Method for evaluating lightning protection effective size coefficients of horizontal grounding body at different temperatures

A technology of horizontal grounding body and effective size, which is applied in the direction of temperature control, temperature control by electric method, and contact material connection, so as to achieve the effect of simple test method and improved accuracy

Active Publication Date: 2020-11-24
SOUTHWEST JIAOTONG UNIV
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on the effective size factor of lightning protection of horizontal grounding body at different temperatures in China, so there is an urgent need for a method to test and evaluate the effective size factor of lightning pr

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 for evaluating lightning protection effective size coefficients of horizontal grounding body at different temperatures
  • Method for evaluating lightning protection effective size coefficients of horizontal grounding body at different temperatures
  • Method for evaluating lightning protection effective size coefficients of horizontal grounding body at different temperatures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. A method for evaluating the effective size factor of lightning protection of a horizontal grounding body at different temperatures. The specific implementation method includes the following steps:

[0028] Step 1: Build a temperature control test device for lightning protection effective size coefficient of horizontal grounding body, such as figure 1 As shown, it includes the test host computer (1), voltage signal line (2), temperature signal line (3), transient voltage injection line (4), temperature sensing connection line (5), temperature adjustment connection line (6 ), injection electrode interface (7), injection copper electrode (8), horizontal grounding body (9), test soil temperature control device (10), homogeneous soil (11), transient voltage generation device (12), No. 1 Temperature sensor (21), No. 2 temperature sensor (22), No. 3...

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 for evaluating lightning protection effective size coefficients of a horizontal grounding body at different temperatures, and the method comprises the steps of building a horizontal grounding body lightning protection effective size coefficient temperature control test device according to the evaluation method; according to the evaluation step, setting the test thermodynamic temperature through a test upper computer, and performing temperature adjustment on homogeneous soil around the horizontal grounding body through a temperature control test device; injecting transient voltage into the horizontal grounding body through a transient voltage generation device, and measuring wave head time of the injected transient voltage; and calculating and evaluating thelightning protection effective size coefficient of the horizontal grounding body according to the wave head time of the injected transient voltage and the test thermodynamic temperature. According tothe invention, the diffusion process of the transient current along the horizontal grounding body at different soil temperatures can be effectively simulated, the test precision is improved through real-time temperature control, and the lightning protection effective size coefficient of the horizontal grounding body can be accurately and effectively evaluated.

Description

technical field [0001] The invention belongs to the technical field of electric power system grounding, in particular to a method for evaluating the lightning protection effective size coefficient of a horizontal grounding body at different temperatures. Background technique [0002] Lightning is one of the most important causes of power outages or damage to power system equipment. Therefore, it is necessary to improve the lightning protection device and develop a more accurate prediction method for the lightning protection performance of the grounding system. For this reason, we can design and use different configurations of the grounding system to minimize damage to electrical equipment and protect personal safety. Most of the short-circuit current or lightning current is introduced into the earth to ensure the safe and stable operation of the equipment and improve the quality of electrical services. [0003] As demonstrated by many studies, at low frequency currents, esp...

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): G06F30/20G05D23/19H01R4/66
CPCG05D23/1931G06F30/20H01R4/66
Inventor 周利军胡琛刘欣彤
Owner SOUTHWEST JIAOTONG UNIV
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