故障点故障分量电流电压相量分析

Phasor analysis of current and voltage fault components in fault point

故障分量原理在微机保护中大量应用,而故障分量存在于故障分量网络中,因此,有必要建立短路故障时的故障分量网络,画出故障点电流、电压故障分量相量图。按对称分量概念,求其故障点各序电流、电压,以便理解故障分量原理的微机保护。

The principle of fault component is widely applied in microcomputer protection.The fault components exist in fault component network.Therefore,it is necessary to establish the fault component network for short circuit fault,and to draw the phasor diagram of current and voltage fault component of fault point.Then according to the concept of symmetrical components,the zero sequence,positive sequence and negative sequence fault components of current and voltage can be obtained,and this is helpful for understanding the microcomputer protection based on the fault component principle.