Method of Fault Detection and Processing Strategy for Hybrid HVDC Transmission

doi:10.13296/j.1001-1609.hva.2019.07.026

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Method of Fault Detection and Processing Strategy for Hybrid HVDC Transmission

更新时间：2025-04-26

- Method of Fault Detection and Processing Strategy for Hybrid HVDC Transmission
- High VoltageApparatus Vol. 55, Issue 7, Pages: 181-186(2019)
- 作者机构：
  
  1. 国网浙江省电力公司科学研究院
  2. 浙江大学电气工程学院
  3. 全球能源互联网研究院有限公司
  4. 直流电网技术与仿真北京市重点实验室(全球能源互联网研究院有限公司)
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.07.026
  CLC： TM721
- Published：2019
- 稿件说明：
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[1]郑眉,李威,常彬,闫鹤鸣,徐政.一种混合直流输电故障检测和处理策略[J].高压电器,2019,55(07):181-186.

Method of Fault Detection and Processing Strategy for Hybrid HVDC Transmission[J]. High VoltageApparatus, 2019, 55(7): 181-186.
[1]郑眉,李威,常彬,闫鹤鸣,徐政.一种混合直流输电故障检测和处理策略[J].高压电器,2019,55(07):181-186. DOI： 10.13296/j.1001-1609.hva.2019.07.026.

Method of Fault Detection and Processing Strategy for Hybrid HVDC Transmission[J]. High VoltageApparatus, 2019, 55(7): 181-186. DOI： 10.13296/j.1001-1609.hva.2019.07.026.

摘要

混合高压直流输电技术将传统高压直流输电技术的经济性与柔性高压直流输电技术的安全性和稳定性相结合

无疑将成为未来高压直流输电技术的研究热点。VSC站直流侧故障的快速检测和隔离技术一直是混合直流电网发展的主要技术瓶颈之一。高压直流断路器是解决这一问题的重要手段

也是当前研究的热点。根据高压直流断路器的工作过程

分别对高压直流断路器的故障检测和限流控制进行了分析

提出了基于ROCOV（电压变化率）故障检测方法以及分步投入避雷器的限流策略

减少了断路器的动作时间和故障电流峰值。最后

在PSCAD/EMTDC上进行仿真分析

验证直流断路器保护方案的可靠性和快速性。

Abstract

Hybrid HVDC transmission technology has become the research focus of HVDC technology in the futurebecause it combines the economy of traditional HVDC technology and the security and stability of flexible HVDCtechnology. Fast detection and isolation of DC side faults in VSC stations is always one of the main technical bottle-necks in the development of hybrid DC power grid. High-voltage DC circuit breaker is an important device to solvethis problem

and it is also a hot spot of current research. According to the working process of high voltage DC circuitbreaker

this paper analyzes the fault detection and current limit control of high voltage DC circuit breaker respec-tively

and proposes the fault detection method based on ROCOV（rate of change of voltage） and a current limitingstrategy of operation of arresters by sequence. The strategy can reduce the action time and fault current peak of thecircuit breaker. Finally

the simulation analysis is carried out on PSCAD/EMTDC to verify the reliability and speedof the DC circuit breaker protection scheme.

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