第51卷第4期电力系统保护与控制Vol.51No.42023年2月16日PowerSystemProtectionandControlFeb.16,2023DOI:10.19783/j.cnki.pspc.221061基于FPGA-CPU的双馈风电系统异步协同仿真杨光绕1，郝正航1，陈卓1，陈湘萍1，张裕2，何朴想1(1.贵州大学电气工程学院，贵州贵阳550025；2.贵州电网有限责任公司电网规划研究中心，贵州贵阳550002)摘要：为实现双馈风电系统的并网及暂态实时仿真，研究了一种基于现场可编程门阵列(fieldprogrammablegatearray,FPGA)与CPU协同仿真的多速率并行实时仿真方法。使用开关函数法对双馈风电系统中“背靠背”换流器建模并进行资源优化，基于PWM均值化原理完成不同步长系统之间的模型分割。利用FPGA运行速率高的优点，以200ns的步长实现了“背靠背”换流器的小步长仿真。面向有源配电网实时仿真的需求，实现了FPGA与自主研发的实时仿真机(universalreal-timeexperimentalplatform,UREP)的200ns/50μs并行协同仿真。通过与Simulink离线仿真结果对比，同时分析模型优化前后的FPGA资源消耗情况，验证了协同仿真的实时性与准确性，可为各类风电系统的并网及暂态研究提供技术参考。关键词：现场可编程门阵列(FPGA)；双馈风电系统；实时仿真；多速率仿真；异步协同Asynchronousco-simulationofadouble-fedwindpowersystembasedonFPGA-CPUYANGGuangrao1,HAOZhenghang1,CHENZhuo1,CHENXiangping1,ZHANGYu2,HEPuxiang1(1.CollegeofElectricalEngineering,GuizhouUniversity,Guiyang550025,China;2.PowerGridPlanningandResearchCenterofGuizhouPowerGridCo.,Ltd.,Guiyang550002,China)Abstract:Torealizethegrid-connectedandtransientreal-timesimulationofdoubly-fedwindpowersystems,amulti-rateparallelreal-timesimulationmethodbasedonafieldprogrammablegatearray(FPGA)andCPUco-simulationisstudied.Theswitchfunctionmethodisusedtomodelandoptimizetheresourcesoftheback-to-backconvertersinthedoubly-fedwindpowersystem,andthemodelpartitioningbetweensystemswithdifferentsteplengthsiscarriedoutbasedonthePWMhomogenizationprinciple.UsingtheadvantageofthehighrunningrateoftheFPGA,asmall-stepsimulationofthe"back-to-back"converterisrealizedwith200nsstepsize.Tomeetthedemandsofreal-timesimulationofanactivepowerdistributionnetwork,the200ns/50μsparallelco-simulationoftheFPGAandaself-developeduniv...
