基于风险的低压减载地点选择方法  

Determination of the Location for Undervoltage Load Shedding Based on Risk

作　　者：张志文[1] 胡非[2] 谢洪涛[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]黄石供电公司,黄石435000

出　　处：《电力系统及其自动化学报》2012年第5期127-131,共5页Proceedings of the CSU-EPSA

摘　　要：低压减载是解决电压稳定问题的一种较轻经济的方法之一,低压减载地点的选择是低压减载整定的一项重要内容,选择合适的地点有助于提高系统的电压稳定性。文中分析了PSASP的电压分析模块的数学原理,利用模态分析得到参与因子。结合风险评估的方法,将参与因子计入后果的计算中,通过对风险值的排序来确定低压减载地点。以IEEE39节点系统为例,具体阐述了低压减载地点选择方法的应用,证明了该方法的正确性和有效性。Under-voltage load shedding（UVLS）is one of the lowest cost solutions to solve voltage stability problems. Site selection is an important content for UVLS scheme,and choosing suitable sites can improve voltage stability of power system. In this paper,mathematical principles of voltage stability analysis PSASP（power system analysis software package）is analyzed through getting participation factors by modal analysis. Combined with risk assessment in the process of calculating impact, participation factors wound be taken into account. Site selection for UVLS is determined by risk ranking. Taking IEEE 39-bus system for example, the application of site selection for UVLS is expounded. The simulation results show that it＇s correct and effective.

关 键 词：低压减载 模态分析 参与因子 风险评估 

分 类 号：TM712[电气工程—电力系统及自动化]