![一种基于单侧电流的半波长线路自由波能量保护选相方法](/CN/2016/1/13/images/201610066991.jpg)
基本信息:
- 专利标题: 一种基于单侧电流的半波长线路自由波能量保护选相方法
- 专利标题(英):Unilateral current based half-wavelength circuit free wave energy protection phase selection method
- 申请号:CN201610066991.2 申请日:2016-01-29
- 公开(公告)号:CN105720565A 公开(公告)日:2016-06-29
- 发明人: 王德林 , 柳焕章 , 周泽昕 , 梁旭明 , 郭雅蓉 , 杜丁香 , 王兴国 , 李肖 , 范红
- 申请人: 中国电力科学研究院 , 国家电网公司 , 国家电网公司华中分部
- 申请人地址: 北京市海淀区清河小营东路15号
- 专利权人: 中国电力科学研究院,国家电网公司,国家电网公司华中分部
- 当前专利权人: 中国电力科学研究院,国家电网公司,国家电网公司华中分部,国网江苏省电力公司电力科学研究院
- 当前专利权人地址: 北京市海淀区清河小营东路15号
- 代理机构: 北京安博达知识产权代理有限公司
- 代理人: 徐国文
- 主分类号: H02H7/26
- IPC分类号: H02H7/26
The invention relates to a unilateral current based half-wavelength circuit free wave energy protection phase selection method. The protection phase selection method comprises the steps of filtering fundamental components from current based on phases; performing integration on the sampling value of the current variable quantity after the fundamental components are filtered, wherein the integration interval is matched with the integration intervals in the free wave energy protection sections I, II and III; distinguishing internal and external faults by comparing the magnitudes of the free wave energy after fault comparison; enabling phase selection elements and free wave energy protection to be matched, and then outputting through an AND logic outlet to realize fault phase selective tripping. By adoption of the technical scheme, the problem that fault phase selection cannot be carried out through the free wave energy protection due to the reason that the quadratic sum of the three-phase current is required in the protection criterion of the free wave energy protection is solved.
公开/授权文献:
- CN105720565B 一种基于单侧电流的半波长线路自由波能量保护选相方法 公开/授权日:2019-05-21
IPC结构图谱:
H | 电学 |
--H02 | 发电、变电或配电 |
----H02H | 紧急保护电路装置 |
------H02H7/00 | 当出现正常工作条件的不希望有的变化时能完成自动切换的,专用于特种电机或电设备的或专用于电缆或线路系统分段保护的紧急保护电路装置 |
--------H02H7/26 | .电缆或线路系统的分段保护,例如当发生短路、接地故障或电弧放电时切断一部分电路 |