEETING DATE/TIME ACTIVITY COM CHAIR CAP/ARR/AV ROOM Tuesday, October 22 (continued) WG Dry-Type Loading Guide PC57.96 Dry Will not meet; balloting complete. 3:15 pm - 4:30 pm TBD 80 MX Landmark 1 3:15 pm - 4:30 pm TF Switching Transients Induced by PCS J. McBride 80 MX Landmark 7 Transf/Breaker Interaction C57.142 3:15 pm - 4:30 pm WG Test Data Reporting C57.12.37 Dist J. Crotty 120 MX Majestic B-C 3:15 pm - 4:30 pm WG Application of High-Temp Insulation IL M. Franchek 150 MX S3 Landmark 5-6 Materials, IEEE P-1276 3:15 pm - 4:30 pm WG Revision to Gas Guide C57.104 IF R. Ladroga 150 MX S3 Landmark 2-3 3:15 pm - 4:30 pm TBD 200 MX S3 Landmark 4 4:30 pm - 4:45 pm Break (beverages only) Landmark Foyer 4:45 pm - 6:00 pm TBD 80 MX Landmark 1 4:45 pm - 6:00 pm WG Neutral Grounding Devices PC57.32 PCS S. Kennedy 80 MX Landmark 7 4:45 pm - 6:00 pm WG Tank Pressure Coordinat. C57.12.39 Dist C. Gaytan 120 MX Majestic B-C 4:45 pm - 6:00 pm TF Moisture in Oil IF B. Rasor 150 MX S3 Landmark 5-6 4:45 pm - 6:00 pm WG Transf. Paralleling Guide PC57.153 Power T. Jauch 150 MX S3 Landmark 2-3 4:45 pm - 6:00 pm WG Revisions to Impulse Test Sections DiTests TBD 200 MX S3 Landmark 4 of C57.12.00 and C57.12.90 6:30 pm- 10:00 pm Technical Tour 2: ABB Transformer Facility; St. Louis, Missouri -- Space is limited; initially only Committee Members and Active Participants. -- Buses begin loading at the hotel at 6:00 pm. Last bus departs at 6:45 pm. -- Dinner served at factory. Return approx 10:00 pm. -- For details, contact Mr. Tomasz Soltyszewski at +1.314.679.4597 or .

Wednesday, October 23 -- Wednesday Breaks Sponsored by Doble Engineering, Co. *** No Meeting Registration, No Technical Tours, No Spouse/Companion Tour 7:00 am - 6:00 pm Internet Cafe' 12 BD Washington Room 7:00 am - 8:00 am Breakfast - Attendees (no spouses/companions please) 256 RT (9/tbl) Majestic D 8:00 am - 9:30 am Breakfast - Spouses/Companions (no meeting attendees please) 72 RT (8/tbl) Statler Room 7:00 am - 7:50 am SC Meetings Planning Mtgs G. Anderson 24 CL Majestic A (with buffet) 7:00 am - 8:30 am IEC TC-14 Technical Advisory Group ++ P. Hopkinson 60 CL Majestic B-C -- Breakfast Meeting; arrive early (with buffet) -- All interested individuals welcome 8:00 am - 9:15 am SC Instrument Transformers IT R. McTaggart 150 MX S3 Landmark 5-6 8:00 am - 9:15 am SC Insulation Life IL B. Forsyth 300 MX S3 Landmark 1-2-3-4 9:15 am - 9:30 am Break (beverages only) Landmark Foyer 9:30 am - 10:45 am SC Bushings Bush P. Zhao 150 MX S3 Landmark 5-6 9:30 am - 10:45 am SC Distribution Transformers Dist S. Shull 300 MX S3 Landmark 1-2-3-4 10:45 am - 11:00 am Break (beverages only) Landmark Foyer

