| 引用本文: | 唐杰,常鲜戎,宋振红,侯建涛,王兰涛.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.[点击复制] |
| TANG Jie,CHANG Xian-rong,SONG Zhen-hong,HOU Jian-tao,WANG Lan-tao.Principle and improvement on the application of RCS-915 numerical bus-bar protection[J].Power System Protection and Control,2008,36(2):74-78[点击复制] |
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| RCS-915型微机母线差动保护原理及应用改进 |
| 唐杰1,2,常鲜戎1,宋振红2,侯建涛3,王兰涛2 |
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| (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) |
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| 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 |
| 投稿时间：2007-07-11修订日期：2007-08-21 |
| 基金项目: |
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| Principle and improvement on the application of RCS-915 numerical bus-bar protection |
| TANG Jie1,2,CHANG Xian-rong1,SONG Zhen-hong2,HOU Jian-tao3,WANG Lan-tao2 |
| (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 |
