Research on Application and Benefits of Energy Storage Systems

At present, Energy storage systems are widely used in power supply, grid and end-users system. There have been extensive application explorations most scenarios China, such as smoothing fluctuation output tracking of new energy sources, assisting conventional units to participate frequency modulation, peak-shaving modulation the grid, system standby, peak-valley arbitrage load side, well demand reduction. This paper firstly investigates typical operation modes applied consumption scenarios, analyzes three important technical approaches order promote consumption, stabilize fluctuation, peak balancing. Secondly, evaluate economic benefits allocation projects different regions China by using self-developed software for analysis comprehensive system; thereafter strategic suggestions proposed. The results show that it is economical wind owners build Pumped Thermal Storage (PTES) even cheaper purchase PTES than electrochemical (EES) batteries users when same conditions applies. Owner-built owner-allocated Photovoltaic (PV) station poor economy. Under condition, allocated 1MW PV generation less 200 kW, EES relatively more PTES.