*** Contact Joe Watson ([email protected]) if you are interested in sponsoring a coffee-break at a future meeting.

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SUB- ACTIVITY ROOM MEETING DATE/TIME ACTIVITY COM CHAIR CAP/ARR/AV ROOM Wednesday, October 23 (continued) 11:00 am - 12:15 pm SC UG Transf. & Network Protectors UTNP C. Niemann 150 MX S3 Landmark 5-6 11:00 am - 12:15 pm SC Dielectric Tests DiTests M. Franchek 300 MX S3 Landmark 1-2-3-4 12:15 pm - 1:30 pm Lunch (on your own) 1:30 pm - 2:45 pm SC Dry Type Dry C. Johnson 150 MX S3 Landmark 5-6 1:30 pm - 2:45 pm SC Power Transformers Power J. Watson 300 MX S3 Landmark 1-2-3-4 2:45 pm - 3:00 pm Break (beverages and treats) Landmark Foyer 3:00 pm - 4:15 pm SC Insulating Fluids IF S. McNelly 150 MX S3 Landmark 5-6 3:00 pm - 4:15 pm SC Performance Characteristics PCS E. teNyenhuis 300 MX S3 Landmark 1-2-3-4 4:15 pm - 4:30 pm Break (beverages only) Landmark Foyer 4:30 pm - 5:30 pm SC Standards Stds B. Bartley 300 MX S3 Landmark 1-2-3-4 6:00 pm - 10:00 pm Dinner Social: Peabody Opera House, with Tony n' Tina's Wedding. Advance registration is necessary. -- Buses begin shuttling from the hotel at 5:45 pm. Last bus departs the hotel at 6:30 pm. -- Begin with cocktails, hors d'oeuvres, tours of buildling. Dinner & entertainment begins at 7:00 pm. -- Buses begin shuttling back to hotel at 9:00 pm, and continue shuttling until 10:00 pm. -- Paper tickets are not provided. Admission verified with a registration list as you enter the Opera House.

Thursday, October 24 No Meeting Registration, No Spouses/Companions Tours, No Technical Tours, No Internet Cafe'

7:00 am - 8:00 am Breakfast - Attendees (no spouses/companions please) 256 RT (9/tbl) Majestic D 8:00 am - 9:30 am Breakfast - Spouses/Companions (no meeting attendees please) 64 RT (8/tbl) Statler Room 8:00 am - 9:15 am Technical Presentation #1: "TBD", 200 CL S1 Majestic E by TBD 200 TH Conf. Plaza Sponsored by TBD SC. See flyer on website 2nd Floor 9:15 am - 9:30 am Break (beverages only) Majestic Foyer 9:30 am - 10:45 am Technical Presentation #2: "TBD", 200 CL S1 Majestic E by TBD 200 TH Sponsored by TBD SC. See flyer on website 10:45 am - 11:00 am Break (beverages only) Majestic Foyer > 11:00 am - 12:00 pm General Session, Transformers Committee (Part 2) B. Chiu 200 CL S1 Majestic E -- All attendees are encouraged to attend 200 TH -- See separate document for meeting agenda Lunch (on your own) 1:30 pm - 5:00 pm EPRI Transformers Task Force ++ L. Van der Zel 28 US Westmoreland/ -- Closed meeting, by invitation only (w/beverages) Kingsbury Room

Friday, October 25 No Transformer Committee Meetings, No Internet Cafe', No Social Events or Tours.

*** Contact Tom Prevost ([email protected]) if you are interested in making a technical presentation at a future meeting.

FUTURE COMMITTEE MEETINGS Spring 2014 - March 23-27; Savannah, Georgia USA. Hosted by EFACEC Fall 2014 - October 19-23 or 26-30; USA location to be determined

page 5 Renaissance Grand Hotel 800 Washington Avenue; St. Louis, Missouri 63101 (314) 621-9600

page 6 IEEE/PES TRANSFORMERS COMMITTEE Fall 2013 Meeting; St. Louis, Missouri USA Agenda - General Session

Chair: Bill Chiu Vice Chair: Don Platts Secretary: Stephen Antosz Treasurer: Greg Anderson Awards Chair/Past Chair: Ed Smith Standards Coordinator: Bill Bartley

