电网振荡中心断面的识别方法

By generating a power network diagram and eliminating generator-end nodes, the oscillation center section of the power grid is identified using admittance array feature analysis. This solves the problem of oscillation center identification in multi-machine systems and improves power grid stability and control accuracy.

CN115618178BActive Publication Date: 2026-07-17EAST CHINA BRANCH OF STATE GRID CORP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA BRANCH OF STATE GRID CORP
Filing Date
2022-09-07
Publication Date
2026-07-17

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Abstract

本发明提供了一种电网振荡中心断面的识别方法,包括:分别标记电力系统中发电机内电势节点的索引集合、发电机端节点的索引集合和负荷节点的索引集合,通过上述集合形成电力网络的边集合和邻接矩阵,通过发电机内电势节点的索引集合、发电机端节点的索引集合、负荷节点的索引集合、边集合和邻接矩阵形成电力网络图;消去发电机端节点的索引集合,以形成第一增广图,并形成网络推广矩阵;将负荷节点的注入电流置0,消去负荷节点和发电机端节点,得到第二增广图;形成第二增广图的导纳阵,对导纳阵开展特征分析,通过特征向量和网络推广矩阵的乘积向量获得电网振荡中心断面的割集。本发明可以在多机复杂的供电场景下识别出电网振荡中心断面。
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