Multi-stroke realizing circuit and multi-stroke control method for circuit breakers

A circuit breaker, multi-stroke technology, applied in the direction of protection switch operation/release mechanism, etc., can solve the problem of easy burning of circuit breaker closing/opening coils, etc., and achieve the effect of improving the closing success rate, ensuring maximum safety, and avoiding losses

Active Publication Date: 2016-01-20
STATE GRID HENAN LINGBAO POWER SUPPLY CO
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a circuit breaker multi-stroke realization circuit and a control method, which solves the problem that the closing / opening coil of the circuit breaker is easily burned due to the failure of a single action of the traditional circuit breaker control circuit

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
  • Multi-stroke realizing circuit and multi-stroke control method for circuit breakers
  • Multi-stroke realizing circuit and multi-stroke control method for circuit breakers
  • Multi-stroke realizing circuit and multi-stroke control method for circuit breakers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Such as figure 2 with image 3 As shown, the circuit breaker multi-stroke implementation circuit of the present invention includes a microprocessor, positive control bus +KM, negative control bus -KM, current relay HBJ, circuit breaker auxiliary normally closed contact DL, closing coil HQ and The manual closing operation switch KK also includes the switching device HZ;

[0023] The switching device HZ, the current relay HBJ, the auxiliary normally closed contact DL of the circuit breaker and the closing coil HQ are connected in series between the positive control bus +KM and the negative control bus -KM, the manual closing operation switch KK is connected in parallel at both ends of the switching device HZ, the switch The first end of the device HZ is connected to the output end of the microprocessor, and the contact of the current relay HBJ is connected to the input end of the microprocessor; the switching device HZ adopts an IGBT or a power triode, and the IGBT is a...

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 multi-stroke realizing circuit and a multi-stroke control method for circuit breakers. The multi-stroke realizing circuit comprises a microprocessor, a positive control bus +KM, a negative control bus -KM, a current relay HBJ, a circuit breaker auxiliary normally closed contact DL, a closing coil HQ and a manual closing operation switch KK, and further comprises a switching device HZ. First, the microprocessor controls the switching device and further controls on-off of the closing coil so as to make the circuit breaker auxiliary normally closed contact do stroke movement repeatedly when the circuit breaker auxiliary normally closed contact fails to be closed in the first stroke of the closing coil, thus avoiding the situation in which a circuit breaker is burned out when the circuit breaker receives a closing instruction but fails to be closed; and then, the microprocessor makes the closing coil of the circuit breaker do stroke movement repeatedly, which can improve the success rate of circuit breaker closing under emergency conditions and guarantee the electric safety of production and life to a greater extent.

Description

technical field [0001] The invention relates to the protection field of distribution substation devices, in particular to a circuit breaker multi-stroke realization circuit and a control method. Background technique [0002] In order to prevent damage to the contacts of the opening and closing relays during the process of disconnecting the operating current, the traditional opening and closing control circuits are equipped with current self-holding coils. Since the principles of the opening and closing control circuits are the same, we use the closing circuit As an example to explain the principle; figure 1 The closing circuit shown includes microprocessor, positive control bus +KM, negative control bus -KM, current self-holding coil HBJ, circuit breaker auxiliary normally closed contact DL, closing relay HJ, manual closing operation switch KK and closing Brake coil HQ, the output terminal of the microprocessor is connected with the closing relay HJ, which is used to contro...

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): H01H71/10
CPCH01H71/10
Inventor 张会平陈君霞许铭南军恒李艳波
Owner STATE GRID HENAN LINGBAO POWER SUPPLY CO
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