Circuit breaker tripping and closing loop all-condition monitoring circuit

A closing circuit and tripping circuit technology, applied in the field of circuit breaker tripping and closing circuit full working condition monitoring circuit, can solve the problems of lack of monitoring function, inability to monitor tripping and closing coil interlocking circuit, etc., to improve work efficiency and equipment reliability, accurate judgment of fault range, and simple design.

Pending Publication Date: 2020-04-24
CHINA YANGTZE POWER
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) It can only monitor whether the tripping and closing coil is disconnected, but it does not have the monitoring function for whether there is an inter-turn short circuit in the tripping and closing coil;
[0007] 2) It cannot monitor the interlock circuit other than the trip coil

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
  • Circuit breaker tripping and closing loop all-condition monitoring circuit
  • Circuit breaker tripping and closing loop all-condition monitoring circuit
  • Circuit breaker tripping and closing loop all-condition monitoring circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] like figure 2 As shown, it includes closing monitoring circuit, closing circuit, tripping monitoring circuit, tripping circuit, first circuit breaker body 1, second circuit breaker body 2, first circuit breaker body 1 includes closing coil YC, normally open contact Point S1, normally closed contact S2, normally closed contact S3, the normally open contact S1 is connected in series with the coil part of the closing circuit monitoring relay HJS, and the A end of the normally closed contact S3 is respectively connected with the coil part of the closing circuit monitoring relay HJS The A terminal of the switch and the coil part of the closing self-holding relay SHJ are connected;

[0024] The second circuit breaker body 2 includes a trip coil YO, a normally closed contact S4, a normally open contact S5, and a normally open contact S6. The normally closed contact S4 is connected in series with the coil part of the trip circuit monitoring relay TJS, and the normally open con...

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

A circuit breaker tripping and closing loop all-condition monitoring circuit comprises a closing monitoring loop, a closing loop, a tripping monitoring loop, a tripping loop, a first circuit breaker body and a second circuit breaker body. The first circuit breaker body comprises a closing coil YC, a normally open contact S1, a normally closed contact S2 and a normally closed contact S3. The normally open contact S1 is connected in series with a coil part of a closing loop monitoring relay HJS. An end A of the normally-closed contact S3 is connected with an end A of the coil part of the closingloop monitoring relay HJS and a coil part of a closing self-holding relay SHJ respectively. The invention aims to provide a circuit breaker tripping and closing loop all-condition monitoring circuitwhich can well perform all-condition monitoring on tripping and closing loops of a circuit breaker, comprising comprehensive monitoring of the tripping and closing loops, tripping and closing coils and an interlocking loop.

Description

technical field [0001] The invention relates to the field of relay protection, in particular to a circuit breaker tripping and closing circuit full working condition monitoring circuit. Background technique [0002] Traditional circuit breaker tripping and closing circuit monitoring, such as figure 1 As shown, it is realized by using HWJ and TWJ monitoring relays. Its principle is that the HWJ monitoring relays are connected in parallel at both ends of the trip outlet contacts, and then connected in series to the trip coil circuit. When the circuit breaker is closed, the monitoring of the trip circuit is realized. The TWJ monitoring relay is connected in parallel at both ends of the closing outlet contact, and then connected in series to the closing coil circuit, and realizes the monitoring of the closing circuit when the circuit breaker is in position. [0003] Obviously, the HWJ monitoring relay can only play a monitoring role when the circuit breaker is closed, and the T...

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): G01R31/28
CPCG01R31/2827
Inventor 杨维胜任丽先闫海峰侯小虎李永峥李光耀龚林平
Owner CHINA YANGTZE POWER
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