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52. 发明申请

US20080157728A1 Reactive-power control apparatus and reactive-power compensator using the same 有权
标题翻译：无功功率控制装置和无功功率补偿器
公开(公告)号：US20080157728A1
公开(公告)日：2008-07-03
申请号：US11819038
申请日：2007-06-25
申请人： Naohiro Toki , Masatoshi Takeda , Yoshiyuki Kono , Koji Temma
发明人： Naohiro Toki , Masatoshi Takeda , Yoshiyuki Kono , Koji Temma
IPC分类号： H02J3/18
CPC分类号： H02J3/1864 , Y02E40/12
摘要： In a conventional reactive-power compensator using a static reactive-power compensator (SVC), there are many cases in which the SVC is operating in a state in which it generates an amount of reactive power equivalent to a large part of its capacity. When an unforeseen large voltage fluctuation occurs in this state, the SVC can not sufficiently generate the amount of reactive power required to mitigate the voltage fluctuation. In some cases, such a voltage fluctuation can not be brought under control. To address this situation, a reactive-power compensator utilizes a reactive-power control apparatus that includes a comparison voltage generator for generating, for a control target voltage and to mitigate voltage fluctuation, a comparison voltage restricted within predetermined limits and obeying a predetermined time-lag characteristic. A differential voltage generator generates a differential voltage that is the difference between the comparison voltage and the control target voltage. A reactive-power control device controls, in response to the differential voltage, control-target reactive power generated by an SVC, at a time-related characteristic faster than the time-lag characteristic for the comparison voltage.
摘要翻译：在使用静态无功功率补偿器（SVC）的常规无功功率补偿器中，在许多情况下，SVC在其产生等于其容量的大部分的无功功率的状态下工作。当在该状态下发生不可预见的大电压波动时，SVC不能充分产生减轻电压波动所需的无功功率量。在某些情况下，这种电压波动不能受到控制。为了解决这种情况，无功功率补偿器利用无功功率控制装置，该无功功率控制装置包括比较电压发生器，用于产生用于控制目标电压并减轻电压波动的限制在预定限度内的比较电压并且遵循预定的时间 - 滞后特征。差分电压发生器产生作为比较电压和控制目标电压之差的差分电压。无功功率控制装置响应于差分电压控制由SVC产生的控制目标无功功率，该时间相关特性比比较电压的时滞特性快。

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