| 引用本文: | 杨 冬,周勤勇,刘玉田.一种适用于多直流馈入系统的限流措施优化配置方法[J].电力自动化设备,2015,35(6): |
| YANG Dong,ZHOU Qinyong,LIU Yutian.Optimal configuration of current-limiting measures for multiple DC infeed system[J].Electric Power Automation Equipment,2015,35(6): |
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| 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。 |
| 关键词: 多直流馈入 短路电流 受端电网 多馈入短路比 优化 |
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| 基金项目: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） |
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| Optimal configuration of current-limiting measures for multiple DC infeed system |
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YANG Dong1, ZHOU Qinyong2, LIU Yutian3
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1.State Grid Shandong Electric Power Research Institute，Ji’nan 250002，China;2.China Electric Power Research Institute，Beijing 100192，China;3.Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education，Shandong University，Ji’nan 250061，China
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| Abstract: |
| 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. |
| Key words: multiple DC infeed short circuit currents receiving-end power grid multi-infeed short circuit ratio optimization |
