Use of Gasket Eliminator to prevent flange corrosion and prevent gas leakage

Matthew Iles, Keith Williams

National Grid, United Kingdom

Multi-modal Machine Learning Prediction of Fleetwide Switchgear SF6 Escape from Historical Maintenance Records, Online Monitors and Domain Expertise

Ting LIU¹, Fiona IRWIN², Luis DE LA BARBA SUAREZ³, Allan Holton³, Dan JONES⁴, Rob TERRET-HENSMAN⁴, Gordon WILSON⁴, Annalisa RICCARDI¹, Blair BROWN¹, Stephen DJ MCARTHUR¹, Brian G STEWART¹, Bruce STEPHEN¹

1: University of Strathclyde, UK; 2: SSEN, UK; 3: ScottishPower, UK; 4: NGET, UK

Statistical Method for Gas Leak Detection for SF6 Circuit Breaker Based Only on Gas Temperature and Absolute Pressure

Ryszard Pater, Nathan Lefebvre, Doche René, Michel Gauvin, Antoine Mailhot, Éric Ouellet

Hydro-Québec, Canada

Implication of maintenance practices on the reliability on equipment such as CB and GIS

Ryota Kuriyama¹, Frank Richter², Matthew Iles³, Syuichi Tamura⁴, Wayne Pepper⁵, Robert Le Roux⁶, Sorawit Chiarapisitphong⁷, Hiroki Ito¹

1: Mitsubishi Electric Corporation, Japan; 2: 50Hertz Transmission GmbH, Germany; 3: National Grid, United Kingdom; 4: TEPCO Power Grid, Japan; 5: Ausgrid, Australia; 6: ESB, Ireland; 7: EGAT, Thailand

CIGRE Fourth Reliability Survey on GIS and CB

Hiroki Ito¹, Wayne Pepper², Frank Richter³, Robert le Roux⁴, Matthew Illes⁵, Anongpun Man-Im⁶, Mohammad Raza⁷, Giancarlo Guenzi⁸

1: Mitsubishi Electric, Japan; 2: Ausgrid, Australia; 3: 50 Hertz, Germany; 4: ESB, Ireland; 5: National Grid, United Kingdom; 6: EGAT, Thailand; 7: Hitachi Energy, Switzerland; 8: Consul, Italy

Implementation of Optical Technology for Fault Detection in High Voltage Mixed Lines

Iker García, Alejandro Relloso, Iñigo Extremiana

ELECTROTECNICA ARTECHE HNOS., S.L., Spain

Factors affecting reliability of Low Voltage Switchgears

Sukant Bhattacharya

DNV, United Arab Emirates

Beyond SF6 : update on regulations and SF6-free technologies and products to support the decarbonation of the energy

Yannick Kieffel, Bertrand Portal

GE Vernova, France

Development of a 550 kV 63 kA SF6-free high voltage metal-enclosed circuit breaker

Ennio Errico¹, Michael Lane¹, Matthew Cuppett¹, Hrishikesh Joshi¹, Fei Kong², Chen Yang², Yong Yang², Meng Lei Zheng², Valeria Teppati³

1: Hitachi Energy USA, Inc., United States of America; 2: Hitachi Energy (China) Ltd.; 3: Hitachi Energy (Switzerland) Ltd

Comparative Research on the Key Properties and Applications of the Novel Eco-friendly Insulating Gas CF3SO2F

Keli Gao¹, Wen Wang¹, Xianglian Yan¹, Baoshan Wang², Yu Zheng², Yin Huang¹

1: China Electric Power Research Institute, China, People's Republic of; 2: Wuhan University

Innovative approach exploiting the advantages of quantum technology in the search for an alternative to SF6 gas insulation in medium-voltage circuit breakers

Arianne Lemo¹, Mactar Thiam², Karl-Igor Pierre², Christian Cossette², Adam W. Skorek¹

1: Université du Québec à Trois-Rivières, Canada; 2: CO7 Technologies

Pioneering Eco-Friendly Insulation Solutions for HV Instrumentation Inductive Voltage Transformers (IVT)

Afsaneh Keshtkar, Paolo Diamanti, Mahendra Ramnarine, Joseph Arjune

Trench, Canada

Live Tank 420 kV high-voltage circuit-breaker CO2/O2 -50°C

David BERARD, Antonin BOBEAU, Joel OZIL, Solène LAURENT, Titouan PISSARDGIBOLLET

GE Vernova, France

Emission-free 420 kV life-tank circuit-breaker

Mark Kuschel¹, Minh. Nguyen², Guilhem Blanchet³, Lukas Binner¹, Maurice Lesser¹, Radu-Marian Cernat¹

