Analysis on unbalance protection of SCB
Shunt capacitor is a main measure to reactive power compensation of power system,which has the advantages of flexibility and economy.In order to guarantee the safety of shunt capacitor,the methods for protecting against over-voltage,under-voltage,over-current and unbalance in circuits according to the different operation modes are used.This paper in detail introduces unbalance protection ways under different connection modes of capacitor group.It is analyzed and calculated that the unbalanced current and voltage with the effects of fault capacitor units,components and fuses on capacitor bank as well through a case of unbalance computation of shunt capacitor banks (SCB) of ungrounded single star with external fuse.It is indicated by PSCAD simulation analysis that the result of theory calculation is the same as the simulation,which provides theory basis of setting the tripping point and alarm point of relay protection.
unbalance protection safety SCB PSCAD
Xiao-ping Xiong Jing-jie Hu Qiang Fu
College of Electric Engineering,Guangxi University,Nanning 530004,Guangxi Zhuang Autonomous Region,C Anyang power supply Bureau,Anyang 455002,Henan Province,China
国际会议
2013 International Conference on Energy Research and Power Engineering(2013能源研究与电力工程国际会议)(ERPE2013)
郑州
英文
78-83
2013-05-24（万方平台首次上网日期，不代表论文的发表时间）