Comprehensive treatment device used for solving three-phase imbalance of distribution network

Abstract

The invention relates to a comprehensive treatment device used for solving three-phase imbalance of a distribution network, which comprises an SVG branch, intelligent phase-change switch branches, anelectrically operated circuit breaker and a controller, wherein the SVG branch is hooked to a 380V bus through the electrically operated circuit breaker, a plurality of intelligent phase-change switchbranches are arranged and directly connected to the 380V bus, the input is three-phase four-wire 380V, the output is single-phase 220V, the controller is connected with the SVG branch through electric signals and monitors the intelligent phase-change switch branches, and the controller adjusts the output of the intelligent phase-change switch branches and the SVG branch when the three phases of the distribution network are unbalanced. Compared with the prior art, the comprehensive treatment device in small in configured capacity of the SVG branch. The SVG branch operates at a zero-output state most of the time, and is low in loss, small heat generation and higher in reliability.

Description

technical field [0001] The invention relates to a distribution network control device, in particular to a comprehensive control device for solving the three-phase unbalance of the distribution network. Background technique [0002] With the development of the economy, the importance of electricity is becoming more and more prominent. Due to the difference in population distribution and economic strength in China, the structure of my country's distribution network is relatively complicated, and the load in some areas is too concentrated. With the increase of load density in large cities The increase in the types of electrical equipment, the scale of the distribution network is expanding, and the three-phase imbalance in the distribution network is becoming more and more serious, resulting in a decrease in the reliability of the distribution network, an increase in energy consumption, and a serious impact on safety. Production electricity. Contents of the invention [0003] T...

AI Technical Summary

Problems solved by technology

[0002] With the development of the economy, the importance of electricity is becoming more and more prominent. Due to the difference in population distribution and economic strength in China, the structure of my country's distribution network is relatively complicated, and the load in some areas is too concentrated. With the increase of load density in large cities The increase in the types of electrical equipment, the scale of the distribution network is expanding, and the three-phase imbalance in the distribution network is becoming more and more serious, resulting in a decrease in the reliability of the distribution network, an increase in energy consumption, and a serious impact on safety. Production electricity

Images