基于热网互联的电热系统多时间尺度优化调度

Multi-time Scales Sptimization Scheduling of Electric Heating Combined SystemBased on Heat Network Interconnection

针对三北地区冬季供暖期间由于风热矛盾导致的弃风问题,提出了一种考虑风电消纳的电热联合系统调度策略。首先,在源侧通过热网互联的方式来解耦热电联产机组“以热定电”的约束,在负荷测考虑需求响应资源的参与来协助风电消纳;其次,分别在日前日内阶段以系统运行总成本最低和实时阶段以系统的调节成本最小为目标,综合考虑各类约束,构建电热联合系统的多时间尺度调度模型;最后,通过某地算例实验结果表明,所提调度策略可以有效地提高电热联合系统的风电消纳水平和经济性。

Aiming at the problem of wind abandonment caused by the contradiction between wind and heat during the winter heating in the Three-north areas of China,a scheduling strategy for electric heating combined system considering wind power consumption was proposed.Firstly,the"power determined by heat"constraints of combined heat and power units was decoupled through the heat network interconnection on the source side,and the participation of comprehensive demand response resources was considered on the load side to assist in wind power consumption.Secondly,the multi-time scales scheduling model of the electric heating combined system was established by considering various constraints,aiming at the lowest total system operation cost in the day before day and the lowest system regulation cost in the real-time stage.Finally,the experimental results of an example show that the proposed scheduling strategy can effectively improve the wind power consumption level and economy of the electric heating combined system.