A control strategy optimization method for automatic voltage control system of wind farm

An automatic voltage and control system technology, applied in wind power generation, AC network voltage adjustment, electrical components, etc., can solve the problems of low qualification rate of voltage adjustment, no consideration, etc., to solve the problem of unsatisfactory control effect, narrow the gap, and avoid limitations sexual effect

Active Publication Date: 2019-08-30
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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  • A control strategy optimization method for automatic voltage control system of wind farm

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Embodiment Construction

[0022] refer to figure 1 , a method for optimizing a control strategy of an automatic voltage control system for a wind farm proposed by the present invention includes the following steps.

[0023] S1. Obtain real-time data and operating status information of all wind turbines and SVC / G in the wind farm, and obtain real-time electrical quantity information of the booster station.

[0024] In this step, the various real-time data and information obtained lay the foundation for the status analysis of the wind farm, which is beneficial to the real-time grasp of the wind farm.

[0025] S2. When the next adjustment cycle arrives, calculate the adjustment deviation of the current fan and SVC / G by using the actual issued target of the last round of adjustment of the fan and SVC / G and the current real-time value. The adjustment deviation is the difference between the actual issued target and the current real-time value, and the calculation of the adjustment deviation provides a refer...

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Abstract

The invention discloses a control strategy optimization method of an automatic voltage control system of a wind power plant. A draught fan with a relatively large regulation error is selectively shielded according to a regulation error average value, so that a draught fan with relatively large dynamic deviation or a draught fan with a fault can be temporally shielded, unfavorable influence on voltage regulation of the wind power plant due to regulation errors of a few draught fans is solved, and the difference between an output of a passive power source output and a control target is reduced; and by compensation on regulation deviation of the draught fans and a static var compensator / generator (SVC / G) control target, the difference between the output of the passive power source of the wind power plant with steady-state deviation and the control target is gradually reduced, and the problem of non-ideal control effect caused by a control error of the draught fan and the SVC / G is solved. By the control strategy optimization method, the voltage regulation qualification ratio of the wind power plant is effectively improved, and the safety running level of a voltage of a grid-connected point is effectively improved.

Description

technical field [0001] The invention relates to the technical field of wind farm automatic voltage control, in particular to an optimization method for a control strategy of a wind farm automatic voltage control system. 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 To expand the wind farm, it is necessary to automatically control the voltage and reactive power of the wind farm. [0003] The existing AVC substation of the wind ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/16H02J3/38
CPCH02J3/16H02J3/386Y02E10/76Y02E40/30
Inventor 王统义殷骏程琦
Owner LEADZONE SMART GRID TECH
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