The Design And Related Study Of Iron-Core Reactor Based On Genetic Algorithm

Dry type iron-core reactor is one of important equipment which can improvethe quality of power network operation and play role as the reactive powercompensation, the current limit, filter functions in the power grid. With thecontinuous development of production technology, more and more people beganto research how to save as much manufacturing cost as possible under thecondition of ensuring the safe operation of the reactor electromagneticparameters. As a modern intelligent mathematical optimization method, Geneticalgorithm are used more and more widely in engineering design field, but theoriginal genetic algorithm exists defects such as slow convergence speed, easy toearly maturity, which make it severely constrained in some practical problemsand application.This thesis set a35kV dry parallel iron-core reactor as an example, theoptimization design is in-depth studied from the electromagnetic calculationmethod, the establishment of mathematical model of optimum design andimproved genetic algorithm design, etc.Firstly, the iron-core reactor structure of magnetic field and finite elementmethod thoughts are briefly introduced,the simulation of typical iron-core air qap.The original formula that solve air gap expand equivalent width of iron-core wasamendended and the goal that calculate iron-core reactor inductance valuemore accurate was reached.Secondly, the initial potential distribution and gradient distribution of thewinding can be given through calculation and simulation analysis on the transientprocess of the winding. Then it checks the vertical insulation of reactor windingwhether meets the requirements of safe operation by calculating the impulsevoltage falls on the maximum gradient point.Thirdly, the improved calculation method of electromagnetic design of dry type iron-core parallel reactor is provided, then it designs and calculatesaccording to the actual dry type iron-core parallel reactor. At the same time, thedry iron-core parallel reactor electromagnetic calculation software is compiledbased on Visual Basic.Finally, the defects of the original genetic algorithm is studied and analyzed,and it proposes the corresponding improving measures. Then it uses theimproved genetic algorithm to optimize the typical example. Through thecontrast between the original scheme and the optimization scheme, it canconcluded that the optimization scheme can effectively reduce the reactormanufacturing cost in the case of meeting electromagnetic properties. It suggeststhat the improved genetic algorithm is applicable to the optimization design ofthe dry iron-core parallel reactor.