| 引用本文: | 杨 冬,周勤勇,刘玉田.基于灵敏度分析的限流方案优化决策方法[J].电力自动化设备,2015,35(5): |
| YANG Dong,ZHOU Qinyong,LIU Yutian.Short circuit current limiting strategy optimization based on sensitivity analysis[J].Electric Power Automation Equipment,2015,35(5): |
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| 摘要: |
| 考虑限制短路电流与提高系统稳定性的相互制约关系，提出一种基于灵敏度分析的限流方案优化决策方法。通过分析各种限流措施对阻抗矩阵元素的影响，推导各种限流措施与超标站点自阻抗的灵敏度关系，提出一种考虑限流措施灵敏度的支路筛选策略。以总投资成本最小和短路容量裕度最小为目标，应用自适应混合粒子群优化算法寻找限流方案集。基于层次分析法建立综合评价模型，应用模糊综合评价算法对限流方案集进行系统性定量决策。实际系统仿真结果表明该方法能够快速获得优化决策方案。 |
| 关键词: 限流 短路电流 灵敏度分析 粒子群优化算法 层次分析法 模糊综合评价 |
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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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| Short circuit current limiting strategy optimization based on sensitivity analysis |
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YANG Dong1, ZHOU Qinyong2, LIU Yutian3
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1.State Grid Shandong Electric Power Research Institute，Ji’nan 250003，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: |
| With the consideration of mutual restriction between short circuit current limiting and system stability improvement，a method of short circuit current limiting strategy optimization based on sensitivity analysis is proposed. The influence of current limiting measure on the impedance matrix element is analyzed and the sensitivity relationship between the current limiting measure and the self-impedance of node with over-current is derived，based on which，a branch selection strategy considering the sensitivity of current limiting measure is proposed. With the minimum total investment cost and the minimum short circuit capacity margin as the objectives，the adaptive hybrid particle swarm optimization algorithm is adopted to obtain the current limiting strategy set. A comprehensive evaluation model is established based on the analytic hierarchy process and the fuzzy comprehensive evaluation algorithm is applied to realize the systematic and quantitative decision-making for the current limiting set. The simulative results of a practical system show that the optimal current limiting strategy can be quickly obtained. |
| Key words: short circuit current limiting short circuit currents sensitivity analysis particle swarm optimization algorithm analytic hierarchy process fuzzy comprehensive evaluation |
