基于动态阻抗的源–网–荷耦合特性分析方法  

An Analyzing Method of Coupling Characteristic of Source-Network-Load Based on Dynamic Impedance

作　　者：胡臻[1] 李欣然[1] 刘光晔[1] 宋军英[2] 石峻[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082 [2]湖南电力调度通信中心,湖南省长沙市410007

出　　处：《中国电机工程学报》2017年第4期1106-1113,共8页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973计划)(2012CB 215100);国家自然科学基金项目(51277056);国家电网公司科技项目(5216A013500P)~~

摘　　要：基于非线性动态系统理论,定义了电力系统节点动态阻抗矩阵及节点被动波动、节点主动波动和网络波动3个指标,进而提出了一种基于动态阻抗的源–网–荷耦合特性分析方法,可定量研究电力系统中源–网–荷各组成部分之间的动态耦合关系及其变化规律和主导影响因素。节点被动波动指标揭示了某节点或区域易受其他节点或区域影响的程度,节点主动波动指标描述了某节点或区域易对其他节点或区域产生影响的程度,两者综合反映了节点或区域与整个网络间的电气耦合联系,分别体现了自稳性和致稳性,并与整个系统的潮流分布和源–网–荷的电气耦合联系特性息息相关。通过IEEE39节点和某省电网实际系统仿真检验了该文方法的正确性和指标的有效性。In order to analyze power system the dynamic characteristics of the components of the electrical charge; the change law of dynamic coupling relation and the dominant factor, based on the theory of dynamic analysis derived impedance modulus margin index, and further proposed source-network-load dynamic analysis methods based dynamic impedance. This method can be decoupled from any source-network-load dynamic coupling between two nodes or zones, to further analyze dominant factor in the coupling on characteristics accordingly proposed passive fluctuation, initiative fluctuation and network fluctuations. Node passive fluctuation index represents a node or a level of a region vulnerable to other nodes or other areas of influence, the node initiative fluctuation index indicates the extent of the initiative of a node or a region likely to have an impact on other nodes or other areas of voltage. Both comprehensive reflection of the electrical coupling link between the node and the network, with the current distribution of the entire system and the source-network-load Electrical contact coupling characteristics closely related charge; network fluctuation indicator reflects the impact of the grid magnitude; Comprehensive indicators showing coupling characteristics of the entire network, in line with the actual power system.

关 键 词：电力系统 动态阻抗矩阵 网络特性 电气耦合 

分 类 号：TM71[电气工程—电力系统及自动化]