区域综合能源系统电/气/热混合潮流算法研究

Study on Hybrid Heat-Gas-Power Flow Algorithm for Integrated Community Energy System

随着热电联产系统、中央空调及燃气锅炉的广泛使用,区域综合能源系统中电力、天然气和热力系统的耦合和联系日益紧密。为充分反映不同能源系统之间的交互影响,文中基于能源集线器理论,构建热电联产系统模型;科学考虑不同耦合形式和能源供应模式下电力网络和燃气管网的相关约束,给出区域综合能源系统的完全解耦、部分耦合以及完全耦合3种运行模式,并提出适用的混合潮流算法。测试结果表明,所发展的算法能够合理反映区域综合能源系统的稳态特性,适用于含有电/气/热3种能源系统的综合能源系统潮流计算。

With the integration of combined heat and power（CHP） units,air-conditioners and gas boilers,power,gas,and heat systems are becoming tightly linked to each other in the integrated community energy system（ICES）. Interactions among the three systems are not well captured by traditional methods. To address this issue,a hybrid power-gas-heat flow calculation method was developed in this paper. In the proposed method,an energy hub model was presented to describe interactions among the three systems incorporating various CHP operating modes. In addition,three operating modes were proposed for the ICES including fully decoupled,partially coupled,and fully coupled. Numerical results indicated that the proposed algorithm can be used in the steady-state analysis of the ICES and reflect interactions among various energy systems.