发明名称 |
OPTIMAL HVDC BY-PASS POINT-ON-WAVE INDUCTIVE LOAD SWITCHING |
摘要 |
The invention relates to a method of opening a shunt switch carrying a current, the switch being connected in parallel with at least one thyristor of a high voltage DC network, interruption of the current flowing through the switch being initiated at the time of a current zero of the current flowing through the switch, the method being characterized in that it includes, based on a measurement effected by means for measuring the current flowing through the switch, a step of adjusting a control angle of the thyristor to position the current zero in a zone in which the time derivative of the measured current is a continuous function and the absolute value of a peak value of the measured current is substantially equal to the absolute value of the inaccuracy of the measurement of the current zero. |
申请公布号 |
US2014347101(A1) |
申请公布日期 |
2014.11.27 |
申请号 |
US201214345421 |
申请日期 |
2012.09.20 |
申请人 |
ALSTOM Technology Ltd |
发明人 |
Grieshaber Wolfgang;Dupraz Jean-Pierre |
分类号 |
H03K17/13;H03K17/94;G01R19/00 |
主分类号 |
H03K17/13 |
代理机构 |
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代理人 |
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主权项 |
1. A method of opening a shunt switch (8, 9, 10, 11) carrying a current, the switch being connected in parallel with at least one thyristor (4, 5, 6, 7) of a high voltage DC network, interruption of the current flowing through the switch being initiated at the time of a current zero of the current flowing through the switch, the method being characterized in that it includes, based on a measurement effected by means (M) for measuring the current flowing through the switch, a step of adjusting a control angle of the thyristor to position the current zero in a zone in which the time derivative of the measured current is a continuous function and the absolute value of a peak value of the measured current is substantially equal to the absolute value of the inaccuracy of the measurement of the current zero. |
地址 |
Baden CH |