| 电网运行事故预案知识图谱生成算法 |
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| 引用本文：范展滔1，李志中1，陈兴望1，吴小刚1，陈章国2.电网运行事故预案知识图谱生成算法[J].计算技术与自动化,2024,(4):79-85 |
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| 中文摘要:针对电网运行事故检测和预案生成的需求，为了提供全面内容的预案知识图谱并实现简洁有效的事故处理方式，提出了基于异常特征与潮流计算模型的电网运行事故预案知识图谱智能生成算法。提取包含波动性和变动性的电网运行异常特征，经相关向量机的异常特征分析实现最佳特征组合选择后，结合卷积神经网络检测电网运行事故；检测到运行故障发生后，建立潮流计算模型，通过节点之间的电流信息计算节点功率，以此为基础，构建以重要负荷优先恢复、开关操作次数最少为目标的电网运行事故恢复模型，经粒子群算法求解获取最佳事故恢复处置预案；并建立事故预案实体库和本体模型，通过本体模型抽取实体和关系，生成电网运行事故预案的知识图谱，辅助电网运行事故决策。实验结果表明：该算法可以检测电网运行事故，且生成的电网运行事故预案知识图谱包含内容广泛，事故处理方式简捷有效。 |
| 中文关键词:异常特征 潮流计算 运行事故 知识图谱 智能生成 事故恢复 |
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| Knowledge Graph Generation Algorithm of Power Grid Operation Accident Plan |
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| Abstract:In order to meet the requirements of power grid operation accident detection and plan generation, and to provide a comprehensive plan knowledge graph and achieve simple and effective accident handling methods, an intelligent generation algorithm of power grid operation accident plan knowledge graph based on abnormal characteristics and power flow calculation model is proposed. The abnormal features of power grid operation including volatility and variability are extracted, and the optimal feature combination selection is achieved through the abnormal feature analysis of relevance vector machine, and then the power grid operation accidents are detected with convolutional neural network. After detecting the occurrence of operational faults, a power flow calculation model is established, and the node power is calculated based on the current information between nodes. Based on this, a power grid operation accident recovery model is constructed with the goal of prioritizing the recovery of important loads and minimizing the number of switch operations. The optimal accident recovery and disposal plan is obtained through particle swarm optimization algorithm solving. The entity database and ontology model of the accident plan are established, and entities and relationships are extracted through the ontology model to generate the knowledge graph of the power grid operation accident plan to assist in the decision-making of power grid operation accidents. The experimental results show that the algorithm can detect power grid operation accidents, and the generated knowledge graph of power grid operation accident plan contains extensive content, and the accident handling method is simple and effective. |
| keywords:abnormal characteristics power flow calculation operation accident knowledge graph intelligent generation accident recovery |
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