考虑风电及可中断负荷一次调频能力的日前调度模型

Day-ahead Dispatching Model Considering Primary Frequency Regulation Capability of Wind Power and Interruptible Load

大规模风电并网使得系统的随机性和波动性进一步增强,传统仅由常规机组参与一次调频的控制方式将使得系统频率可能无法满足安全要求。因此,本文在此基础上考虑大规模风电和需求侧可中断负荷同时参与系统一次调频,建立了稳态-暂态协调优化的日前调度模型。本文选取新英格兰10机39节点系统作为算例,重点分析了风电是否参与一次调频和可中断负荷容量大小对系统机组组合结果及调频效益的影响,研究表明大规模风电及需求侧可中断负荷的参与将使得系统频率安全得到进一步提升。

The large-scale wind power grid connection makes the random and fluctuation of the system increase further.The traditional control modes that only conventional units participate in primary frequency modulation will make the system frequency have no way to meet the safety requirements.Therefore,on this basis,the day-ahead dispatching model of steady-transient coordination optimization is set up with consideration of simultaneous participation of primary frequency regulation of system by the large scale wind power and the interruptible load of the demand side in this paper.The New England 10 generator 39 node system is selected as an example in this paper to analyze whether wind power participates in primary frequency regulation and the influence of interruptible load capacity on system unit commitment results and frequency regulation benefits.The research shows that the participation of large-scale wind power and demand side interruptible load will improve the system frequency safety further.