三联供能源系统优化建模与调度方法

甘中学, 郑超越, 许裕栗, 李德伟, 陈文博

控制工程 ›› 2020, Vol. 27 ›› Issue (6) : 1103-1112.

控制工程 ›› 2020, Vol. 27 ›› Issue (6) : 1103-1112.

三联供能源系统优化建模与调度方法

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Energy Optimization Modeling and Scheduling Method for CCHP System 

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摘要

本文研究了综合多种能源形式的能源管理系统(EMS)的建模与优化调度。利用分布式发电设备以及内燃机三联供系统,本文将发电、制冷、供热过程一体化,从能源生产,储运,回收以及应用 4 个环节出发,基于热力学熵的变化原理,建立各个组成部分的熵增模型。进而,本文建立了以系统熵增最小为优化目标的能源优化模型,提出采用滚动调度的方式进行能源调度,并利用 GPU 来求解这一混合整数非线性优化问题。结合某酒店建筑群典型冬季供热季与夏季制冷季的某一天内 24 h 电冷热需求预测,文章比较了以系统熵增最小为优化目标和以运行成本最低为优化目标的优化调度方法的调度结果。从结果可以看到,由于基于熵增模型的 EMS 调度考虑了使用不同能源造成的品质变化,使得调度结果的能源利用率提高,且对于环境更友好。

Abstract

This paper mainly studies the problem of the hybrid modelling and optimization for combined cooling heating and power (CCHP) system. For the triple-supply systems with distributed power generation equipment and internal combustion engines, this paper integrates all the power generation, cooling, and heating processes as the four links, i.e. energy production, storage, transportation, recycling, and application. Based on the principle of thermodynamic entropy change, the entropy models of various components are established. Furthermore, this paper establishes the optimal model of energy based on the minimization of system entropy increase, proposes a rolling scheduling method for energy scheduling, and uses GPU to solve this mixed-integer nonlinear optimization problem. Combining the 24-hour electric cooling and heat demand forecast in a typical winter season and the summer cooling season in a certain hotel building group, it compares the scheduling results with the minimum system entropy as the optimization goal and the minimum operation cost as the optimization goal. From the results, it can be seen that the EMS scheduling based on the entropy increase model is more friendly to the environment and improves the efficiency of energy by taking into account the quality changes of different energy sources. 

关键词

电冷热三联供 / 分布式发电 / 混合整数非线性规划 / 滚动优化 / 能量品位 / 熵增最小

Key words

Combined cooling heating and power (CCHP) / distributed generation / mixed-integer nonlinear programming problem / rolling optimization / energy grade / minimum entropy increase 

引用本文

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甘中学, 郑超越, 许裕栗, 李德伟, 陈文博. 三联供能源系统优化建模与调度方法[J]. 控制工程, 2020, 27(6): 1103-1112
GAN Zhong-xue, ZHENG Chao-yue, XU Yu-li, LI De-wei, CHEN Wen-bo. Energy Optimization Modeling and Scheduling Method for CCHP System [J]. Control Engineering of China, 2020, 27(6): 1103-1112

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