Transient wave recording indicator

A technology of indicator and wave recording, which is applied in the direction of fault location and fault detection according to conductor type, etc., can solve the problems of low measurement current accuracy, low performance of current transformer, weak current signal capability of distribution network lines, etc. The effect of strong electricity

Active Publication Date: 2017-09-29
HEFEI COMEON ELECTRONICS TECH
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages: the performance of the current transformer in the measurement of linearity, bandwidth, and transient response is not high, especially when t

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
  • Transient wave recording indicator
  • Transient wave recording indicator
  • Transient wave recording indicator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] see Figure 1-36 , the present invention provides a technical solution:

[0053] A transient wave recording indicator, including MSP430FR697xPM / RGC, a current and electric field acquisition unit, and an external power-taking and internal power supply unit. The current and electric field acquisition unit includes an electronic current collector, and one end of the electronic current collector is connected to an operational amplifier LMV611 U (3, 4) pins...

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 relates to the technical field of power supply line fault detection, in particular to a transient wave recording indicator. The transient wave recording indicator comprises an MSP430FR697xPM/RGC, a current and electric field collection unit and an external power taking and internal power supply unit, wherein the current and electric field acquisition unit comprises an electronic current collector, and a rectifier bridge is connected with an overhead line through a high-magnetic conductivity CT power taking sensor. The current and electric field collection unit has a strong online power taking ability, and normal work in the case of power taking current of 5A can be realized; due to the external power taking and internal power supply unit, +/-1% high-precision measurement current can be realized; three-phase synchronous timing precision can reach +/- 50 mus; accurate positioning of grounding fault of a small-current grounding system, particularly, transient grounding fault, complex intermittent grounding fault and high-resistance grounding fault can be realized; backtracking inversion is carried out on a complex fault process through wave recording waveforms, and a strong basis is provided for fault analysis; and early warning is carried out in advance when the line is in an abnormal state.

Description

technical field [0001] The invention relates to the technical field of power supply line fault detection, in particular to a transient wave recording indicator. Background technique [0002] The two main forms of distribution network lines are: cable lines laid underground and overhead lines erected with poles and towers. For the distribution network lines in big cities, especially in the main urban area, the underground cables are basically used, and the grounding method is usually adopted through a small resistance. In this way, when a single-phase ground fault occurs, a large continuous power frequency (50Hz) fault can be generated. Phase current and power frequency zero-sequence current, ground fault detection and location are relatively easy. For the distribution network lines in non-main urban areas of large cities, small and medium-sized cities, urban-rural fringe areas, and vast rural areas and pastoral areas, the overhead line distribution network is still the main...

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): G01R31/08
CPCG01R31/086
Inventor 赵海清
Owner HEFEI COMEON ELECTRONICS TECH
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