Optimal Coordinated Bidding Strategy of Wind and Solar System with Energy Storage in Day-ahead Market

Although wind and solar power is the major reliable renewable energy sources used in grids, fluctuation unpredictability of these require use ancillary services, thereby increasing integration cost. This study proposes a wind, solar, pumped-storage cooperative (WSPC) model that can be applied to large-scale systems connected dispersed sources. provides an optimized coordinated bidding strategy day-ahead market, along with method facilitate revenue distribution among participating members. takes advantage natural complementary characteristics while using pumped storage adjust total output power. In strategy, proportion energies provided as firm power, which lower service requirement. Moreover, multi-period power-providing mode adopted reflect wind-solar each period accurately. The duration selected variable accommodate seasonal characteristics. ensures provision maintain high under varied ratios wind-solar, obtaining higher revenue. By method, short-term influencing factors are considered provide economic farms photovoltaic stations. this way, fairly realized Finally, effectiveness economy proposed validated based on actual data obtained from grid California, USA.