Towers and Poles Report Ed 7 2019 Chapter Summaries EXECUTIVE
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“Hybrid Lattice-Tubular Steel Wind Towers: Conceptual Design of Tower”
“Hybrid Lattice-Tubular steel wind towers: Conceptual design of tower” Dissertação apresentada para a obtenção do grau de Mestre em Engenharia Civil na Especialidade de Mecânica Estrutural Autor João Rafael Branquinho Maximino Orientador Carlos Alberto da Silva Rebelo Milan Veljkovic Esta dissertação é da exclusiva responsabilidade do seu autor, não tendo sofrido correcções após a defesa em provas públicas. O Departamento de Engenharia Civil da FCTUC declina qualquer responsabilidade pelo uso da informação apresentada Coimbra, Julho, 2015 Hybrid Lattice-Tubular steel wind towers AGRADECIMENTOS Agradeço em primeiro lugar aos meus pais, por todo o apoio demonstrado ao longo dos anos, e pelos ensinamentos fundamentais que me levaram a este momento. Ao meu irmão, que sempre esteve ao meu lado, obrigado pela motivação em todos os momentos. A toda a minha família pela união, apoio, coragem e vontade que sempre me transmitiram. À minha namorada, que desde o início tornou esta experiência melhor para mim, e me ajudou a crescer como pessoa. Aos meus colegas que me acompanharam e apoiaram neste percurso, a todos os professores que me transmitiram tudo o que aprendi até agora, o meu muito obrigado. Por fim gostaria de agradecer à Universidade Técnica de Lulea por me ter acolhido na realização desta tese de mestrado, e mostrar a minha gratidão ao Professor Doutor Carlos Alberto da Silva Rebelo e ao Professor Doutor Milan Veljkovic pela orientação e disponibilidade dispensada. i Hybrid Lattice-Tubular steel wind towers ABSTRACT The utilization of the wind is not a new technology, but an evolution of old processes and techniques. Like nowadays, wind power had a huge role in the past, with different utilizations and proposes, although the main goal was always to help in the Human’s heavy work. -
TF6 Brochure Large Overhead Line Crossings Feb2009
396 LARGE OVERHEAD LINE CROSSINGS Working Group B2.08 October 2009 LARGE OVERHEAD LINE CROSSINGS Working Group B2.08 TASK FORCE MEMBERS J.Rogier (BE), K.Van Dam (BE), J.B.G.F. da Silva Convener, (BR), R.C.R. Menezes (BR), A. Fuchs (DE), G. Nesgärd (NO), G. Gheorghita (RO), C. Garcia A. (VE), D. Hughes (GB), L. Kempner (US) Convenor: J.B.G.F. da Silva (Brazil), Secretary: D. Hughes (GB) Regular members: L. Binette (Canada), J. Fernadez (Spain), A. Fuchs (Germany), R. Jansson (Sweden), L. Kempner (United States), D.I. Lee (Korea), N. Masaoka (Japan), G. Nesgard (Norway), V. Numminen (Finland), L. Pellet (France), J. Peralta (Portugal), R.C. Ramos de Menezes (Brazil), J. Rogier (Belgium), J.D. Serrano (R. South Africa), E. Thorsteins (Iceland), S. Villa (Italy), Corresponding members: C.G. Alamo (Venezuela), G. Brown (Australia), G. Gheorghita (Romania), R. Guimarães (Brazil), H Hawes (Australia), C. Laub (Czech Republic), F. Legeron (Canada), T. Leskinen (Finland), M. Ishac (Canada), J.M. Menéndez (Cuba), F. Meza Rosso (Bolivia), K. Nieminen (Finland), R. Peixoto (Brazil), J. Prieto (Spain), C. Thorn (UK), J. Toth (Canada), K. Van Dam (Belgium), M. Vanner (UK) ISBN: 978- 2- 85873- 083-4 Copyright © 2009 “Ownership of a CIGRE publication, whether in paper form or on electronic support only infers right of use for personal purposes. Are prohibited, except if explicitly agreed by CIGRE, total or partial reproduction of the publication for use other than personal and transfer to a third party; hence circulation on any intranet or other company network is forbidden”. Disclaimer notice “CIGRE gives no warranty or assurance about the contents of this publication, nor does it accept any responsibility, as to the accuracy or exhaustiveness of the information. -
Probabilistic Capacity Assessment of Lattice Transmission Towers Under Strong Wind
