Reliability Analysis of Virtual Power Plants for Peak-Regulation Service Using Phased Mission System Framework

This paper proposes a reliability analysis method of virtual power plants (VPPs) for peak-regulation service by adopting the phased mission system (PMS) framework. Firstly, the PMS framework of VPP for peak regulation service is established by modeling it as a multi-phased mission, decomposed into several tasks including receiving, assigning, and executing the peakregulation instructions. Besides, the single-phased binary decision diagram (BDD) model is proposed to evaluate the VPPs performance of single-phased mission with the consideration of prime and auxiliary approaches for different tasks. Moreover, the whole-phased BDD model is proposed to analyze the VPPs reliability for peak-regulation service by integrating the singlephased BDD model. Next, two reliability indices of VPP towards peak-regulation services are novelly proposed to represent the success rate and the insufficiency of peak-regulation service. Finally, the effectiveness of the proposed method is validated through extensive numerical tests on a verified IEEE test system.