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Hybrid dynamic reactive compensation apparatus and method

A hybrid and dynamic technology, applied in the direction of reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve the problems of SVG capacity waste and compensation speed that cannot take advantage of SVG

Inactive Publication Date: 2015-12-23
ANHUI USEM TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] If SVG and TSC are simply connected to the system without changing its control strategy, it will only cause a waste of part of the capacity of SVG, and the advantages of SVG will not be fully utilized in terms of compensation speed

Method used

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  • Hybrid dynamic reactive compensation apparatus and method

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Embodiment Construction

[0032] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0033] The invention provides a device for hybrid dynamic reactive power compensation, which includes: a transformer, a reactive power compensation controller, a thyristor switching capacitor and a static var generator, and the transformer is used for Acquisition of voltage analog signals and current analog signals of low-voltage systems;

[0034] The reactive power compensation controller is configured to be connected to the transformer to receive the voltage analog signal and the current analog signal, and calculate the capacity value of the thyristor switching capacitor and the capacity value of the static var generator. ;

[0035] The reactive power compen...

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Abstract

The invention discloses a hybrid dynamic reactive compensation apparatus and method. The method comprises a mutual inductor, a reactive compensation controller, a thyristor switched capacitor, and a static var generator. To be specific, the mutual inductor is used for collecting a voltage analog signal and a current analog signal of a low-voltage system. The reactive compensation controller is configured to be connected with the mutual inductor to receive the voltage analog signal and the current analog signal and calculate a capacity value of a putting part of the thyristor switched capacitor and a capacity value putted by the static var generator and is configured to be connected to the thyristor switched capacitor to send a first control signal out according to the capacity value of the putting part of the thyristor switched capacitor. The thyristor switched capacitor receives the first control signal and is configured to be connected to a low-voltage system to send a first response reactive current out. The reactive compensation controller is configured to be connected to the static var generator; and the static var generator is configured to be connected to the low-voltage system. According to the hybrid dynamic reactive compensation apparatus and method, the costs are reduced and the compensation precision is improved.

Description

technical field [0001] The invention relates to the field of reactive power compensation for power quality control, in particular to a hybrid dynamic reactive power compensation device and a hybrid dynamic reactive power compensation method realized by the device. Background technique [0002] SVG static var generator (static var generator) is a topology based on voltage source PWM rectifier. By adjusting the voltage amplitude and phase of the output side of the rectifier, it indirectly adjusts the grid side current amplitude and phase so as to continuously dynamically compensate reactive power without harmonics. A new generation of reactive power compensation device. TSC thyristor switched capacitor (Thyristor switched capacitor) is a reactive power compensation device that connects two anti-parallel thyristors and compensation capacitors in series, and compensates reactive power by switching capacitors. The response speed of SVG is much higher than that of TSC, and it has...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 束龙胜李子缘陈任峰毕孟航张红王先磊
Owner ANHUI USEM TECH CO LTD
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