Grid environment energy front end control system and control method

A control system and control method technology, applied in electrical components, circuit devices, emergency protection circuit devices, etc., can solve problems such as grid voltage imbalance, grid phase loss, grid voltage distortion, etc., to ensure closed-loop static-free control, The effect of ensuring power supply quality and improving response speed
CN110061641AActive Publication Date: 2019-07-26CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
Publication Date
2019-07-26

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Abstract

The invention provides a grid environment energy front end control system and a control method for controlling a DC power system that comprises a mains access terminal, a three-phase rectifying unit connected to the mains access terminal, and a DC output end. The control system comprises a grid voltage collecting unit, a grid current collecting unit and a control board, wherein the control board performs voltage conversion according to the voltage collected by the grid voltage collecting unit, performs current conversion according to the current collected by the grid current collecting unit, performs a third harmonic suppression calculation according to the above values obtained from the conversion to obtain harmonic suppression calculation output, calculates the three-phase modulation wave based on the harmonic suppression calculation output, and calculates a rectification rectifier unit control signal according to the three-phase modulation wave to control the opening and closing ofthe IGBT unit of the DC power supply system. The invention provides an energy front end control system with adaptive grid environment, which can stably adjust the output of the power grid, ensure stable output of the grid energy under normal conditions and fluctuations of the grid environment, and ensure the quality of the power supply.
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Description

technical field

[0001] The invention relates to the technical field of power grid control, in particular to a front-end control system and control method for power grid environment energy. Background technique

[0002] At present, the DC stabilized power supplies that are common in the market focus on outputting stable DC voltage, and do not have energy management between the grid and the load, especially when the grid environment changes suddenly, such as violent fluctuations in grid voltage and serious distortion of grid voltage. , Unbalanced network voltage, and lack of phase in the grid, the traditional DC stabilized voltage cannot output stable DC voltage, lacks the function of adapting to the grid environment, and may even affect the power supply quality of the grid. Contents of the invention

[0003] The purpose of the present invention is to provide a grid environment energy front-end control system and control method, which are used to control the stable output of...

Claims

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