ORIGINAL RESEARCH published: 19 October 2015 doi: 10.3389/fbuil.2015.00020 Probabilistic capacity assessment of lattice transmission towers under strong wind Wei Zhang1* , Jin Zhu1 , Huijuan Liu2 and Huawei Niu3 1 Department of Civil and Environmental Engineering, University of Connecticut, Storrs, CT, USA, 2 Guangxi University, Nanning, China, 3 Wind Engineering Research Center, Hunan University, Changsha, China Serving as one key component of the most important lifeline infrastructure system, transmission towers are vulnerable to multiple nature hazards including strong wind and could pose severe threats to the power system security with possible blackouts under extreme weather conditions, such as hurricanes, derechoes, or winter storms. For the security and resiliency of the power system, it is important to ensure the structural safety with enough capacity for all possible failure modes, such as structural stability. The study is to develop a probabilistic capacity assessment approach for transmission towers under strong wind loads. Due to the complicated structural details of lattice transmission towers, wind tunnel experiments are carried out to understand the complex interactions of wind and the lattice sections of transmission tower and drag coefficients and the dynamic amplification factor for different panels of the transmission tower are Edited by: Acir Mércio Loredo-Souza, obtained. The wind profile is generated and the wind time histories are simulated as a Universidade Federal do Rio Grande summation of time-varying mean and fluctuating components. The capacity curve for do Sul, Brazil the transmission towers is obtained from the incremental dynamic analysis (IDA) method. Reviewed by: Franklin Lombardo, To consider the stochastic nature of wind field, probabilistic capacity curves are gener- Rensselaer Polytechnic Institute, USA ated by implementing IDA analysis for different wind yaw angles and different randomly Ioannis Zisis, generated wind speed time histories. -
State of the Art of Conductor Galloping
STATE OF THE ART OF CONDUCTOR GALLOPING A complementary document to “Transmission line reference book –Wind-induced conductor motion Chapter 4: Conductor galloping,” Based on EPRI Research project 792 Task Force B2.11.06 Members: Lilien, Jean-Louis - Belgium (Convenor) Van Dyke, Pierre - Canada (Secretary) Asselin, Jean-Marie - Canada Farzaneh, Masoud - Canada Halsan, Kjell - Norway Havard, Dave - Canada Hearnshaw, Dave - England Laneville, André - Canada Mito, Masataka - Japan Rawlins, Charles B. - USA St-Louis, Michel - Canada Sunkle, Dave - USA Vinogradov, Alexandre - Russia International expert who contributed: Yamaguchi, Hiroki - Japan The authors of this brochure have asked detailed comments to: Tunstall, M.J. (former chairman of B2.11.06) - UK Ervik, M. - Norway Obrö, H. - Denmark Okumura, T. - Japan Shkaptsov, V. - Russia FOREWORD TO THE GALLOPING BROCHURE Of all the wind induced motions of Overhead Transmission Line conductors or other suspended cables, galloping is the most noticeable and spectacular and the resulting damage can be equally dramatic and very costly, with broken conductors and fittings, damaged tower components and even whole towers collapsing! The consequential economic and social costs of power loss to whole areas can also be very considerable. Galloping is an oscillation of single or bundled conductors due to wind action on an ice or wet snow accretion on the conductors, although there are recorded instances of non-ice galloping arising from the conductor profile presented to the wind. Conductor motions are characterised by amplitudes that may approach or exceed the conductor sag (possibly >10m) and depending on the amplitudes and number of loops, frequencies up to 3 Hz. Galloping of conductors received particular emphasis by incorporation of a CORECH work group within Task Force 6 (Galloping) of CIGRE SCB2 WG11. -
Design, Supply and Installation of 132Kv & 230Kv Transmission Lines
POWER GRID COMPANY OF BANGLADESH LIMITED Design, Supply and Installation of 132kV & 230kV Transmission Lines Enhancement of Capacity of Grid Substations and Transmission Lines for Rural Electrification under the Rural Electricity Transmission & Distribution Project of the World Bank VOLUME 2 OF 2 SCOPE OF WORK TECHNICAL SPECIFICATIONS DRAWINGS FORMING PART OF SPECIFICATION January, 2016 POWER GRID COMPANY OF BANGLADESH LIMITED Design, Supply and Installation of 132kV & 230kV Transmission Lines INDEX TO VOLUME 2 OF 2 Section Description Section 1 Scope of Work Section 2 Site Particulars Section 3 Quality Assurance Section 4 Design Particulars Section 5 Access Section 6 Survey and Geotechnical Investigations Section 7 Foundation Section 