发明授权
- 专利标题: System and method for operating an on-load tap changer
- 专利标题(中): 用于操作有载分接开关的系统和方法
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申请号: US14164620申请日: 2014-01-27
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公开(公告)号: US09570252B2公开(公告)日: 2017-02-14
- 发明人: Piniwan Thiwanka Bandara Wijekoon , Eva-Maria Baerthlein , Simon Herbert Schramm , Stefan Schroeder , Ara Panosyan , Rohit Kumar Gupta
- 申请人: General Electric Company
- 申请人地址: US NY Niskayuna
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: US NY Niskayuna
- 代理商 Nitin N. Joshi
- 主分类号: H01H9/00
- IPC分类号: H01H9/00 ; H01H9/54 ; H01F29/04
摘要:
A system for operating an on-load tap changer (OLTC) includes a plurality of legs that include mechanical switches. At least one leg switches from a first to a second tap of the OLTC on receipt of a tap change signal. At least one mechanical switch is activated to establish an electrical connection between one of the first and the second tap and a power terminal of the OLTC. Further, the system includes semiconductor switches that are parallel to the mechanical switches and when activated electrically couple one of the first and the second tap and the power terminal. The system includes a processing unit that selectively activates and deactivates the mechanical and semiconductor switches in such a way that electrical contact is maintained between at least one of the taps and the power terminal during the transition of at least one leg from the first tap to the second tap.
公开/授权文献
- US20150213971A1 SYSTEM AND METHOD FOR OPERATING AN ON-LOAD TAP CHANGER 公开/授权日:2015-07-30