摘要
模块化多电平换流器MMC(modular multilevel converter)每个桥臂上的级联子模块数量众多,系统仿真规模庞大,给实时仿真带来了巨大挑战。针对基于现场可编程门阵列FPGA(field-programmable gate array)的MMC实时仿真,首先提出了一种对桥臂采用戴维南等效外加电压补偿策略的MMC高效建模方法。进一步对所建立的MMC高效仿真模型提出了流水线技术与并行计算技术深度融合的硬件设计方法,有效提升了MMC的实时仿真效率。在基于FPGA的MMC实时仿真平台上对25电平双端MMC-HVDC系统进行了测试。结果表明,实时仿真器与PSCAD/EMTDC的仿真结果基本一致,验证了本文所提模型的正确性和硬件设计的仿真精度。
There are numerous cascaded submodules on each bridge arm of a modular multilevel converter(MMC),and the corresponding simulation scale is huge,which brings a severe challenge for the real-time(RT)simulation of MMC.To realize the RT simulation of MMC based on field programmable gate array(FPGA),an efficient modelling method for MMC is proposed at first,in which a compensation strategy of Thévenin’s equivalent external voltage is applied on the bridge arm.Furthermore,a hardware design method is put forward for the simulation model by combining the pipeline technique and parallel computation,thus effectively improving the RT simulation efficiency of MMC.A twoterminal 25-level MMC-HVDC system is tested on an MMC RT simulation platform based on FPGA.It is found that the simulation results of the RT simulator and those of the PSCAD/EMTDC are basically consistent,which verifies the correctness of the proposed model and the simulation accuracy of the hardware design.
作者
翟鹤峰
黄冠标
赵利刚
洪潮
ZHAI Hefeng;HUANG Guanbiao;ZHAO Ligang;HONG Chao(State Key Laboratory of HVDC(Electric Power Research Institute,China Southern Power Grid Company Limited),Guangzhou 510663,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2021年第1期29-35,共7页
Proceedings of the CSU-EPSA
基金
中国南方电网有限责任公司科技资助项目(ZBKJXM20180041)。
关键词
模块化多电平换流器
现场可编程门阵列
实时仿真
戴维南等效模型
modular multilevel converter(MMC)
field programmable gate array(FPGA)
real-time simulation
Thévenin’s equivalent model