1: Siemens Energy, Germany; 2: RTE, France; 3: Statnett; Norway

SF6-free high-voltage live-tank circuit-breaker for extremely cold regions

Ludovic DARLES, Cyril GREGOIRE, Clemence DUMOULIN, Cynthia Kessaci

GE Vernova, France

Development of SF6-Free 420 kV Gas Insulated bus using CO2/O2 Natural-Origin Gas Mixture as an Alternative to SF6

Takuya Susuki, Toru Koike, Sebin Attokaren

Toshiba Energy systems & Solutions Corporation, Japan

Suppression of gas pressure or tank diameter increase of GIS using natural-origin gas by combining FGM spacer and insulation coating technology

Kenji Okamoto¹, Hidetaka Masui¹, Naoki OSAWA², Katsumi KATO³

1: Fuji Electric Co., Ltd., Japan; 2: Kanazawa Institute of Technology; 3: N. I. T., Niihama College

Decarbonizing District Heating: Canada’s First Clean Air Installation and Advances in SF6-Free Switching Technology

Eduardo Gomez Hennig¹, Mark Kuschel², Peter Gronbach², Deryl A Varkey¹, Ben Ellison³

1: Siemens Energy, Canada; 2: Siemens Energy, Germany; 3: Creative Energy, Canada

Maintenance Strategies for Disconnectors According to Substation Corrosiveness

Catherine Le Postec¹, Hélène Gauthier²

1: Hydro-Québec, Canada; 2: IREQ, Canada

Dielectric performance of HVDC disconnectors: Updates on RIV and pollution testing also combined with icing conditions

EROS STELLA, MARCO NOSILATI, RODOLFO SARACENI, DAVIDE MOMESSO

GE Vernova, Italy

Wind-induced vibration characteristics test and control technologies of ±800kV converter station disconnectors in strong wind areas

Peng Li, kunpeng Ji, Junhui Li, Kuanjun Zhu

State Grid Electric Power Engineering Research Institute Co., LTD., China, People's Republic of

Electric field simulation calculation andlong term charging performance of 550kV DC GIS/GIL

Congpeng Huang, Yajun Qiang, Dingyu Feng

SIEYUAN ELECTRIC CO.,LTD, China, People's Republic of

Asset Transparency and Scenario Planning for Resilient Grids

Erhard Aumann, Puneet Singh, Edwin Mora, Thomas Schmidt, Mathias Duckheim

Siemens, Germany

Environmental, economic and program advantages of equipment refurbishment

Matthew Iles, Bradley Brown, Mark Waldron

National Grid, United Kingdom

Risk evaluation framework for power grid resilience to extreme weather events

Jishnudeep Kar¹, Lena Peter², Ashwin Shirsat¹, Elise Fahy³

1: Hitachi Energy Research, United States of America; 2: Hitachi Energy Research, Germany; 3: Hitachi Energy, Switzerland

Trends in Distribution Networks and influence on MV Equipment

Christian Heinrich¹, Terrance Woodyard², Stephen Manke²

1: Siemens AG, Germany; 2: Siemens Industry, USA

Grid Integration of DER - Energizing Medium-Voltage Power Transformers in Wind Turbine Generators - Grid Code Compliance : Industrialized Applications and Operation of Low-Power Instrument Transformers, Three-Pole Operated Vacuum Circuit Breakers and Controlled Switching Devices to Mitigate Transformer Inrush Currents and Voltage Dips. Case Study and Potential for Wind Turbine Repowering

Lukas Cesky¹, Laurent Poutrain², Michail Theodoridis³, Venkata Surya⁴, Vaclav Prokop¹

1: ABB, Brno, Czech Republic; 2: Vizimax Inc., Canada; 3: Vestas, United Kingdom; 4: Vestas, India

Demonstration application results of the 10 kV magneto-biased superconducting current limiter (MBSFCL) in Liaoning urban power grid in China

Jiahui Zhu, Xiaotian Su, Panpan Chen

China Electric Power Research Institute, China, People's Republic of

Methodology for Oscillograms Analysis and Condition Indicators Assessment by Automated Algorithms for Circuit-Breaker Diagnostics

Nathan Lefebvre^1,2, Antoine Mailhot¹, Ryszard Pater¹, Michel Gauvin¹, René Doche¹, João Pedro Trovão²

1: Hydro-Québec, Canada; 2: Université de Sherbrooke, Canada

Seven years Operational Experience of Fixed Series Compensator (FSC) at GIS Kala Amb - Learnings and Challenges

Abhay Kumar, Shafat Ahmad Wani, Jagat Ram, Abhishek Bhardwaj

Powergrid Corporation of India Limited, India

CIGRE Survey on UHV equipment

Hiroki Ito¹, Masayuki Kosakada²

1: Mitsubishi Electric, Japan; 2: Toshiba Energy Systems & Solutions, Japan

Future UHV substation technology in Japan

Norihiro Kasahara¹, Masayuki Kosakada¹, Takayuki Kobayashi¹, Toshiyuki Saida¹, Shigeyuki Tsukao², Tomoaki Ito², Syuichi Tamura², Yuki Ishikawa²

