LNG联合循环电厂燃料深度利用的分析与研究  

Analysis and Research on Deep Utilization of LNG Combined Cycle Power Plant Fuel

作　　者：吕敏 杨小军[1] 梁珊珊[1] 夏开君[1] 陶健[1] LV Ming;YANG Xiaojun;LIANG Shanshan;XIA Kaijun;TAO Jian(Dongfnag Turbine Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气东方汽轮机有限公司

出　　处：《东方电气评论》2019年第2期22-25,共4页Dongfang Electric Review

摘　　要：燃气-蒸汽联合循环电厂是当今世界上发电效率最高的电厂,LNG不但可以作为联合循环机组的燃料,还可以作为燃机进气冷却的冷源。本文介绍了联合循环电厂发电原理,通过热量平衡和联合循环变工况计算,分析了LNG燃料冷能用于进气冷却的可行性,影响进气冷却效果的因素,以及LNG冷却对整个机组出力和效率的影响趋势,为电厂进一步评估机组调峰能力提供依据。Gas-steam combined cycle power plant is the most efficient power plant in the world. LNG is not only used as fuel for the combined cycle unit, but also as a cold source for gas turbine inlet air cooling. This paper introduces the power generation principle of the combined cycle power plant, and the feasibility of LNG fuel cold energy for inlet air cooling, the factors influencing the inlet air cooling effect, the influence trend of LNG cooling on the output and efficiency of the whole unit are analyzed by calculating the heat balance and off-design conditions of the combined cycle, it provides the basis for further evaluating the peak-regulation capacity of power plant.

关 键 词：联合循环 LNG 进气冷却 机组性能 

分 类 号：TK14[动力工程及工程热物理—热能工程] TM611.31[电气工程—电力系统及自动化]