Optimization configuration method of active filter

A source filter and optimized configuration technology, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples, etc., to achieve the effects of fast convergence, fast calculation speed, and reduced calculation load

Active Publication Date: 2017-05-31
QINHUANGDAO POWER SUPPLY COMPANY OF STATE GRID JIBEI ELECTRIC POWER COMPANY +2
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Problems solved by technology

[0005] The invention provides a method for optimal configuration of an active filter capable of solving the problem of a large number of harmonics generated by the integration of multiple harmonic sources into an intelligent distribution network

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0030] like figure 1 As shown, the present invention discloses a method for optimal configuration of an active filter, which includes the following steps: setting an objective function based on the influence of active filter configuration; setting constraints that meet the optimal configuration of an active filter in a smart distribution network Conditions; the configuration algorithm combining modal analysis and genetic algorithm is used to optimize the configuration of the active filter of the smart distribution network.

[0031] Wherein, the objective function may be a single objective function, such as cost, harmonic network loss or voltage distortion rate. The objective function can also be a multi-objective function based on cost, harmonic network loss and voltage total harmonic...

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Abstract

The invention provides an optimization configuration method of an active filter. The optimization configuration method comprises the following steps of setting a target function according to influence on configuration of the active filter; setting a constraint condition conforming to optimization configuration of the active filter of an intelligent power distribution network; and performing optimization configuration on the active filter of the intelligent power distribution network by a configuration algorithm combined with a mode analysis method and a genetic algorithm. According to the optimization configuration method of the active filter, provided by the invention, a candidate position node of the active filter is determined by introducing the mode analysis method, the calculation quantity of the genetic algorithm for determining a configuration position of the active filter is reduced, and the problem that the genetic algorithm is easy to fall into local optimum is solved; and moreover, the operational speed of the optimization configuration method is fast, rapid convergence of the algorithm is facilitated, a better optimal solution can be found out, the optimal access position of the active filter can be effectively calculated, and the optimization configuration method has a good effect on improving the running economy of the system and improving the electric quality.

Description

technical field [0001] The invention relates to an intelligent distribution network system, in particular to an optimal configuration method of an active filter. Background technique [0002] The wide application of power electronic devices has made the harmonic pollution of the power grid more and more serious, and the harmonic problems of the power system have attracted more and more attention. [0003] At present, in the power system, the harmonic control is mainly to reduce the harmonic content by installing filters. Among them, configuring passive filters is the main means to suppress harmonics, but it has disadvantages such as poor filtering effect and possible harmonic amplification. Active filter is a power electronic device that dynamically suppresses harmonics. It can compensate harmonics with frequency and amplitude changes, and can make up for the shortcomings of passive filters and obtain better compensation than passive filters. characteristics, it is an idea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/40
Inventor 高云辉田书娅邢劲牛益国谢小英宋莹贾清泉张孟琛王珺宣文华
Owner QINHUANGDAO POWER SUPPLY COMPANY OF STATE GRID JIBEI ELECTRIC POWER COMPANY
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