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Offline optimization/online switching reactive compensation method

An off-line optimization and compensation method technology, applied in control/regulation systems, instruments, adaptive control, etc., can solve the problems of self-adjustment of PI controllers and the inability to achieve optimal control performance, so as to improve implementation efficiency, improve feasibility and performance. The effect of stability

Inactive Publication Date: 2017-07-14
HUBEI UNIV OF TECH
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Problems solved by technology

The reason is that the main problem is that in the control process of the PI controller, each parameter cannot be adjusted according to the system state, so its control performance cannot be optimal.

Method used

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  • Offline optimization/online switching reactive compensation method
  • Offline optimization/online switching reactive compensation method
  • Offline optimization/online switching reactive compensation method

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Embodiment Construction

[0027] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in this application.

[0028] The technical scheme adopted in the present invention is a static var compensation control method in which controller parameters are optimized based on a chaotic PSO algorithm, and controllers are switched according to load conditions during the control process. The main idea is to send the difference between the measured value of the line voltage at the SVC installation point and the set value of the system reference voltage to the controller, and then obtain the admittance B required by the system through the limiting link. ref , B ref The tr...

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Abstract

The invention discloses an offline optimization / online switching reactive compensation method, and belongs to the technical field of electric power system electric energy quality control. The reactive compensation method is a static reactive compensation control method that a control strategy combining a chaotic PSO algorithm and a PI controller is adopted based on the conventional PI controller to perform offline optimization and adjustment on the parameters of the PI controller, and selection of different control strategies is performed in SVC system control by aiming at different load state. According to the reactive compensation method, the response speed and the compensation effect of a dynamic reactive compensation device can be enhanced so that the online implementation efficiency of the SVC system and the feasibility and the stability of the system can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of power system power quality control, in particular to a static var compensation method for off-line optimization / on-line switching. Background technique [0002] In recent years, with the development of static var compensator (Static Var Compensator, SVC) application technology, its control technology has gradually become the focus of the industry. Many scholars have also proposed many SVC control methods: pq algorithm based on instantaneous reactive power theory and dq synchronous rotating coordinate transformation method, traditional proportional-integral PI control method, SVC control based on PID parameter self-tuning based on BP neural network, based on direct Feedback linearization (Direct FeedbackLinearization, DFL) control. The pq algorithm based on the instantaneous reactive power theory and the dq synchronous rotating coordinate transformation method use the phase-separated control of the firing...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 赵熙临吴胧胧明航何晶晶汤倩
Owner HUBEI UNIV OF TECH
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