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

Cable and overhead line mixed line double-end traveling wave fault location algorithm based on piecewise compensation principle

A technology of hybrid line and compensation principle, applied in the direction of fault location, etc., can solve problems such as complex error of ranging algorithm

Inactive Publication Date: 2014-08-06
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of complex traveling wave fault location algorithm and large error of multi-section hybrid line, and provide a double-terminal traveling wave fault location algorithm based on the principle of segment compensation for cable overhead line hybrid line

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
  • Cable and overhead line mixed line double-end traveling wave fault location algorithm based on piecewise compensation principle
  • Cable and overhead line mixed line double-end traveling wave fault location algorithm based on piecewise compensation principle
  • Cable and overhead line mixed line double-end traveling wave fault location algorithm based on piecewise compensation principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention proposes a double-terminal traveling wave fault location algorithm based on the principle of section compensation for cable overhead line hybrid lines. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The detection principle of the present invention is to determine the fault section by comparing the time difference between the initial traveling wave surge of the fault reaching the measuring points on both sides of the line and the time difference between the traveling waves at each connection point of the hybrid line propagating to the measuring points on both sides of the line, and then compensate by time and distance , expressing the fault distance as the sum of the distance from the end point of the fault section to the measurement point and the vector distance from the fault point to the end point.

[0026] Analysis of the embodiment: an example diagram of the system 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 discloses a cable and overhead line mixed line double-end traveling wave fault location algorithm based on the piecewise compensation principle. According to the cable and overhead line mixed line double-end traveling wave fault location algorithm, the difference between the time when a fault initial traveling wave surge reaches a measuring point on one side of a line and the time when the fault initial traveling wave surge reaches a measuring point on the other side of the line is compared with the difference between the time when traveling wave propagation at each connecting point of the mixed line reaches the measuring point on one side of the line and the time when the traveling wave propagation at each connecting point of the mixed line reaches the measuring point on the other side of the line to determine a fault section, and then time and distance compensation is conducted to express the fault distance as the sum of the distance from the endpoint of the fault section to the measuring point and the vector distance from the fault point to the endpoint. Compared with an existing mixed line traveling wave fault location method, the cable and overhead line mixed line double-end traveling wave fault location algorithm is higher in adaptability, clearer in concept, easier to implement, and unified with a traditional uniform transmission line two-end fault location algorithm in form and physical meaning.

Description

technical field [0001] The invention relates to the technical field of protection and control of a distribution network and the technical field of line fault detection, in particular to a method for measuring traveling wave fault distance of an overhead wire and cable hybrid line. Background technique [0002] The traveling wave fault location technology mainly utilizes the voltage and current traveling wave signals generated during the fault, according to the time difference between the traveling wave between the measurement point and the fault point (single-ended method) or the time difference between the initial traveling wave arriving at both ends of the line (double-ended method) to measure the fault distance. It is not affected by factors such as fault type, fault point transition resistance, voltage transformer (TV) and current transformer (TA) transmission error, etc. It has obvious technical advantages. After more than ten years of development, traveling wave faul...

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
Inventor 薛永端李乐徐丙垠
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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