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Operation optimization of regional integrated energy system based on the modeling of electricity-thermal-natural gas network

机译：基于电力 - 热天然气网络建模的区域综合能源运行优化

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摘要

The energy network is a hub center connecting the energy supply side and the energy demand side, which has high flexibility. At the same time, energy hub is the key to coupling different energy networks. Therefore, from the optimization of the output of the energy hub to the optimization of the coordinated operation state of the multi-energy network is the core of the regional integrated energy system operation optimization research. This paper focuses on the operation optimization of regional integrated energy systems based on modeling of Electricity-Thermal-Natural Gas Network. Firstly, a general model of Electricity network, Natural Gas network, and Thermal network is established, on this basis, according to the coupling mechanism of multi-energy network, a comprehensive model of Electricity-Thermal-Natural Gas coupling system is established. Secondly, considering the constraints such as energy balance and transmission power of external network, an economic dispatching model of regional integrated energy system considering ladder carbon trading mechanism is established with the objective of minimizing economic cost. Thirdly, Fruit Fly Optimization Algorithm is used to solve the economic dispatch model, and the optimization results of the energy hub are obtained. Combined with the general energy network model, the optimization results of each energy network are further obtained according to the characteristics of energy balance and energy flow transmission of the system, including equipment output, gas turbine efficiency, thermal medium velocity, etc. Finally, in order to illustrate the advantages of this method, "Following power load", "Following heat load", and "Optimal scheduling" are set up in the simulation, and the simulation results show that the total operation cost of "Optimal scheduling" mode is reduced by 8.44% and the environmental emission is reduced by 15.03% compared with the other two modes, and the technical and economic characteristics of "Optimal scheduling" mode have strong advantages in the three modes.
机译：能量网络是连接能量供应侧和能量需求侧的集线器中心，其具有高柔韧性。同时，能量集线器是耦合不同能量网络的关键。因此，从能量集线器的输出到优化多能量网络的协调操作状态的优化是区域集成能量系统操作优化研究的核心。本文侧重于基于电力 - 热天然气网络建模的区域综合能源系统的运行优化。首先，根据多能量网络的耦合机构建立了电网，天然气网络和热网络的一般模型，建立了一种综合电力 - 热天然气耦合系统模型。其次，考虑到外部网络的能量平衡和传输功率等限制，考虑阶梯碳交易机制的区域综合能源系统的经济调度模型，其目的是最大限度地减少经济成本。第三，水果飞行优化算法用于解决经济调度模型，获得能量枢纽的优化结果。结合通用能量网络模型，根据系统的能量平衡和能量流传输的特性进一步获得每个能量网络的优化结果，包括设备输出，燃气轮机效率，热介质速度等。最后，在为了说明这种方法的优点，在模拟中建立“热负荷之后”，“在热负荷之后”，“最佳调度”，仿真结果表明“最佳调度”模式的总运营成本是与其他两种模式相比，减少了8.44％，环境排放减少了15.03％，“最优调度”模式的技术和经济特征在三种模式下具有很强的优势。

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