新型低压无功补偿器的设计

A New Design of Low Voltage Reactive Power Compensation Controller

主要介绍了基于ATT7022B和ST-SRC或ST-SRCS-4智能开关的新型无功补偿统。该控制器通过高精度多功能三相电能专用计量芯片ATT7022B实时检测电网的电压、电流、功率因数、无功电流和无功功率,并有CAN总线通信接口。ST-SRC或ST-SRCS-4智能开关可在电压或电流过零点时动作,并可以通过CAN总线接口与和无功补偿控制器进行通信,最终使电容器组按一定的规律进行投切,最终实现无功补偿。

The Paper describes a new design of low voltage reactive power compensation controller based on the ATT7022B and the smart switch of ST-SRC or ST-SRCS-4. This controller with CAN interface can offer the real-time results of the voltage, current, power factor and so on. The smart switch of the ST-SRC or ST-SRCS-4 can work when the instantaneous of the voltage or the current is zero and can exchange information with the controller via the CAN bus interface in order to make the series of capacitances work according to the set low.