Steam turbine flow characteristic optimization method based on full-stroke modeling

A technology of flow characteristics and optimization methods, which is applied in the direction of flow control, flow control of electric devices, mechanical equipment, etc., and can solve problems such as the inability to realize the optimization of flow characteristics in the flow command interval

Active Publication Date: 2020-08-07
GUODIAN SCI & TECH RES INST
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing methods, whether through test methods, on-site trial methods, or using historical data mining, are all subject to the load range of the actual operation of the unit, and can only achi

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
  • Steam turbine flow characteristic optimization method based on full-stroke modeling
  • Steam turbine flow characteristic optimization method based on full-stroke modeling
  • Steam turbine flow characteristic optimization method based on full-stroke modeling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A kind of steam turbine flow characteristic optimization method based on full-stroke modeling of the present invention comprises the following steps:

[0090] Step 1: Propose an improved steam turbine high-profile valve flow characteristic test to obtain the total flow command D(t), the main steam pressure P T (t), regulating stage pressure P 1 (t), each door adjustment instruction D i (t), where D(t) represents the total flow command at time t, and D(t)∈[0,100], D i (t) represents the opening command of the i-th high-profile door at time t, D i (t) ∈ [0, 100], see Section 1 for details of the test;

[0091]Step 2: Use filtering technology, clustering algorithm, flow calculation, data per unit and other methods to process data, see Section 2 for details;

[0092] Step 3: Propose a calculation method of actual flow rate, and calculate the flow distribution coefficient of the control valve in combination with the test, and establish the mathematical modeling of the st...

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 provides a steam turbine flow characteristic optimization method based on full-stroke modeling. The method is based on an improved turbine high control valve flow characteristic test. Anactual flow calculation method is provided, a filtering technology and a clustering algorithm are applied, a full-stroke mathematical model of a turbine flow instruction, a control valve opening degree and actual flow is established by means of a piecewise linear function, and an accurate theoretical basis is provided for turbine high control valve flow characteristic function optimization, overlapping degree adjustment, valve sequence modification and the like. The method has the advantages that the full-stroke flow characteristic model within the total instruction range of (0-100)% flow canbe accurately established, and on the basis, optimization within the total instruction range is achieved. Through repeated test verification and operation effect display after optimization of multiple units, the turbine flow characteristic function optimization method based on flow total instruction full-stroke modeling has a good effect in practical application.

Description

Technical field: [0001] The invention is directly applied to the field of parameter optimization of a steam turbine DEH (digital electro-hydraulic control) system in a thermal power plant, and relates to a steam turbine flow characteristic optimization method based on full stroke modeling. Based on the improved test of the flow characteristics of the high-profile steam turbine valve, a calculation method for the actual flow rate is proposed, using filtering technology and clustering algorithm, and using piecewise linear functions to establish a full-stroke mathematical model of the steam turbine flow command, valve opening and actual flow rate , to provide an accurate theoretical basis for the optimization of the flow characteristic function of the steam turbine high-profile valve, the adjustment of the overlap degree, and the modification of the valve sequence. Background technique: [0002] The steam turbine flow characteristic is to describe the corresponding relationship...

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): G05B13/04G05D7/06F01D17/10F17D3/01F17D5/00
CPCG05B13/042G05D7/0617F01D17/10F17D3/01F17D5/00Y02E60/00
Inventor 尚星宇李建王瑞王东柳磊马国伟马彪
Owner GUODIAN SCI & TECH RES INST
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