Research on Grid-connected Performance of Solar-thermal-storage Coupled System Including Thermal, PV and Flywheel

Abstract With the rapid development of renewable energy, demand for frequency regulation and peak shaving coal-fired power plants is increasing. As utilization hours are gradually reduced, economy reduced. In order to improve economic benefits thermal plants, changing from income model dominated by generation “cogeneration auxiliary service”. Among them, energy storage system Lingwu plant Ningxia electric company Guoneng group belongs first large-scale large-capacity solar (flywheel) project at home abroad. While ensuring functions conventional supply, heating cogeneration, can also provide services, support safe stable operation a large grid, flexibility traditional plants. application new technologies in improving generating units services will be main direction groups. At same time, it puts forward requirements grid operation.