DETERMINATION OF THE OPTIMAL INITIAL PRESSURE IN SLIDING-PRESSURE OPERATION OF STEAM TURBINES

doi:10.19666/j.rlfd.2006.04.014

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DETERMINATION OF THE OPTIMAL INITIAL PRESSURE IN SLIDING-PRESSURE OPERATION OF STEAM TURBINES

更新时间：2025-09-28

- DETERMINATION OF THE OPTIMAL INITIAL PRESSURE IN SLIDING-PRESSURE OPERATION OF STEAM TURBINES
- Thermal Power Generation Issue 4, Pages: 42-43(2006)
- 作者机构：
  
  1. 华北电力大学
  2. 浙江省电力试验研究所
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2006.04.014
  CLC： TK267
- Published：2006
- 稿件说明：
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DETERMINATION OF THE OPTIMAL INITIAL PRESSURE IN SLIDING-PRESSURE OPERATION OF STEAM TURBINES[J]. Thermal power generation, 2006, (4): 42-43.
DOI：

DETERMINATION OF THE OPTIMAL INITIAL PRESSURE IN SLIDING-PRESSURE OPERATION OF STEAM TURBINES[J]. Thermal power generation, 2006, (4): 42-43. DOI： 10.19666/j.rlfd.2006.04.014.

摘要

运用系统分析的方法

在综合考虑主蒸汽压力的变化对调节级效率、给水泵耗功、通流部分效率、过热器和再热器的温度变化等影响的基础上

建立了汽轮机动态最优运行初压的数学模型。以张家口电厂300MW汽轮机的运行数据进行计算

并与制造厂所给最佳运行曲线相比较

结果表明:最优运行初压不是负荷的单值函数

而是与机组运行环境有关的复杂函数。

Abstract

Utilizing systematic analysis method

a mathematical model for determining the dynamic optimal initial pressure in sliding-pressure operation of steam turbines has been established on the basis of comprehensively considering the factors. such as the influence of main steam pressure variation upon efficiency of the governing stage

power consumption of the feed-water pump

efficiency of the flow passage

temperature variation of the superheater and the reheater etc. Taking 300 MW steam turbines in Zhangjiakou Power Plant as example

the operation data have been calculated

and comparison with the optimal operation curve provided from the manufacturer being made. Results show that the optimal initial pressure of operation isn’t a single-valued function of the load

but a complex funtion related to the operation environment of the unit.

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