STUDY ON CONSTRUCTION OF HEAT RELEASE SIGNAL FOR ULTRA-SUPERCRITICAL UNITS

SUN Qun-li; LI Jia-chuan; WANG Zhao; MA Yu-miao College of Energy and Power Engineering

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STUDY ON CONSTRUCTION OF HEAT RELEASE SIGNAL FOR ULTRA-SUPERCRITICAL UNITS

Thermal Power Generation Vol. 38, Issue 9, Pages: 37-39(2009)

更新时间：2025-09-28

- STUDY ON CONSTRUCTION OF HEAT RELEASE SIGNAL FOR ULTRA-SUPERCRITICAL UNITS
- 作者机构：
  
  华北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published：2009
- 稿件说明：
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SUN Qun-li, LI Jia-chuan, WANG Zhao, et al. STUDY ON CONSTRUCTION OF HEAT RELEASE SIGNAL FOR ULTRA-SUPERCRITICAL UNITS[J]. Thermal Power Generation, 2009, 38(9): 37-39.
DOI：

SUN Qun-li, LI Jia-chuan, WANG Zhao, et al. STUDY ON CONSTRUCTION OF HEAT RELEASE SIGNAL FOR ULTRA-SUPERCRITICAL UNITS[J]. Thermal Power Generation, 2009, 38(9): 37-39. DOI：

摘要

提出一种从汽水系统吸热过程中提取热量信号的方法。对国内超超临界1000MW机组水冷壁的吸热特性进行了分析

发现水冷壁吸热量与煤燃烧发热量之间存在近似线性关系

由此推导出利用水冷壁的吸热量计算热量的方法并构造热量信号。试验结果表明

该信号能够更快更准确地对系统进行反馈。同时

仿真表明

采用该信号的协调控制系统可以改善其控制品质

且便于实际应用。

Abstract

A method for extracting heat release signal from heat-absorbing process in the steam-water system has been proposed

and the heat-absorbing behavior of water-wall in ultra-supercritical 1 000 MW units at home being analysed

it is discovered that the relationship between the amount of heat absorption by water-wall and the calorific value of burned coal to be approximate linearity.Thereby

it can be deduced a method for calculating the released heat by using the heat amount absorbed by the water-wall

and to construct a heat release signal.The results of test carried out on a 1 000 MW unit show that the said signal can be more rapidly and more precissely fed back to the system.Meanwhile

emulation shows that the control quality of a coordinated control system can be improved by adopting the said signal

and it is comparatively easy in practical application.

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Publicity Resources

Research on coupling calculation method of combustion and hydrodynamics for water walls in ultra-supercritical double-reheat boilers

SCALING ON THROTTLE PLATE OF THE WATER-WALL IN BOILER FOR ULTRA-SUPERCRITICAL UNIT AND DISPOSAL THEREOF

Water wall temperature deviation of an ultra-supercritical 1 000 MW unit boiler: analysis and countermeasures

Computational analysis on hydrodynamic characteristics and flow instability of an ultra supercritical 1 000 MW double-reheat unit boiler

Experimental investigation on two-phase flow instability of ultra supercritical pressure boiler with spirally water wall tubes

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