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

Lightning stroke test source with composite fiber overhead earth wire

A technology of lightning strike test and overhead ground wire, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of expensive transformers and rectifiers, high voltage, increase test costs, etc., and meet the requirements of simple time control loop and ignition loop. The effect of low and saving equipment investment

Inactive Publication Date: 2008-07-16
CHINA ELECTRIC POWER RES INST +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This test scheme uses high voltage, large current, and long time, so the transformer and rectifier used as power supply are very expensive, which increases the cost of the test
[0026] Before 2003, due to the reason of the test equipment, the qualified OPGW lightning shock resistance simulation test could not be carried out in China. When domestic products need to do this test, usually the samples can only be sent to foreign countries, and the high test fee will be paid by foreign countries. Laboratory to complete the project test
[0027] After the newness search of electric power science and technology by the Guodian Information Center, the online retrieval of relevant databases and related websites at home and abroad, and the manual retrieval of the latest relevant periodicals in the collection of the Guodian Information Center, through comparison and analysis, it is concluded that the general implementation method abroad is to use High voltage shock source plus high voltage and high current, or high voltage shock source plus low voltage and high current, the OPGW lightning strike test source with the characteristics of the present invention has not been reported at home and abroad

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
  • Lightning stroke test source with composite fiber overhead earth wire
  • Lightning stroke test source with composite fiber overhead earth wire
  • Lightning stroke test source with composite fiber overhead earth wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] See Figure 2-1 and Figure 2-2:

[0044] The main circuit of the invention is composed of a six-phase compound half-wave rectifier circuit, and the main transformer is connected with resistance-capacitance absorption and thyristor commutation resistance-capacity absorption. After the circuit is connected to the AC power supply, it first passes through the main transformer, then passes through the diode rectifier circuit, voltage stabilizing circuit, filter circuit and current limiting circuit, and then passes through the control circuit and program setter to control the test time and output current value, so as to ensure The amount of charge transferred by the current meets the requirements of the standard.

[0045] in:

[0046] Air switch: used to isolate the three-phase incoming line from the external incoming line, which is convenient for maintenance;

[0047] Insurance (fuse): protect the main devices in the equipment (such as thyristor, rectifier diode, etc.);

...

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 present invention relates to power system and communication technology, and adopts continuous current 'C' scheme. The circuit includes voltage regulating thyristor circuit, main transformer, voltage grade change over switch, diode rectifier circuit, LC filter circuit, sync power source, control circuit, current limiting change over switch, program setting unit, etc. It has voltage regulation comprising primary thyristor and secondary rectifier, lightning period controlled through blocking and unblocking, sync power source for isolating triphase power supply and step-down to form pulse in the control circuit, and delay protection in the AC side within 4 sec. The present invention has simple test scheme, simple circuit, relax requirement of ignition loop and low cost.

Description

technical field [0001] The invention relates to the technical field of electric power system communication, in particular to a lightning strike test source for special electric power optical fiber composite overhead ground wire (OPGW). Background technique [0002] Optical fiber composite overhead ground wire (OPGW) not only has various advantages of optical fiber communication, but also plays the role of ground wire in power transmission lines. Among power optical cables, optical fiber composite overhead ground wire (OPGW) is highly trusted by users for its advanced manufacturing technology and high reliability. [0003] The overhead ground wire installed on the upper part of the overhead transmission line can be used as a lightning conductor to protect the wire from lightning damage, so it is more susceptible to lightning strikes. Some strands of overhead ground wires struck by lightning may break, which requires improving the lightning resistance level of overhead ground...

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): G01R31/00H02M7/155
Inventor 陈希孙德栋戚力彦赵大平
Owner CHINA ELECTRIC POWER RES INST
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