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

Multi-objective optimization method of initial pressure fixed value of uniform-admission turbine

A technology of multi-objective optimization and all-round steam intake, which is applied in the field of thermal optimization control to achieve the effect of improving adaptability and safety

Inactive Publication Date: 2012-07-25
上海迪吉特控制系统有限公司
View PDF7 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing unit control strategies have not fully considered these factors

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
  • Multi-objective optimization method of initial pressure fixed value of uniform-admission turbine
  • Multi-objective optimization method of initial pressure fixed value of uniform-admission turbine
  • Multi-objective optimization method of initial pressure fixed value of uniform-admission turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] Attached below figure 1 , figure 2 Let's describe in detail the embodiments of the present invention: this embodiment is implemented on the premise of the technical solution of the present invention and provides specific implementation methods and system structures, but the protection scope of the present invention is not limited to the following embodiments.

[0046] The method of the present invention has been implemented on a 350MW subcritical unit and a 1000MW ultra-supercritical unit respectively, wherein the boiler of the 350MW subcritical unit is the first full-combustion low calorific value gas tower once-through boiler in China, and the 1000MW ultra-supercritical The boiler of the unit is an ultra-supercritical parameter boiler designed and manufactured by Dongfang Boiler Factory using Hitachi Babcock technology. The steam turbines of the two units are full-circle steam-inlet and once-intermediate reheat condensing steam turbines produced by SAIC-Siemens, and...

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 multi-objective optimization method aiming at the initial pressure fixed value of a uniform-admission turbine and a DCS (Data Communication System) implementation method of the multi-objective optimization. The method synchronous considers the corrections of the working state of the turbine and the change of the running mode of a unit assembly to the initial pressure fixed value; the method is specifically composed of five control logical modules implemented by the DCS standard algorithm configuration; the five control logical modules consist of an initial value fixing module, a fixed value correcting module, a mode selecting module, a dynamic limiting module and a safety limiting module; wherein the fixed value correcting module is overlapped by a working state correcting part, an adjustment threshold correcting part and an offset correcting part respectively. At the same time, the adaptability and the safety of the optimization control strategy are improved by the asymmetric constraint of each unstable working state.

Description

technical field [0001] The invention relates to a thermal optimization control method, in particular to a multi-objective optimization and a DCS realization method for the fixed value of the initial pressure of a steam turbine with a full circumference. Background technique [0002] Large-scale power station steam turbines can be designed with two different steam distribution types: throttling regulation and nozzle regulation. Generally, the steam turbine unit with nozzle adjustment is recommended to adopt the fixed-slip-fixed operation mode, and the steam turbine unit with full-circumference throttling adjustment is mostly fixed-slip mode, and the sliding pressure operation mode should be adopted as far as possible to reduce the throttling loss. The same is true under rated load. [0003] Compared with the constant pressure operation, the feedwater pressure of the unit unit adopting the sliding pressure operation mode is lower, so the power consumption of the feedwater pum...

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): F01D17/00
Inventor 叶敏丁怡若邢跃沈维君张岩刘仕君
Owner 上海迪吉特控制系统有限公司
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