Energy Based System Well-Being Analysis

Determination of adequacy in small isolated power systems (SIPS) is important from technical as well as economic point of view. In this paper, a novel energy-based system well- being analysis framework (EBSWBA) is presented, which overcomes the weaknesses of the SWBA and considers all important factors that influence system adequacy. The framework combines the advantages of SWBA and Energy-Not Served (ENS) approaches. In the paper, we use EBSWBA to assess the reliability of systems containing renewable energy sources (RES), fossil fueled sources and electricity storage. Furthermore we propose a novel technique for the calculation of EBSWBA indices, the Contingency Enumeration for Small Isolated Power Systems (CESIPS) that is derived from the Contingency Enumeration (CE) methodology. This technique also enables the formation of probability distributions of indices. The comparison of the results of classical SWBA and EBSWBA when applied to different storage operating schemes and load profiles demonstrates the superiority of EBSWBA both in terms of speed and rendered information about the system state.