摘要
介绍了供热机组调峰的几种手段,以蓄热水罐储热技术作为重点,利用EBSILON软件进行精确建模,在相应的案例机组中对其进行应用计算,结果显示:对于300MW抽凝式供热机组,利用储热容量为1008MW·h蓄热水罐白天蓄热18h,晚上放热6h,可使夜间调峰负荷由169.6MW降到78MW,增加调峰深度91.6MW,相当于机组负荷率由56.3%降到26%。夜间调峰能力的改变影响机组经济收益7.9万元,只考虑运行效益的情况,计算的调峰补偿成本接近0.15元/(kW·h);调峰补偿成本与热价无关,随着煤价的上升而下降,随着电价的上升而上升;同时随着蓄热水罐蓄热能力的增加,调峰补偿成本有下降的趋势,但基本维持在0.14元/(kW·h)~0.15元/(kW·h)之间。研究成果为电厂机组参与调峰补偿提供了一定的依据。
Introduced several means of peaking the heating unit.Focusing on the heat storage technology of the hot water tank,the EBSILON software is used for accurate modeling,and the application calculation is carried out in the corresponding case unit.The results show that for the 300MW pumping-type heating unit,the heat storage capacity of the storage tank of 1008MW·h is stored for 18h during the day and 6h at night,which can reduce the night peak load from 169.6MW to 78MW and increase the peaking depth by 91.6MW,equivalent to the unit load rate reduced from 56.3%to 26%,the change in night peaking capacity affects economic income of 79000 Yuan,Only considering the operating efficiency,the peaking compensation difference should be greater than 0.15 Yuan/(kW·h).The peak shaving compensation price has nothing to do with the hot price,and it decreases with the increase of coal price,and rises with the increase of electricity price;At the same time,with the increase of the heat storage capacity of the hot water storage tank,the peak adjustment compensation price has a downward trend,but it is basically maintained between 0.14 Yuan/(kW·h)~0.15 Yuan/(kW·h).The research results provide a basis for peak shaving compensation.
作者
杨海生
张拓
唐广通
王文营
杜威
徐钢
YANG Hai-sheng;ZHANG Tuo;TANG Guang-tong;WANG Wen-ying;DU Wei;XU Gang(State Grid Hebei Electric Power Company Limited Research Institute,Shijiazhuang 050022,China;School of Energy,Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)
出处
《汽轮机技术》
北大核心
2020年第5期385-388,共4页
Turbine Technology
关键词
蓄热水罐
供热机组
深度调峰
运行效益
调峰补偿
thermal storage tank
heating unit
deep peak shaving
operational efficiency
peak shaving compensation
