RCS-915型微机母线差动保护原理及应用改进

唐杰<sup>1; 2</sup>; 常鲜戎<sup>1</sup>; 宋振红<sup>2</sup>; 侯建涛<sup>3</sup>; 王兰涛<sup>2</sup>

引用本文:	唐杰,常鲜戎,宋振红,等.RCS-915型微机母线差动保护原理及应用改进[J].电力系统保护与控制,2008,36(2):74-78.
	TANG Jie,CHANG Xian-rong,SONG Zhen-hong,et al.Principle and improvement on the application of RCS-915 numerical bus-bar protection[J].Power System Protection and Control,2008,36(2):74-78

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RCS-915型微机母线差动保护原理及应用改进
唐杰¹, 常鲜戎, 宋振红², 侯建涛³, 王兰涛
1.华北电力大学,河北保定 071003;2.河北保定供电公司,河北保定 071051;3.保定市政府,河北保定 071000

摘要:

RCS－915型微机母线保护装置，适用于各种电压等级的单母线、单母线分段、双母线等各种主接线方式。装置设有母线差动保护等保护功能。但在实际试验及应用中，作者发现：母联开关在分位，母线电压正常，而PT二次侧连接的电压保险或电压空气小开关出现故障，即二次电压不能正确反映一次电压的情况下，故障发生在故障死区时，母差保护会出现误判现象，跳开非故障母线，从而导致停电范围的扩大。通过对差动保护逻辑框图的深入分析，文中给出了解决此问题的方法，从而避免了非故障线路的误动，减少了停电范围，有着非常重要的工程实用价值。

关键词: 微机母线保护差动保护母联母联死区保护

DOI：10.7667/j.issn.1674-3415.2008.02.017

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基金项目:

Principle and improvement on the application of RCS-915 numerical bus-bar protection

TANG Jie¹, CHANG Xian-rong, SONG Zhen-hong², HOU Jian-tao³, WANG Lan-tao

1. North China Electric Power University, Baoding 071051,China;2. Baoding Electric Power Company, Baoding 071051,China;3.The Government of Baoding, Baoding 071000,China

Abstract:

This paper introduces the differential protection’s new principle’s appliance and the principle of RCS -915 numerical bus-bar protection. In fact, when the fault occurs at dead zone ,the voltage of the bus-bar is normal ,while there is some problem in voltage fuse of secondary of PT, so, secondary voltage can not reflect the primary , as a result , the result is not true, to expend the outage dimension. By analysis , the paper proposes a new program, which can avoid the default and reduce the outage dimension.

Key words: microcomputer-based bus protection differential protection bus connection busbar deadzone protection

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