Link control panel of IGBT valve of chain static synchronous compensator

Abstract

The invention relates to a link control panel of an IGBT valve of a chain static synchronous compensator. An energy storage circuit input and an energy storage circuit output of a high-potential dual power supply are connected with a primary equipment high potential side and a power supply changeover circuit input respectively, a power supply changeover circuit output is connected with a power supply monitoring circuit and a voltage signal input of a DC voltage detection circuit, an output thereof is connected with a logic protection circuit which is connected with an IGBT valve detection signal, a valve body temperature detection signal, a DC voltage detection signal and a fault indication signal, a valve body locking instruction and a valve status signal thereof are connected with a pulse distribution and dead zone processing circuit and a communication processor respectively, the communication processor is connected with a DC voltage signal at a DC, a light emission and receiving circuit, and a control instruction of the communication processor is connected with the pulse distribution and dead zone processing circuit. The link control panel is used for solving of complicated energy storage technology, imperfect trigger and real-time detection of the IGBT valve, anti-interference of the link control panel and communication with surface equipment in the prior art.

Description

technical field [0001] The invention relates to a chain-type static synchronous compensator IGBT valve chain link control board, which belongs to the field of power electronics. Background technique [0002] With the implementation of my country's "West to East Power Transmission" strategy and the expansion of the scale of the interconnected grid, the problem of voltage stability is particularly prominent. The main problem of the super-large load centers formed in the Pearl River Delta and the Yangtze River Delta is that the dynamic reactive power support is increasingly insufficient. In the past two decades, large-scale power outages caused by voltage stability and voltage collapse have occurred in many parts of the world, and voltage collapse accidents have also occurred many times in my country. The use of Static Synchronous Compensator (STATCOM) is one of the most effective measures to solve these problems. It plays a very important role in solving the problems of grid ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a chain-type static synchronous compensator IGBT valve chain link control which uses a voltage transformer to obtain energy from a high potential, has perfect IGBT valve triggering and real-time detection, strong anti-interference ability, and has the function of communicating with ground equipment It is used to solve the problems existing in the existing technology such as complex energy harvesting technology, imperfect IGBT valve triggering and real-time detection, anti-interference of chain link control board and communication with ground equipment

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