Intelligent low-voltage reactive power compensator controller with digital signal processor as core

Abstract

The present invention discloses an intelligent low-voltage reactive power compensator controller with a digital signal processor as a core. The intelligent low-voltage reactive power compensator controller is connected with a three-phase power supply. The intelligent low-voltage reactive power compensator comprises the following components: a digital signal processor, a first air switch, a second air switch, a third air switch, a first capacitor, a second capacitor and a third capacitor. Three input ends of the digital signal processor are respectively connected with three live wires of the three-phase power supply. Three output ends of the digital signal processor are respectively connected with the control ends of three air switches. Two ends of each air switch are respectively connected with the live wire of the three-phase power supply and one end of a corresponding capacitor. The other end of each capacitor is connected with a zero line of the three-phase power supply. According to the intelligent low-voltage reactive power compensator, the digital signal processor controls the switching states of the air switches for realizing switching-on control for compensating capacitance to the low-voltage electric network. Higher accuracy and higher reliability in control are obtained. Intelligent control on reactive compensation of the low-voltage electric network can be realized, and an optimal reactive compensation effect is obtained.

Description

Technical field [0001] The invention relates to a low-voltage reactive power compensation device controller, in particular to an intelligent low-voltage reactive power compensation device controller with a digital signal processor as the core. Background technique [0002] In recent years, with the implementation and deepening of urban and rural power grid transformation, the installation of low-voltage dynamic reactive power compensation devices on 0.4kV power grids can improve power supply quality, tap the potential of power supply equipment, and reduce line losses. The low-voltage dynamic reactive power compensation device has simple structure, convenient and flexible switching, and remarkable energy-saving effect. Therefore, more than 300 enterprises across the country produce reactive power compensation devices. However, most of them are of low technical level, lack of complete testing equipment, small production volume, and difficult to guarantee quality. Especially as the...

AI Technical Summary

Problems solved by technology

However, most of them are of low technical level, lack of relatively complete testing equipment, small production volume, and difficult to guarantee quality

In particular, the controller as the key unit of the reactive power compensation device and the switch of the switching capacitor are very different.

[0003] The existing low-voltage reactive power compensation device controller uses a single-function single-chip microcomputer to control the switching state of the air switch. power compensation effect

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