![风电接入交直流混联电网的750kV线路保护系统](/CN/2014/1/37/images/201410187640.jpg)
基本信息:
- 专利标题: 风电接入交直流混联电网的750kV线路保护系统
- 专利标题(英):750 kV line protection system of wind electricity connecting alternating-current/direct-current parallel-serial power grid
- 申请号:CN201410187640.8 申请日:2014-05-06
- 公开(公告)号:CN103986131A 公开(公告)日:2014-08-13
- 发明人: 路亮 , 何世恩 , 汪宁渤 , 康小宁 , 丁坤 , 李津 , 周识远
- 申请人: 国家电网公司 , 国网甘肃省电力公司 , 甘肃省电力公司风电技术中心 , 西安交通大学
- 申请人地址: 北京市西城区西长安街86号
- 专利权人: 国家电网公司,国网甘肃省电力公司,甘肃省电力公司风电技术中心,西安交通大学
- 当前专利权人: 国家电网公司,国网甘肃省电力公司,甘肃省电力公司风电技术中心,西安交通大学
- 当前专利权人地址: 北京市西城区西长安街86号
- 代理机构: 北京中恒高博知识产权代理有限公司
- 代理人: 宋敏
- 主分类号: H02H7/26
- IPC分类号: H02H7/26
The invention discloses a 750 kV line protection system of a wind electricity connecting alternating-current/direct-current parallel-serial power grid. The system comprises main protection configuration, backup protection configuration and a phase selection element. According to the main protection configuration, optical fiber differential protection and high-frequency longitudinal-connecting direction protection based on full-amount direction or full-amount distance are used, and time domain or frequency domain longitudinal-connecting protection based on model inductive-capacitive judging is used. According to the backup protection configuration, the zero sequence and distance protection based on full amount are used. The phase selection element is based on difference current. The purpose of power grid safe and stable operation under the situation that large-scale wind electricity is connected into the alternating-current/direct-current parallel-serial power grid is achieved.
公开/授权文献:
- CN103986131B 风电接入交直流混联电网的750kV线路保护系统 公开/授权日:2017-05-31
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 |