发明授权
- 专利标题： Device and a method for voltage control in an electric transmission network
- 专利标题（中）： 电力传输网络中的电压控制装置及方法
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申请号： US10433085申请日： 2001-11-20
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公开(公告)号： US06984962B2公开(公告)日： 2006-01-10
- 发明人: Lennart Ängquist , Björn Thordvaldsson
- 申请人： Lennart Ängquist , Björn Thordvaldsson
- 申请人地址： SE Västerås
- 专利权人： ABB AB
- 当前专利权人： ABB AB
- 当前专利权人地址： SE Västerås
- 代理机构： Venable LLP
- 代理商 Eric J. Franklin
- 优先权： SE0004415 20001130
- 国际申请： PCT/SE01/02557 WO 20011120
- 国际公布： WO02/45235 WO 20020606
- 主分类号： G05F1/70
- IPC分类号： G05F1/70 ; G05F3/00
摘要：
A device for control of a compensator connected to a polyphase electric transmission network for reactive electric power in dependence on a voltage sensed in the transmission network. A voltage controller, in dependence on the difference of a reference value for the voltage and its sensed value, forms a reference value for a reactive power flow through the compensator. A transformation element represents the sensed voltage as a voltage vector in a rotating two-phase system of coordinates and forms a compensation signal in dependence on a sensed change of the angular position of the voltage vector in the two-phase system of coordinates. A summation element forms the reference value for reactive power flow through the compensator in dependence on the compensation signal.
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