General Session, Part 1 Monday, October 21; 8:00 am - 9:15 am

1. Welcome and Announcements ...... Bill Chiu 2. Approval of Minutes from Spring 2013 Meeting ...... Bill Chiu 3. Chair’s Report ...... Bill Chiu 4. Vice Chair’s Report ...... Don Platts 5. Secretary's Report ...... Stephen Antosz 6. Treasurer's Report ...... Greg Anderson 7. Report from Administrative Subcommittee Meeting ...... Bill Chiu 8. Standards Subcommittee ...... Bill Bartley 9. Editor’s Report ...... Sanjib Som 10. Reports from Liaison Representatives 10.1. Standards Coordinating Committee, SCC No. 4 (Electrical Insulation) ...... Paulette Payne Powell 10.2. Standards Coordinating Committee, SCC No. 18 (NFPA/NEC) ...... Ned Brush 10.3. IEC TC-14 Technical Advisor to USNC ...... Phil Hopkinson 10.4. CIGRE ...... Raj Ahuja 11. Hot Topics for the Upcoming Week ...... Subcommittee Chairs 12. New Business & Wrap-up ...... Bill Chiu

General Session, Part 2 Thursday, October 24; 11:00 am - 12:00 pm

1. Chair's Remarks and Announcements ...... Bill Chiu 2. Meetings Subcommittee ...... Greg Anderson 3. Reports from Technical Subcommittees (decisions made during the week) 3.1. Insulation Life ...... Bruce Forsyth 3.2. Performance Characteristics ...... Ed teNyenhuis 3.3. Power Transformers ...... Joe Watson 3.4. Underground Transformers & Network Protectors ...... Carl Niemann 3.5. Bushings ...... Peter Zhao 3.6. Dry Type Transformers ...... Chuck Johnson 3.7. Distribution Transformers ...... Steve Shull 3.8. Dielectric Tests ...... Mike Franchek 3.9. HVDC Converter Transformers & Reactors ...... Mike Sharp 3.10. Instrument Transformers ...... Ross McTaggart 3.11. Insulating Fluids ...... Sue McNelly 4. Additional Report from Standards Subcommittee (issues from the week) ...... Bill Bartley 5. New Business (continued from Monday) and Wrap-up ...... Bill Chiu

September 3

Spouse/Companion Tour Monday, October 21 — Missouri Botanical Garden — Cooking Demo Cathedral Basilica of St. Louis

Begin the day at Missouri Botanical Garden. Stroll through this beautiful 79-acre National Historic Landmark where you will see the country’s largest Japanese Garden, an English Woodland Garden, Chinese Garden and the Rose Garden displaying 200 varieties of roses. Walk through the Temperate House containing plants of that region and the Climatron, which contains a rain forest. Also located at the gardens is the Kemper Center for Home Gardening. This is the only home gardening center of its kind in the United States.

Enjoy a delicious seasonally selected lunch along with a private cooking demonstration at the L’École Culinaire, a premier cooking school, located in the suburb of Ladue.

After your lunch and cooking demonstration, it’s on to the Cathedral Basilica of St. Louis, known to locals as the New Cathedral. Built in 1907 this is one of only 40 basilicas in the United States. Known for its Byzantine interior, this awe-inspiring landmark contains one of the largest collections of mosaics in the world. Created by 20 different artists and covering 84,000 sq. ft., the Cathedral interior is lined with 41.5 million pieces of glass tesserae employing over 8,000 shades of color. The magnificent mosaic work was begun in 1912 and completed in 1988 by the Ravenna Mosaic Co. The marble in the Cathedral comes from nearly every marble center in the world -- over 70 different types are found in the sanctuary alone. Itinerary 9:00 am: Depart hotel for Missouri Botanical Garden 9:15-11:15 am: Tram ride and tour of the Botanical Gardens 11:40 pm: Cooking demonstration and lunch at L'École Culinaire 2:00 pm: Tour of the Cathedral Basilica of St. Louis 3:30 pm: Stop at Ted Drewes for frozen custard 4:30 pm: Return to hotel (approximate time)

Attendance will be limited… REGISTER EARLY!

