郑卫东,李晓燕,熊志成
ZHENG Weidong,LI Xiaoyan,XIONG Zhicheng

• 1:华能国际电力股份有限公司玉环电厂

摘要(Abstract)：

随着发电产能普遍过剩和特高压覆盖面日益扩大,电网对火力发电机组的调峰提出了更加严格的要求。为了提高火电机组部分负荷运行的经济性及满足深度调峰的要求,火力发电厂及科研单位开展了灵活性改造及部分负荷经济性的研究与探索。确保汽轮机调门在任何工况下都工作在最佳阀位,可有效提高机组部分负荷的经济性,而机组运行的滑压曲线与汽轮机的工作阀位相关联。介绍了几种确定最佳滑压曲线的方法,探讨了如何在运行中使汽轮机调门始终维持在某一阀点,给出了几种滑压曲线的运行修正方案,分析对比了几种方案的优劣及要点,阐述了汽轮机滑压曲线修正的原则性方案。以上几种优化方案在国内火电机组均有成功运用,可为火电厂汽轮机滑压曲线优化提供借鉴。
With the general excess of power generation capacity and the increased coverage of UHV transmission lines, requirement of power grid on peak regulation of thermal power generating becomes increasingly stringent. In order to improve the economy of partial load operation of thermal power units and meet the requirements of deep peak-regulation, thermal power plants and scientific research units carry out research and exploration of flexibility transformation and partial load economy. To ensure the valve of the steam turbine works in the best position under any condition can effectively improve the economy of partial load of the unit,and the sliding pressure curve of the unit running is correlated with the working valve phase of the steam turbine. This paper introduces several methods to determine the optimal sliding pressure curve and discuss how to keep the valve of the steam turbine at a certain point in the operation; in addition, it gives several operational correction schemes of the sliding pressure curves, analyzes and compares the advantages and disadvantages of several schemes, and expounds the principle scheme of the correction of the steam turbine sliding pressure curve. The aforementioned optimization schemes are successfully adopted in domestic thermal power generation units and can provide reference for steam turbine sliding curve optimization in thermal power plant.

关键词(KeyWords)： 火电机组;滑压;优化;节能;背压补偿;定阀点
thermal power unit;sliding pressure;optimization;energy saving;back pressure compensation;fixed valve point

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郑卫东,李晓燕,熊志成
ZHENG Weidong,LI Xiaoyan,XIONG Zhicheng

DOI: 10.19585/j.zjdl.201806016

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