发明授权
- 专利标题: Synchronization method for current differential protection
- 专利标题(中): 电流差动保护同步方法
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申请号: US13876320申请日: 2010-11-09
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公开(公告)号: US08791730B2公开(公告)日: 2014-07-29
- 发明人: Youyi Li , Bin Su , Ying Yang , Torbjorn Einarsson , Zoran Gajic
- 申请人: Youyi Li , Bin Su , Ying Yang , Torbjorn Einarsson , Zoran Gajic
- 申请人地址: CH Zurich
- 专利权人: ABB Research Ltd.
- 当前专利权人: ABB Research Ltd.
- 当前专利权人地址: CH Zurich
- 代理机构: Driggs, Hogg, Daugherty & Del Zoppo Co., LPA
- 代理商 Anthony M. Del Zoppo, III
- 国际申请: PCT/CN2010/078562 WO 20101109
- 国际公布: WO2012/061978 WO 20120518
- 主分类号: H03L7/00
- IPC分类号: H03L7/00
摘要:
A synchronization method for current differential protection comprises: selecting a point on the transmission line protected by the current differential protection; measuring the current and the voltage of each of the terminals of said transmission line; calculating the compensating voltage at the selected point respectively according to the measured current and the voltage of the each terminal; detecting and calculating the synchronization error by comparing all the compensating voltages.
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