汽轮机低压缸旁路供热的电出力调节能力分析  

Analysis on Power Output Regulation Ability of Steam Turbine of Low Pressure Cylinder Bypass Heating

作　　者：王占洲[1] 曹丽华[1] 司和勇 WANG Zhan-zhou;CAO Li-hua;SI He-yong(School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学能源与动力工程学院,吉林132012

出　　处：《汽轮机技术》2021年第4期297-299,302,共4页Turbine Technology

基　　金：国家重点计划研发项目(No.2017YFB0902100)。

摘　　要：为了分析低压缸旁路供热对热电联产机组电出力调节能力的影响,建立了热电联产机组热力系统计算模型和电出力调节能力数学模型,并将计算结果与几种典型热电解耦方案进行比较。结果表明,热电联产机组进行低压缸旁路供热改造后,最大供热能力提升了69.88%,额定供热工况下机组的电出力调节能力提升了42.42%。同一供热负荷下,低压缸旁路供热方案的电出力调节能力高于蓄热罐和电锅炉方案,低于高低压旁路供热方案,但是低压缸旁路供热方案投资成本低、系统简单,不仅可以实现能量梯级利用甚至可以不产生冷源损失,具有更高的实际应用价值。In order to analyze the influence of low pressure cylinder bypass heating on power output regulation capacity,the thermal system model and power output regulation capacity modelof CHP(combined heat and power)unit are established,the results are compared with several typical thermoelectric decoupling schemes.It shows that the maximum heating capacity of CHP unit increased by 69.88%by low pressure cylinder bypass heating,the power output regulation ability increased by 42.42%.Under the same heating load,the power output regulation ability of low pressure cylinder bypass heating is higher than that of heat storage tank and electric boiler,and is lower than that of high pressure-intermediate pressure bypass heating,butthe low pressure cylinder bypass heating has higher practical application value for its low investment cost,simple system,energy cascade utilization and no cold source loss.

关 键 词：热电联产机组 汽轮机 旁路供热 电出力调节能力 

分 类 号：TK264[动力工程及工程热物理—动力机械及工程]