Day-ahead Scheduling Strategy of Wind-PV-CSP Hybrid Power Generation System by Considering PDR

Northwest China has been abound in wind and solar resources. However, due to the single form of cooperation between new energy power plants and the insufficient utilization of demand side resources, the problem of wind and solar curtailment is still serious. In response to this problem, this paper firstly combined the wind power plants and photovoltaic (PV) plants with the thermal energy storage (TES) of the concentrated solar power (CSP) plant through the electric heat transfer link, and then, the operation framework and principle of the Wind-Photovoltaic-CSP (W-PV-CSP) hybrid power generation system has been given. Then, by introducing the price-based demand response (PDR) and taking into account the uncertainty of the system while considering the optimal of comprehensive cost, this paper built the model of day-ahead scheduling of W-PV-CSP hybrid power generation system by considering PDR. Finally, a case study was performed in the IEEE 30 node system. The results of the simulation proved that the scheduling strategy proposed can effectively combine the source-load side optimization scheduling under the premise of meeting the safe operation of the grid, improve the accommodation of wind and solar, and reduce the comprehensive cost of the system. © 2020 Chin. Soc. for Elec. Eng.