single-line to ground fault

Fusion strategy for single phase to ground fault detection implemented through fault measures and evidence theory

基于故障测度概念与证据理论的配电网单相接地故障多判据融合

When single-phase ground fault occurs, it is easy to form arc on the earthing point.

当中性点不接地电网发生单相接地故障时，接地点易形成电弧。

In order to greatly enhance the zero-sequence current active component during the single-phase ground fault, the short-time switch and the resistance paralleled with the petersen coil were controlled when there is a permanent single-phase ground fault in the system.

该方法当系统发生永久性单相接地故障时通过控制开关短时投切与消弧线圈并联的电阻，从而大大增强单相接地故障时的零序电流有功分量。

Further analysis of single-phase ground fault other than the failure of the formation process, and the failure process of voltage and current wave recording records and found that most of the short circuit between phases is also due to the initial single-phase ground fault evolved.

进一步分析单相接地故障以外的故障的形成过程，以及故障过程中电压、电流的录波记录，发现大多数相间短路也是由于最初的单相接地故障发展而来的。

And besides, elementary research has been done at judgement on single phase-to-ground fault type with judging theory and corresponding circuit proposed, which lay a foundation for implementation of new mode.

同时，本文对单相接地故障类型的判断进行了初步的研究，提出了判据及其实现电路，仿真表明该判据及其实现电路是合理可行的，从而为新方式的实施奠定了必要的基础。

It is implemented by the FTUs' calculating and analyzing for the sampling parameters for the diagnosis of the single phase fault and the phase to phase fault, the fault location, the fault isolation and the analysis and measurement of ground fault.

通过FTU对采集量的计算和分析实现了单相短路和相间短路故障的判断以及故障定位、故障隔离及接地故障分析和检测等功能。