Impact of Virtual Power Plants on Power System Short-Term Transient Response

This paper studies the impact of coordinated and non-coordinated frequency control of Virtual Power Plants (VPPs) on power system transients. A realistic modelling of the communication system within the VPP is also taken into account. The case study considers a modified version of the WSCC 9-bus test system with inclusions of a VPP with distributed generations and, discusses the performance of the coordinated frequency controller in the VPP. All simulations are performed considering both deterministic and stochastic variations of the wind and voltage-dependent loads.