燃气发电机组变负荷特性对分布式能源系统选型的影响  

Influence of variable load characteristic of gas generator on type selection of distributed energy system

作　　者：孙景阳 胡英华[2] 胡勇 胡玉平[1] SUN Jingyang;HU Yinghua;HU Yong;HU Yuping(School of Energy and Power Engineering,Shandong University,Jinan 250061,China;Shantui Construction Machinery Co.,Ltd.,Jining 272073,China)

机构地区：[1]山东大学能源与动力工程学院,山东济南250061 [2]山推工程机械股份有限公司,山东济宁272073

出　　处：《内燃机与动力装置》2021年第3期31-38,共8页Internal Combustion Engine & Powerplant

基　　金：国家重点研发计划项目(2017YFC0211305)。

摘　　要：为了实现分布式能源系统的合理选型匹配,对不同负荷下燃气发电机组的发电效率和热电比曲线进行拟合,以某小区冷热电负荷及电价为计算条件,年总成本费用为目标函数,设置计算对照组,研究燃气内燃机变工况特性对分布式能源系统寻优选型的影响。结果表明:燃气发电机组变工况的热电比和发电效率对系统选型和年总成本影响显著,与采取额定参数作为计算输入条件相比,本文的计算模型和备选设备条件下,变热电比可以使年总成本减少4.02%,年可节约标准煤1161.31 t;变发电效率可以使年总成本减少6.17%,年节约标准煤2865.91 t;二者可以使年总成本减少5.62%,年节约标准煤2671.17 t。In order to realize the reasonable selection and matching of distributed energy system,the generation efficiency and thermal power ratio curves of gas turbine generator set under different loads are fitted.Taking the cooling,heating and power load and electricity price of a residential area as the calculation conditions,and the annual total cost as the objective function,the calculation control grop is set,the influence of off-design performance of gas engine on the optimal selection of distributed energy system is studied.The calculation results show that considering the heat-to-electric ratio and power generation efficiency of gas turbine generator sets have a significant impact on system selection and total annual cost.Under the conditions of this calculation model and alternative equipment,compared to using rated parameters as the calculation input conditions,the variable heat-to-electric ratio can reduce the total annual cost by 4.02%,save 1161.31 tons of standard coal.The variable power generation efficiency can reduce the total annual cost by 6.17% and save 2865.91 tons of standard coal.Taking the two together can reduce the total annual cost by 5.62%,and save 2671.17 tons of standard coal.

关 键 词：燃气发电机组 变工况特性 发电效率 热电比 分布式能源 

分 类 号：TM611.2[电气工程—电力系统及自动化]