一起直流接线错误引起的环网故障分析

doi:10.3969/j.issn.1008-0198.2022.03.020

湖南电力 ›› 2022, Vol. 42 ›› Issue (3): 109-112.doi: 10.3969/j.issn.1008-0198.2022.03.020

• 故障与分析 • 上一篇

一起直流接线错误引起的环网故障分析

高研

长安益阳发电有限公司,湖南益阳 413000

收稿日期:2022-02-05 修回日期:2022-03-11 出版日期:2022-06-25 发布日期:2022-10-14
作者简介:高研(1994),男,陕西咸阳人,助理工程师,研究方向为电力系统继电保护。

Analysis of A Ring Network Fault Caused by DC Wiring Error

GAO Yan

Chang′an Yiyang Power Generation Co., Ltd., Yiyang 413000, China

Received:2022-02-05 Revised:2022-03-11 Online:2022-06-25 Published:2022-10-14

摘要/Abstract

摘要： 发电厂电缆绝缘老化、施工受损、积水受潮、接线错误等,往往会破坏直流系统的绝缘水平,影响着机组的安全稳定运行。针对某电厂2号机组运行时两组直流绝缘监测装置同时故障报警,但两组直流母线电压均正常的现象,排查出直流系统存在环网故障,对该现象进行了理论分析,总结直流系统环网时的故障规律,为直流系统的可靠运行提出建议。

关键词: 直流系统, 环网故障, 电缆绝缘

Abstract: The insulation level of DC system is often damaged due to aging of power cable insulation, damaged construction, damp accumulation and faulty wiring, which affects the safe and stable operation of units. In the light of the phenomenon that two sets of DC insulation monitoring devices are given an alarm at the same time but both sets of DC bus voltage are normal during the operation of unit 2 of a power plant, it is found that there is a loop network fault in the DC system, and this phenomenon is theoretically analyzed, the fault rules of DC system loop network are summarized, and some suggestions for reliable operation of DC system are put forward.

Key words: DC power supply system, loop net fault, cable insulation

中图分类号:

TM645.2

高研. 一起直流接线错误引起的环网故障分析[J]. 湖南电力, 2022, 42(3): 109-112.

GAO Yan. Analysis of A Ring Network Fault Caused by DC Wiring Error[J]. Hunan Electric Power, 2022, 42(3): 109-112.

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一起直流接线错误引起的环网故障分析

Analysis of A Ring Network Fault Caused by DC Wiring Error

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