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Phase modulation operation capability test method and system for wind turbine generators

A technology for wind turbines and phase modulation operation, which is applied in wind power generation, single-network parallel feed arrangement, etc., and can solve the problems of insufficient reactive power regulation capacity of the station, lack of coordination of wind power investors, and joint adjustment of reactive power compensation devices, etc. problem, to achieve the effect of promoting wind farm reactive power regulation capability, high test efficiency, and high test accuracy

Active Publication Date: 2016-02-17
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

[0004] At present, due to the lack of coordination of wind power investors, grid operators have not yet coordinated the wind farm technology platform. After the wind farm is completed and put into operation, reactive power operation has become a big blind spot, and reactive power compensation devices in wind turbines and wind farms cannot be realized. Co-regulated nonfunctional capacity
When relevant testing units participate in the technical transformation of grid-connected wind farms, there is no standard test method for the reactive power adjustment capability of the station

Method used

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  • Phase modulation operation capability test method and system for wind turbine generators
  • Phase modulation operation capability test method and system for wind turbine generators
  • Phase modulation operation capability test method and system for wind turbine generators

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Embodiment Construction

[0031] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0032] A method for testing the phase modulation operation capability of wind turbines, comprising:

[0033] Steps to adjust the grid-connected voltage of the wind turbine to 100% of the rated voltage;

[0034] By arranging measurement points at the grid-connected point of the wind farm and the outlet side of the wind turbine converter, and collecting the voltage and current of all wind turbines in the wind farm through the test terminal, the steps to obtain the reactive voltage of the grid-connected point of the wind farm are as follows:

[0035] ,

[0036] In the formula: is the reactive voltage variation, is the variation of reactive power, is the short-...

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Abstract

The invention relates to a phase modulation operation capability test method and system for wind turbine generators. The phase modulation operation capability for wind turbine generators includes a leading phase operation capability and a lagging phase operation capability. The test method can generate voltage disturbance by switching a dynamic reactive power compensator installed in a field station so as to test the response time and the response amplitude of each wind turbine generator with the phase modulation operation capability to voltage disturbance. The test system includes a voltage / current acquisition terminal and a data recording and analysis system based on Labview. The system can test the phase modulation operation situation of a plurality of wind turbine generators at the same time, and compares the motion time sequence and the motion amplitude for phase modulation operation for each wind turbine generator, and then automatically generates a test report. The phase modulation operation capability test method and system for wind turbine generators has the advantages of being high in test efficiency and being high in test accuracy, and can greatly promote popularization of phase modulation operation for wind turbine generators and improve the reactive adjusting capability of a wind power station.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method and system for testing the phase modulation operation capability of a wind turbine. Background technique [0002] The national standard "Technical Regulations for Connecting Wind Farms to Power Systems" (GB / T19963-2011) clearly stipulates that the reactive power supply of wind farms includes wind turbines and reactive power compensation devices of wind farms. Wind farms should make full use of the reactive capacity of wind turbines and their Adjustment ability; when the reactive power capacity of the wind turbine cannot meet the needs of system voltage regulation, a reactive power compensation device with an appropriate capacity should be installed in the wind farm, and a dynamic reactive power compensation device should be installed if necessary. Based on this standard, all wind farms are equipped with dynamic reactive power compensation devices. In actual operation...

Claims

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Application Information

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IPC IPC(8): H02J3/50
CPCY02E10/76
Inventor 拜润卿陈仕彬智勇梁福波李养俊
Owner STATE GRID CORP OF CHINA
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