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国网华东分部,上海 200120
西安交通大学电气工程学院,西安 710049
Received:05 October 2024,
Revised:2024-12-13,
Published:16 December 2025
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LI Ke, JIAO Wengeng, LU Bo, et al. Study on the Influence of Series Reactor Access on Transient Recovery Voltage of Extra High Voltage Circuit Breaker[J]. High Voltage Apparatus, 2025, 61(12): 90-96.
LI Ke, JIAO Wengeng, LU Bo, et al. Study on the Influence of Series Reactor Access on Transient Recovery Voltage of Extra High Voltage Circuit Breaker[J]. High Voltage Apparatus, 2025, 61(12): 90-96. DOI: 10.13296/j.1001-1609.hva.2025.12.012.
在线路上加装串联电抗器是抑制短路电流的有效措施,但同时也对断路器瞬态恢复过电压(TRV)产生显著影响,会影响断路器的正常开断,进而影响系统的安全稳定运行。文中结合中国现有500 kV超高压线路串联电抗器工程,利用电磁暂态仿真软件EMTP-RV研究了不同工况下串联电抗器接入对断路器TRV的影响。研究结果表明:接入的串联电抗器参数、位置对TRV有重要影响,串入的电感量越大,TRV电压上升率越低;安装位置越靠近断路器,TRV上升率越大;线路长度对TRV上升率影响较小,引起的变化幅度在5%以内;在串联电抗器两端并联电容器可有效降低TRV上升率;断路器TRV最大电压峰值随安装位置、线路长度和串入电感量的变化呈非单调变化;并联电容对断路器TRV最大电压峰值影响较小,加装前后波动范围在3%以内。
Installation of series reactors on transmission lines is an effective measure to suppress short circuit current and
however
has also a significant influece on the transient recovery overvoltage(TRV)of circuit breaker at the same time,affecting the normal interruption of circuit breaker and safe as well as stable operation of the system further. In this paper the influence of series reactor access on TRV of circuti breaker under different working conditions is studied in combination with the existing series reactor project of 500 kV UHV line in China and also by the use of electromagnetic transient simulation softwareEMTP-RV. The study results show that the parameters and positions of series reactors have important influence on TRV. The higher the series inductance
the lower the rate of rise of TRV. The closer of the installation location to the circuit breaker
the higher the rate of rise of TRV. The length of the line has little influence on the rate of rise of TRV,and the variation amplitude is less than 5%. Capacitors in parallel connection on both sides of the series reactor can effectively reduce the rate of rise of TRV. The TRV peak value of circuit breaker varies non-monotonically with the variation of installation position
length of line and series inductance. Shunt capacitors have little influence on the TRV peak of circuit breaker,and the fluctuation range before and after installation is within 3%.
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