广东电力2017，Vol.30Issue(1)：121-125,5.DOI:10.3969/j.issn.1007-290X.2017.01.023
一起交流滤波器保护误动引起直流极闭锁的故障分析
Fault Analysis on DC Bipolar Blocking Caused by AC Filter Protection Malfunction
郭卫明 1黄华 1蔡国准 1梁秉岗1
作者信息
- 1. 南方电网超高压输电公司广州局,广东广州510663
- 折叠
摘要
Abstract
In order to solve the problem of reduction of DC transmission power caused by DC bipolar blocking due to connection differential protection of AC filters (ACF),this paper analyzes reasons by combining one case of ACF connection differential protection and the last breaker logic of AC station control system.It states the reason for differential protection malfunction is fault of sampling channel of the ACF protection device and points out the reason for DC bipolar blocking is wrong configuration of AC station control point.Therefore,it proposes optimizing suggestions to improve reliability of DC power transmission such as using converter transformer primary voltage and leakage current of inlet arrestor of the converter transformer to evaluate break state of the last breaker,optimizing judging logic of the last breaker,and so on.关键词
交流滤波器/连线差动/最后断路器/交流站控/直流极闭锁Key words
AC filter/connection differential protection/last breaker/AC station control/DC bipolar blocking分类
信息技术与安全科学引用本文复制引用
郭卫明,黄华,蔡国准,梁秉岗..一起交流滤波器保护误动引起直流极闭锁的故障分析[J].广东电力,2017,30(1):121-125,5.
