区域综合能源系统中考虑季节负荷特性的多能流耦合运行研究

Study on coupling operation of multi-energy flow for integrated community energy system considering seasonal load characteristics

为了深入研究区域综合能源系统中电、热以及天然气三种能量流的耦合情况,文中基于能源集线器理论,提出一种适用于冬夏两季不同负荷类型的通用能源集线器模型,建立了该模型下的耦合矩阵及运行模式,结合与之相连的天然气管网与配电网稳态计算,得到能源集线器的能量分配计划。以MATLAB及其simulink为平台实现对该系统的仿真计算,计算结果表明,所提出的模型及计算方法可用于分析能源集线器中不同能流的耦合程度,算法能够合理的反映区域综合能源系统的稳态特性。通过运行模式的对比与检验,进一步证明了考虑负荷特性的冬夏运行方式的合理性。

In order to do some further research on the energy coupling conditions among electricity, heat and natural gas in the integrated community energy system （ICES）, this paper proposed a universal energy hub model for different load types in winter and summer which is built on the energy hub theory. Then, a coupling matrix and operation mode for the model was established, and an energy distribution plan of the energy hub was obtained by the coupling calculation on natural gas pipeline network and distribution network. Calculation and simulation of the system are realized by MATLAB and Simulink, and the calculation results show that the proposed model and calculation method can be used to analyze the cou- pling degree of different energy flow in the energy hub. The algorithm can reflect the steady-state characteristics of ICES in a reasonable way. Besides, through the comparison and test of operation mode, a further proof of the rationality was made on the winter and summer operation mode which considering load characteristics.