Semi-physical Simulation On Load Sudden Change Of Intercooled Cycle Gas Turbine Power Generation Module

With the development of marine power technology, ship integrated power system as therepresentative of the advanced ship propulsion technology increasingly becoming the preferreddirection of development of the countries in the world marine power technology,which has theadvantages of its high efficiency, light weight, small vibration. The power generation module asthe most basic source of energy for the entire ship integrated electric propulsion system is in animportant position. The control technology for power generation module is one of the mostimportant technologies in the integrated electric propulsion system. From the current applicationsituation and development trend, the gas turbine with own many advantages has become theideal choice for power generation module original motivation. Comparing to the simple cyclegas turbine, intercooled circle gas turbine with the intercooler, which can reduce temperature ofthe air in the high pressure compressor, reduce the compression power of consumption of thehigh pressure compressor, and improve the ratio of the gas turbine power significantly. Sointercooled circle gas turbine is also one of the options for high-power gas turbine powergeneration modules.This paper is based on the technical parameters of one certain intercooled cycle gas turbinepower generation module, using modular modeling method to establish a mathematical modelfor the main components of the gas turbine. With the Matlab/Simulink simulation platform, tobuild the simulation module for the intercooled cycle gas turbine power generation module.Reference to the gas turbine working characteristics, I completed the hardware configuration onthe semi-physical simulation platform built from the ADI semi-physical simulation machine andthe TRICONEX PLC control cabinet; according to the performance requirements of gas turbinepower generation unit, completed the software development about the control strategies andcontrol algorithms; finally researched and verified them on the semi-physical simulationplatform. The research focused on positional PID, the incremental PID and fuzzy incrementalPID the three control algorithm, when load of gas turbine power generation module suddenlychanged, such as20%reduction,40%reduction,60%reduction,100%reduction and the load ofsudden increasing50%these five different load change case. The test data with collation,comparison and analysis was used to find out the best of control algorithm and optimized controlparameters. Semi-physical simulation results showed that, when set the appropriate control parameters,positional PID, the incremental PID and fuzzy incremental PID these three controllers can meetperformance requirements of control system for the gas turbine power generation module. Buttransient speed ratio and power grid frequency fluctuation from the grid stability, incrementalPID and fuzzy incremental PID are more optimized than positional PID. Especially in the case ofload severe change, such as load of40%reduction,60%reduction,100%reduction and the load ofsudden increasing50%, fuzzy incremental PID controller was much better.The results of the paper can be referenced by subsequent research and used by real machineproving.