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

Relay protection logical equation analyzing method

A logic equation and relay protection technology, which is applied in the direction of emergency protection circuit devices, electrical components, program control design, etc., can solve the problems of strict time requirements, delay in the promotion of programmable relay protection, etc., to achieve fast execution speed, The effect of meeting strong real-time requirements and simplifying the workload of on-site maintenance

Inactive Publication Date: 2011-07-13
GUANGZHOU TOSHIBA BAIYUN ELECTRICAL EQUIP
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the execution of logical equation text information requires complex processing such as lexical analysis, syntax analysis, compilation and execution.
The relay protection is a strong real-time system, and a delay of a few milliseconds can cause a large-scale power outage, which is very demanding on time.
Therefore, programmable relay protection has not been popularized for a long time

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
  • Relay protection logical equation analyzing method
  • Relay protection logical equation analyzing method
  • Relay protection logical equation analyzing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] In order to realize programmable relay protection, the present invention adopts a method of constructing logic equations in the field of relay protection. Logical equations are essentially a series of Boolean expressions whose basic elements are Boolean variables and various logical operators. In order to make full use of logic equations to realize the programmability of relay protection, it is necessary to abstract various relay protection concepts into Boolean variables. For the convenience of subsequent description, these abstract Boolean variables are called relay words, and the Boolean expressions composed of relay words are called logic equations.

[0051] Whole software system structure of the present invention sees figure 1 , mainly includes three parts: relay word database, parsing module and execution module. The relay word database is used to manage all abstract relay words, not only for users to write logic equations, but also for unifying the correspondin...

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 discloses a relay protection logical equation analyzing method which comprises the following steps of: writing a logical equation according to a relay word database; analyzing morphology and the logical equation into a node structure; detecting the syntax error in the equation through virtual execution; establishing an execution unit module; generating a logical equation parameter; executing the logical equation by a relay protecting device according to the logical equation parameter; and triggering an outlet according to the execution result of the logical equation. In the relay protection logical equation analyzing method, the logical equation is established according to relay words, and analyzed and executed by an analyzing module and an executing module; and the outlet of a relay protector is triggered by using the execution result of the logical equation. The logical equation analyzing method has high executing speed and meets the high real-time requirement of the relay protection system; and based on the programmable relay protector developed by the method not only reduces the models of the relay protector, but also simplifies the working amount of maintenance on site.

Description

technical field [0001] The invention relates to a method for realizing relay protection, in particular to a method for analyzing logical equations of relay protection. Background technique [0002] With the rapid development of power system relay protection, the programmable requirements for relay protection are becoming more and more urgent. Traditional relay protection generally designs different device models according to functions, such as: capacitor protection, feeder protection, electric protection, standby automatic switching, etc.; and the needs of users are ever-changing, often requiring various complex blocking conditions, standby automatic switching schemes, etc. In order to meet the above requirements, each relay protection manufacturer has a wide variety of relay protection models, and the program versions of various models are also very confusing. The traditional design concept not only requires a lot of maintenance work, but also has many hidden dangers on si...

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): G06F9/305H02H7/00
Inventor 张马龙常宝波常伦凯
Owner GUANGZHOU TOSHIBA BAIYUN ELECTRICAL EQUIP
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