高效灵活350 MW供热机型方案探讨  

Discussion on the Scheme of High Efficiency and Flexible of 350 MW Heating Supply Turbine Models

作　　者：罗方[1] 宋风强 欧阳杰[1] 袁永强[1] LUO Fang;SONG Fengqiang;OUYANG Jie;YUAN Yongqiaong(Dongfang Steam 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3期37-41,共5页Dongfang Electric Review

摘　　要：国内目前的采暖供热机组,主要以抽凝机、背压机以及改造为高背压供热的机型为主。传统抽凝机组的热电负荷解耦范围有限、调峰能力差,采暖季运行时占据了较大的发电份额,不利于风电等可再生能源的消纳。采暖背压机热电比较高,能很好满足供热的需求,但“以热定电”的运行模式导致了采暖供热背压机只能在冬季运行,投资回报率较低。开发供热能力突出、热电解耦范围大、调峰运行灵活性好的热电联合机组,在优化电力构成、节能减排方面具有重大意义。本文主要分析比较了各种采暖供热方案的优缺点,提出了几种高效、运行灵活的350MW采暖供热机型的设计方案,以供同类机组设计参考。The current domestic heating supply units are mainly based on extraction condensing, back presses and retrofitting high back pressure models.The traditional extraction condensing unit has a limited decoupling range of thermoelectric load and poor peak regulation capacity. It takes up a large share of power generation during the heating season, which is not conducive to the consumption of renewable energy such as wind power. The back pressure unit has relatively high thermal power and can meet the demand of heat supply. However, the operation model of “fixing power based on heat” causes the heating and heating back pressure machine to operate only in winter, and the return on investment is low. It is of great significance to optimize the power composition, energy saving and emission reduction by developing a cogeneration unit with high heating capacity, large decoupling range and good flexibility in peak regulation. This paper mainly analyzes the advantages and disadvantages of various heating supply schemes, and several high efficient and flexible 350 MW heating supply models are proposed to provide reference for the design of similar units.

关 键 词：热电联产 采暖供热 热电解耦 深度调峰 

分 类 号：TM621[电气工程—电力系统及自动化]