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

Intelligent electronic device using transient fault information and relay protection method

A technology for intelligent electronic equipment and transient faults, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of difficulty in practical application, transient fault information stays in principle, prolong protection action time, etc., and achieve improved protection performance , Reduce equipment costs and operation and maintenance costs, improve protection performance and distance measurement accuracy

Inactive Publication Date: 2012-09-26
HENAN UNIV OF SCI & TECH
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the protection principle adopted by the relay protection devices widely used in the field is based on the power frequency electrical quantity, and filtering and other methods are usually used to eliminate the influence of the transient process on the protection, and the transient fault information is often regarded as Filtered out for harmful interference, which prolongs the operating time of the protection
However, the relay protection that only uses transient fault information is still at the stage of principle and algorithm research, and it is difficult to be practical

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
  • Intelligent electronic device using transient fault information and relay protection method
  • Intelligent electronic device using transient fault information and relay protection method
  • Intelligent electronic device using transient fault information and relay protection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Aiming at the problem that the transient fault information is difficult to use in relay protection, it is a practical way to combine the utilization of transient fault information with the mature principles of existing relay protection devices. effective solution.

[0027] The structure of the multifunctional integrated intelligent electronic device IED is as follows: figure 1 As shown, the intelligent electronic device IED includes a process layer communication module, a protection module, a distance measurement and wave recording module, a measurement and control module, a station control layer communication module and a man-machine interface module, integrating protection, distance measurement, wave recording and measurement and control, etc. All in one.

[0028] The application of intelligent electronic device IED in intelligent substation is as follows: figure 2 As shown, the IED belongs to the bay layer equipment, follows the IEC61850 standard, and uses Etherne...

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 an intelligent electronic device using transient fault information and a relay protection method. The intelligent electronic device comprises a distance-measuring / wave-recording module, a protection module and a measuring / controlling module, wherein the distance-measuring / wave-recording module is respectively in communication connection with a process layer and a station control layer through a process layer communication module and a station control layer communication module, and the protection module and the measuring / controlling module are respectively used for carrying out fault identification, line protection and fault distance-measuring / wave-recording according to transient fault information uploaded by the process layer; an effect that the modules carry out mutual communication and external communication is achieved mainly by adopting a 100 Mbps Ethernet, thereby realizing the high-speed exchange and parallel processing of data; and the protection module identifies the transient fault information such as fault direction, polarity and distance in an extremely short time after a fault occurs, and forms a pilot protection through adopting a 2-out-of-3 logic, thereby both realizing the rapid action of the protection function, and improving the reliability of the action. The intelligent electronic device and relay protection method disclosed by the invention achieve an effect of multifunction integration, and are applicable to the existing intelligent substations; and meanwhile, according to the invention, the protection performance and the distance-measuring accuracy are improved, and the device cost and the operation and maintenance costs are reduced.

Description

technical field [0001] The invention belongs to the technical field of power system automation, and relates to an intelligent electronic device and a relay protection method utilizing transient fault information. Background technique [0002] Reducing the action time of relay protection is one of the effective measures to increase the transmission power of transmission lines and enhance the transient stability of the system. Accurate identification, processing and utilization of transient fault information can correctly determine the fault in a very short time after the fault occurs, usually only 1~3ms, so the ultra-high-speed action of relay protection can be realized. However, the protection principle adopted by the relay protection devices widely used in the field is based on the power frequency electrical quantity, and filtering and other methods are usually used to eliminate the influence of the transient process on the protection, and the transient fault information is...

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): H02H7/26
Inventor 罗四倍贠保记
Owner HENAN UNIV OF SCI & TECH
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