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

Pilot channel transmission device, optical fiber differential protective device and method

A technology of differential protection device and transmission device, applied in the field of optical fiber differential protection device, substation automation system, and longitudinal channel transmission device, which can solve the problem of different data transmission format and content, poor compatibility of protection device hardware, etc. problems, to achieve the effect of easy expansion, simple implementation, and improved compatibility

Inactive Publication Date: 2010-09-22
XJ ELECTRIC +1
View PDF2 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another object of the present invention is to provide a longitudinal channel optical fiber differential protection device to solve the problem that the optical fiber differential protection devices at both ends of the transmission line must use the same The manufacturer's device makes the hardware compatibility of the protection device poor

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
  • Pilot channel transmission device, optical fiber differential protective device and method
  • Pilot channel transmission device, optical fiber differential protective device and method
  • Pilot channel transmission device, optical fiber differential protective device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention is described by taking the SMV network and GOOSE network respectively networking mode of each interval in the digital substation as an example.

[0040] The longitudinal channel transmission device of the present invention is as figure 1shown, including:

[0041] The CPU plug-in is equipped with a process layer data processing unit and a longitudinal data processing unit. The process layer data processing unit is used for sending and receiving of process layer data in the substation and synchronous and interval layer data through the Ethernet interface. The longitudinal data processing unit is used for data sending and receiving processing with the longitudinal channel;

[0042] Optical-to-optical converters, used to convert serial electrical signal data into optical signals and send them to the external fiber channel or convert optical signals of fiber channel into serial electrical signals and input them to the CPU plug-in;

[0043] Protocol co...

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 a pilot channel transmission device, a pilot channel optical fiber differential protective device and a pilot channel optical fiber differential protective method, and belongs to the technical field of relay protection of electric power systems. The pilot channel optical fiber differential protective device comprises a merging unit, a pilot channel transmission device, differential protective devices, a fault wave recording device, an SMV network switch and a GOOSE network switch, wherein the GOOSE network switch is respectively connected with the pilot channel transmission device, the differential protective devices and the fault wave recording device; the merging unit, the differential protective devices, the pilot channel transmission device and the fault wave recording device are connected to the SMV network switch through an optical fiber interface; the pilot channel transmission device realizes the synchronous sampling of a home station and a transformer substation on the opposite side, and outputs sampling values of the transformer substation on the opposite side to the SMV network switch; and data with different formats is transformed by using a converter according to requirements, so that manufacturers of the differential protective devices at both ends of a transmission line do not need to be limited, and the compatibility of the protective devices is improved.

Description

technical field [0001] The invention relates to a longitudinal channel transmission device, an optical fiber differential protection device and a method, and belongs to the technical field of electric power system relay protection, especially a substation automation system based on the IEC61850 standard communication protocol in a digital substation using electronic current and voltage transformers in the application. Background technique [0002] Due to its simple protection principle and excellent performance characteristics, optical fiber current differential protection is increasingly used as the main protection of high-voltage and ultra-high-voltage transmission lines. The current differential protection requires that the current at each terminal involved in the calculation of the differential current must be sampled at the same time. The double-ended current involved in the calculation of transmission line differential protection is the secondary sampling value of 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
IPC IPC(8): H04L12/28H04L12/56H04L29/08H04L7/00H02H7/26
Inventor 张克元倪传坤廉海涛李文正李宝伟
Owner XJ ELECTRIC
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