南方电网技术2016，Vol.10Issue(9)：24-29,6.DOI:10.13648/j.cnki.issn1674-0629.2016.09.004
550 kV双断口交流滤波器断路器暂态恢复电压仿真
Simulation of Transient Recovery Voltage of 550 kV AC Filter Breaker with Double Breaks
摘要
Abstract
AC filters (ACFs)for different harmonics are installed in HVDC stations,they switch on and off very often with circuit breakers for reactive power compensation. ACF breakers bear transient recovery voltages (TRV)comprising AC and DC voltages after switching off large capacitive current,because the DC voltage component is decided and divided by resistance which is influenced by the ambient environment of porcelain breaker external insulation,the TRV may exceed the insulation requirement. Using a typical 550 kV AC filter procelain breaker with two breaks used in HVDC stations as an example,a simulation model of TRV is established based on PSCAD to simulate the influencing factors of TRV. The simulation results show that the ambient environment,such as humidity, dirt and dry zone,can seriously affect the TRV of breaks. With specific ambient environment conditions,when the break resistance decreases and the diffence between the two break resistances is large,the maximum break TRV may approach or even exceed the theshhold value,which will result in breaker restrike or flashover.关键词
交流滤波器/断路器/暂态恢复电压/外界环境/重燃Key words
AC filter/breaker/transient recovery voltage/ambient environment/restrike分类
信息技术与安全科学引用本文复制引用
施健,罗兵,傅明利,厉天威,曾向君,贾磊,张福增..550 kV双断口交流滤波器断路器暂态恢复电压仿真[J].南方电网技术,2016,10(9):24-29,6.基金项目
南方电网公司2015年重大科技项目（CSGTRC－K153047）。@@@@Supported by Major Technology Projects of China Southern Power Grid 2015 （）
