印度塔尔万迪火电厂汽轮机等效热降法的实例计算
许涛¹，余磊²，周超²
（1. 国网湖北省电力有限公司电力科学研究院，湖北武汉430077；2. 湖北方源东力电力科学研究有限公司，湖北武汉430077）
摘要： 等效热降法是一种汽轮机热力计算方法，相比常规热力计算，它用简洁的局部计算代替整个系统的繁杂计算，
大大简化了计算过程，是火电厂局部定量分析的一种重要工具。以印度塔尔万迪火电厂660 MW 汽轮机热平衡图为依
据，详细给出了抽汽等效热降Hj 和抽汽效率H_j 的计算公式和结果，并且用等效热降法计算了此工况下汽轮机的热耗，
所得结果与设计值基本一致，为火电厂汽轮机等效热降法提供了实例参考。
关键词： 汽轮机；等效热降法；计算
中图分类号： TK262 文献标志码： A 文章编号： 2095-0802-(2020)09-0086-03
Example Calculation of Equivalent Enthalpy Drop Method for Steam Turbine in India Talwandi
Thermal Power Plant
XU Tao¹, YU Lei², ZHOU Chao²
(1. Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, Hubei, China; 2. Hubei
Fangyuan Dongli Electric Power Science & Research Limited Company, Wuhan 430077, Hubei, China)
Abstract: Equivalent enthalpy drop method is a thermal calculation method of steam turbine. Compared with conventional thermal
calculation, it uses simple local calculation instead of complicated calculation of the whole system, greatly simplifies the calculation
process, and is an important tool for local quantitative analysis of thermal power plants. Based on the heat balance diagram of
660 MW steam turbine in Talwandi Thermal Power Plant of India, the calculation formulas and results of extraction equivalent
enthalpy drop Hj and extraction efficiency H_j were given in detail, the heat consumption of steam turbine under this condition was
calculated by the equivalent enthalpy drop method. The results were basically consistent with the design value, which provided an
example reference for the equivalent enthalpy drop method of steam turbine in thermal power plant.

Key words: steam turbine; equivalent enthalpy drop method; calculation