考虑风电消纳的电-热综合能源系统优化运行

Optimal Operation of Integrated Electricity-heat Energy System Considering Wind Power Consumption

针对北方供暖期的弃风问题,在传统电-热联合系统的基础上,建立了横向电-热互补、纵向“源-网-储”的电-热综合能源系统。系统充分考虑了供热网的热动态特性和储电、储热两种形式的储能装置,在满足电、热需求的情况下,建立以最小运行成本为目标的优化运行模型。模型在Matlab中调用YALMIP工具箱和CPLEX求解器进行求解。通过算例仿真,分析了供热网的热动态特性和储能装置对系统运行成本和弃风量的影响。并讨论了不同储能配置下,储能投资成本对系统的影响,验证了模型的合理性。

In view of the problem of wind abandonment during the heating period in the northern China,a comprehensive electricity-heat energy system with horizontal electricity-heat complementation and longitudinal Source-Network-Storage is set up on the basis of the traditional electricity-heat combined system.The system fully considers the thermal dynamic characteristics of the heat supply network and such two types of energy storage devices as power storage and heat storage.In case of meeting the electricity and heat requirements,the optimal operation model with the minimum operation cost as objective is set up.The model is solved by calling YALMIP toolbox and CPLEX solver in Matlab.The thermal dynamic characteristics of the heat supply network and the influence of the energy storage device on the system operating cost and the amount of abandoned wind are analyzed through simulation of example.The impact of energy storage investment cost on the system under different energy storage configurations is also discussed and rationality of the model is verified.