基于树形拓扑结构的变电站全停转供分析

Analysis of substation full shutdown to supply based on tree topology

  • 摘要: 变电站全停转供方法存在主变负载率无法满足实际运行需要的缺陷,设计一种基于树形拓扑结构的变电站全停转供方法,以解决上述问题。提取变电站最大负荷供应量,推算出变电站的当前工作效率以及对应的负荷供应潜能,采取自馈线恢复和组合联络开关的手段,结合评价指标展开负荷转供的校核流程,改进负荷转供校核模式,利用启发式搜索算法等工具,对拓扑结构的方向和状态进行引导,基于树形拓扑结构构建全停转供分层优化模型。实验结果:文中的变电站全停转供方法,与另外三种变电站全停转供方法的主变负载率均值分别为:70.986%、60.278%、62.684%、63.030%,证明在结合树形拓扑结构的作用原理后,文中的变电站全停转供方法更能满足主变负载率70%的需求。

     

    Abstract: The substation full-stop transfer supply method suffers from the defect that the main substation load ratio cannot meet the actual operation needs. A substation full-stop transfer supply method based on tree topology is designed to solve the above problems. The maximum load supply of the substation is extracted, the current working efficiency of the substation and the corresponding load supply potential are deduced, the means of self-feeder restoration and combined contact switches are adopted, the calibration process of load transfer is developed in combination with evaluation indexes, the load transfer calibration model is improved, the direction and state of the topology is guided by using tools such as heuristic search algorithms, and a hierarchical full-stop transfer supply model is constructed based on the tree topology. The optimization model is based on a tree topology. Experimental results: The average values of the main substation load factor for the substation full stop diversion method in the paper and the other three substation full stop diversion methods are: 70.986%, 60.278%, 62.684% and 63.030% respectively, proving that the substation full stop diversion method in the paper better meets the main substation load factor of 70% when combined with the action principle of tree topology.

     

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