Research on Overvoltage Protection for ±500 kV Double-circuit HVDC Transmission System

LIAO Zhi-chao 1; HE Heng-xin 2; HAN Yun 1; ZHANG Jia-xin 2

doi:10.13296/j.1001-1609.hva.2013.05.012

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Research on Overvoltage Protection for ±500 kV Double-circuit HVDC Transmission System

更新时间：2025-04-26

- Research on Overvoltage Protection for ±500 kV Double-circuit HVDC Transmission System
- High VoltageApparatus Vol. 49, Issue 5, Pages: 60-68+73(2013)
- 作者机构：
  
  1. 西安高压电器研究院有限责任公司
  2. 华中科技大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.05.012
  CLC： TM721.1
- Published：2013
- 稿件说明：
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[1]廖志超,贺恒鑫,韩云,张佳鑫.同塔双回直流输电系统过电压特性研究[J].高压电器,2013,49(05):60-68+73.

LIAO Zhi-chao 1, HE Heng-xin 2, HAN Yun 1, et al. Research on Overvoltage Protection for ±500 kV Double-circuit HVDC Transmission System[J]. High voltageapparatus, 2013, 49(5): 60-68+73.
[1]廖志超,贺恒鑫,韩云,张佳鑫.同塔双回直流输电系统过电压特性研究[J].高压电器,2013,49(05):60-68+73. DOI： 10.13296/j.1001-1609.hva.2013.05.012.

LIAO Zhi-chao 1, HE Heng-xin 2, HAN Yun 1, et al. Research on Overvoltage Protection for ±500 kV Double-circuit HVDC Transmission System[J]. High voltageapparatus, 2013, 49(5): 60-68+73. DOI： 10.13296/j.1001-1609.hva.2013.05.012.

摘要

对于同塔双回直流输电系统

考虑到其线路之间的电磁耦合

一极发生故障将同时在健全极线感应出过电压

对正常运行极的换流站设备和线路造成影响

因此笔者认为对同塔双回直流输电系统换流站的过电压特性的研究是同塔双回直流输电工程设计的核心技术环节。为了进行具体的研究分析

笔者以溪洛渡±500 kV同塔双回直流输电工程为例

结合此工程主回路设计方案

利用PSCAD/EMTDC电磁暂态仿真软件

对±500 kV同塔双回直流输电工程的各种过电压特性进行系统研究。通过系统模拟仿真

综合分析避雷器限压作用的影响

这些研究对于防范类似故障的发生以及处理等具有一定的借鉴意义。

Abstract

For the double-circuit transmission line

there exist electrostatic coupling and electromagnetic coupling between the two lines.Once one-circuit fault

it will affects the other single-circuit normal operation.Therefore

the authors think that the studies on the over-voltage characteristics of double-circuit transmission line are the core technology of the double-circuit DC transmission engineering design.In this paper

to conduct specific research and analysis

take Xiluodu-Guangdong double-circuit transmission line as an example

binging the main circuit system design scheme

all kinds of over-voltage characteristics for ±500 kV double-circuit HVDC transmission system are studied by using PSCAD/EMTDC.Through the system simulation and comprehensive analysis of the surge arresters used

it is of a certain significance for preventing and dealing with similar faults.

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