空调负荷虚拟储能技术研究

由于建筑自身具有一定的热容量,空调制冷或制热功率发生变化时,建筑内温度的变化存在滞后;而人体对舒适温度的感觉也存在一个范围.利用"空调-建筑"系统的这两个特点,在保证用户基本舒适度要求的前提下,空调电功率可以按照外部需求主动调节,空调负荷也可等效成为电网中一个虚拟的电能存储装置.本文对影响空调负荷虚拟储能的主要因素进行分析,建立虚拟储能能量和功率模型;结合需求侧响应等典型应用,对虚拟储能的控制进行了介绍;利用实际测量结果和算例计算,验证了空调负荷虚拟储能用于电网调节的价值和可行性.

Research on virtual energy storage of air conditioning load

Because of the heat capacity of buildings,there is a delay in the inner temperature changes when the power changes during the air conditioning cooling or heating process.And there is a range of comfort temperature for human body.Using these characteristics of "air conditioningbuilding" system,the electric power of air conditioner could perform active adjustment in a certain range according to the external needs while maintaining users' basic comfort.In this way,air conditioning load can be equivalent to a virtual energy storage device in the power grid.The energy model and power model of virtual storage are established to evaluate the influence of different factors on the virtual storage of air conditioning load.Considering the typical application of demand response,the control strategy of virtual energy storage is introduced preliminarily.Finally,based on the actual situation,an example is given to calculate the capacity of the air conditioning load.It verifies that virtual energy storage is practicable and valuable for the power grid regulation.