一种适用于多直流馈入系统的限流措施优化配置方法  

Optimal configuration of current-limiting measures for multiple DC infeed system

作　　者：杨冬 周勤勇[2] 刘玉田[3] 

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250002 [2]中国电力科学研究院,北京100192 [3]山东大学电网智能化调度与控制教育部重点实验室,山东济南250061

出　　处：《电力自动化设备》2015年第6期93-98,129,共7页Electric Power Automation Equipment

基　　金：国家电网公司大电网规划与运行控制技术深化研究重大专项(SGCC-MPLG020-2012)~~

摘　　要：多回直流馈入和短路电流超标是我国受端电网面临的2个典型问题。提出一种适用于多直流馈入系统的限流措施优化配置方法。基于多馈入短路比的定义,理论推导限制短路电流措施对多馈入短路比的影响。在此基础上,提出能够反映限制短路电流成本及效果、网络联系紧密程度以及受端系统对多回直流支撑能力的目标函数。采用带精英策略的快速非支配排序遗传算法,结合支路筛选策略,寻找Parero最优的限流措施配置方案。实际系统仿真验证了所提方法的有效性和快速性。Since the multiple DC infeeds and limit-exceeding short circuit current are two typical phenomena of the receiving-end power grid in China,a method of optimal current-limiting measure configuration is proposed for the multiple DC infeed system. The impact of current-limiting measure on the multi-infeed short circuit ratio is analyzed according to its definition,based on which,the objective functions are established to reflect the cost and effect of current-limiting measure ,the tightness of network structure and the supporting capability of receiving-end system to multiple DC infeed. Combined with the branch selection strategy,the fast and non-dominated sorting generic algorithm with elitist strategy is adopted to search the optimal Pareto solution of current-limiting measure configuration. Simulation for an actual system verifies the effectiveness and speediness of the proposed method.

关 键 词：多直流馈入 短路电流 受端电网 多馈入短路比 优化 

分 类 号：TM713[电气工程—电力系统及自动化]