Spouse/Companion Tour Tuesday, October 22 — St. Louis Arch & Anheuser - Busch Brewery —

Beginning today’s tour is a visit to our nation’s tallest monument, The Gateway Arch, the soaring symbol of the Gateway to the West. It towers 630 feet above the banks of the Mississippi River and is part of the $30 million Jefferson National Expansion Memorial. While visiting the Arch you will have a choice between two experiences; (1) you can choose to ride the tram to the top of the Arch, or (2) view the movie on the construction of the Arch.

Next stop on your tour is the world famous Anheuser-Busch Brewery, the world’s largest brewer of beer. The brewery is situated in a 100-acre complex of over 71 red brick structures, several of which are National Historic Landmarks. Enjoy a one-and-a-half hour private tour that includes the beechwood aging cellars, the historic Brew House, and the Bevo packaging plant. A film about the brewing process and a close-up view of the famous Budweiser Clydesdales are highlights of the tour, along with everyone’s favorite, a stop in the hospitality room for a sampling of some Anheuser-Busch products.

Itinerary 9:15 am: Depart hotel for the Arch 9:30 - 11:30 am: Arch Tour 11:45 pm: Lunch at Franco 1:15 - 3:00 pm: Private tour of Anheuser Busch 3:30 pm: Return to Hotel (approximate time)

Lunch Menu Lyonnais Salad (bitter greens, bacon, croutons, poached egg, Sherry-Dijon vinaigrette) Entrée Choices (includes a wine pairing): 1. Bistro Steak, pomme frites, béarnaise 2. Smoked Tomato Risotto, parmesan, spinach, balsamic reduction 3. Chicken Confit Ravioli, arugula, shallots, bacon-saffron cream sauce Apple Tarte Tatin

Attendance will be limited... REGISTER EARLY!

Evening Dinner Social Wednesday, October 23 — Peabody Opera House — Tony n’ Tina’s Wedding

This event will be unlike anything you have ever experienced! Set in the grand lobby of the Peabody Opera House, the evening will include an amazing dinner as well as an entertaining and interactive show. The Peabody Opera House first opened in 1934 and in 2011 underwent a $100 million renovation to restore it to its former glory. The evening will start with cocktails and passed hors d’oeuvres in one of the large lounges. Dinner will then be served in the spectacularly beautiful grand lobby. Throughout the evening, tours of this amazing building highlighting its history and architecture will be offered.

The dinner buffet will be prepared by one of the best restaurant groups in St. Louis. There will be several amazing selections of starters, main courses, and sides. Dinner will be followed by dessert.

Itinerary 5:45 pm: Buses will begin departing from the hotel. The last bus departs at 6:30 pm. Begin with cocktails, hors d'oeuvres, tours of the building. 7:00 pm: Dinner & entertainment begins. 9:00 pm: Buses will begin returning to the hotel.

Paper tickets will not be provided. Admission will be verified with a registration list prior to boarding the bus for the event.

In association with the Fall 2013 Meeting St. Louis welcomes the IEEE/PES Transformers Committee

Factory location You are invited to a tour of ABB‘s The factory in St. Louis, MO is ABB’s focused factory for transformer facility located in St. medium power transformers in North America, as well as service and repair center for the US, Canada, and Mexico. It is 10 Louis, Missouri, on Tuesday evening, minutes from the Lambert – St. Louis International Airport. October 22. Product portfolio −− New medium power transformers manufactured withTrafo- Itinerary - StarTM technology −− 6:00 p.m. - Buses will begin loading at the hotel with last bus −− Core form: GSU’s, autos, substation and auxiliary units departing at 6:45 p.m. −− Transformer remanufacturing and engineering service −− Dinner will be served at factory −− Fleet assessments to analyze maintenance criteria and −− Return to hotel at approximately 10:00 p.m. associated risk of failure −− Transformer condition analysis and testing services −− Field repair and retrofit Important information - −− Space is limited - initially only Committee Members and Major developments Active Participants −− More than 35 years of experience in transformer repair and- −− Spouses are welcome service −− No cameras please −− BIOTEMP® ester based fluids for of up to 200 MVA −− Be sure to wear your IEEE name badge −− Ultra low sound transformer technology −− Indicate desire to attend when you register on-line for the −− Mature Transformer Management ProgramTM - risk, life and meeting fleet assessment to optimize maintenance, extend life and reduce risk of transformer failure. For details, contact Tomasz Soltyszewski at −− Dynamic Transformer Management ProgramTM - near real- +1 314 679 4597 or email: [email protected] time data collection, analysis and recommendations for opti- mized transformer asset management and failure mitigation. −− Geomagnetically Induced Current (GIC) analysis and risk mitigation IEEE/PES Transformers Committee Fall 2013 Meeting St. Louis, Missouri USA

