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

A control method and control device for guide vane opening of a water turbine

A guide vane opening and water turbine technology, which is applied in the control algorithm type, safety device, mechanical equipment, etc., can solve the problems of low accuracy of servomotor stroke control, high guide vane opening setting value and final deviation of its feedback value.

Active Publication Date: 2019-11-08
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a method and a control device for controlling the opening of the guide vane of a hydraulic turbine, which solves the problems in the prior art that when the output voltage is small, the final deviation between the fixed value of the guide vane opening and its feedback value is relatively high, and the stroke control of the servomotor Problems with lower accuracy

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 control method and control device for guide vane opening of a water turbine
  • A control method and control device for guide vane opening of a water turbine
  • A control method and control device for guide vane opening of a water turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The 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 shall fall within the protection scope of the present invention.

[0057] In the process of industrial automation control, when monitoring data, the servomotor is used for data collection, and the relevant parameters of the servomotor stroke are collected, and then the monitoring data is transmitted to the PID control system for processing, and finally the working data is displayed on the monitoring sys...

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 control method and control device for the guide vane opening of a water turbine. Integral output amplitude limits (DB1,DB2) are determined through a water turbine speed governor disturbance test; servomotor stroke parameters are collected, and a feedback value H is determined according to the servomotor stroke parameters; a guide vane opening fixed value M is input, and acontrol voltage output value u is determined through a series integral control standard; the feedback value H and the guide vane opening fixed value are substituted into an integral zero clearing control standard for judgment, and whether integral zero clearing is needed or not is determined according to a judgment result; and the control voltage output value u is transmitted to a data transmission control unit, and a servomotor is moved. Thus, effective output of control voltage can be improved, and when the output voltage is too small, the accuracy of guide vane opening control can be improved, the stroke speed of the servomotor is controlled, and the stability of the guide vane opening is ensured.

Description

technical field [0001] The invention relates to the field of automatic control of hydropower stations, in particular to a method and a control device for controlling the opening of guide vanes of a water turbine. Background technique [0002] A hydroelectric generating set consists of a hydroturbine, a connecting shaft and a generator. The key to controlling its speed and power lies in the adjustment of the output of the hydroturbine. The control and adjustment of the speed and output of the water turbine are related to the opening of the guide vane. When the water turbine is started, the guide vane of the water turbine is opened, and the water at a high place passes through the guide vane of the water turbine and pushes the impeller turntable of the water turbine. By converting the potential energy into mechanical energy, it drives power generation. The machine rotates and converts the mechanical energy into the rotational kinetic energy of the unit. When the hydro-generat...

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): F03B15/06
CPCF03B15/06F05B2270/706Y02E10/20
Inventor 周鑫荣红和鹏何鑫
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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