基于区域发电可靠性的指数解析模型及其应用（一）理论基础

电力系统通过互联可以实现发电容量的相互支援,提高各独立系统的可靠性水平.当前各种可靠性水平的算法在计算时间与计算精度之间难以折中.文中提出了基于区域可靠性的发电可靠性指数解析模型,考虑了本区域和互联区域的备用容量以及联络线的传输容量变化对各个区域的发电可靠性的影响,建立了基于影响分布因子矩阵的直观表达式.分别将区域可靠性水平表达成区域备用容量和联络线传输容量的指数解析式.此模型可以快速准确计算不同备用水平以及联络线传输容量时的区域发电可靠性,且考虑了区域之间的耦合关系,对简单二区域系统和TH-RTS系统的优化结果表明了模型的准确性和有效性.

Generation Reliability Exponential Analytic Model of Interconnected Areas and Its Application Part One Theoretical Methodology

Generation system reliability of a single area will be improved by the supports from other areas' generation capacity through interconnection,however the current generation reliability calculation algorithms cannot take this into account due to the computation burden.An exponential analytic model is proposed in this paper based on the generation system reliability of interconnected areas.The effects of installed capacity of each area and of transfer capability of tie lines on the generation system reliability in each single area are modelled by establishing the matrices of influence distribution indices.The generation reliability is calculated as an exponential function of regional reserve capacity and tie lines transfer capability,which can effectively consider the interaction between different areas.Test results on a simple two-area system and the TH-RTS indicate that the precision and effectiveness of the model.