Control strategy optimization method of automatic voltage control system of wind power plant

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: 2017-05-31
LEADZONE SMART GRID TECH
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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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  • Control strategy optimization method of automatic voltage control system of wind power plant

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Embodiment Construction

[0022] Reference figure 1 The method for optimizing the control strategy of the automatic voltage control system of 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 power information of the booster station.

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

[0025] S2. When the next regulation cycle arrives, use the actual issued target and current real-time value of the fan and SVC / G in the previous round to calculate the regulation deviation of the current fan and SVC / G. The adjustment deviation is the difference between the actual issued target and the current real-time value. The calculation of the adjustment deviation provides a reference for the compensation of ...

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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 automatic voltage control of wind farms, and in particular to an optimization method for the control strategy of an automatic voltage control system of wind farms. Background technique [0002] Because wind power output has the characteristics of randomness, intermittentness and volatility, 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 installed capacity of wind power 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, new construction or connection to the grid through 110kV and above voltage levels in the grid area To expand a wind farm, it is necessary to automatically control the voltage and reactive power of the wind farm. [0003] The existing AVC su...

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Application Information

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Patent Type & Authority Applications(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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