基于SSPFM-MPC的MMC-HVDC直流故障穿越研究
|
摘要
模块化多电平变流器(MMC)具有大规模、少谐波、低开关损耗等特性,其运用在高压直流输电(HVDC)领域非常普遍。针对传统半桥子模块(HBSM)不具备直流侧故障穿越的能力,全桥子模块(FBSM)和箝位双子模块(CDSM)所用开关器件成倍增加的问题,在分析HBSM拓扑基础上,提出一种开关器件少且具有直流故障穿越能力的子模块(SM)拓扑,并给出能够快速随动的希尔排序质因子算法-模型预测控制(SSPFM-MPC)策略。在PSCAD/EMTDC平台上搭建401电平实验模型,对所提SM拓扑性能测试检验,并搭建了21电平实际物理模型进行故障穿越,实验表明所提改进型SM具有良好的直流故障穿越能力。
Based on modular multilevel converter(MMC) less harmonic,low switching losses and other characteristics of the use of high-voltage direct current(HVDC) transmission in the field is very common.Aiming at the problem that the traditional half bridge sub-module(HBSM) does not have the ability of direct current side fault ride-through,the switching device used in the full bridge sub-module(FBSM) and clamped double sub-module(CDSM) is multiplied.On the basis of analyzing the HBSM topology,a sub-module(SM) topology with few switching devices and DC fault ridethrough capability is proposed, and Shell sort probability function method model predictive control(SSPFM-MPC) strategy with fast follow-up is given.The 401 level simulation model is built under PSCAD/EMTDC,and the topology performance test of the proposed SM is tested,a 21-level actual physical model is built for fault ride-through.The results show that the SM has good DC fault ride-through ability.
Based on modular multilevel converter(MMC) less harmonic,low switching losses and other characteristics of the use of high-voltage direct current(HVDC) transmission in the field is very common.Aiming at the problem that the traditional half bridge sub-module(HBSM) does not have the ability of direct current side fault ride-through,the switching device used in the full bridge sub-module(FBSM) and clamped double sub-module(CDSM) is multiplied.On the basis of analyzing the HBSM topology,a sub-module(SM) topology with few switching devices and DC fault ridethrough capability is proposed, and Shell sort probability function method model predictive control(SSPFM-MPC) strategy with fast follow-up is given.The 401 level simulation model is built under PSCAD/EMTDC,and the topology performance test of the proposed SM is tested,a 21-level actual physical model is built for fault ride-through.The results show that the SM has good DC fault ride-through ability.
引文
[1]李少华,王秀丽,李泰,等.混合式MMC及其直流故障穿越策略优化[J].中国电机工程学报,2016,36(7):1849-1858.
[2]丁云芝,苏建徽,周建.基于钳位双子模块的MMC故障清除和重启能力分析[J].电力系统自动化,2014,38(1):97-102.
[3]郝瑞祥,杨晓峰,薛尧,等.一种具有直流故障限流能力的模块化多电平换流器[J].电工技术学报,2017,32(6):172-180.
[4]刘普,王跃,雷万钧,等.优化模型预测控制与级联控制策略下MMC运行特性对比[J].电网技术,2015,39(2):393-399.
[5]付华,曹庆春.基于SSPFM电容均压的MMC-HVDC系统模型预测控制策略[J].高电压技术,2017,43(4):1112-1120.
[2]丁云芝,苏建徽,周建.基于钳位双子模块的MMC故障清除和重启能力分析[J].电力系统自动化,2014,38(1):97-102.
[3]郝瑞祥,杨晓峰,薛尧,等.一种具有直流故障限流能力的模块化多电平换流器[J].电工技术学报,2017,32(6):172-180.
[4]刘普,王跃,雷万钧,等.优化模型预测控制与级联控制策略下MMC运行特性对比[J].电网技术,2015,39(2):393-399.
[5]付华,曹庆春.基于SSPFM电容均压的MMC-HVDC系统模型预测控制策略[J].高电压技术,2017,43(4):1112-1120.