Simulation and analysis of humid air turbine cycle based on aeroderivative three-shaft gas turbine  

基于航改三轴燃气轮机的湿空气透平循环建模与分析（英文）

作　　者：HUANG Di CHEN Jin-wei ZHOU Deng-ji ZHANG Hui-sheng SU Ming 黄地;陈金伟;周登极;张会生;苏明

机构地区：[1]The Key Laboratory of Power Machinery and Engineering(Ministry of Education),Shanghai Jiao Tong University,Shanghai 200240,China [2]State Grid Jiangsu Electric Power Research Institute,Nanjing 211103,China

出　　处：《Journal of Central South University》2018年第3期662-670,共9页中南大学学报（英文版）

基　　金：Project(2017YFB0903300)supported by the National Key R&D Program of China;Project(2016M601593)supported by the China Postdoctoral Science Foundation

摘　　要：Due to the fact that the turbine outlet temperature of aeroderivative three-shaft gas turbine is low,the conventional combined cycle is not suitable for three-shaft gas turbines.However,the humid air turbine(HAT)cycle provides a new choice for aeroderivative gas turbine because the humidification process does not require high temperature.Existing HAT cycle plants are all based on single-shaft gas turbines due to their simple structures,therefore converting aeroderivative three-shaft gas turbine into HAT cycle still lacks sufficient research.This paper proposes a HAT cycle model on a basis of an aeroderivative three-shaft gas turbine.Detailed HAT cycle modelling of saturator,gas turbine and heat exchanger are carried out based on the modular modeling method.The models are verified by simulations on the aeroderivative three-shaft gas turbine.Simulation results show that the studied gas turbine with original size and characteristics could not reach the original turbine inlet temperature because of the introduction of water.However,the efficiency still increases by 0.16%when the HAT cycle runs at the designed power of the simple cycle.Furthermore,simulations considering turbine modifications show that the efficiency could be significantly improved.The results obtained in the paper can provide reference for design and analysis of HAT cycle based on multi-shaft gas turbine especially the aeroderivative gas turbine.由于航改三轴燃气轮的排气温度很低,传统的联合循环技术并不适用于三轴燃气轮机。湿空气透平(HAT)循环不需要高温余热,因此,为航改燃气轮机提供了一种新的选择。然而由于单轴燃气轮机结构更加简单,现有的HAT循环试验电站都是基于单轴燃气轮机设计的,而将航改燃气轮机改造为HAT循环依然缺乏充分的研究。本文提出了一种基于航改燃气轮机的HAT循环模型,详细介绍了基于模块化建模的饱和器、燃气轮机和换热器的建模方法,并通过对国产某航改三轴燃气轮机的仿真验证了该方法的准确性。仿真结果表明,在不改变燃气轮机尺寸和运行特性的前提下,直接转变为HAT循环后,由于注入水的缘故,系统无法达到原有的额定透平进口温度。但是,当HAT循环运行在额定功率时,系统效率依然可以提高0.16%。此外,仿真结果还表明,当考虑燃气轮机改型后,HAT循环效率的提升非常显著。文章结果对基于多轴燃气轮机,特别是航改燃气轮机的HAT循环设计与分析提供了参考。

关 键 词：humid air turbine aeroderivative gas turbine SATURATOR SIMULATION 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]