考虑需求差异的户用蓄热式电采暖优化运行策略

Optimal Operation Strategy for Household Electric Thermal Storage Heating Considering Demand Difference

蓄热式电采暖是农村和远郊分散居民清洁取暖的主要方式之一,其"先用电,后放热"的运行特征为统筹规划各时段的蓄热放热过程增加了难度。为改善用户采暖体验,促进蓄热式电采暖的推广,提出了一种户用蓄热式电采暖优化运行策略。采用等效热参数思想,构造了蓄热式电采暖的热动态模型;以温度效用值和负荷转移率分别作为用户采暖舒适性和经济性的评价指标,建立了求解采暖设备输入功率的优化模型,并引入需求偏好因子,方便用户在经济性和舒适性之间进行灵活调节;采用滚动优化方式和参数修正算法降低温度预报偏差和建筑性能参数变化带来的影响。仿真算例表明,所提优化运行策略能兼顾用户采暖舒适性和经济性,适用于不同需求偏好。

Electric thermal storage heating is one of the main methods of clean heating for scattered residents in rural and outer suburbs.The operation characteristic of"electricity consumption before heat release"increases the difficulty in overall planning for the heat storage and heat release process of each period.To improve the users’heating experience and promote the popularization of electric thermal storage heating,an optimal operation strategy for household electric thermal storage heating is proposed.Based on the idea of equivalent thermal parameters,the thermal dynamic model of electric thermal storage heating is constructed.The temperature utility value and load transfer rate are used as the evaluation indices for user heating comfort and economy,respectively.An optimization model is established for solving the input power of heating equipment,in which the introduced demand preference factor facilitates users to adjust flexibly between economy and comfort.The rolling optimization strategy and parameter correction algorithm are adopted to reduce the adverse effects caused by temperature prediction error and building parameters variation.The simulation results show that the proposed optimal operation strategy can simultaneously take into account the users’heating comfort and economy,and is suitable for different demand preferences.