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Real-time dynamic active harmonic compensation device for high voltage system

A real-time dynamic and harmonic compensation technology, which is applied in harmonic reduction devices, reactive power compensation, and AC networks to reduce harmonics/ripples, etc., can solve the problem that power active filters are difficult to expand and apply, and achieve data Exchange reliable, stable, and easy-to-implement effects

Active Publication Date: 2013-09-25
LIVESINE ELECTRIC SHANGHAI CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The key difference between high-voltage power active filters and low-voltage power active filters is how to realize the compensation current generation circuit. Due to the withstand voltage characteristics of power electronic devices, it is difficult to expand the application of power active filters in high-voltage systems.

Method used

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  • Real-time dynamic active harmonic compensation device for high voltage system
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  • Real-time dynamic active harmonic compensation device for high voltage system

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Embodiment

[0031] A real-time dynamic active harmonic compensation device for high-voltage systems. The device is connected in parallel to the high-voltage system. The device includes a main circuit, a control circuit and a high-voltage air-core reactor. The main circuit includes multiple H-bridge link inverters. The control circuit includes the main control unit and the H-bridge link inverter control unit connected in sequence, the H-bridge link inverter unit is connected with the main control unit and the H-bridge link inverter control unit respectively, and the H-bridge link inverter The transformation unit is connected to the high-voltage system through a high-voltage air-core reactor, and each H-bridge link inverter unit in the main circuit corresponds to an H-bridge link inverter control unit.

[0032] Such as Figure 1-2 As shown, the H-bridge link inverter unit includes input terminal 1, output terminal 2, IGBT inverter bridge group 3 and DC capacitor group 4, IGBT inverter bridg...

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Abstract

The invention relates to a real-time dynamic active harmonic compensation device for a high voltage system. The real-time dynamic active harmonic compensation device is connected to the high voltage system in parallel and comprises a main circuit, a control circuit and a high voltage air reactor, wherein the main circuit comprises an H bridge link inverter unit, the control circuit comprises a main control unit and an H bridge link inverter control unit which are connected in sequence, the H bridge link inverter unit is connected with the main control unit and the H bridge link inverter control unit respectively, and the H bridge link inverter unit is connected with the high voltage system through the high voltage air reactor. Compared with the prior art, the real-time dynamic active harmonic compensation device for the high voltage system has the advantages of being high in speed and accuracy, capable of compensating harmonic waves and reactive power and the like.

Description

technical field [0001] The invention relates to an active harmonic elimination device, in particular to a real-time dynamic active harmonic compensation device for high-voltage systems. Background technique [0002] Power active filter (Active Power Filter, abbreviated as APF) is an effective measure to control power system harmonics and improve power quality. Harmonics and reactive currents generated by non-linear loads will pollute the power grid, which will bring serious harm to the power grid system, power supply department and power users. The currently widely used parallel passive filter has defects such as poor filtering effect, sensitivity to power grid parameters, bulky components, and serious series-parallel resonance accidents. Compared with the traditional passive filter (PF), the power active filter has technical advantages such as being able to compensate harmonics, suppress flicker, compensate reactive power, and automatically track and compensate changing ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01H02J3/18
CPCY02E40/30Y02E40/40
Inventor 舒观澜
Owner LIVESINE ELECTRIC SHANGHAI CO LTD
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