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

Method for Evaluating Lightning Trip Rate of Electrified Railway in Single Line Embankment Section

A technology for electrified railway and lightning strike trip rate, which is applied in the direction of measuring electricity, measuring electrical variables, forecasting, etc., and can solve the problems of electrified railway lightning protection design and lightning protection transformation difficulties

Inactive Publication Date: 2017-04-12
SOUTHWEST JIAOTONG UNIV +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the lightning strike types of electrified railway catenary are divided into three types: induction lightning (lightning strikes the ground), counterattack (lightning strikes the return line, the top of the pillar and other grounded parts), and shielding strikes (lightning strikes the catenary cable, contact line). The accurate calculation of the three lightning tripping rates of railways has brought great difficulties to the targeted lightning protection design and lightning protection transformation of my country's electrified railways.

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 Trip Rate of Electrified Railway in Single Line Embankment Section
  • Method for Evaluating Lightning Trip Rate of Electrified Railway in Single Line Embankment Section
  • Method for Evaluating Lightning Trip Rate of Electrified Railway in Single Line Embankment Section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0075] The technical solution of the present invention will be further described below by way of examples in conjunction with accompanying drawing 1 .

[0076] The first step is to obtain line parameters. For a railway single-line embankment section, the distance between the return line and the ground is 8m, the height of the catenary cable to the ground is 7.8m, the distance between the catenary cable and the inner side of the pillar is 3m, the distance between the return line and the inner side of the pillar is 0.8m, and the radius of the return line is 6.25mm. Insulator U50% discharge voltage 270kV, lightning current wave head time 2.6μs, lightning day 40 days, average operating voltage gradient of insulator string 20.36kV, pillar grounding resistance 10Ω, pillar equivalent inductance 6.72μH, adjacent return lines on both sides of the pillar The inductance parallel value is 36.85μH, and the corona correction coefficient is 1.15.

[0077] Calculation season and a 0 =10,b...

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 measuring the lightning strike tripping rate of an electrified railway single-line embankment section catenary tripping rate. The method includes: first step, obtaining electrified railway line parameters; second step, calculating the lightning strike type boundary point coordinates, and determining the catenary The influence area of ​​different lightning strike types; the third step is to calculate the tripping rate of induced lightning; the fourth step is to calculate the counterattack tripping rate; the fifth step is to calculate the shielding tripping rate; the sixth step is to determine the total tripping rate. This method is convenient to calculate, and solves the problem of difficult calculation of lightning tripping rate of electrified railway.

Description

technical field [0001] The present invention relates to a method for measuring the lightning strike tripping rate of catenary in single embankment section of electrified railway, in particular to a method for calculating the tripping rate of catenary induced lightning strike, counterattack and shielding strike in embankment section of electrified railway based on an electrical geometric model The method is suitable for lightning protection design and lightning protection transformation of electrified railways, and belongs to the field of railway system overvoltage. Background technique [0002] The lightning tripping of the traction power supply system has seriously affected the safe and stable operation of my country's electrified railways. In order to ensure the reliability of train operation, accurately calculate the lightning tripping rate of the catenary power supply line, and evaluate its impact on the reliability of traction power supply, it is often necessary to dete...

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 Patents(China)
IPC IPC(8): G01R31/00G06Q10/04G06Q50/06
Inventor 曹晓斌吴广宁李瑞芳熊万亮朱军高波周利军高国强
Owner SOUTHWEST JIAOTONG UNIV
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