【摘要】 用电压向量图和数字仿真的方法分析了双下偏 I0 极化接地距离继电器、工频变化量距离继电器、零序电抗继电器等在平行双回线的动作特性 ,最后提出了一种直接比较两回线零序电流的接地故障保护新方案更多还原

【Abstract】 The performance of some relays is analyzed on the condition of double lines. These relays include 0 polarized relay with double declinational angles, fundamental component mutation realy and zero sequence reactance relay. In addition, improvement is discussed and a new scheme for the comparison of the zero sequence current between the two lines on parallel-wire line is put forward.更多还原