Multi-level optimal dispatch strategy for a high proportion of wind power system considering the wind power ramping limit and frequency security constraints
Multi-level optimal dispatch strategy for a high proportion of wind power system considering the wind power ramping limit and frequency security constraints
In recent years,the large-scale integration of wind turbines featuring a strong uncertainty and weak supporting capability has posed a threat to the frequency security and stable operation of the new power system.To ensure the safe,high quality and economical operation of high proportion of wind power system,this paper proposes a multi-level optimal dispatch strategy considering the wind power ramping limit and frequency security constraints.First,considering the wind power prediction error and the requirements of wind farm grid-connection,the geometric description and characteristic analysis of wind power ramping in adjacent scheduling periods are carried out.Secondly,a station and system level joint dispatch structure considering day-ahead/intra-day/real-time multi-stage is proposed.A wind power station dispatch model considering wind power ramping limit constraint and a power system optimal dispatch model considering frequency security constraint are established.Finally,an example analysis is carried out based on the improved IEEE 39-bus system to verify the effectiveness of the proposed strategy.
关键词
风电爬坡限幅约束/频率安全约束/优化调度/储能电站/高比例风电/调频
Key words
wind power ramping limit constraint/frequency security constraint/optimal dispatch/energy storage power station/high proportion wind power/frequency control
维普
万方数据