"Preparation of Transformer Specifications"

-- Technical Presentation -- Thursday, October 24, 2013

by Krishnamurthy Vijayan and Vallamkonda Sankar

1. Abstract

This tutorial will assist end-users and consultants in preparation of transformer specifications to procure economical and reliable transformers which meet system and operational needs. By knowing the implications of transformer parameters on operation and on cost, functional specification can be prepared. Some topics covered in the tutorial are: ratings, voltages, transformer types, vector groups, loss capitalization, over-excitation, insulation levels, cooling types, sound levels, tap range, taps in HV or in LV, operation of taps to compensate input voltage fluctuations or to compensate for regulation, impedance, overloads, short-circuits, accessories, parallel operation, alternative solutions etc.

By knowing the usefulness and limitations of standards (IEEE C57.12.00, CSA C-88, IEC 60076-1 etc.), their reference in the specification can be better understood. Risks and limitations when the standards are used solely as specifications and when the transformer design engineers are considered as system engineers are elaborated.

Knowledge of available materials and accessories used in transformers will help further to evolve a specification that would help the end user. The tutorial provides some of this information.

2. Learning Objectives

This tutorial will help transformer personnel to learn/familiarize the following:

• Work towards evolving a functional specification. • Minimize ambiguity in the transformer specification to get a satisfactory product. • Understand the significance of capitalization cost. • Understand the importance of information to be included in the specifications such that user requirements are understood and fully met by bidders. • Understand the usefulness and limitations of IEEE, IEC and CSA standards. • Gain knowledge on factors that influence MVA rating, number of phases, winding connections, vector groups etc. • Understand the consequence of specifying different insulation levels with reference to standards • Avoid requirements in specification that are ambiguous or that will add cost with no benefit to the user. • Establish a quote process beneficial to users and manufacturers. • Effective tender review and design review meetings. • Use of globalization to get maximum benefits. • To encourage innovations.

page 1 of 2 3. Learning Outcomes

Attendees will gain understanding of the following by attending this tutorial.

• Achieve improved team work between manufacturer and user by understanding and appreciating each other’s efforts. • Develop a functional specification. • Procure energy efficient transformers with minimum capitalized cost. • Determine major parameters like ratings, insulation levels, impedance, capitalization of losses, sound levels without ambiguities. • Decide winding connections (wye, delta etc.) and vector groups (Yy, Yd, Dy, etc.) to reap maximum benefits and to avoid design complications. • Knowledge for selection of type of taps and their location (in HV or in LV, in wye winding, in delta winding etc.). • Understand influences of taps on short-circuit stresses and on dielectric stresses. • Knowledge for deciding the location of the taps (in input winding or in output winding) and their operation for constant flux taps or variable flux taps or combined voltage variation taps. • Specify requirements for parallel operation. • Information to be included on the data sheets and on the nameplate. • Tests to be specified. • Salient precautions in transport and during the installation.

4. Presenters’ Biographies

K. Vijayan Master’s in High Voltage Engineering from Indian Institute of Science, Bangalore, India. Member of IEEE. Has 25 years of experience in design and development of EHV transformers and reactors. Presently working as Head of Electrical Engineering at CG Power Systems Canada Inc., Published many papers on transformer technology that includes, development of phase shifting transformers, universal spare transformers, and high voltage power transformers insulation design. Won best paper award at Trafotech conference, in Mumbai, India in 2010.

