Invention Grant
- Patent Title: Synchronization method for current differential protection
- Patent Title (中): 电流差动保护同步方法
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Application No.: US13876320Application Date: 2010-11-09
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Publication No.: US08791730B2Publication Date: 2014-07-29
- Inventor: Youyi Li , Bin Su , Ying Yang , Torbjorn Einarsson , Zoran Gajic
- Applicant: Youyi Li , Bin Su , Ying Yang , Torbjorn Einarsson , Zoran Gajic
- Applicant Address: CH Zurich
- Assignee: ABB Research Ltd.
- Current Assignee: ABB Research Ltd.
- Current Assignee Address: CH Zurich
- Agency: Driggs, Hogg, Daugherty & Del Zoppo Co., LPA
- Agent Anthony M. Del Zoppo, III
- International Application: PCT/CN2010/078562 WO 20101109
- International Announcement: WO2012/061978 WO 20120518
- Main IPC: H03L7/00
- IPC: H03L7/00
Abstract:
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.
Public/Granted literature
- US20130181755A1 SYNCHRONIZATION METHOD FOR CURRENT DIFFERENTIAL PROTECTION Public/Granted day:2013-07-18
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