GIL expansion joint sound wave transmission modeling method

A modeling method and a technology of expansion joints, which are applied in the directions of instruments, design optimization/simulation, electrical digital data processing, etc., can solve problems such as differences in sensor sensitivity, and achieve the effects of reducing test costs, strong algorithm versatility, and strong pertinence

Active Publication Date: 2021-08-24
武汉朗德电气有限公司 +1
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the numerical simulation results are ideal results. The actual GIL ultrasonic fault location online monitoring system is often disturbed by on-site noise, and the sensitivity of the sensors used is also different.

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
  • GIL expansion joint sound wave transmission modeling method
  • GIL expansion joint sound wave transmission modeling method
  • GIL expansion joint sound wave transmission modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 As shown, the present invention provides a GIL expansion joint sound wave transmission modeling method, comprising the following steps:

[0036] Step 1: If figure 2 As shown in Fig. 1, the sound transmission characteristic test of GIL expansion joint unit is carried out on a section of GIL containing expansion joints, including the following steps:

[0037] Step 1-1: The standard percussion sound source is generated by striking the GIL shell with a piezoelectric impact hammer. Considering that the material of the GIL shell is aluminum alloy and the texture is relatively soft, the impact hammer uses a rubber hammer head and passes The signal conditioner is connected to the oscilloscope to output the excitation force signal;

[0038] Step 1-2: Output the acoustic vibration time-domain waveform signal through the sensor...

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 a sound wave transmission modeling method, belongs to the technical field of power monitoring, and particularly relates to a GIL expansion joint sound wave transmission modeling method. According to the method, a test and numerical simulation mode is combined, the influence of noise interference and sensor sensitivity on a result when a GIL ultrasonic fault positioning online monitoring system works can be considered, the attenuation and time delay of sound waves passing through different types of GIL expansion joints are calculated, the universality is high, and the method has wide engineering application prospects.

Description

technical field [0001] The invention relates to a sound wave transmission modeling method, which belongs to the technical field of electric power monitoring, in particular to a GIL expansion joint sound wave transmission modeling method. Background technique [0002] GIL is a transmission line with large transmission capacity, high reliability, and little interaction with the environment. Its overall length is generally long, and it is usually installed in a segmented and modular manner. When an insulation fault occurs, how to quickly and accurately locate the fault location, and then replace the damaged pipe section in time without dismantling other pipe sections has become a hot topic in GIL operation and maintenance. [0003] When there is an expansion joint structure between the sensor and the fault point, the existing GIL ultrasonic fault location on-line monitoring method has problems such as low positioning result accuracy and poor system reliability, because there ar...

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): G06F30/23G06F119/14
CPCG06F30/23G06F2119/14
Inventor 陈勇黄文雄郝乾王永君杜志叶郝兆扬熊志云袁攀张磊刘静
Owner 武汉朗德电气有限公司
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