电力建设2018，Vol.39Issue(2)：95-102,8.DOI:10.3969/j.issn.1000-7229.2018.02.012
基亏Simplex算法的LCC-LCC+FBMMC串联型混合直流输电系统的参数优化方法
Parameter Optimization Method Based on Simplex Algorithm for LCC-LCC+FBMMC Series Based Hybrid HVDC System
摘要
Abstract
A LCC-LCC+FBMMC series based hybrid HVDC system,for which the rectifier side adopts the line commutated converter (LCC),and the inverter side is composed by LCC in series with the full bridge sub module modular multilevel converter (FBMMC),with the technical advantages of DC fault ride-through,mitigating commutation failure,and power flexible reversal capability and so on,is a kind of hybrid dc transmission topology suitable for future long-distance high-capacity overhead transmission.Reasonable and effective selection of controller parameters is a prerequisite for ensuring good performance of the system.This paper first establishes the mathernatical model of LCC-LCC+FBMMC series based hybrid HVDC system;on this basis,proposes a controller parameter optimization method based on Simplex algorithm,and constructs an objective function based on the deviation of controller input signal to optimize the controller parameters both on the rectifier and inverter sides.Finally,an EMT model of LCC-LCC+FBMMC series based hybrid HVDC system is established in PSCAD/EMTDC,and tested under four different conditions,including active power step-change,power reversal,three-phase short-circuit fault and DC ground fault.The simulation results prove the effectiveness of the proposed optimization method,which show that the controller parameters based on the proposed optimization method can improve both the steady and transient performance of LCC-LCC+FBMMC system in different operating conditions.关键词
混合直流输电系统/电网换相换流器(LCC)/模块化多电平换流器(MMC)/Simplex算法/参数优化Key words
hybrid HVDC system/line commutated converter/modular multilevel converter/Simplex algorithm/parameter optimization分类
信息技术与安全科学引用本文复制引用
赵剑,刘炜,郭春义,陆翌,裘鹏,宣佳卓,李继红..基亏Simplex算法的LCC-LCC+FBMMC串联型混合直流输电系统的参数优化方法[J].电力建设,2018,39(2):95-102,8.基金项目
中央高校基本科研业务专项资金(2017XS17) （2017XS17）
国网浙江省电力公司科技项目(5211ZS1500GB)Project supported by Foundation Research Funds for the Central Universities (2017XS17) （5211ZS1500GB）
