公开(公告)号：US20070014132A1

公开(公告)日：2007-01-18

申请号：US11258557

申请日：2005-10-25

申请人： Zhaoan Wang ,  Yue Wang ,  Jun Yang ,  Xiao Zhang ,  Wanjun Lei ,  Weibin Si ,  Xiaohua Tang ,  Qiang Dong

发明人： Zhaoan Wang ,  Yue Wang ,  Jun Yang ,  Xiao Zhang ,  Wanjun Lei ,  Weibin Si ,  Xiaohua Tang ,  Qiang Dong

IPC分类号： H02M5/45

CPC分类号： H02J3/01 ,  H02J3/1864 ,  Y02E40/12 ,  Y02E40/22

摘要： This invention disclosed is a comprehensive power quality controller for substation in the electric power system and includes a Thyristor Controlled Reactor (TCR), pure tuned passive filter Zf, additional inductor L active power filter (APF), and a coupling transformer. The Thyristor Controlled Reactor (TCR) provides inductive reactive power and controls the active power filter (APF) as the current source, it is connected with the additional inductor La in parallel via the coupling transformer, then connected to the passive filter Zf in serial to consist a hybrid power filter system, which is connected to the power grid via the circuit breaker or thyristor. The comprehensive filter system provides required capacitive reactive power and filters the harmonic produced by the load and TCR system itself. Because the capacity of the active power filter (APF) is very small which is less than 1% of the harmonic source capacity, so it is a solution with low cost but simple and reliable control mode. It can suppress influence on the passive filter by the “background harmonic” of the substation and prevent the resonance occurred between the passive filter and power grid impedance.

摘要翻译： 本发明公开了一种用于电力系统中变电站的综合功率质量控制器，包括晶闸管控制电抗器（TCR），纯调谐无源滤波器Z附加电感器L有功功率滤波器（APF） 和耦合变压器。 晶闸管控制反应器（TCR）提供感应无功功率并控制有源电力滤波器（APF）作为电流源，它通过耦合变压器并联连接到附加电感器L＆amp; 以串联方式连接到无源滤波器Z N以构成混合电力滤波器系统，该系统通过断路器或晶闸管连接到电网。 综合滤波系统提供所需的电容无功功率，并对由负载和TCR系统本身产生的谐波进行滤波。 由于有源电力滤波器（APF）的容量非常小，小于谐波源容量的1％，因此是一种低成本但简单可靠的控制方式的解决方案。 可以通过变电站的“背景谐波”来抑制无源滤波器的影响，防止无源滤波器与电网阻抗之间发生谐振。

公开(公告)号：US07352597B2

公开(公告)日：2008-04-01

申请号：US11258557

申请日：2005-10-25

申请人： Zhaoan Wang ,  Yue Wang ,  Jun Yang ,  Xiao Zhang ,  Wanjun Lei ,  Weibin Si ,  Xiaohua Tang ,  Qiang Dong

发明人： Zhaoan Wang ,  Yue Wang ,  Jun Yang ,  Xiao Zhang ,  Wanjun Lei ,  Weibin Si ,  Xiaohua Tang ,  Qiang Dong

IPC分类号： H02J3/00

CPC分类号： H02J3/01 ,  H02J3/1864 ,  Y02E40/12 ,  Y02E40/22

摘要： This invention disclosed is a comprehensive power quality controller for substation in the electric power system and includes a Thyristor Controlled Reactor (TCR), pure tuned passive filter Zf, additional inductor L active power filter (APF), and a coupling transformer. The Thyristor Controlled Reactor (TCR) provides inductive reactive power and controls the active power filter (APF) as the current source, it is connected with the additional inductor La in parallel via the coupling transformer, then connected to the passive filter Zf in serial to consist a hybrid power filter system, which is connected to the power grid via the circuit breaker or thyristor. The comprehensive filter system provides required capacitive reactive power and filters the harmonic produced by the load and TCR system itself. Because the capacity of the active power filter (APF) is very small which is less than 1% of the harmonic source capacity, so it is a solution with low cost but simple and reliable control mode. It can suppress influence on the passive filter by the “background harmonic” of the substation and prevent the resonance occurred between the passive filter and power grid impedance.

摘要翻译： 本发明公开了一种用于电力系统中变电站的综合功率质量控制器，包括晶闸管控制电抗器（TCR），纯调谐无源滤波器Z附加电感器L有功功率滤波器（APF） 和耦合变压器。 晶闸管控制电抗器（TCR）提供感应无功功率并控制有源电力滤波器（APF）作为电流源，它通过耦合变压器并联连接到附加电感器L＆amp; 以串联方式连接到无源滤波器Z N以构成混合电力滤波器系统，该系统通过断路器或晶闸管连接到电网。 综合滤波系统提供所需的电容无功功率，并对由负载和TCR系统本身产生的谐波进行滤波。 由于有源电力滤波器（APF）的容量非常小，小于谐波源容量的1％，因此是一种低成本但简单可靠的控制方式的解决方案。 可以通过变电站的“背景谐波”来抑制无源滤波器的影响，防止无源滤波器与电网阻抗之间发生谐振。