1: Toshiba energy systems & solutions Co. JAPAN; 2: TEPCO Power Grid, Inc. JAPAN

Long-term measurements of switching transients with VCBs – intelligent data analysis and algorithms

Roberto Schulze¹, Erik Sperling²

1: OMICRON electronics, Germany; 2: OMICRON electronics, Switzerland

Integration of Digital Technologies in Medium Voltage Switchgears

Sneha Patel¹, Sergio Sevileanu², Mohammed Kabir¹, Mohammad Ali Khan¹, Mikhail Rabinovich³

1: Siemens, Canada; 2: Siemens AG; 3: Siemens, USA

Capacitive Current Switching Test on Vacuum Circuit Breaker and Evaluation of Voltage Factor on the Future Italian 36 kV Network

Francesco Palone, Luca Buono, Gabriele Tresso, Mattia Boiani

Terna Rete Italia, Italy

420 kV 30 MVAr reactive inductive compensation solutions and type tests in extreme low temperature -50C.

Guilhem Blanchet¹, Sveinung Pettersen², Anders Lægreid¹

1: Statnett SF, Norway; 2: Equinor

Development of an Anomaly Detection System for Gas Circuit Breaker

Koma Sato, Tomonori Chikano, Yu Takahara, Katsuhiko Fujioka, Shota Tanaka, Kazuhiro Oda, Daisaku Yamada, Masashi Kitayama

Mitsubishi Electric Corporation, Japan

A broad return of experience for Power Transformer Energization with Controlled Switching technique, based on more than forty cases.

Alain FANGET

GE Vernova, France

Low-Power Instrument Transformers for Control, Protection and Metering Applications

Valeri Oganezov¹, Lukas Cesky², Vaclav Prokop²

1: ABB Inc,, Canada; 2: ABB s.r.o., Czech Republic

Optical Current Transformers: Bridging Measurement Accuracy and Predictive Maintenance

Carlos Dutra¹, Luan Tominaga¹, Jurandir Oliveira¹, Vitor Woyakewicz², Sergio Zimath², Tiago Matsuo², Luciano Freitas³, Rubens Nascimento³

1: PowerOpticks, Brazil; 2: AQTech, Brazil; 3: ENGIE, Brazil

New test and commissioning tools and concepts for low power instrument transformer

Peter Menke², Franz Gatzen³, Patrick Ganser², Federico Canas³, Max Burow², Jörg Blumschein³, Antoni Furlani Rosa¹, Lucas Varela¹, Thomas Neumeier³, Andre Rios¹

1: SecuControl Inc, United States of America; 2: Siemens Energy Germany; 3: Siemens AG Germany

Test voltage investigations on wide-bandwidth accuracy behaviour of medium voltage LPVTs using sweep frequency response analysis

Thomas Bischof¹, Lukas Cesky², Erik Sperling³, Danish Baig⁴, Bretislav Sevcik²

1: OMICRON electronics GmbH, Austria; 2: ABB s.r.o, Czech Republic; 3: OMICRON, Switzerland; 4: ABB, Canada

Recommendations for the Low – Power Passive Instrument Transformers testing

Lukas Cesky¹, Ryan Elo², Mirza Danish Baig³, Karol Majer², Martin Celko², Vaclav Prokop², Victor Villanueva⁴

1: ABB, Brno, Czech Republic; 2: OMICRON electronics Corp., USA; 3: ABB Inc., Canada; 4: ABB Inc., USA

Development and Testing of a 110 kV 10000 pF Dry Type Capacitive Voltage Transformer (CVT)

Robert Leonard Middleton, Eric Euvrard, Haizhen Wang

RHM International

Frequency-Dependent Validation of an Electromagnetic Control-Oriented Current Transformer Model

Nicolai Schwartze^1,2, Dennis Albert¹, Sonja Moschik¹, Markus Reichhartinger²

1: OMICRON electronics GmbH, Austria; 2: Graz University of Technology, Austria

Development of an optimised Fibre Optics Sensor for Laboratory and Substation non-invasive Calibration of Current Transformers

Gabriella CROTTI¹, Palma Sara LETIZIA¹, Alf-Peter ELG², Guglielmo FRIGO³, Jari HÄLLSTRÖM⁴, Paolo MAZZA⁵, Burak AYHAN⁶, Hüseyin ÇAYCI⁶, Mikael LINDGREN²

1: INRIM Istituto Nazionale di Ricerca Metrologica; 2: RISE Research Institutes of Sweden AB; 3: METAS Federal Institute of Metrology; 4: VTT Technical Research Centre of Finland Ltd; 5: RSE Ricerca Sistema Energetico; 6: TUBITAK The Scientific and Technological Research Council of Türkiye