Fault phase fast detection of the single-phase-to-ground fault in a power distribution network

被引：0

作者：

Ye Y. ^{[1
]}

Cai X. ^{[2
]}

Xie M. ^{[1
]}

Xu B. ^{[3
]}

Wei L. ^{[4
]}

机构：

[1] Anhui Electric Power Dispatch Center, Hefei

[2] Shanghai Lanrui Electric Co., Ltd., Shanghai

[3] School of Electrical Engineering, Shanghai University of Electric Power, Shanghai

[4] Shanghai Sieyuan Electric Co., Ltd., Shanghai

来源：

| 1600年 / Power System Protection and Control Press卷 / 49期

关键词：

Fault phase detection; Fault phase voltage; Neutral voltage; Single-phase-to-ground fault;

D O I：

10.19783/j.cnki.pspc.200360

中图分类号：

学科分类号：

摘要：

In a power distribution network, the traditional single-phase-to-ground fault phase detection method needs to consider the phase sequence and amplitude of voltage to determine the fault phase. However, it is difficult to measure the phase angle in a high impedance grounded fault. As a result, it is more difficult to determine the fault phase. The relationship between the phase voltage and the neutral displacement voltage are analyzed when a single-phase grounded fault occurs in a small current grounded system. This paper proposes a simplified method to detect the fault phase directly and quickly according to the neutral displacement voltage and phase voltages. Finally, a simulation model is built in PSCAD/EMTDC, and the results show that the proposed method can accurately identify the fault phase in the case of different fault resistances. © 2021, Power System Protection and Control Press. All right reserved.

引用

页码：96 / 103

页数：7

共 36 条

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