风光气供能系统优化配置及技术经济分析

Optimal Configuration and Technical-economic Analysis of Wind Energy Solar Energy and Natural Gas Energy Supply System

本文以某居民楼为研究对象,构建风、光、天然气互补的冷热电三联供系统。利用DeST软件模拟用户全年逐时冷、热、电负荷,按照负荷规律将全年划分为供暖期、供冷期和过渡期三个阶段。引入差分进化算法,从能源、经济和环境三个方面对装机容量配置和设备出力配置进行多目标优化。计算优化配置模型的项目收益率及回收期,并进行敏感性分析。研究表明,与传统供能系统相比,所得配置模型下的系统能源利用率更高,具有较好的经济和环境效益。

This paper takes a residential building as the research object and constructs a combined cooling,heating and power system with complementary wind,solar and natural gas.The DeST software is used to simulate the user's hourly cooling,heating,and electric loads throughout the year,and the whole year is divided into three stages:heating period,cooling period and transition period according to the load law.The differential evolution algorithm is introduced to optimize the configuration of installed capacity and equipment output from the three aspects of energy,economy and environment.The project return rate and payback period of the optimized configuration model is calulated,and sensitivity analysis is conducted.The research shows that compared with the traditional energy supply system,the system energy utilization rate under the obtained configuration model is higher,and it has better economic and environmental benefits.