Modeling and Analysis of Adjustable Capacity of Public Building Aggregated Virtual Power Plant

Tao Wang, Renli Cheng, Tian Mao, Jiangnan Li, Wenmeng Zhao, Baorong Zhou
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Abstract

With the proposal of the construction goal of the new power system, it is expected that China's power grid will usher in the future large-scale new energy grid connection by 2030. As a result, the randomness and volatility of the power supply side will gradually increase. It is urgent to tap the potential of flexible regulation of load side resources and promote the transformation of power grid from source to load to source network interaction. Due to the thermal inertia of the building itself and the good regulation ability of the building automatic control system, the central air conditioning system of large public buildings is the largest load side adjustable resource pool of the urban power grid. This paper first makes a refined modeling of the central air-conditioning refrigeration system, quantifies the influence of different adjustment parameters on the adjustable potential of the central air-conditioning system, and then analyzes the influence of different comfort requirements on the maximum power regulation and steady-state power regulation of the central air-conditioning refrigeration system under the control mode of “constant flow and variable temperature difference” selected by the air-conditioning. Finally, taking actual air-condition system as an example, the adjustable potential of virtual power plants formed by the aggregation of urban buildings is evaluated, and the adjustable potential of various types of buildings is formed, which provides a reference basis for virtual power plants to screen adjustable resources.
公共建筑聚合虚拟电厂可调容量建模与分析
随着新电力系统建设目标的提出,预计到2030年,中国电网将迎来未来大规模的新能源并网。因此,供电侧的随机性和波动性将逐渐增加。挖掘负荷侧资源灵活调控潜力,推动电网从源向负荷向源网交互的转变已迫在眉睫。由于建筑本身的热惯性和建筑自控系统良好的调节能力,大型公共建筑中央空调系统是城市电网最大的负荷侧可调节资源池。本文首先对中央空调制冷系统进行了精细化建模,量化了不同调节参数对中央空调系统可调电位的影响;然后分析了在空调选择的“恒流量变温差”控制方式下,不同舒适性要求对中央空调制冷系统最大功率调节和稳态功率调节的影响。最后,以实际空调系统为例,对城市建筑聚集形成的虚拟电厂的可调潜力进行评价,形成各类建筑的可调潜力,为虚拟电厂筛选可调资源提供参考依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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