8 Tower Section 9 Insulator Section 10 Insulator and Conductor Fittings Section 11 Conductor Section 12 Vibration Damper Section 13 Spacer Damper Section 14 Optical Fiber Cable & Fittings Section 15 Aircraft Navigation (Obstruction Aids) Section 16 Miscellaneous Section 17 Packing, Protection and Dispatch Marking Section 18 Method of Measurement & Payment Section 19 Bid Drawings Section 20 Environmental and Social Assessment POWER GRID COMPANY OF BANGLADESH LIMITED Design, Supply and Installation of 132kV & 230kV Transmission Lines INDEX TO VOLUMES Volume 1 of 2 Section 1 - Instruction to Bidders Section 2 - Bid Data Sheet Section 3 - Evaluation and Qualification Criteria Section 4 - Bid Forms Section 5 - Eligible Countries Section 6 - Employer’s Requirements Section 7 - General Conditions of Contract Section -
Wind Turbine Towers Using Concrete and Steel
PROJEKT: A NEW INNOVATIVE METHOD TO CONSTRUCT WIND TURBINE TOWERS USING CONCRETE AND STEEL Professor adviser: Prof. Dr.-Ing. Jens Minnert Student: Devesa Such, Eva Mtrkn: 5008023 Index Introduction o Renewable energy o Wind energy o Wind turbine History o Nowadays in Europe o Wind energy in relation to the building Turbine types o Vertical axis . Darrieus . Savonius . Panémonas o Horizontal axis . Multi-blade rotors. Slow wind turbine. Propeller type rotors. Fast wind turbine. With respect to the wind o A windward o A leeward By the number of blades o One blade o Two blades o Three blades Page 2 The tower o Typology . Concrete tower . Lattice tower . Steel tubular tower . Braced steel tubular tower Advantages and disadvantages New wind turbines towers using concrete and steel o Building process . Foundation . Assembly of the hybrid tower . Building process o Calculations . Square tower . Triangular tower o Prices . Square tower . Triangular tower . Total prices Conclusion Acknowledgements Bibliography Page 3 Introduction As Project Thesis of student from the "Escuela Técnica Superior de Ingeniería de Edificación" from Valencia and under the tutelage of Professor Jens Minnert, this thesis was carried out in the Technische Hochschule Mittlehessen of Giessen (Germany). I will treat a new innovative method to construct wind turbine towers using concrete and steel. Page 4 Renewable energy The use of energy, the generation and transmission are one of the activities that produce more negative impact on the environment. However, compared to conventional sources, renewable energy, clean and inexhaustible resources provided by nature, have zero impact and it is always reversible. These renewable energies help reducing our country’s dependence on external supplies and it helps to promote technological development and job creation. -
Towers and Poles Report Ed 6 2018 Electricity, Telephone and Street Lights
Towers and Poles Report Ed 6 2018 Electricity, Telephone and Street Lights Report Outline Chapter Summaries Table of Contents Sample Tables Sample Pages Edition 6 March 2018 StatPlan Energy Research Towers and Poles Report Ed 6 2018 Chapter Summaries EXECUTIVE SUMMARY PART 1 ELECTRICITY TRANSMISSION TOWERS AND MONOPOLES Chapter 1 - INSTALLED BASE OF ELECTRICITY TRANSMISSON TOWERS & MONOPOLES The global installed base of transmission towers and monopoles is analysed in numbers of towers by region and country and forecast from 2016 to 2020. Chapter 2 - ELECTRICITY TRANSMISSION TOWERS MARKET The global demand in $ value for towers and monopoles is analysed by region and country and forecast from 2016 to 2020. Chapter 3 - LONG TERM DEMAND CYCLES FOR ELECTRICITY TOWERS AND MONOPOLES The growth of transmission line networks is a fundamental driver of the markets for towers and poles, both in line length and voltage. Long term demand is a function of the age of the towers and the expansion of the networks. Chapter 4 - MONOPOLES vs. LATTICE TOWERS The March of the Monopoles - long established in the US, EHV monopoles are breaking into new markets with innovative new designs, replacing lattice towers, especially in Europe. This trend is driven by pressure on rights-of-way, visual criticism of lattice towers and public fears of EMF dangers to children. Chapter 5 - TYPES OF TOWER OR PYLONS Lattice towers are designed for different functions and stresses and there is wide variation in cost; suspension towers, tension towers, angle suspension towers, dead-end towers, transposition towers. Tower installation is a dangerous and complex procedure and has an impact on costs. -
Vla Hand Dellvery
VICTOR V. MANOUCIAN Dlrect Dl¡l; 603.ô28.13 l0 Er¡¡il: victor, monougian@nrclane,con 900 Elm Stre¡t, P,ô. Box 326 CLANE Mnnchertø, NH 03 I 05 4326 T 603,625,6464 MID F 603,625,5650 March 14,2017 Vla Hand Dellvery Tavis Austínn Town Planner Town of Stratham 10 Bunker Hill Avenue Stratham, NH 03885 Re: Appllcatlonc for Speclal Exceptlon, Condltlon¡l Ure Permlt, and Slte Pl¡n Revlew for Proposed Monopole at 58 Portsmouth Avenue by Cellco Partncrshlp d/b/¡ Verlzon lVlreless Dear Mr. Austinr Please find enclosod the following Special Exception Application, Conditional Use Permit Application, and Site Plan Review Application materials for your review, The applicant, Verizon 'vVireless ("Verizon" or the "Applicant"), seeks public hearings by the ZoningBoard and Planning Boæd on its applications in connectíon with the installation of a wireless monopole located at 58 Portsmouth Avenue in Stratham, New Hampshire (the "Facility"), in the Gateway Commercial Business District - Central Zone. I. APPLICATIoN MATERIAIS Pursuant to the StrathamZoningOrdinanco ("Ordinance"), Verizon has enclosed nine (9) copies of the following materials and documents (unless otherwise specified below): Special Exception, Conditional Use Permit, Site Plan Review Applioations and Site Plan Review Checklist; Three (3) Sets of Abutter Labels (included with original copy only); J. Memorandum of Lease with Property Owner; 4. RF Coverage Study; 5. RF Candidate Selection Map; 6. Evidence of FCC Licensure; Site Plans, six (6) 24"x36" and nine (9) 1 1"xI7"; L Proposed notification letter and mailing labels for towns within 2O-mile radius of proposed Facility, in compliance with NH RSA 12-K (labels with original oopy only); Mclane Middleton, Professional Association Manchester, Concord, Portsmouth, NH I Woburn, tsoston, MA Mcl,ane,com Tavis Austin, Town Planner March 14,2017 Page2 9. -
Wind Tunnel Study on Bidirectional Vibration Control of Lattice Towers with Omnidirectional Cantilever-Type Eddy Current TMD
applied sciences Article Wind Tunnel Study on Bidirectional Vibration Control of Lattice Towers with Omnidirectional Cantilever-Type Eddy Current TMD Wenjuan Lou, Zuopeng Wen , Yong Chen * and Mingfeng Huang College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China * Correspondence: [email protected] Received: 13 June 2019; Accepted: 21 July 2019; Published: 25 July 2019 Abstract: An omnidirectional cantilever-type eddy current tuned mass damper (ECTMD) for lattice towers is introduced to suppress bidirectional vibration of lattice towers, in a form of a cantilever beam with a tip magnet mass. The damping of the ECTMD can be easily changed by tuning the amount of the current. A typhoon-fashion wind environment is simulated for the wind tunnel test. Test results show that there exists an optimal damping of the ECTMD along with an optimal frequency ratio. The scaled aeroelastic model is tested under various wind conditions, and a good effectiveness of ECTMD is observed. The wind directions, perpendicular and parallel to the cross-arm, are the most critical for the design of ECTMD, as the vibration mitigation in either of these two cases is relatively weaker. Finally, a simplified model is established for theoretical analysis in the frequency domain, whereby the variance responses of the tower with and without ECTMD are computed. The numerical results agree well with the experimental results, which corroborates the feasibility of using the proposed omnidirectional cantilever-type ECTMD in suppressing the vibrations of the tower in both along-wind and across-wind directions. Keywords: omnidirectional cantilever-type ECTMD; lattice tower; wind tunnel test; frequency domain analysis; bidirectional vibration control 1. -
Load Control Devices on Overhead Transmission Lines
