FENG Zhihui， LU Lin,XU Lixiong，GUO Yanlin，RUAN Zhen，LIU Jinyuan，DING Yi
The randomness and volatility of large-scale clean energy output have made it difficult to connect to the grid， and the problem of wind and water abandonment has become increasingly prominent. Traditional ways to promote the efficient use of clean energy often come at the expense of system economic benefits， and often have limited capacity adjustments， making it difficult to ensure a high proportion of clean energy regulation needs. On this basis， we consider the construction of an energy hub that uses wind-water-gas coordinated operation with a high proportion of clean energy sources with complementary energy sources in the transmission network， and develops a two-stage optimization dispatch strategy， which including day-ahead stage and real-time stage， for energy hub to eliminate the adverse effects of abandoning wind and abandoning water on the economic benefits of energy hubs. A mixed integer linear programming model by linearization is formed and then solved with YALMIP/CPLEX solver. The results of the example show that the two-stage dispatch optimization strategy can effectively improve the efficiency of clean energy utilization and reduce the operating cost of the system.
