The paper research theeffect of three-phase unbalance by unbalance of earthed capacitor, Analyze how toeffect fault selection and propose a method to resolve this problem.

• 本文针对由对地电容不对称引起的三相不平衡电流进行理论推导,以能量法为例具体分析了对选线影响的,并且借助有效域的思想提出了具体的解决办法;