State-space steam temperature control method for power station boiler

A technology of state space and steam temperature control, applied in superheat temperature control, steam superheating, steam generation, etc., can solve the problems of unit steam temperature lag, control loop system difficult to achieve control effect, water spray valve nonlinearity, etc., to achieve The effect of high control quality, high labor intensity and lightening labor intensity

Active Publication Date: 2020-08-21
上海圆曦电力科技有限公司
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the automatic control systems of thermal power units are realized by conventional classical control theory, and it is difficult to achieve ideal control effects for complex control loop systems
At present, the superheated steam temperature 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
  • State-space steam temperature control method for power station boiler
  • State-space steam temperature control method for power station boiler
  • State-space steam temperature control method for power station boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] A method for state space steam temperature control of a power plant boiler, characterized in that it comprises the following steps:

[0050] Step 1, export the operation history data of the measuring points related to the boiler steam temperature, and the sampling period is 1S;

[0051] Step 2, performing averaging, smoothing and filtering processing on the exported operation history data file to obtain a processed database with a sampling period of 10S;

[0052] The ...

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 discloses a state-space steam temperature control method for a power station boiler, and relates to the technical field of steam temperature automatic control. According to the difference of on-site unit control DCSs, different PID control types can be selected, self-optimization of state space control steam temperature and parameter setting is adopted, optimization control indexes and optimization control parameters are selected, the whole control system is tested and optimized, and steam temperature optimization control is rapidly achieved. According to the method, the long-term average steam temperature value of a generator unit is increased, the minimum steam temperature can be controlled to increase by 10 DEG C or above, and the coal consumption rate of the generator unit is reduced by 1.20 g/kw.h. The power station boiler can be kept in an automatic control state all the time, the labor intensity of operators is greatly reduced, the change in the temperature of superheated steam is too small, the safe operation rate of the unit is improved, and the service life of equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a method for controlling steam temperature in a state space of a power station boiler. Background technique [0002] Most of the automatic control systems of thermal power units are implemented by conventional classical control theory, and it is difficult to achieve ideal control effects for complex control loop systems. At present, the superheated steam temperature and reheated steam temperature control of power plant boilers almost all adopt the conventional cascade control system, and the steam temperature controlled objects of many units have a large lag, and the water injection valve has serious nonlinearity. When the unit load (steam flow) changes, the steam temperature deviates from the set value by more than 8-10°C, and the over-temperature is very frequent. The main and reheat steam temperature is an important parameter in the thermal system of the unit, and t...

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): F22G5/20
CPCF22G5/20
Inventor 丁建设
Owner 上海圆曦电力科技有限公司
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