Verification system and method for ultra-supercritical unit multi-time reheat steam temperature control strategy

An ultra-supercritical unit, reheating steam temperature technology, applied in the control system, superheat temperature control, steam superheating, etc., can solve the problem of limited operating conditions of the unit and can not be arbitrary

Active Publication Date: 2017-02-08
XIAN TPRI THERMAL CONTROL TECH
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the unit is put into operation, the test and analysis method of optimizing and adjusting the actual unit is often used. However, due to the limitation of the operating conditions of the unit, the test cannot be carried out randomly and in a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Verification system and method for ultra-supercritical unit multi-time reheat steam temperature control strategy
  • Verification system and method for ultra-supercritical unit multi-time reheat steam temperature control strategy
  • Verification system and method for ultra-supercritical unit multi-time reheat steam temperature control strategy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0081] The boiler of an ultra-supercritical double-reheat unit is a direct-flow Bunsen furnace with two intermediate reheats. The steam turbine adopts the joint start mode of ultra-high / high / medium pressure cylinders, and the main steam is a series process, that is, the main steam enters from the ultra-high pressure cylinder VHP→exhausts to the first-stage reheater→enters the high-pressure cylinder HP→exhausts steam from the high-pressure cylinder HP to Secondary reheater → enter the medium pressure cylinder IP → low pressure cylinder LP → condenser, the steam water flow diagram of the unit is shown in figure 2 . Design the reheat steam temperature control logic of the ultra-supercritical double reheat unit according to the process of the unit, and carry out the real-time dynamic simulation test of the start-up and stop process of the unit through the multi-reheat steam temperature control strategy verification system of the ultra-supercritical unit. According to the flue gas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a verification system and method for an ultra-supercritical unit multi-time reheat steam temperature control strategy. Before a unit is put into operation, through the ultra-supercritical unit multi-time reheat steam temperature dynamic simulation environment, the reheat steam temperature control logics including flue gas recirculation, a swing combustor and a flue gas baffle are verified and optimized, so that the starting adjusting time of the real unit is shortened; and meanwhile, the problem that the optimization and adjustment test is limited by operation conditions when carried out on the real unit after the real unit is put into operation is solved. The system comprises a master computer, a dynamic simulation environment model, a virtual control station computer, the multi-time reheat steam temperature control logics, a virtual controller VDCS, a human-computer interface and I/O communication software. By means of the method of introducing the fineness of pulverized coal, the oxygen content, the n-time reheat steam pressures and the steam temperature correction set value, the reheat steam temperature control logics are optimized, so that high-quality control over the ultra-supercritical unit multi-time reheat steam temperature is achieved, and the needs of the ultra-supercritical multi-time reheat unit for safe, stable and efficient operation are met.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of automatic control of an ultra-supercritical unit of a power station, and in particular relates to a verification system and method for a multi-reheat steam temperature control strategy of an ultra-supercritical unit. Background technique [0003] my country's resource characteristics of "rich coal, poor oil, and little gas" determine the main position of coal-fired power generation in my country's energy structure. In the face of my country's rapid economic development, the huge pressure of power demand and environmental protection has put forward new requirements for my country's energy conservation and emission reduction, while improving the power generation efficiency of thermal power plants and reducing coal consumption for power generation, the application of ultra-supercritical secondary reheating technology will be The most effective means to reduce flue gas pollutants and carbon dioxide emi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F22B35/00F22G5/04G05B23/02
CPCF22B35/00F22G5/04G05B23/02
Inventor 蔡宝玲高海东杨新民薛建中顾正萌吴恒运储墨曹军郑小刚刘爱君万松森程国栋
Owner XIAN TPRI THERMAL CONTROL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap