| 引用本文: | 王增平,姚玉海,张首魁,郭昆亚.基于k最短路径算法的负荷停电风险在线评估[J].电力自动化设备,2016,36(1): |
| WANG Zengping,YAO Yuhai,ZHANG Shoukui,GUO Kunya.Online outage risk assessment based on k-th shortest path algorithm[J].Electric Power Automation Equipment,2016,36(1): |
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| 摘要: |
| 传统负荷评估方法结果的准确性取决于故障假设的规模，并且相应负荷转供的计算量大，难以满足在线评估的快速性要求。针对传统方法的问题，首先对在线停电风险评估的相关概念进行详细阐述和定义。在此基础上，提出一种改进的k最短路径算法求取不含环路的所有负荷供电路径，再进行安全校验，进一步得出负荷的可行供电路径用以计算负荷停电概率和停电风险值。算例表明，所提方法准确、全面和高效，可以有效反映负荷的停电风险。 |
| 关键词: 配电 负荷 停电概率 停电 风险评估 k最短路径算法 |
| DOI： |
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| 基金项目:国家电网公司科技项目（KJ［2013］896） |
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| Online outage risk assessment based on k-th shortest path algorithm |
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WANG Zengping1, YAO Yuhai1, ZHANG Shoukui1, GUO Kunya2
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1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources，
North China Electric Power University，Beijing 102206，China;2.Industrial Automation of Shenyang Power Supply Company of State Grid Liaoning Electric Power Supply Co.，Ltd.，Shenyang 110811，China
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| Abstract: |
| The accuracy of traditional load assessment method depends on the scale of fault assumption and the computation amount for the corresponding load transfer is too large to meet the speed of online assessment，aiming at which，the concepts relative to online outage risk assessment are defined and explained in detail and an improved k-th shortest path algorithm is proposed to obtain all the power-supply paths without loop. It carries out the security verification to further obtain the available power-supply paths for calculating the power outage probability and power outage risk. Case study shows the proposed algorithm can assess the power outage risk accurately，comprehensively and effectively. |
| Key words: electric power distribution electric loads outage probability outages risk assessment k-th shortest path algorithm |
