A Search Method for Key Transmission Sections in Power Grid Based on Cut Set Section Tree
The key transmission cross-section are key monitoring links in the operation and scheduling of large power grids.Effective search algorithms are needed in operation mode analysis to identify key transmission sections,so that dispatchers can grasp and predict potential thermal stability risks in the system in advance.To this end,a key section search method for power grids based on cut set section trees was proposed,which can achieve fast and accurate key section search.Firstly,the bridge structure was searched for in the graph model to simplify the graph model;secondly,based on the sensitivity of line interruptions and the consistency of power flow direction,a relationship matrix of section composition was constructed,and the definition and construction method of cut set section tree were proposed;finally,combined with heavy overload identification,a key section search for power grid thermal stability with cut set properties was achieved.The test results on the IEEE 39 node system show that the proposed method can quickly and accurately obtain key sections of the power grid,which is more comprehensive than the cross-sectional results obtained by existing methods.
key transmission sectioncut set searchpower flow direction consistencyoutage load flowcut section tree
万方数据
维普
