Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A fast variable load control method for supercritical circulating fluidized bed boiler units

A circulating fluidized bed and supercritical boiler technology, which is applied in fluidized bed combustion equipment, combustion methods, fuels burned in a molten state, etc., can solve problems such as large energy storage, improve stability, enhance comprehensive competitiveness, The effect of convenient engineering application

Inactive Publication Date: 2019-03-01
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the energy storage on the fuel side of the CFB boiler is large

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
  • A fast variable load control method for supercritical circulating fluidized bed boiler units
  • A fast variable load control method for supercritical circulating fluidized bed boiler units
  • A fast variable load control method for supercritical circulating fluidized bed boiler units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for fast variable load control of a supercritical circulating fluidized bed boiler unit, such as figure 1 shown, including the following steps:

[0031] S1, after the AGC scheduling instruction is differentiated, it is multiplied by k 1 Get the control sub-signal a, the k 1 is the conversion proportional coefficient between the control sub-signal a and the main control of the boiler;

[0032] S2, the deviation signal between the actual value of the main steam pressure and the set value of the main steam pressure is output by the PID controller to obtain the control sub-signal b;

[0033] S3, the main steam pressure is processed by the differential link and multiplied by k 2 Get the control sub-signal c, the k 2 is the conversion proportional coefficient between the control sub-signal c and the main control of the boiler;

[0034] S4, main steam pressure, main steam pressure set value and steam turbine energy demand signal of machine front force structure ...

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 belongs to the technical field of optical control of power plant boiler load operation, and relates to a quick load change control method of a super-critical circulating fluidized bed boiler unit. The control method respectively processes a load acceleration signal, a main steam pressure feedback signal, a main steam pressure change rate feedforward signal, a steam turbine energy demand signal, and a deviation signal of the steam turbine energy demand signal and a super-critical boiler energy storage signal to obtain five corresponding control sub signals; and the five control sub signals are added to output to obtain a boiler main control instruction so as to control quick load change operation of the super-critical circulating fluidized bed boiler unit. The control method fully uses the boiler energy storage for improving the load adjusting quality of the super-critical CFB boiler unit, improves the quick load change capacity, and further improves the market competitiveness of super-critical CFB boilers.

Description

technical field [0001] The invention belongs to the technical field of power plant boiler load operation optimization control, and relates to a fast variable load control method for a supercritical circulating fluidized bed boiler unit. Background technique [0002] With the continuous increase of large-capacity units and the increasing automation of power grid dispatching, large-capacity units are required to operate in the mode of Automatic Generation Control (AGC), which puts forward new requirements for the rapid load change system of power plant units . [0003] my country's new energy power is growing rapidly, but the situation of wind power curtailment and photovoltaic curtailment is severe. According to data released by the National Energy Administration, in 2015, the curtailed wind power was 33.9 billion kWh, with an average wind curtailment rate of 15%, and the curtailed solar power was about 3.5 billion kWh, with an average curtailment rate of 9%. up to 31%. In...

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 Patents(China)
IPC IPC(8): F23C10/28
CPCF23C10/28
Inventor 高明明洪烽刘吉臻杨婷婷陈峰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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