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Synchronous generator excitation system based on fuzzy PID control and voltage regulation method

A technology of synchronous generator and excitation system, which is applied in the direction of controlling the generator, the control system, and controlling the generator through the change of the magnetic field, and can solve the problems such as generator excitation current/voltage overshoot

Inactive Publication Date: 2019-12-13
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0004] This application provides a synchronous generator excitation system and voltage regulation method based on fuzzy PID control, which is used to solve the problem that the existing synchronous generator excitation system adopts traditional PID regulation control, and there is a technology of generator excitation current / voltage overshoot question

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  • Synchronous generator excitation system based on fuzzy PID control and voltage regulation method
  • Synchronous generator excitation system based on fuzzy PID control and voltage regulation method
  • Synchronous generator excitation system based on fuzzy PID control and voltage regulation method

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Embodiment Construction

[0065] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0066] For ease of understanding, see figure 2 , the present application provides an embodiment of a synchronous generator excitation system based on fuzzy PID control, including:

[0067] The voltage sampling calculation module 101 is used to sample the machine terminal voltage of the synchronous generator, and calculate the total machine terminal voltage of the...

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Abstract

The invention discloses a synchronous generator excitation system based on fuzzy PID control and a voltage regulation method. The method comprises the following steps: calculating the total generator-end voltage of a synchronous generator according to a sampled generator-end voltage; calculating a voltage deviation and a voltage deviation differential according to a reference voltage and the totalgenerator-end voltage, determining fuzzy control parameters according to the voltage deviation and the voltage deviation differential, and carrying out PID regulation of a voltage loop on a regulating point according to the fuzzy control parameters and the reference voltage, and obtaining a reference value of the excitation voltage, wherein the fuzzy control parameters comprise a proportional parameter P, an integral parameter I and a differential parameter D; regulating a current loop according to the detected excitation voltage of the generator and the given reference value of the excitation voltage, and outputting an adjusted excitation voltage; carrying out PWM waveform modulation on the adjusted excitation voltage to obtain a PWM wave signal; and outputting the PWM wave signal to a driving circuit to drive an IGBT to be switched on. The technical problem of generator excitation current / voltage overshoot due to the adoption of traditional PID regulation control in an existing synchronous generator excitation system is solved.

Description

technical field [0001] The present application relates to the technical field of synchronous motors, in particular to a fuzzy PID control-based synchronous generator excitation system and a voltage regulation method. Background technique [0002] With the development of the power system, the country's requirements for electric energy have increased, and the excitation system also needs higher requirements to adapt to the development of the social economy, but the stability of the power system is easily affected, so the synchronous generator needs to pass the excitation according to the operating status of the power system. The system adjusts its own working state to realize over-excitation and under-excitation operation of the motor to stabilize the operation of the power system. [0003] Investing in a power system stabilization device can reduce the impact of low-frequency oscillations on the power system when the power system fluctuates, thereby ensuring the stable operat...

Claims

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Application Information

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IPC IPC(8): H02P9/30H02P21/00
CPCH02P9/305H02P21/0003
Inventor 张淼李博然陈栩杰
Owner GUANGDONG UNIV OF TECH
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