| 引用本文: | 莫静山,范凯民,胡显文,等.考虑暂态电压安全性与网络拓扑特征的无功电压分区方法[J].电力系统保护与控制,2026,54(03):35-45.[点击复制] |
| MO Jingshan,FAN Kaimin,HU Xianwen,et al.A reactive power-voltage zoning method considering transient voltage security and network topology characteristics[J].Power System Protection and Control,2026,54(03):35-45[点击复制] |
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| 摘要: |
| 针对交直流混联系统暂态电压安全与控制问题，提出一种融合暂态电压安全性与网络拓扑特征的无功电压分区方法。首先，定义了反映故障期间电压恢复能力和时间裕度的暂态电压安全性指标以及表征系统拓扑的短路阻抗，并据此分别构建了暂态电压特征距离与短路阻抗距离。然后，基于上述两种距离，分别形成了两套初始分区方案。同时，筛选出两套方案中均被分到同一区域的节点群，形成独立区域(共识区域)，而未能达成共识的节点则各自形成独立区域，从而形成了一套融合双重特征的初始分区方案。其次，采用改进层次聚类法，以区域间暂态电压特征距离最小为准则，在分区原则约束下逐步聚合初始分区中的高相似区域。最后，通过最大化模块度指标自适应确定最优分区结构。在改进的IEEE39节点系统中验证了所提方法的有效性。 |
| 关键词: 无功电压分区 暂态电压 短路阻抗 层次聚类 模块度指标 |
| DOI：10.19783/j.cnki.pspc.250612 |
| 投稿时间：2025-06-09修订日期：2025-11-21 |
| 基金项目:国家自然科学基金项目资助(52307084) |
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| A reactive power-voltage zoning method considering transient voltage security and network topology characteristics |
| MO Jingshan1,FAN Kaimin1,HU Xianwen2,SONG Na1,YAN Guangxian3,DONG Qingyu1 |
| (1. Key Laboratory of Modern Power System Simulation and Control and Renewable Energy Technology, Ministry of Education,
Northeast Electric Power University, Jilin 132012, China; 2. State Grid Huangshi Power Supply Company, Huangshi 435000, China;
3. Suzhou Yongqiao District Power Supply Company, State Grid Anhui Electric Power Co., Ltd., Suzhou 234100, China) |
| Abstract: |
| To address transient voltage stability and control issues in AC/DC hybrid power systems, a reactive power-voltage zoning method that integrates transient voltage security and network topological characteristics is proposed. First, transient voltage security indices reflecting voltage recovery capability and time margin during faults are defined, along with short-circuit impedance to characterize system topology. Based on these, a transient voltage characteristic distance and a short-circuit impedance distance are constructed, respectively. Then, two initial zoning schemes are formed according to the two distance measures. Nodes that are assigned to the same zone in both schemes are selected to form independent zones (consensus zones), while nodes that fail to reach consensus form independent zones, thereby yielding an initial zoning scheme that combines both features. Next, an improved hierarchical clustering method is applied to progressively merge highly similar zones in the initial scheme, using the minimum inter-zone transient voltage characteristic distance as the criterion under zoning principle constraints. Finally, the optimal zoning structure is adaptively determined by maximizing the modularity index. The effectiveness of the proposed method is validated through simulations on a modified IEEE 39-bus system. |
| Key words: reactive power-voltage zoning transient voltage short-circuit impedance hierarchical clustering modularity index |
