Reactive power automatic compensation device for distribution lines

Abstract

A reactive power automatic compensation device for distribution lines relates to the field of electrical technology. The reactive power automatic compensation device comprises a controller and a first capacitor bank which are connected in parallel between a power side and a load side. The first capacitor bank is connected in parallel with a second capacitor bank, a third capacitor bank, a first voltage limiting protector group and a second voltage limiting protector group. A fuse group is arranged between the first capacitor bank, the power side and the load side. The second voltage limiting protector group is connected with a voltage transformer. The controller is used for acquiring voltage of a line and current and voltage of capacitors, has the functions of reverse reactive power compensation and full-line reactive power balancing, and enables the compensation device to provide reactive power both for load at the rear end of a compensation point and other distribution transformers at the front end of the compensation point. Through reasonable capacitor grouping and correct compensation point selecting, the purpose of power factor improving is achieved, and the reactive power loss of lines is minimized.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a reactive power automatic compensation device for distribution lines. Background technique [0002] my country's current urban and rural 10kV distribution network system has problems such as large power supply radius, large seasonal load changes, large line reactive power loss, low power factor, and reactive power cannot be balanced locally, which seriously affects the economic operation and quality of the power grid. The voltage is stable. Solving these problems will achieve obvious practical effects in terms of energy saving and loss reduction, improvement of power supply quality of distribution network and economic benefits of power supply enterprises. [0003] Although there are many reactive power compensation products, products that can track changes in line power factor, reactive power, and voltage in real time, automatically compensate line reactive power, and optimi...

AI Technical Summary

Problems solved by technology

[0003] Although there are many reactive power compensation products, products that can track changes in line power factor, reactive power, and voltage in real time, automatically compensate line reactive power, and optimize line reactive power configuration have yet to be further developed.

Images