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

Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing

A technology for automatic reclosing and transmission lines, which is applied to circuit devices, emergency protection circuit devices, emergency protection devices for automatic disconnection, etc., and can solve problems such as misjudgment and beating frequency

Inactive Publication Date: 2013-01-09
SHENYANG POLYTECHNIC UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle of this method is simple, but due to the influence of the shunt reactor, there will be a beat frequency phenomenon when the transient fault is switched off, and there is a possibility of misjudgment

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
  • Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing
  • Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing
  • Method and device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0043] The single-phase automatic reclosing control device for UHV transmission lines in this embodiment, such as figure 1 As shown, including main control module, voltage acquisition module, input circuit, output circuit, display module, keys, printer interface and network interface;

[0044]The output end of the voltage acquisition module is connected to the input end of the main control module, the output end of the input circuit is connected to the input end of the main control module, the output end of the main control module is connected to the input end of the output circuit, and the input end of the display module is connected to The output end of the main control module and the output end of the button are connected to the input end of the main control module, and the output end of the main control module is respectively connecte...

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 method and a device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing. The device comprises a master control module, a voltage acquisition module, a switching-in circuit, a switching-out circuit, a display module, a key, a printer interface and a network interface. An output end of the voltage acquisition module and an output end of the switching-in circuit are connected with an input end of the master control module, an output end of the master control module is connected with an input end of the switching-out circuit, an input end of the display is connected with the output end of the master control module, an output end of the key is connected with the input end of the master control module, and the output end of the master control module is respectively connected with the printer interface and the network interface. The method and the device for controlling ultrahigh-voltage transmission line single-phase automatic reclosing effectively solve the problem of single-phase adaptive reclosing fault recognition and the problem of misjudgment caused by beat frequency resonance when fault types are judged by the ultrahigh-voltage transmission line with parallel reactors according to voltage. In addition, the control device is simple, reliability and accuracy of judgment results are improved, and reclosing operations are precisely controlled.

Description

technical field [0001] The invention relates to the technical field of automatic reclosing control of power system transmission lines, in particular to a single-phase automatic reclosing control device and method for UHV transmission lines. Background technique [0002] With the development of the economy, the requirements for the transmission capacity of the power grid continue to increase. EHV / UHV transmission will become the main method of long-distance and large-capacity transmission in the future. From the results of operation statistics and records of EHV transmission lines at home and abroad, single-phase ground faults The failure rate is as high as 90%, among which transient faults account for about 80%. In order to improve the reliability and stability of system operation, single-phase automatic reclosing is widely used. However, the single-phase adaptive reclosing action has a certain blindness. When it recloses on a permanent fault, the power system will suffer f...

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): H02H3/06H02H7/26
Inventor 林莘谢寅志徐建源
Owner SHENYANG POLYTECHNIC UNIV
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