Magnetically-controlled static var compensator

Abstract

The invention discloses a magnetically-controlled static var compensator, which mainly solves the defects that in the prior art, the existing reactive compensation is stepped and low in accuracy, and cannot provide inductive reactive power or capacitive reactive power synchronously; the switching operation is frequent; the higher requirements of the electrical power system and users cannot be met. The magnetically-controlled static var compensator comprises a digital signal processor, a power supply, a capacitor bank or a filter bank, a keyboard, a liquid crystal displayer, a programmable logic controller, a reactive compensation unit, CSR (Controllable Shunt Reactors), and an AD (Analog-to-Digital) sampling circuit, wherein the output ends of the power supply, the capacitor bank or the filter bank and the keyboard are all connected with the digital signal processor; the input ends of the liquid crystal displayer, the programmable logic controller and the reactive compensator are all connected with the digital signal processor; the controllable shunt reactors are connected with the reactive compensation unit and the programmable logic controller; the input end of the AD sampling circuit is connected with the controllable shunt reactors, while the output end is connected with the digital signal processor. By virtue of the scheme, the magnetically-controlled static var compensator can reach the target of high cost performance and meet the actual demand, and is of high practical value and promotion value.

Description

technical field [0001] The invention relates to a compensation device, in particular to a magnetically controlled static var compensation device. Background technique [0002] The interconnection and long-distance and large-capacity power transmission of power systems have become an important trend in the development of the power industry. There are more and more AC transmission channels or AC-DC parallel transmission channels for long-distance centralized power transmission across regions. The dynamic reactive power support capability of the power grid under large accident disturbances has not only become an important constraint on the power transmission capacity of the interconnected grid, but also can affect the interconnection of power grids. The voltage stability level and voltage safety margin of the system. How to improve the safety and stability of the power grid, enhance the transmission capacity of the existing power grid, and maximize the use of transmission lin...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a magnetically controlled static var compensation device, which mainly solves the shortcomings in the prior art that the reactive power compensation is stepped, the precision is low, the inductive and capacitive var cannot be provided at the same time, and the switching action is frequent. Can not meet the higher requirements of the power system and users

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