Measurement of Short Circuit Current Distribution in ±500 kV Converter Station at AC Artificial Grounding Fault

MA Yi; HUANG Caowei; MENG Yongchang; MA Yutang; ZHOU Fangrong; HE Jinliang

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Measurement of Short Circuit Current Distribution in ±500 kV Converter Station at AC Artificial Grounding Fault

更新时间：2025-12-08

- Measurement of Short Circuit Current Distribution in ±500 kV Converter Station at AC Artificial Grounding Fault
- Vol. 44, Issue 3, Pages: 827-834(2018)
- 作者机构：
  
  1. 云南电网公司有限责任公司电力科学研究院
  2. 清华大学电机系电力系统及发电设备控制和仿真国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 March 2018，
  
  Published：2018
- 稿件说明：
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MA Yi, HUANG Caowei, MENG Yongchang, et al. Measurement of Short Circuit Current Distribution in ±500 kV Converter Station at AC Artificial Grounding Fault[J]. 2018, 44(3): 827-834.
DOI：

MA Yi, HUANG Caowei, MENG Yongchang, et al. Measurement of Short Circuit Current Distribution in ±500 kV Converter Station at AC Artificial Grounding Fault[J]. 2018, 44(3): 827-834. DOI：

摘要

单相对地短路是电力系统中常见的故障

而短路电流的分布对接地网安全性评估非常重要

由于短路试验非常复杂

现场实测数据非常少

Abstract

Single phase-to-ground short circuit is one of the common faults in electric power system

and the distribution of short circuit current is very important for the evaluation of the safety of grounding system. Because of the complexity of the grounding fault tests

the measured data from tests are rare and valuable

and the detailed distribution of short circuit current in converter station has not been investigated currently. Based on the AC artificial grounding fault test at Funing 500 kV converter station

we experimentally investigated the short circuit current distribution of 500 k V converter station for the first time. After analyzing and simulating the flow direction and value of short circuit current

we proposed a measurement scheme. Measured currents of the grounding device

ground wires of the transmission lines and transformer’s neutral-point are provided and compared with PSCAD simulation results together with proper analyzation. Results show that about 40% of the short circuit current is discharged from the earth of the fault tower

about 60% discharged from the ground wires of the fault line

among which about 20% of the short current is discharged from the ground wires close to the opposite converter station

about 30% of the short current is discharged from the grounding grid of the converter station. Meanwhile

currents which flow through the ground wires of the non-fault lines and transformer’s neutral-point are both less than 7%

which means that when the fault takes place at AC part

it is not necessary to measure the shunt current from the DC ground wires and the transformers neutral-point.

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Related Author

MA Yutang

HUANG Caowei

WANG Ke

ZHANG Bo

HE Jinliang

ZHOU Fangrong

ZHOU Enze

FAN Lingmeng

Related Institution

Electric Power Science Research Institute of Yunnan Power Supply Company

State Key Laboratory of Control and Simulation of Power System, Department of Electrical Engineering, Tsinghua University

Electric Power Research Institute of Guangdong Power Grid Co., Ltd.

China Southern Power Grid, Co., Ltd.

School of Electrical Engineering and Automation, Wuhan University

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