Adaptive cascade direction interlocking relaying method based on GOOSE (Generic Object Oriented Substation Event)

A relay protection and self-adaptive technology, applied in the direction of emergency protection circuit devices, electrical components, etc., to prevent misoperation or refusal to operate, reduce the scope of power outages, and facilitate interoperability

Active Publication Date: 2013-04-03
SHANGHAI JIAO TONG UNIV +1
View PDF3 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no good solution for the failure of the low-voltage side busbar of

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
  • Adaptive cascade direction interlocking relaying method based on GOOSE (Generic Object Oriented Substation Event)
  • Adaptive cascade direction interlocking relaying method based on GOOSE (Generic Object Oriented Substation Event)
  • Adaptive cascade direction interlocking relaying method based on GOOSE (Generic Object Oriented Substation Event)

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example

[0035] An adaptive cascading direction blocking relay protection method based on GOOSE, which considers the basic characteristics of intelligent distribution network, and adaptively adjusts the blocking direction according to the directional relationship between fault current and blocking signal, so as to achieve accurate coordination and selectivity of protection. The purpose of isolating faults is to form a simple and practical intelligent distribution network protection system. The intelligent distribution network is provided with multiple sets of protection units (Protective Relay, PR), and the multiple sets of protection units transmit blocking signals through the GOOSE protocol, such as: figure 1 As shown, each set of protection units (PR) includes a directional element, an overcurrent element, a directional comparator, and two groups and four GOOSE virtual terminals. Among them, OUT1 and OUT2 are virtual terminals for sending, and IN1 and IN2 are virtu...

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 adaptive cascade direction interlocking relaying method based on GOOSE (Generic Object Oriented Substation Event), which comprises the following steps: 1) initial interlocking directions of protective relays are set according to an initial interlocking direction tuning rule; 2) a directional element judges the direction of a current fault current which is compared with the initial interlocking directions by a direction comparator to judge whether the directions of two parts are the same, if yes, the step 3) is carried out, if not, IN2 is gated, and a interlocking signal is output to OUT2; 3) the direction comparator gates IN1, and outputs the interlocking signal to the OUT1 and the direction of the output signal is opposite from the initial interlocking direction at this time; 4) a receiving virtual terminal judges whether the interlocking signal is received, if yes, the interlocking is carried, if not, the step 5) is carried out; and 5) an over-current element judges whether the current fault current exceeds a local over-current protection starting fixed value, if yes, a trip signal is sent. In comparison with the prior art, the method has the advantages that the safe and reliable operation of a system is ensured and applicability is good.

Description

technical field [0001] The invention relates to a protection method of an intelligent distribution network, in particular to a GOOSE-based adaptive cascading direction blocking relay protection method. Background technique [0002] The traditional distribution network adopts a radial topology and is powered by a single-side power supply. Its relay protection is also designed based on this architecture. [0003] However, for a smart distribution network connected to a large number of distributed generation (Distributed Generation, DG), the operating characteristics will change significantly, such as bidirectional power flow, ring power supply, and changes in short-circuit current characteristics. Since the fault current flows into both ends of the fault point, it will cause the fault current to flow through the protection of various places along the way, which brings great challenges to the existing protection system. [0004] According to whether the protection principle de...

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): H02H7/26
Inventor 张沛超林震宇方陈李鑫包海龙张宇
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap