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

Differential protection locking system and method for abnormal data acquisition of electronic mutual inductor

An electronic transformer and differential protection technology, which is used in emergency protection circuit devices, identification of patterns in signals, information technology support systems, etc. The problem of device malfunction, etc., can shorten the troubleshooting time, prevent malfunction, and ensure the effectiveness.

Active Publication Date: 2019-09-24
STATE GRID CORP OF CHINA +1
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the digital substation differential protection device has the functions of identification, synchronous inspection and breakpoint inspection for current and other data collection information, but it has no reliable judgment and analysis function for the current data with continuous sudden changes, which leads to the differential protection device using this current data Misoperation, how to screen the validity of the abnormal data output by the electronic transformer, and reliably block the differential protection according to the screening results, so as to avoid the misoperation of the protection device

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
  • Differential protection locking system and method for abnormal data acquisition of electronic mutual inductor
  • Differential protection locking system and method for abnormal data acquisition of electronic mutual inductor
  • Differential protection locking system and method for abnormal data acquisition of electronic mutual inductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] like Figure 1-4 As shown, the differential protection locking system with abnormal electronic transformer data collection includes

[0068] Abnormal data fault algorithm module 2, which is used to check the validity of each current data, and then output a blocking signal;

[0069] The protection operation main program algorithm module 24 is used to complete the differential protection operation, and then calculate and reach the preset action value of the differential protection to complete the start-up protection function;

[0070] The protection action output algorithm module 4 is used to complete the differential protection action output, and judges whether to open the action output by connecting with the output interface of the abnormal data fault algorithm module 2, and through the output interface with the main program algorithm module 24 of the protection operation connection to judge whether the differential protection is activated;

[0071] The output of the ...

Embodiment 2

[0086] like Figure 1-4 As shown, the method for using the electronic transformer data collection abnormality differential protection locking system described in Embodiment 1 includes the following steps:

[0087] S1. The merging unit 1 distributes the output signals of the electronic transformers in the substation to the current data of each channel through the abnormal data fault algorithm module 2; the current data of each channel passes through the abnormal data fault algorithm module 2 and the main program algorithm module 24 for protection operation is synchronized process;

[0088] S2. Input the results of the abnormal data fault algorithm module 2 and the protection operation main program algorithm module 24 into the protection action output algorithm module 4 for logical judgment, and then output through state decision.

[0089] The specific steps of the abnormal data failure algorithm in step S1 are as follows:

[0090] SA1, the abnormal data fault algorithm starts...

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 the field of digital substation relay protection, and particularly relates to a differential protection locking system and method for abnormal data acquisition of an electronic mutual inductor. The system comprises an abnormal data fault algorithm module, a protection operation main program algorithm module and a protection operation output algorithm module, wherein the protection operation output algorithm module is connected with an output interface of the abnormal data fault algorithm module to judge whether to open the action output or not, and is connected with an output interface of the protection operation main program algorithm module to judge whether to start differential protection or not; and the output end of a combination unit is connected with the input end of the abnormal data fault algorithm module and the protection operation main program algorithm module. The system has the advantages that various algorithm modules with independent operation ability, parallel execution and independent interfaces are constructed, and the differential protection can be completed through the combination of the modules so as to judge and lock the abnormal data.

Description

technical field [0001] The invention relates to the field of digital substation relay protection, in particular to a differential protection locking system and method for abnormal data collection of electronic transformers. Background technique [0002] Digital substation technology is the main technical direction of power grid development at present. Electronic transformers and digital optical fiber transmission technologies have replaced traditional electromagnetic transformers; electronic transformers collect primary current values, and the data is transmitted to the merged unit, and the merging unit forwards the data to each interval device. Starting from the transmission of the acquisition unit, the transmitted information is all digital, and the digital disturbance range breaks through the range of traditional analog transmission. [0003] At present, the digital substation differential protection device has the functions of label discrimination, synchronous inspectio...

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): H02H1/00H02H7/00
CPCH02H7/00H02H1/0007H02H1/0092G06F2218/04Y04S40/124
Inventor 苏建明徐广源朱德亮张东姚晖王文婷
Owner STATE GRID CORP OF CHINA
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