Reactive voltage control method for improving voltage qualified rate of wind power plant

A technology of voltage reactive power control and voltage control method, which is applied in reactive power compensation, AC network voltage adjustment, single-network parallel feeding arrangement, etc. level, improve the pass rate, ensure the effect of safety and stability

Active Publication Date: 2015-02-04
LEADZONE SMART GRID TECH
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AI Technical Summary

Problems solved by technology

Due to the lack of consideration of the dynamic stability and adjustment accuracy of the wind farm's dynamically adjustable reactive power fans, static var compensators (Static Var Compensators, SVC) and static var generators (Static Var Generators, SVG), resulting in At present, the actual voltage regulation qualification rate of AVC substations in wind farms is generally low

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  • Reactive voltage control method for improving voltage qualified rate of wind power plant

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Embodiment Construction

[0020] refer to figure 1 , a reactive power and voltage control method for improving the qualified rate of wind farm voltage proposed by the present invention, in the process of automatic control of wind farm voltage and reactive power, by dynamically tracking the target control results, the voltage and reactive power control of wind turbines and reactive power compensation devices The goal is to perform error compensation processing, which solves the problem of unsatisfactory control effect caused by the control error of the fan and reactive power compensation device itself.

[0021] This method specifically comprises the following steps:

[0022] S1. Obtain real-time data and operating status information of fans and reactive power compensation devices in the wind farm, as well as real-time electrical quantity information of the booster station. The electrical quantity information includes bus voltage on the high and low voltage sides of the booster station, active power and ...

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Abstract

The invention discloses a reactive voltage control method for improving voltage qualified rate of a wind power plant. The reactive voltage control method for improving the voltage qualified rate of the wind power plant includes steps that S1, acquiring the real-time data and running state information of a fan and a reactive compensation device in the wind power plant and the real-time electrical quantity information of a booster station; S2, calculating the reactive voltage sensitivity of the fan end in the wind power plant, the reactive voltage sensitivity of a reactive compensation device grid-connected point and the reactive voltage sensitivity of a booster station grid-connected point of the wind power plant; S3, calculating the control error of the fan and the reactive compensation device according to an executed reactive voltage control target and the corresponding actual reactive value; S4, analyzing and calculating the reactive voltage control targets of the fan and the reactive compensation device; S5, compensating the reactive voltage control targets; S6, obtaining safety control targets; S7; outputting the safety control targets to control units of the fan and reactive compensation device to control targets; S8, returning to the step S3. The reactive voltage control method for improving the voltage qualified rate of the wind power plant is good for improving the voltage regulation qualified rate of an automatic voltage control system of the wind power plant.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a reactive voltage control method for improving the voltage pass rate of a wind farm. Background technique [0002] Due to the characteristics of randomness, intermittence and volatility of wind power output, large-scale wind power grid integration will have certain adverse effects on the safe and stable operation of the power grid. With the rapid growth of wind power installed capacity and the gradual increase in the proportion of wind power connected to the grid, in order to ensure the acceptance of wind power by the grid and promote the coordinated development of wind power and the grid, newly built or connected to the grid through 110kV and above voltage lines in the grid area The expansion of wind farms requires automatic control of voltage and reactive power of the wind farms. The purpose is to improve the voltage qualification rate of the entire network and reduce netwo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16
CPCH02J3/16H02J3/50Y02E40/30
Inventor 谢芝东殷骏程琦
Owner LEADZONE SMART GRID TECH
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