Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Thermal power unit prediction control strategy based on main stream pressure

A main steam pressure, predictive control technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of inaccurate boiler combustion control, inability to reproduce the dynamic characteristics of the pulverizing system, boiler heat release fluctuations, etc. problem, to achieve the effect of solving the problem of heat release fluctuation, improving stability and anti-disturbance ability

Active Publication Date: 2017-09-15
HANGZHOU E ENERGY ELECTRIC POWER TECH +3
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Inaccurate boiler combustion control
After the pulverized coal is ground by the coal mill and enters the furnace, the calorific value of the pulverized coal is constantly changing, coupled with the deficiency of the existing pulverizing system, the heat release in the boiler often fluctuates
[0004] (2) Unreproducible dynamic characteristics of the milling system

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
  • Thermal power unit prediction control strategy based on main stream pressure
  • Thermal power unit prediction control strategy based on main stream pressure
  • Thermal power unit prediction control strategy based on main stream pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] The present invention will be further explained below with reference to the drawings.

[0067] The predictive control strategy of thermal power unit based on main steam pressure of the present invention includes the following steps:

[0068] Step 1. Build the main steam pressure prediction model;

[0069] Step11 Suppose the mathematical model of feed water flow Fw to main steam pressure has the following CARIMA model:

[0070]

[0071] Where Is the weight; Pt(k) is the main steam pressure at sampling time k, MPa; Is the estimated value of main steam pressure at sampling time k, MPa; Fw d Is the feedback water supply, t / h; Fw f It is the feedforward of the water supply, t / h; Fu is the total coal supply, t / h; Tm is the opening of the steam turbine valve, %; Fw is the total water supply, t / h; Fw(k)=Fw d (k)+Fw f (k); B 1 , B 2 , C 1 All are polynomial coefficients; Δ=1-q -1 Is the increment factor; Are the constants constituting the Diophantine equation; k and j are time-relate...

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 thermal power unit prediction control strategy based on main stream pressure. The invention is to solve the problem of big energy releasing volatility of boilers of the current coal-fired units. According to the invention, the main stream pressure is adjusted by use of water supply flows; the water supply flows are divided into water supply feed-forward flows and feedback water supply flows; the water supply feed-forward flows are generated through intelligent feed-forward and the feedback water supply flows are generated through prediction control; and advanced control technology like the prediction control, the neural network control, the adaptive control and fuzzy control are applied to the optimization control of the thermal power units. Thus, on the basis that effectiveness of the current thermal power plant control system is ensured, through a prediction control strategy based on the main stream pressure, stability and anti-disturbance ability of thermal power unit control can be improved and the strategy has high practical application value.

Description

Technical field [0001] The invention relates to the field of power transmission control, in particular to a thermal power unit predictive control strategy based on main steam pressure, and is particularly suitable for transmission control of ultra-supercritical thermal power generating units. Background technique [0002] The control system of the generator set is essential to meet the peak and frequency regulation of the power grid and realize the economic operation of the generator set. However, the traditional coal-fired unit control system still faces the following problems: [0003] (1) Inaccurate boiler combustion control. After the coal pulverizer grinds the pulverized coal and enters the furnace, the heat generation of the pulverized coal is constantly changing, coupled with the insufficiency of the existing pulverizing system, the heat release in the boiler often fluctuates. [0004] (2) The dynamic characteristics of the pulverizing system that cannot be reproduced. The ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 赵琦胡建根罗志浩张明樊印龙张国立吴春潮左东明苏烨应明良
Owner HANGZHOU E ENERGY ELECTRIC POWER 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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com