Influence of Different Operation Conditions of Electrified Railway on the Line Protection of Power System

LI Feng; FAN Yanfang; WANG Xiaofei; FENG Xiaoping; YANG Bin

doi:10.14044/j.1674-1757.pcrpc.2017.02.021

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Influence of Different Operation Conditions of Electrified Railway on the Line Protection of Power System

更新时间：2024-09-14

- Influence of Different Operation Conditions of Electrified Railway on the Line Protection of Power System
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 38, Issue 2, Pages: 111-117(2017)
- 作者机构：
  
  1. 新疆大学电气工程学院
  2. 国网新疆电力调度控制中心
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2017.02.021
  CLC： TM773
- Published：2017，
- 稿件说明：
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[1]李锋,樊艳芳,王晓飞,冯小萍,杨斌.电铁不同运行工况对电力系统线路保护的影响[J].电力电容器与无功补偿,2017,38(02):111-117.

LI FENG, FAN YANFANG, WANG XIAOFEI, et al. Influence of Different Operation Conditions of Electrified Railway on the Line Protection of Power System. [J]. Power capacitor & reactive power compensation, 2017, 38(2): 111-117.
[1]李锋,樊艳芳,王晓飞,冯小萍,杨斌.电铁不同运行工况对电力系统线路保护的影响[J].电力电容器与无功补偿,2017,38(02):111-117. DOI： 10.14044/j.1674-1757.pcrpc.2017.02.021.

LI FENG, FAN YANFANG, WANG XIAOFEI, et al. Influence of Different Operation Conditions of Electrified Railway on the Line Protection of Power System. [J]. Power capacitor & reactive power compensation, 2017, 38(2): 111-117. DOI： 10.14044/j.1674-1757.pcrpc.2017.02.021.

摘要

电铁作为不对称负荷接入电网

给电网的稳定运行、继电保护带来一定挑战。为了分析电铁接入后对周边区域电网线路继电保护的影响

文中结合新疆某地区电铁接入实际电网

考虑电铁多种运行工况、不同微机继电保护算法下

仿真分析电铁接入对电网线路保护阻抗测量元件与故障选相元件的影响。分析结果表明当电铁的供电负荷或制动负荷达到一定值时将会造成测量阻抗计算误差过大以及故障选相元件的错误选相

进而造成继电保护装置的误动作。

Abstract

Electrified railway

with connection to the grid as asymmetrical loads

will bring a definite challenge to the stable operation and relay protection of grid. For the analysis of influence of the electrified railway after connection on the surrounding line relay protection of regional grid

in this paper

the influence of electrified railway on the measurement element of line protection impedance and fault phase selection element after connecting to the grid is analyzed by the simulation in accordance with the real grid of electrified railway at certain area of Xinjiang

consideration of different kinds of operation conditions and under different microcomputer relay protection algorithm. It is shown by the analysis result that when the power load and brake load of the electrified railway reaches a definite value

it will cause excessive measurement impedance calculation error and incorrect selection of fault phase selection element

thus causing mal-operation of the relay protection device.

关键词

电铁运行工况继电保护阻抗测量元件故障选相元件

Keywords

electrified railwayoperation conditionsrelay protectionimpedance measuring elementsfault phase selection element

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