Analysis on the Fault Trip of Bipole DC Line Protection in Tianguang HVDC

TIAN Qing

doi:10.13296/j.1001-1609.hva.2012.04.007

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Analysis on the Fault Trip of Bipole DC Line Protection in Tianguang HVDC

更新时间：2025-04-26

- Analysis on the Fault Trip of Bipole DC Line Protection in Tianguang HVDC
- High VoltageApparatus Vol. 48, Issue 4, Pages: 33-38(2012)
- 作者机构：
  
  南方电网超高压输电公司检修试验中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2012.04.007
  CLC： TM773
- Published：2012
- 稿件说明：
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[1]田庆.天广工程直流线路突变量保护误动作分析[J].高压电器,2012,48(04):33-38.

TIAN Qing. Analysis on the Fault Trip of Bipole DC Line Protection in Tianguang HVDC[J]. High voltageapparatus, 2012, 48(4): 33-38.
[1]田庆.天广工程直流线路突变量保护误动作分析[J].高压电器,2012,48(04):33-38. DOI： 10.13296/j.1001-1609.hva.2012.04.007.

TIAN Qing. Analysis on the Fault Trip of Bipole DC Line Protection in Tianguang HVDC[J]. High voltageapparatus, 2012, 48(4): 33-38. DOI： 10.13296/j.1001-1609.hva.2012.04.007.

摘要

笔者分析了天广直流控制保护系统改造完成后发生的3次双极线路保护动作事件

剖析其中直流线路突变量保护误动作的原因。根据天生桥换流站和广州换流站的实际录波和实际过程

结合厂家给出的突变量保护定值和整定思想

分析导致突变量保护误动作的因素。笔者给出了2个解决方案——降低低电压保护定值和增大突变量保护的动作延时

并经实践验证正确

为以后更好地实施直流控制保护系统国产化改造提供参考。

Abstract

This paper analyses three bipole line protection accidents after the completion of the Tianguang HVDC control and protection regenerated system.The reason of DC line dU/dt protection fault trip is given according to the transient fault record in Tianshenqiao convertor station and Guangzhou convertor station.The set value of dU/dt protection and the setting process are studied in order to understand the fault trip.Two corresponding methods

lowing the under voltage protection value and increasing the dU/dt protection value

are put forward which are proved by the field effect.When these methods are utilized in future China home-produced HVDC control and protection system

the HVDC can operate better.

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