Regulation method of excitation voltage in marine power system

Abstract

The invention discloses a marine electric power system exciting voltage regulation method. The marine electric power system exciting voltage regulation method includes steps: firstly, respectively building mathematic models for a speed regulating system, an excitation voltage regulating system, an electric generator and loads of a marine electric power system; then, using traditional PID to regulate a prime motor speed regulating system model, dividing work status of the excitation voltage regulating model into two types according to the number of the loads of the marine electric power system; and building two excitation voltage regulating models and feedback element models; finally, enabling each excitation voltage regulating model to correspond to a fuzzy PID controller. When input running work status changes, voltage is regulated by selecting one fuzzy PID controller as a controller according to load switching signals.

Description

technical field [0001] The invention relates to the technical field of excitation voltage adjustment of electric power systems, in particular to a multi-model fuzzy PID control-based excitation voltage adjustment method for ship power systems. Background technique [0002] The ship power system is an independent system, and its generator sets have strong coupling, time variation and nonlinearity. However, since the load changes dynamically, this will affect the stability of the output voltage and frequency of the power supply, thereby affecting the safe and stable operation of the ship. Therefore, improving the control accuracy and ensuring the stable and continuous power supply of the ship's power system to the ship is an important prerequisite for ensuring the safe navigation of the ship and the safety of the crew. [0003] At present, the control of the speed regulating device and the excitation voltage regulating device generally adopts the traditional PID control metho...

AI Technical Summary

Problems solved by technology

However, with the increase of the capacity of the ship power station, the sudden addition and unloading of its load will have a greater impact on the system, and it may also be accompanied by load shedding, system structure reconfiguration, etc.

Pure artificial intelligence control may have adjustment parameters that are not applicable to the reconstructed system, and it is difficult to achieve high precision, fast response and other performance indicators

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