Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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交流滤波器电容器不平衡保护动作逻辑分析

来源:电工电气发布时间:2020-06-18 13:18 浏览次数:773
交流滤波器电容器不平衡保护动作逻辑分析
 
何茂慧,邓凯,谷相宏,冯轩
(国网江苏省电力有限公司检修分公司,江苏 南京 210003)
 
    摘 要:交流滤波器是特高压换流站的重要设备之一。针对泰州换流站发生的一起交流滤波器电容器不平衡保护动作跳闸事件,分析了电容器不平衡保护的动作逻辑,根据电容器不平衡保护整定原则,结合实际电容器参数配置,推导计算了损坏不同个数元件下的电容器不平衡电流和过电压倍数,综合评估了实际电容器的过电压能力,并提出了相应的建议,对特高压换流站的安全稳定运行具有一定的参考价值。
    关键词:交流滤波器;电容器;不平衡保护;过电压
   中图分类号:TM531.5     文献标识码:A     文章编号:1007-3175(2020)06-0038-05
 
Analysis of Action Logic of AC Filter Capacitor Unbalanced Protection
 
HE Mao-hui, DENG Kai, GU Xiang-hong, FENG Xuan
(State Grid Jiangsu Electric Power Co., Ltd Maintenance Branch Company, Nanjing 210003, China)
 
    Abstract: AC filter is one of the important equipments in UHV converter station, in this paper, according to an AC filter capacitor unbalance protection action trip event in Taizhou converter station, the action logic of capacitor unbalance protection is analyzed in detail. Based on the setting principle of capacitor unbalanced protection and the actual configuration of capacitor parameters, the unbalanced current and over-voltage multiple of capacitor under different damaged elements are deduced and calculated, also the over-voltage capacity of actual capacitor is comprehensively evaluated, which has certain reference value for the safe and stable operation of UHV converter station.
    Key words: AC filter; capacitor; unbalance protection; over-voltage
 
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