基于自适应加权预测-校正内点法的含VSC-HVDC电力系统最优潮流  

Optimal power flow of power system with VSC-HVDC based on AWPC-IPM

作　　者：孙国强[1] 任宾[1] 卫志农[1] 季聪[2] 李群[3] 刘建坤[3] 

机构地区：[1]河海大学可再生能源发电技术教育部工程研究中心,江苏南京210098 [2]江苏方天电力技术有限公司,江苏南京211102 [3]江苏省电力科学研究院,江苏南京210036

出　　处：《电力自动化设备》2015年第3期54-59,67,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51277052;51107032;61104045)~~

摘　　要：加权预测-校正内点法(WPC-IPM)求解含电压源型高压直流输电(VSC-HVDC)的电力系统最优潮流时,迭代中后期校正环节加权会减慢收敛速度。提出一种自适应加权预测-校正内点法(AWPC-IPM),该方法以对偶间隙的变化趋势作为加权与否的判据,对偶间隙增大时加权,以抑制校正方向错误导致的收敛性变差,对偶间隙减小时不加权,以加快收敛。算例仿真结果表明,所提方法既有效抑制了校正方向错误对预测-校正内点法(PC-IPM)的影响,又加快了迭代后期的收敛速度。When WPC-IPM（Weighted Predictor-Corrector Interior Point Method） is applied to solve the optimal power flow of power system with VSC-HVDC ,the weighted correction component during the mid-late stage of iteration will slow down its convergence rate. An AWPC-IPM（Adaptive WPC-IPM） is proposed,which takes the variation tendency of duality gap as a criterion：when it increases,the weighted correction component is adopted to restrain the convergency deterioration due to wrong correction direction;when it decreases,the unweighted correction component is adopted to accelerate the convergency. Results of case simulation show that,the proposed method can effectively restrain the impact of wrong correction direction on PC-IPM （Predictor-Corrector Interior Point Method） and accelerate the convergence rate during later stage of iteration.

关 键 词：电力系统 最优潮流 电压源换流器 高压直流输电 VSC-HVDC 交直流系统 自适应加权预测-校正内点法 

分 类 号：TM744[电气工程—电力系统及自动化]