Comprehensive controller applied to SVG /TSC (Static Var Generator)/ (Twin Subcarrier) and control method thereof

Abstract

The invention creates the field of power electronics control, and particularly relates to a comprehensive controller applied to an SVG / TSC (Static Var Generator) / (Twin Subcarrier) and a control method thereof. The controller comprises a control mainboard, a communication plate, an analog board, an analog expansion board and a signal acquisition board, wherein the communication plate, the analog board, the analog expansion board and the signal acquisition board are connected with the control mainboard through an FPGA (Field Programmable Gate Array) data bus, and the communication plate is further connected with an IGBT (Insulated Gate Bipolar Translator) driving plate and the analog plate and the analog expansion board are further connected with a thyristor driving plate; the signal acquisition plate comprises a current transformer and a voltage transformer. According to the comprehensive controller, the uniform control of the SVG and the TSC can be realized, therefore, the idle current compensation rate and the target power factor can be greatly promoted under the condition that the two equipments are blended; furthermore, the safety and life of a thyristor in the TSC equipment can be greatly promoted; the life of a capacitor can be balanced, the maintenance period of the equipment can be prolonged, and the using cost can be reduced.

Description

technical field [0001] The invention relates to the field of power electronic control, and particularly points out an integrated controller and control method applied to SVG / TSC. Background technique [0002] At present, TSC is generally used as reactive power compensation equipment in low-voltage power distribution systems. As SVG composed of power electronic The principle of SVG equipment is different, and the response time is different. The output compensation of the two equipment cannot be coordinated, and malfunctions often occur, resulting in frequent switching of TSC thyristors and burning due to overheating. In addition, since SVG and TSC use independent controllers with different control algorithms, the compensation capacity has not been allocated, resulting in poor overall reactive power compensation effect and frequent fluctuations in system voltage. Contents of the invention [0003] The purpose of the present invention is to propose a controller and its contr...

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Problems solved by technology

[0002] At present, TSC is generally used as reactive power compensation equipment in low-voltage power distribution systems. As SVG composed of power electronic The principle of the SVG equipment is different, the response time is different, the output compensation of the two equipment cannot be coordinated, and there are often malfunctions, resulting in frequent switching of the TSC thyristor and burning due to overheating

In addition, since SVG and TSC use their own independent controllers, the control algorithms are different, and the compensation capacity is not allocated, which leads to the deterioration of the overall reactive power compensation effect and frequent fluctuations in the system voltage.

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