摘要
低压缸零出力技术可有效提升机组供热能力和调峰能力。针对某320 MW供热机组,采用Ebsilon软件计算分析了低压缸零出力方式供热性能,结果表明,采用低压缸零出力方式供热,机组最大供热抽汽量提升97%,在250 MW供热负荷下,供电煤耗可降低61 g/(kW·h);试验研究了机组低压缸零出力方式供热能力工况,实测得出,机组最大供热负荷可达到476 MW,最小电负荷可降至79.5 MW;基于上一年度供热期运行数据,对低压缸零出力方式供热的经济性进行了分析,结果显示,采用低压缸零出力方式供热可节约标准煤5581 t。
Using low-pressure cylinder zero output technology can effectively improve the heating capacity and peak regulation capacity of the generation unit.In this paper,taking a 320 MW heating unit for example,firstly,Ebsilon software is used to calculate and analyze the heating performance of low-pressure cylinder zero output.The results show that the application of low-pressure cylinder zero output technology increased the maximum heating extraction steam flow of the unit by 97%,and reduced the net coal consumption by 61 g/(kW·h)at 250 MW heating load.Then,the test study on the heating capacity of low-pressure cylinder zero output mode of the unit was carried out.Field measurements show that the maximum heating load of the unit can reach as much as 476 MW,while the minimum electric load can be reduced to 79.5 MW.At last,based on the operation data of the heating season of previous year,the economic performance of low-pressure cylinder zero output mode is analyzed.The results show that using this heating mode can save 5581 t of standard coal equivalent.
作者
刘双白
张晶
吴昕
胡娱欧
LIU Shuangbai;ZHANG Jing;WU Xin;HU Yuou(State Grid Jibei Electric Power Research Institute(North China Electric Power Research Institute Co.,Ltd.),Beijing 100045;North China Branch of State Grid Corporation of China,Beijing 100053)
出处
《中国电力》
CSCD
北大核心
2021年第5期213-220,共8页
Electric Power
基金
国家电网公司华北分部技术服务项目(火电机组灵活性改造技术评价研究,S20FW029)。
关键词
低压缸零出力
热电联产
供热量
节能量
low-pressure cylinder zero output
heat-electricity cogeneration
heating load
energy saving
