Intelligent high-voltage reactive power automatic adjustment and compensation device

Abstract

The invention relates to an intelligent high-voltage automatic capacity adjusting reactive compensation device. The intelligent high-voltage automatic capacity adjusting reactive compensation device comprises a comprehensive automatic device, a capacity selective switch controller, a capacity selective switch and a fling-cut switch, wherein the comprehensive automatic device is used for measuring the reactive loads of a main transformer and a capacitor bank, working out the reactive load of the device, analyzing whether the current operation state of the reactive compensation device is reasonable according to the reactive load provided by the capacitor bank, and determining whether the reactive compensation capacity is switched to another capacity, when capacitors need to be switched to another capacity, the comprehensive automatic device is used for transmitting opening signals to the fling-cut switch, when the comprehensive automatic device detects that no electric current exist in the capacitor bank, the comprehensive automatic device is used for transmitting signals to the capacity selective switch controller, the capacity selective switch controller is used for starting the capacity selective switch and adjusting tap positions, and after the tap positions are adjusted, the comprehensive automatic device is used for transmitting switching signals to the fling-cut switch. The intelligent high-voltage automatic capacity adjusting reactive compensation device has the advantages that the grouping number and the grouping capacity of the capacitors are reasonably set according to the number of taps of an on-load tap-switch, and further, the accuracy of reactive compensation is increased.

Description

technical field [0001] The invention relates to a reactive power compensation device in a power supply system. Background technique [0002] The reactive power compensation device is an important electrical equipment in the power supply system. It is of great significance to improve the power factor of the power supply system, reduce system loss, and ensure power quality. In particular, the dynamic reactive power compensation device can automatically increase or decrease the reactive power compensation capacity according to the load size and power factor to meet the reactive power demand of the system, thereby ensuring the economical operation of the system. [0003] The principle wiring of the traditional reactive power compensation device is as follows: figure 1 Shown: When the load is heavy, the compensation capacitor bank is put into operation, and when the load is lightened, the capacitor bank is cut off to exit the reactive power compensation. [0004] Due to the rel...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this traditional reactive power compensation method is: the switching capacity of the compensation capacitor bank is relatively large, and it can basically meet the requirements of reactive power compensation when it is put into use during peak load. The group cannot be put into operation, the whole group devotes less time

When the compensation capacitor bank is removed, the system power factor is low and the power loss is large, which is not conducive to energy saving and emission reduction

Images