地铁35kV备自投的分析

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摘要根据地铁35kV供电系统的特点,对主变电所、35kV变电所的备自投方式、动作逻辑、整定计算进行分析。对主变电所备自投与接地变保护的配合、35kV变电所备自投经线路差动保护起动及配置反应母线故障的保护闭锁备自投、配置备自投后加速保护等工程实践中存在的问题进行分析,并提出相应的改进措施以提高供电系统的可靠性。

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	闫石
	钟素梅

关键词 ：地铁, 35kV供电系统, 单母分段接线, 备自投, 动作逻辑

Abstract：Model, logic for action, setting calculation of backup power automatic switching of main substations and 35kV substations by characteristics of 35kV power system of metro are analyzed. Problems in practice such as cooperation between backup power automatic switching of main substations and protective relaying for grounding transformer, backup power automatic switching of 35kV substations started by differential protection for lines and protection to busbar faults set for blocking backup power automatic switching, setting of delayed accelerated protection are analyzed, and related improvements are also provided to improve reliability of power system.

Key words： metro 35kV power system sectionalized single busbar connection backup power automatic switching logic for action

收稿日期: 2019-05-09 出版日期: 2020-01-18

作者简介: 闫石（1985-）,男,黑龙江省哈尔滨市人,本科,工程师,主要从事用户供电系统建设和施工管理工作。

引用本文:

闫石, 钟素梅. 地铁35kV备自投的分析[J]. 电气技术, 2020, 21(1): 113-116. Yan Shi, Zhong Sumei. Analysis of 35kV backup power automatic switching in metro. Electrical Engineering, 2020, 21(1): 113-116.

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http://dqjs.cesmedia.cn/CN/Y2020/V21/I1/113