一种电能质量综合治理装置

Device for controlling power quality comprehensively

Abstract

The utility model relates to a device for controlling power quality comprehensively. The device comprises a parallel capacitor group, an active power filter, an interface board, a DSP core board, a driver board, and a control device, wherein, the parallel capacitor group is connected in parallel to a power network; the interface board, the DSP core board, the driver board and the control device are connected in sequence; the control device is formed by connecting the DSP core board with an input/output module through a human-computer interface module; the interface board is connected with a power side current sensor and a load side current sensor in the power network respectively; the input/output module is connected with the contactor in the parallel capacitor group, so as to control themake and the break of the contactor; and the driver board sends magnified driving impulse signals to an IGBT electric energy transducer, so as to control the make and the break of the contactor. The utility model solves the problem in the prior art that when the parallel capacitor group is connected in parallel with the active power filter, equivalent harmonic impedance of a load can be changed, and current coupling is caused, as well as the problem that when the parallel capacitor group and the active power filter are controlled independently, harmonic short circuit, resonance fault or the like can be caused.
本实用新型涉及一种电能质量综合治理装置。它包括并联在电网上的并联电容器组,以及有源电力滤波器,还包括由依次相连的接口板、DSP核心板、驱动板、以及所述DSP核心板通过人机界面模块与输入/输出模块相连组成的控制装置;所述接口板与所述电网中的源侧电流传感器和负载侧电流传感器分别相连:所述输入/输出模块与所述并联电容器组中的接触器相连,控制所述接触器的通断;所述驱动板将放大后的驱动脉冲信号送入IGBT电能变换器以控制IGBT电能变换器的通断。本实用新型解决了现有并联电容器组和有源电力滤波器并联后会改变负荷的等效谐波阻抗且存在电流耦合的问题,以及二者独立控制,可能引起的谐波短路或者谐振故障等问题。

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Cited By (9)

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