174 LOAD CONTROL DEVICES ON OVERHEAD TRANSMISSION LINES Working Group 22.06 December 2000 LOAD CONTROL DEVICES ON OVERHEAD TRANSMISSION LINES PREPARED BY WORKING GROUP 22.06 Members of the Working Group : Elias GHANNOUM - Convenor (Canada) Joel ANGELINI (France), Jim FERGUSON (United Kingdom), Svein FIKKE (Norway), Edwin GOODWIN (United States), Ramon GRANADINO (Spain), Trevor JACOBS (New Zealand), Friedrich KIESSLING (Germany), Joao Felix NOLASCO (Brazil), Jan ROGIER - New Convenor (Belgium), Pavel FRONEK (Czech Republic). Corresponding Members : D. CHOUDHRY (India), Farid KHADRI (Algeria), Jeong Boo KIM (Korea), Tony PLOG (Netherlands), W. Neil PIERCE (Australia), Helmut STRUB (Switzerland). LOAD CONTROL DEVICES ON OVERHEAD TRANSMISSION LINES Working Group 22.06 TABLE OF CONTENTS 1. SUMMARY 3 2. INTRODUCTION 4 3. CLASSIFICATION OF LCD 5 3.1. Load Release Devices 5 3.2. Load Reduction Devices 5 4. TECHNICAL DATA RELATED TO AVAILABLE LCD 5 4.1. Special Elongated Fittings : Japanese Experience 6 4.1.1. Type I 6 4.1.1.1. Principle 6 4.1.1.2. Design Characteristics 8 4.1.1.3. Mechanical Performance 8 4.1.1.4. Electrical Performance 8 4.1.1.5. Service Experience 8 4.1.2. Type II 9 4.2. Controlled Sliding Clamps 10 4.2.1. French Experience 10 4.2.1.1. Principle of the Controlled Sliding Clamps 10 4.2.1.2. Calibration 11 4.2.1.3. Design of a Controlled Sliding Clamp 12 4.2.1.4. Test 13 4.2.1.5. Device Efficiency 16 4.2.2. Belgian Experience 18 4.2.3. Romanian Experience 18 5. -
All Notices Gazette
ALL NOTICES GAZETTE CONTAINING ALL NOTICES PUBLISHED ONLINE BETWEEN 8 AND 10 MAY 2015 PRINTED ON 11 MAY 2015 PUBLISHED BY AUTHORITY | ESTABLISHED 1665 WWW.THEGAZETTE.CO.UK Contents State/2* Royal family/ Parliament & Assemblies/2* Church/ Companies/4* People/73* Money/ Environment & infrastructure/105* Health & medicine/ Other Notices/123* Terms & Conditions/130* * Containing all notices published online between 8 and 10 May 2015 STATE STATE PARLIAMENT & ASSEMBLIES Departments of State CROWN OFFICE LEGISLATION & TREATIES 2330410The Queen has been pleased by Royal Warrant under Her Royal Sign 2330412NATIONAL ASSEMBLY FOR WALES Manual dated 6 May 2015 to appoint Neil Flewitt, Esquire, Q.C., to be The following Letters Patent were signed by Her Majesty The Queen a Circuit Judge, commencing on and from the 9 June 2015, in on the twenty-ninth day of April 2015 in respect of the Well-being of accordance with the Courts Act 1971. Future Generations (Wales) Bill anaw 2. G. A. Bavister (2330410) ELIZABETH THE SECOND by the Grace of God of the United Kingdom of Great Britain and Northern Ireland and of Our other Realms and Territories Queen Head of the Commonwealth Defender 2330406The Queen has been pleased by Royal Warrant under Her Royal Sign of the Faith To Our Trusty and well beloved the members of the Manual dated 6 May 2015 to appoint District Judge Richard Saul National Assembly for Wales Harper to be a Circuit Judge, commencing on and from the 20 May GREETING: 2015, in accordance with the Courts Act 1971. FORASMUCH as one or more Bills have been passed by the National G. -
Damage Detection Strategies in Structural Health Monitoring of Overhead Power Transmission System Lukasz Skarbek, Arkadiusz Zak, Dominik Ambroziak
Damage Detection Strategies in Structural Health Monitoring of Overhead Power Transmission System Lukasz Skarbek, Arkadiusz Zak, Dominik Ambroziak To cite this version: Lukasz Skarbek, Arkadiusz Zak, Dominik Ambroziak. Damage Detection Strategies in Structural Health Monitoring of Overhead Power Transmission System. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. hal-01020412 HAL Id: hal-01020412 https://hal.inria.fr/hal-01020412 Submitted on 8 Jul 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 7th European Workshop on Structural Health Monitoring July 8-11, 2014. La Cité, Nantes, France DAMAGE DETECTION STRATEGIES IN STRUCTURAL HEALTH MONITORING OF OVERHEAD POWER TRANSMISSION SYSTEM Lukasz Skarbek1, Arkadiusz Zak1, Dominik Ambroziak1 1 Gdansk University of Technology, Faculty of Electrical and Control Engineering, ul. Wlasna Strzecha 18A, 80-234 Gdansk, Poland [email protected] ABSTRACT Overhead power transmission lines, their supporting towers, insulators and other elements create a highly distributed system that is vulnerable to damage. Typical damage scenarios cover cracking of foundation, breakage of insulators, loosening of rivets, as well as crack- ing and breakage of lines. Such scenarios may result from various factors: groundings, lightning strikes, floods, earthquakes, aeolian vibrations, conductors galloping, icing, and also include sabotage or terrorist attacks.