9E级燃气轮机部分负荷进气加热提效技术研究与工程应用

9E Class Gas Turbine Part-load Performance Enhance Technology-Intake Heating Study and Engineering Application

本文在介绍燃气轮机设备运行特性和我国当前燃气轮机发电行业现状的基础上,对燃气轮机部分负荷运行情况进行了仿真计算研究和运行数据分析研究。根据实际运行数据分析,我国燃气电厂机组普遍存在实际运行负荷长期低于设计负荷、燃气轮机部分负荷运行效率衰减、高品位能源浪费巨大的问题。针对燃气电厂机组运行现状,本文通过对PG9171E型燃气轮机机组采用实际运行数据分析和仿真建模计算的方法,重点研究了燃气轮机入口空气温度调整对联合循环机组部分负荷工况性能的影响。根据研究结果,提出了一种利用燃气联合循环系统低品位余热作为热源的燃气轮机联合循环进气加热部分负荷提效技术,并对该技术在我国不同型号燃气轮机机组上的技术应用进行了分析。研究结论和实践结果表明,本文所述的燃气轮机部分负荷进气加热技术系统简洁,系统改造附加进气压损较小,能够适用于我国大部分在运燃气联合循环机组,并且能够显著提高联合循环部分负荷工况的运行效率。

Based on the introduction of the operating characteristics of gas turbine and the current situation of gas turbine power generation industry in China,simulation and operation data analysis of part-load operation of gas turbine is studied.Based on the operating data of gas turbine power plant,the problems of efficiency attenuation and energy waste in part-load operation of gas turbine generally exists.In view of the operation status,this paper studies the influence of gas turbine inlet air temperature adjustment on the performance of combined cycle units under partial load by analyzing the actual operation data of PG9171E type gas turbine units and simulating the power plant model.At the same time,according to the research results,a technical route of gas turbine part-load performance enhance technology,which is called inlet air heating,using low-grade waste heat of gas combined cycle system as heat source is proposed.And the application of this technology in different types of gas turbine in China is studied.The results show that the design of inlet air heating system is concise and the inlet air heating technology is applicable to most of the gas turbine in China and can significantly improve the operating efficiency of gas turbine under part-load conditions.