基于用户舒适度区间约束的电热区域综合能源 系统优化运行研究

由于风电资源的波动性与随机性，需要电热区域综合能源系统具备一定的灵活性来匹配风的变化以减小弃风。热负荷无论在管道传输还是建筑内部供热，都具有一定热惯性，这使得热负荷曲线随风电波动进行一定的调整，是区域综合能源系统灵活性运行的重要手段。现有研究中热惯性往往在预先设定的范围内变化，缺乏应对热惯性在系统中波动的理论指导。为此，引入用户舒适度概念，将热惯性与室内、室外温度实时关联起来，提出一种基于用户舒适度区间约束的电热区域综合能源系统优化运行方法。考虑用户舒适度的室内温度平衡，建立以室内散热量为控制变量、以系统总运行成本和弃风惩罚成本最小为优化目标的运行优化模型。通过算例分析，所提方法能够在用户的舒适区间内有效降低运行成本，同时提高弃风消纳能力。

Optimal operation of an electric heating region integrated energy system based on a user comfort interval constraint

Because of the volatility and randomness of wind power, it is necessary for an integrated energy system in an electric heating area to have a certain flexibility to match the wind changes and reduce wind abandonment. Thermal load, whether in pipeline transmission or in building internal heating, has a certain thermal inertia, which means that the thermal load curve can be adjusted to a certain extent by wind electric fluctuation. This is an important means of flexible operation of a regional integrated energy system. In existing research, thermal inertia often changes within a predetermined range, and there is no theoretical guidance to deal with the fluctuation of thermal inertia in the system. This paper introduces the concept of user comfort, correlates thermal inertia with indoor and outdoor temperatures in real time, and proposes an optimal operation method of an electric heating zone integrated energy system based on the constraint of user comfort interval. Considering the indoor temperature balance of user comfort, an operational optimization model is established to minimize the total operating cost and wind abandonment penalty cost of the system with indoor heat dissipation as the control variable. An example is given to show that the proposed method can effectively reduce operating cost within the user''s comfort zone and improve the wind abandonment capacity. This work is supported by the Science and Technology Project of State Grid Corporation of China (No. 2021YF-48).