基于bs结构的高压变电站电磁场分析系统的研究word格式论文.docx

Whentheissueoftheelectricfieldinthesubstationgeneratedby incoming-outgoingtransmissionlinesofhigh-voltageistalked,transmissionlineis concerned assemi-infinite wirerelativeto thesubstation which is fixed at one endand theotherendisinfinite.Wecannotdirectlyusetheexistingfrequencyelectricfield and magneticfield calculation methods ofthree-phasefiniteand infinitewireto calculateits’.ThispapercombinessimulationchargemethodandGeneticalgorithm anddevelopsanewwaytocalculatetheelectricfieldandmagneticfieldinthe substationofthethree-phasesemi-infinitewire,namely“SimulationCharge-Genetic Algorithm(CS-GA)method”.InCS-GAmethod,theeffectivecalculatinglengthis determinedbygeneticalgorithmmethod’soptimization,whichinotherwords, half-infinitelengthwireissubstitutedforlimitedlengthwireincalculatingthe electricfieldintensityinsideofthesubstation.Thesimulationresultsindicatedthat CS-GAmethodisarelativelyaccurate,efficientandreasonablewayoncalculating thepowerfrequencyelectric field insideofthesubstation.Inthispaper,asimplifiedmathematicalmodelforasubstationlocalareais established,whichsimplifiesthelinearconductorinthisareaasfiniteconductor, parabolicconductorandsemi-infiniteconductor.Simulationchargemethodand Biot-SavartLawis used to calculatethefrequencyelectricfield and magnetic field.KEYWORDS：High voltagesubstation, Electromagnetic field, Simulation charge, Genetic algorithm目录第一章绪论....................................................................................................................................11.1 课题的研究意义...............................................................................................................11.1.1高压电网是我国电力行业发展的必然选择.........................................................11.1.2电磁环境问题是制约高压电网发展的重要问题.................................................21.2 国内外研究现状...............................................................................................................31.3 本文所做工作.................................................................