基于能量灵敏度矩阵和多阈值搜索的电压控制分区

摘要:

目前，能量函数的方法用于电压稳定评估、电网可靠性分析已获得较为深入的研究。由于节点的能量信息能 综合反映节点的无功注入以及电压水平，提出一种基于静态能量函数法和多阈值搜索进行电压控制分区的新方法。 从节点的能量信息出发，提出节点能量相关度指标用于量化节点间无功联系的紧密程度，并基于此构建系统的能量 灵敏度矩阵，最后利用多阈值分解方法对该矩阵进行电压控制区域划分。IEEE 30 节点系统、118 节点系统的仿真结 果以及和传统分区方法的比较验证了所提方法的有效性和可行性。

Abstract:

Since the energy information can synthetically reflect the reactive injection and the voltage of node bus，a new voltage control partitioning method is proposed based on static energy function and multi － threshold search． With the energy information of node，the node energy correlation degree index ( NECDI) is proposed to evaluate the reactive relevance between two nodes． Based on the NECDI，the energy sensitivity matrix ( ESM) is established． In the end，the ESM is decomposed to get the voltage control area ( VCＲ) by multi － thresholds search method． Simulation results in IEEE 30 and IEEE 118 bus systems and the comparison with the traditional partitioning method verifies the validity and practicability of the proposed method．