计及需求响应及环保成本的含储热CHP与风电联合优化调度

Joint Optimal Dispatching of CHP With Heat Storage and Wind Power Considering Demand Response and Environmental Protection Cost

清洁无污染的风力发电是解决全球能源危机的关键技术之一,但同时消纳难题也是制约其发展的主要因素。构建了考虑需求响应及环保成本的含储热热电联产(combined heatandpower,CHP)机组与风电联合发电优化调度模型,源侧采用储热装置打破CHP机组以热定电的耦合约束,荷侧融入需求响应来调整用户电负荷曲线。通过优化各机组出力以及电负荷需求曲线,提高风电并网消纳量,降低硫硝化合物排放量。该模型以系统运行成本最小为目标,综合考虑源侧环境保护税及荷侧用户用电满意度约束,通过CPLEX进行求解。最后,以IEEE-30节点系统为例进行分析,算例结果表明该模型在兼顾发电侧运行成本的同时保证了用户侧的用电质量,能有效促进风电消纳,减少污染物排放。

Clean pollution-free wind power is one of the key technologies to solve global energy crisis,but at the same time the problem of accommodation is also the main factor to restrict its development.A combined optimal dispatching model of combined heat and power(CHP)unit with heat storage and wind power is constructed considering demand response and environmental protection cost.The source side utilizes heat storage device to break the coupling constraint of"power determined by heat"of the CHP unit,and the load side is merged into demand response to adjust the users’electric load curve.By optimizing the output of each unit and the demand curve of electrical load,the wind power connected to the grid is increased and the emission of sulfur and nitrogen compounds is reduced.The model takes the minimum operation cost of the system as objective,comprehensively considers the environmental protection cost on the source side and the satisfaction degree of the users’electricity consumption on the load side,and solves it with CPLEX.Finally,IEEE 30-node system is taken as an example for analysis.The results of the example show that the model can ensure power quality of the users side while taking into account the operating cost of the power generation side,effectively promote wind power accommodation and reduce contaminant emissions.