电瓷避雷器Issue(3)：77-84,8.DOI:10.16188/j.isa.1003-8337.2024.03.011
北京地区500 kV变电站66 kV侧PT间隔故障仿真及铁磁谐振过电压抑制方法研究
Simulation of 66 kV Side PT Interval Faults in 500 kV Substations in Beijing and Research on Methods for Suppressing Ferromagnetic Resonance Overvoltage
向常圆 1宋宝同 1李笑彤 1崔涵 2陈小月 2王思涵 1王晓冰1
作者信息
- 1. 北京电力经济技术研究院有限公司,北京 100031
- 2. 武汉大学电气与自动化学院,武汉 430072
- 折叠
摘要
Abstract
The generation and suppression of ferromagnetic resonance in 10～35 kV distribution systems have been widely studied,but there is relatively little research on the generation,development and sup-pression methods of ferromagnetic resonance overvoltage in 66 kV systems,and there is a lack of actual fault recording data in the field to support it.Therefore,we obtained the recorded wave data of resonant overvoltage fault of 66 kV side voltage transformer in a 500 kV substation in Beijing area,combined with the actual equipment data of the substation,established the simulation model of the substation based on ATP-EMTP electromagnetic transient simulation software,analyzed the causes and development of reso-nant overvoltage during charging of 66 kV busbar closing breaker,and compared the simulation results with the actual recorded wave to verify the validity of the simulation model.The simulation results are compared with the actual recordings to verify the validity of the simulation model,and the resonant over-voltage suppression method of 4 PT wiring is proposed by reducing the magnetic density of the voltage transformer at rated voltage,optimizing the excitation characteristics and shorting the delta winding in se-ries with a small resistance.关键词
电磁式电压互感器/故障分析/抑制措施/EMTPKey words
electromagnetic voltage transformers/fault analysis/suppression measures/EMTP引用本文复制引用
向常圆,宋宝同,李笑彤,崔涵,陈小月,王思涵,王晓冰..北京地区500 kV变电站66 kV侧PT间隔故障仿真及铁磁谐振过电压抑制方法研究[J].电瓷避雷器,2024,(3):77-84,8.
