超导超高压同步调相机的电磁特性分析及参数计算

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关键词：超导超高压调相机；场路耦合；电磁分析；参数计算；瞬态参数DOI：10.15938/j. jhust.2025.06.010中图分类号：TM342 文献标志码：A 文章编号：1007-2683（2025）06-0088-14

Abstract：Thesuperconducting ultra-highvoltage synchronouscondenser adopts high-voltage cable winding asstator winding， whichcanbedirectlycoectedtotepowergridwitoutastep-uptransfoer，ndthespecialstructureof tsstatorwithonmgetic tethleads toitsmagneticcireuitstructurewhichisverydiferentfromthatof thetraditionalsynchronousmotor.Inthepaper，a superconductingultra-hghvoltagesychonouscondenseristakenasanexampleandthemathematicalmodelof tecondensedirectly connectedtothegridisconstructedbythemetodoffield-circuitcoupling.Atwo-dimensionalfinite-elementsimulationmodelofthe 30Mvar/35kVsuperconductingultra-highvoltagesynchronouscondenserisestablished，andbasedonthismodel，theelectromgetic characteristicsof theunloadedandgrid-connectedoperatingconditionsareanalyzed.Basedontheenergymethod，thecalculation methodofslotleakageimpedanceunderthenonmagnetictothslotstructureisgiven，andtheparametersofthedampingshieldlayer arequatedtocompletethecalculationofthesteady-stateparametersofthesuperconductingultra-higholtagesychronousodese. Consideringthelargetransienttimeconstantofsuperconductingexcitationwinding，theexpresionofthre-phaseshort-circuit fundamentalwavecuentinthetime-domainmethodissimplifiedandfitedtobtainthetransientparameter，andatthesametime， theresultsarecomparedandverifiedwiththoseoftefrequency-domainmethod，whichverifiesthevaidityofthtwocomputatioal methods，andestablishes thefoundationforthesubsequentresearchofsuperconductingultra-highvoltagesynchronouscondensers.

Keywords：superconducting ultra-high voltagecondenser;field-circuit coupling；electromagneticanalysis；parameter calculation transient parameter

0 引言

随着高压直流输电规模的不断扩大，受端电网直流换相失败、电压不稳定、送端电网薄弱、短路容量不足等问题愈显突出[1-6]，因此提高电网系统的动态无功补偿能力尤为重要。（剩余19604字）