Review on Functions and Control Technologies of Virtual Power Plant
The basic design concept and the necessities of virtual power plant (VPP) are introduced after analyzing the future conditions of global energy demand. According to the differences in functions, VPP is divided into two roles, the commercial virtual power plant and the technical virtual power plant. After comparing their characteristics, related connections between them are proposed. Power quality control technologies and auxiliary services provided by VPP are discussed in detail based on current domestic and international research situation. Finally three scheduling control modes, the centralized mode, the decentralized mode and the distributed mode are compared. Correspondingly, the result that distributed control mode is more suitable for optimal scheduling control of VPP is pointed out.