基于安全域的输电系统概率安全评估系统框架

Framework of Security Region Based Probabilistic Security Assessment for Power Transmission System

针对输电系统概率安全评估问题,提出了一种基于安全域的输电系统概率安全分析系统的模型.介绍了该模型的构成、实用动态安全域和割集电压稳定域在概率安全评估中的应用,以及概率安全评估的计算步骤.该系统应用最新的安全域的研究成果,在能量管理系统数据的基础上,通过对安全域、随机潮流的计算,实现了输电系统在线概率安全评估.给出的动态和静态不安全概率指标,可用于指导运行人员进行预防性控制决策.

A model of security region based probabilistic security assessment system of power transmission system was presented. The configuration of this model was introduced. Practical dynamic security region （PDSR） and voltage stability region in cut-set spaces （CVSR） were applied to calculate dynamic and static insecurity probability. The steps of probabilistie security assessment were given specially. Then the framework of system software and the functions of each subprogram were introduced. An on-line probabilistie security assessment was realized by calculating security region and stochastic load flow based on energy management system （EMS）, which gives the indices of dynamic and static insecurity probability to guide operators in predictive control decision-making.