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1. 发明授权

US4953052A Pole slip protection circuit for paralleled generators 失效
标题翻译：用于平行发电机的极滑保护电路
公开(公告)号：US4953052A
公开(公告)日：1990-08-28
申请号：US381855
申请日：1989-07-19
申请人： Norman Cartlidge , Luiz Andrade , James Thom
发明人： Norman Cartlidge , Luiz Andrade , James Thom
IPC分类号： H02H7/06 , H02J3/40
CPC分类号： H02H7/062 , H02J3/40 , Y10T307/735 , Y10T307/852
摘要： A protection system (80) for a first generator unit (12) connectible by a first switch (24) to a power generating system having at least one additional generator unit with the at least one additional generator unit being connectible in parallel to the first generator unit with the first switch being opened in response to a first control signal to enable the first generator unit to be disconnected from the parallel connection to the at least one additional generator unit in accordance with the invention includes a signal generator (12) for generating a reference signal having a frequency proportional to a frequency of a voltage generated by the first generator unit; a sensor (14) for sensing a common frequency at a point of reference of voltage generated by the generator units of the power generating system; and a controller (14) responsive to the signal generator and the sensor, for calculating a difference between the frequency of the reference signal and the common frequency and for generating the first control signal in response to the difference being greater than a threshold.
摘要翻译：一种用于第一发电机单元（12）的保护系统（80），其可由第一开关（24）连接到具有至少一个附加发电机单元的发电系统，所述至少一个附加发电机单元可与第一发电机并联连接单元，其中第一开关响应于第一控制信号而被打开，以使得第一发电机单元能够从与所述至少一个附加发电机单元的并联连接断开，根据本发明包括一个信号发生器（12）参考信号具有与由第一发生器单元产生的电压的频率成比例的频率; 传感器（14），用于感测由所述发电系统的发电机单元产生的电压的参考点处的公共频率; 以及响应于所述信号发生器和所述传感器的控制器（14），用于计算所述参考信号的频率与所述公共频率之间的差，并且响应于所述差大于阈值来产生所述第一控制信号。

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