静态电压稳定域局部边界的快速搜索新方法  

A Novel Algorithm to Explore Static Voltage Stability Region Boundary in Power Systems

作　　者：姜涛[1] 张明宇 李雪[1] 陈厚合[1] 李国庆[1] JIANG Tao;ZHANG Mingyu;LI Xue;CHEN Houhe;LI Guoqing(Department of Electrical Engineering,Northeast Electric Power University,Jilin 135012,Jilin Province,China)

机构地区：[1]东北电力大学电气工程学院

出　　处：《中国电机工程学报》2018年第14期4126-4137,共12页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51607033,51607034);国家重点研发计划项目(2016YFB0900903)~~

摘　　要：可再生能源的波动性、随机性和需求响应的不确定性对电力系统的静态电压稳定评估带来全新挑战,静态电压稳定域（static voltage stability region,SVSR）是分析和评估含随机性和不确定性因素影响的电力系统电压稳定性的重要工具。传统基于连续潮流的SVSR构建方法虽可保证构建精度,但计算效率较低。为提升高精度SVSR的构建效率,提出一种快速搜索SVSR边界的新方法。该方法基于SVSR边界的拓扑特性,根据SVSR边界上相邻临界点之间的关联关系,构造SVSR边界快速搜索的通用数学模型。针对该模型,首先采用连续潮流确定初始SVSR边界点,然后采用预测–校正方法求解所提模型,实现SVSR边界上所有边界点的快速搜索,进而构建出SVSR边界。最后,通过WSCC 3机9节点系统和IEEE-300节点系统对所提方法的正确性和有效性进行校验,结果表明,所提方法可实现高精度SVSR边界的快速搜索。Intermittent renewable energy and demand response cause the power direction changing all the time, which is a major challenge for static voltage stability assessment in power system using continuation power flow（CPF）. Static voltage stability region（SVSR） is a powerful tool to assess the voltage stability in power system with high penetration of renewable energy and demand response. The CPF can explore the highly accurate SVSR boundary but aggravates the computational burden. To improve the computational efficiency of the SVSR with higher computational precision, a novel algorithm to explore the SVSR boundary was proposed in this paper. According to the topology of the SVSR boundary, a general model to explore the SVSR boundary was developed by using the relationship between two adjacent critical points in the boundary. The model only calling CPF one time to get an initial critical point, and then predictor-corrector algorithm was employed to track other critical points to form the SVSR boundary. The WECC-9 test system and IEEE-300 test system were further used to evaluate the performance of the proposed method, the results validate that the proposed method can improve the computational efficiency of exploring SVSR boundary with higher accurate compared with CPF.

关 键 词：电压稳定 连续潮流 静态电压稳定域 预测–校正 

分 类 号：TM743[电气工程—电力系统及自动化]