南宁变电站电容器组跳闸及其处理  

Problem-solving for Capacitor Banks Tripping in Nanning Substation

作　　者：王宏斌[1] 周敏[1] 贺艳芝[1] 邓婧[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广州510663

出　　处：《南方能源建设》2016年第2期172-176,161,共6页Southern Energy Construction

摘　　要：500kV南宁变电站在启动过程中,手动投入3号变低压侧两台电容器组后,电容器组端电压越限跳闸。文章通过对本站500 kV电压控制曲线、主变绕组额定电压、电容器投入后容升效应及电压整定值等因素的分析,说明了在正常运行方式下,3号变低压侧仅可投入一组电容器。结合运行单位的需求,分析了减少单组电容器组容量的改造方案,及改造后电容器投入条件,并校验了改造后谐振和谐波情况。最后就以上问题对具体技术和设计管理提出了建议。During the start of Nanning substation,the capacitor banks at No. 3 main transformer’s low voltage side trippoff-normal, when putting into use manually. The paper analyzed the 500 kVvoltage control curve, rated voltage of lowvoltage winding, voltage rise capacitance,capacitive rise effect,voltage setting value, etc,proved that only one capacitor bank at No. 3 maintransformer’s low voltage side could be put into use in the normal conditions. With theanalyzed the modification scheme to reduce one set of capacitor bank’s capacitance and the condition putting into use, resonance and harmonic were also verified. Finally,the paper provided suggestions on teclinology agement aim to above problems.

关 键 词：并联电容器 保护整定 电压跳闸 

分 类 号：TM727[电气工程—电力系统及自动化]