V. Sankar Master’s in High Voltage Engineering from Guindy Engineering College, Chennai, India. Life Member of IEEE. Worked for 48 years with transformer manufacturers and users in Asia, England and Canada. Presented three tutorials at IEEE Transformers Committee Meetings. Published many papers on transformer topics. The latest publication is "Five-Limbed Transformer Cores" in March 2013 Journal of Central Power Research Institute, Bangalore.

page 2 of 2 IEEE/PES Transformers Committee Fall 2013 Meeting St. Louis, Missouri USA

"Effects of DC Currents on Transformers Under Service Conditions"

-- Technical Presentation -- Thursday, October 24, 2013

by Alfons Schrammel and Ron Sharp

1. Abstract

In today’s current climate, environmental compliance requires almost noiseless transformer designs. There is also a drive to utilize transformers with low core losses in order to satisfy the aim of minimized carbon dioxide related greenhouse gasses.

In order to achieve these objectives, the most optimal solution is the use of highly efficient grain oriented electrical core steel and the application of the most advanced core stacking techniques. In addition, transformer cores are usually operated at low flux densities and relatively low excitation currents.

However, recent investigations into transformers that have unusually high noise levels in service, when compared to the values which were measured during factory acceptance testing, have revealed that as a result of the techniques employed above, low DC currents may be the source of this phenomenon.

Presently, the origins of low DC currents have not been fully investigated, but the following sources have been identified: power electronics from large drives or wind farms, railroad or subway systems and galvanic corrosion protection of pipelines. There is even the possibility that system transient behavior or frequent energization and de-energization of transformers in networks may also contribute to low DC currents and as a result unusually high noise levels in service.

In order to combat this phenomenon, there are currently two possibilities, namely; the use of mitigation techniques which reduce or prevent low DC currents from impacting on the transformer, or by ensuring that the transformer design is less susceptible to low DC currents.

This tutorial will discuss the possible sources of low DC currents, its effect on transformers in service and the ways in which both the manufacturer and end user can deal with this phenomenon.

page 1 of 2 2. Learning Objectives

This tutorial will help individuals involved with transformers to:

• Recognize the changing environment for transformers in transmission systems regarding disturbances. • Understand the impact of low magnitude DC currents on the performance of transformers. • Accept the need to explore the current conditions in their transmission system and the future trends. • Specify any unusual system conditions not covered by international standards. • Investigate possible mitigation solutions.

3. Learning Outcomes

As a result of attending this tutorial session, participants will gain an understanding and will then be enabled to:

• Evaluate the impact of low magnitude DC currents in their area of responsibility. • Understand the influence of design parameters on the susceptibility to low magnitude DC currents. • Adapt acceptance test requirements in the specification for future projects if necessary. • Introduce the newest mitigation technologies in up-coming projects.

4. Presenters’ Biographies

Alfons Schrammel is Engineering Manager of SIEMENS Global Technology Center for Large Power Transformers. After graduation at the Technical University of Graz in the field of high voltage engineering, he started in 1986 as a Design Engineer for large power transformers in ELIN factory in Weiz, Austria. In 1990 he changed to technical project management and was responsible for special projects as the first 500 kV phase shifting transformers ever built. In 1996 he became head of the electrical design department and was involved in the technology harmonization program within the VATECH Transformers group and since 2007 within the SIEMENS Transformers group. He is IEEE member and currently active in the working group for development of the Dual Logo IEEE/IEC Standard for "Liquid Immersed Phase Shifting Transformers".

Ron Sharp is a Principal Engineer in the Substation Engineering Services Department of Pacific Gas and Electric Company. After graduating at the University of California-Berkeley in 1972 with an electrical engineering and computer science degree, he began working at PG&E. He has worked in various activities at PG&E including substation construction-design-maintenance and underground transmission. He is an IEEE member and has taken part in various working committees. At PG&E he currently is involved in addressing substation issues in insulator/bushing failures, animal mitigation, energy storage, EHV reactive equipment maintenance/repairs and equipment noise.

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