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conEdison a conEdison, inc. company John J. Mucci Vice President Engineering and Planning September 25, 2006 Hon. Jaclyn A. Brilling Secretary New York State Department of Public Service Three Empire State Plaza Albany, New York 12223 Re: Part 105 Filing Concerning Long Island City Electric Service Restoration Dear Secretary Brilling: In accordance with Part 105.4(c) of the Public Service Commission's rules, enclosed for filing is Consolidated Edison Company of New York, Inc's review of its preparation and service restoration performance for the power outages that occurred in the Long Island City network during the week of July 16, 2006. Please contact me if you need additional information. ;§1]'~.John MuccI Vice President Electric Operations Enclosure (original and five copies) Consolidated Edison Company of New York, Inc. 4 Irving Place New York NY 10003 2124604263 Part 105 Compliance Filing by Consolidated Edison Company of New York, Inc. Event Preparation, Recovery, and Communication Power Outages in Northwest Queens July 2006 September 25, 2006 TABLE OF CONTENTS Page 1. INTRODUCTION.......................................................................................................... 1-1 2. OVERVIEW OF LONG ISLAND CITY OUTAGE .................................................. 2-1 3. ONGOING PREPARATION FOR HEAT WAVES.................................................. 3-1 3.1 General Heat Wave Classification and Escalation..................................................... 3-1 3.2 Emergency Response Structures................................................................................ 3-3 3.3 Electric Operations Emergency Plan ......................................................................... 3-4 3.4 Summer 2006 Heat Event Preparations ..................................................................... 3-5 3.5 System Readiness....................................................................................................... 3-8 3.6 Customer Readiness................................................................................................. 3-13 4. LONG ISLAND CITY EVENT RESPONSE.............................................................. 4-1 4.1 System Operations Pre-Event Actions....................................................................... 4-1 4.2 Brooklyn/Queens Pre-Event Actions......................................................................... 4-2 4.3 Substation Operations Pre-Event Actions.................................................................. 4-2 4.4 Corporate Emergency Response Center .................................................................... 4-3 5. LONG ISLAND CITY RESTORATION.................................................................... 5-1 5.1 Response to Primary Feeder Outages ........................................................................ 5-1 5.2 Transformer Response ............................................................................................... 5-7 5.3 Substation Response .................................................................................................. 5-8 5.4 Demand Reduction Actions..................................................................................... 5-10 5.5 Outage Assessment – Determining Customers Interrupted..................................... 5-18 5.6 Secondary Underground Assessment ...................................................................... 5-23 5.7 Mutual Assistance, Contractor, and Company Forces............................................. 5-27 5.8 Emergency Generators............................................................................................. 5-31 5.9 Environment, Health and Safety Response.............................................................. 5-36 6. COMMUNICATIONS .................................................................................................. 6-1 6.1 Communication with Department of Public Service ................................................. 6-1 6.2 Customer Communications........................................................................................ 6-6 6.3 Call Center Activities............................................................................................... 6-13 6.4 Call Center Volume ................................................................................................. 6-15 6.5 Life-Sustaining Equipment (LSE) ........................................................................... 6-23 i 6.6 Medical-Hardship Customers .................................................................................. 6-24 6.7 Large and Critical Customer-Outreach Initiatives................................................... 6-25 6.8 Demand-Side Management Communications ......................................................... 6-26 6.9 Emergency Communications with New York City Agencies ................................. 6-28 6.10 LIC Outage Liaison Activities............................................................................... 6-29 6.11 Communications With Elected Officials and the Media ....................................... 6-31 6.12 Environment, Health and Safety Communications with Environmental Regulatory Agencies............................................................................................. 6-35 APPENDIX A ........................................................................................................................... A-1 ii 1. INTRODUCTION Beginning July 17, 2006, primary feeder failures in Con Edison’s Long Island City (LIC) network caused damage to portions of the network’s secondary grid and interruptions of service to customers. Part 105 of the New York State Public Service Commission’s (PSC) rules requires that following an emergency event where the service restoration period exceeds three days, the company must submit to the PSC within 60 days of completion of service restoration a review of its preparation and system restoration performance. Con Edison is submitting this filing in compliance with the PSC rules. This filing reviews Con Edison’s advance preparation for this event, its actions to restore the LIC network and customers to service, and its communications during this event. Con Edison has undertaken a comprehensive study of the LIC outage event to review the causes of that event and to evaluate measures to strengthen the reliability of the company’s network system, including the LIC network, as well as mitigate the potential for equipment failures to affect service to network customers. In addition, that study is examining, among other things, how the company can improve its methods for identifying the interactions between the high voltage primary system and the low voltage secondary system and the effects of equipment failures on network customers, as well as how such improvements can, in turn, promote enhancements in the company’s emergency preparations, response, and communications. 1-1 On October 12, 2006, the company plans to issue a comprehensive report on its study of the LIC outage event, including proposals for addressing the causes of the event, enhancing network reliability, improving customer counting methods, reviewing secondary system monitoring, reviewing network shutdown process, and augmenting the company’s processes for emergency preparation, response and communication. 1 -2 2. OVERVIEW OF LONG ISLAND CITY OUTAGE During the week of July 16, 2006, New York City experienced an extreme heat wave with peak temperatures of 96 degrees Fahrenheit and a heat index of 102 degrees Fahrenheit. Indeed, official peak temperatures at La Guardia Airport for that period, tracked by the National Weather Service, reached 100 degrees Fahrenheit on Tuesday, July 18. Starting on Monday, July 17, the LIC network began to experience the loss of primary feeders. By Tuesday, July 18, additional primary feeders failed with 10 of the network’s 22 feeders out of service at the same time. The company worked to restore feeders expeditiously and reduce electric demand in order to stabilize the network. The series of primary feeders out of service, however, led to damage to Con Edison’s 120/208 volt secondary grid and, based on company estimates, resulted in outages to approximately 25,000 of the network’s 115,000 customers. Once the network supply was stabilized, a major effort ensued to repair or replace the damaged components and restore customers. This effort involved a force of over 2,000 responders, including Con Edison crews, crews from 14 other utilities and contractors. This major effort was supported by the full resources of the company and was completed on Tuesday, July 25. 2-1 3. ONGOING PREPARATION FOR HEAT WAVES 3.1 General Heat Wave Classification and Escalation Con Edison personnel monitor the electric system and anticipate weather conditions 24 hours a day, 365 days a year throughout the company’s service territory. The company carefully monitors the weather forecast for periods of hot weather since the resulting high demand for electricity during such periods increases the operating temperatures of distribution system components. Heat places stress on the distribution system and its components and, at high levels, can cause components to fail. The company identifies heat events in three categories. The first category is when the system peak demand is expected to be greater than 10,500 MW. When this occurs, the System Operation department declares an “Extreme Weather Criteria” heat event. In preparation for such anticipated