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

Optical signal collecting and on-line monitoring method for electric power equipment internal failure

A technology for internal faults and electrical equipment, applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve problems such as inability to distinguish optical signals, misjudgment of discharge faults, errors, etc., to achieve easy promotion, reduce equipment damage, The effect of low cost

Inactive Publication Date: 2004-12-15
孙艺夫
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The literature has recorded a device that collects optical signals to monitor discharge faults, but the device cannot distinguish the detected optical signals into optical signals generated by overheating faults and optical signals generated by discharge faults, so the type of fault cannot be judged when the optical signal is generated. Simply diagnosing the discharge fault will be wrong, and judging the strength of the discharge fault based on the measured signal value will also cause misjudgment, because the optical signal generated by the overheating fault is likely to interfere with the measurement results

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
  • Optical signal collecting and on-line monitoring method for electric power equipment internal failure
  • Optical signal collecting and on-line monitoring method for electric power equipment internal failure
  • Optical signal collecting and on-line monitoring method for electric power equipment internal failure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Step 1. Use optical fibers to collect optical signals generated due to failures inside the airtight equipment: pre-arrange optical fibers (groups) 2 inside the airtight power equipment 1, especially the ones with good light transmission and insulation performance in the near-infrared to near-ultraviolet wavelength region The outer sheath of the quartz fiber is made of polytetrafluoroethylene material or epoxy resin material with a temperature resistance of more than 100°C, long-term stability in the insulating medium (such as transformer oil) and good insulation performance, so that the input of the fiber The end faces the monitored part, and the fiber group composed of multiple optical fibers can be arranged according to the needs to monitor various fault-prone parts inside the equipment. In order to improve the optical signal receiving effect of the optical fiber, a lens can be added in front of the input end, such as connecting a hemispherical lens to the optical fibe...

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 light signal the fault part inside closed electric power equipment produces is acquired with optical fiber, signal distinguished and amplified in the signal distinguishing and amplifying circuit to separate discharge signal and / or overheat signal; and the type, degree and position of the fault inside the equipment are judged in the signal processing circuit based on the signal type, size and distribution. The said method is simple, practical, accurate and reliable, and may be used in the in-situ monitoring of main transformer equipment.

Description

Technical field: [0001] The invention belongs to the technical field of power equipment detection, and further relates to the online monitoring of internal faults of power equipment such as airtight transformers and switches under operating conditions. Background technique: [0002] It is an important condition to ensure the safety of the power grid to grasp the operation status of the power equipment and find out the internal faults of the equipment in time. At present, most of the existing on-line monitoring methods are based on the collection of electrical signals, acoustic signals and medium decomposition signals to realize online monitoring. Because power equipment works in high voltage, strong electromagnetic field and large vibration and noise environment, it is often difficult to accurately separate the electrical and acoustic signals of discharge pulses generated by faults from complex interference, resulting in complex detection equipment and poor reliability; The...

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): G01J3/28G01R31/00H02H3/22
Inventor 孙艺夫
Owner 孙艺夫
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