A protection method for shunt capacitor bank in mine-used reactive power compensation device
HE Ziyuan
YU Qun
CHEN Zhihui
Abstract：For high cost,poor sensitivity,complex protection setting calculation existed in current protection methods for shunt capacitor band in mine-used reactive power compensation device,characteristics of capacitor current distribution and fault were analyzed when shunt capacitor bank in mineused reactive power compensation device broke down,and conclusions were gotten including that three-phase unbalanced grounding capacitor current would result in non-zero zero-sequence current when fault occurred,and zero-sequence current of non-fault capacitor bank was different with the one of fault capacitor bank.According to above conclusions,a protection method for shunt capacitor bank in reactive power compensation device was proposed which took zero-sequence current as criteria.The simulation results verify effectiveness and feasibility of the method.
Keywords：mine power networkreactive power compensation deviceshunt capacitor bankzero-sequence current
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 73-76 )