Parallel active power filter direct current side control method based on chicken swarm algorithm

Abstract

The invention discloses a parallel active power filter direct current side control method based on a chicken swarm algorithm, which relates to the technical field of electric power and comprises the following steps of: S1, acquiring and processing control data; s2, designing an objective function of a chicken swarm optimization algorithm and a fitness value calculation method; and S3, solving PI controller parameters Kp and Ki of a direct-current side voltage control link of the parallel active filter according to the optimal result obtained in the step S2 and in combination with the SAPF control parameters in the step S1. According to the invention, the chicken swarm algorithm is introduced to carry out parameter setting on the PI controller of the direct-current side voltage of the parallel active power filter. The chicken swarm algorithm is a novel bionic algorithm, fully inherits the characteristics of swarm intelligence optimization, and innovatively adopts individual classification and collaborative optimization, so that the optimal solution is mined to the greatest extent, and the premature phenomenon can be well avoided. The control method has the characteristics of fast convergence and strong optimization capability. A better control parameter of the parallel active filter is easy to find. Meanwhile, the control method has great significance in effectively treating harmonic waves and improving electric energy quality.

Description

Technical field [0001] The present invention relates to the field of electricity technology, and more particularly to a straight-side control method based on a chicken group algorithm. Background technique [0002] The concept of micro-grid, mg is officially proposed in the early 21st century, as a new development direction of grids in the past ten years, and its research is still in progress. [0003] At present, many electric energy quality problems in micro grids are waiting and resolved. Since the nonlinear load input of the microgrid is more frequent, harmonic problems in the micro-network are more common. Harmonics will affect the normal operation of the power equipment, increase loss, and reduce equipment life. There may even happen to resonate, resulting in an abnormal indication of the meter, so that the relay protection device makes some error actions. During the operation of the grid, many harmonics are injected in which many harmonics are injected, and more than a cer...

AI Technical Summary

Problems solved by technology

This unstable change of voltage increase or decrease will affect the reasonable compensation current output by SAPF, resulting in unsatisfactory final harmonic compensation results.

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