Lightning overvoltage fault point positioning method

A lightning strike overvoltage and positioning method technology, which is applied in the direction of fault location, fault detection according to conductor type, and electrical measurement, can solve problems such as low accuracy and affect the efficiency of maintenance operations, achieve high positioning accuracy, improve power supply reliability and intelligence The effect of improving the level of automation and shortening the troubleshooting time

Active Publication Date: 2020-06-05
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This application provides a method for locating lightning overvoltage fault points to solve the problems of low accuracy and affecting the efficiency of maintenance operations in the current lightning overvoltage fault point locating method

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
  • Lightning overvoltage fault point positioning method
  • Lightning overvoltage fault point positioning method
  • Lightning overvoltage fault point positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0048] see figure 1 , is a schematic diagram of the application scenario of the embodiment of the present application; combined with image 3 , is a flowchart of the embodiment of the present application. It is convenient to understand the technical solutions of the following embodiments of the present application.

[0049] A method for locating a lightning strike overvoltage fault point provided by the present application inc...

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 lightning positioning of power transmission and distribution lines of power systems, and particularly relates to a lightning overvoltage fault point positioning method. In an electric power system, a positioning method for generating a fault after a power transmission and distribution line is struck by lightning has the problem of low measurement precision. The invention provides a lightning overvoltage fault positioning method. A plurality of distributed voltage monitoring sensors are used for monitoring a line state, when the sensors judge thatlightning overvoltage occurs, the monitored voltage characteristic data are uploaded to a background positioning host, the acquired data are extracted and analyzed by the background host, and the lightning strike point position of the line is judged by utilizing the phase transmission characteristic of a first overvoltage signal generated when the line is subjected to lightning strike relative tothe power frequency voltage of the system in each period. The lightning stroke position of the power transmission and distribution line is accurately positioned by combining pulse signal injection and lightning stroke overvoltage phase transmission and transformation characteristics.

Description

technical field [0001] The present application relates to the technical field of lightning location for power transmission and distribution lines in power systems, and in particular to a method for locating lightning overvoltage fault points. Background technique [0002] In the power system, transmission and distribution lines, as an important part of the power grid system, have received more and more attention and attention in recent years with the development of smart grid construction. Installing various condition monitoring equipment on transmission line towers is the basic work of building intelligent transmission lines. At present, the construction of power grids in various places also regards it as the main development direction. [0003] Lightning is an important factor that endangers the safety of power systems. Lightning is extremely harmful to the safe operation of transmission lines, often causing insulator flashover accidents. Lightning strikes on transmission ...

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): G01R31/08
CPCG01R31/085G01R31/088
Inventor 刘红文张恭源柴晨超张扬
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER 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