Breaker and operation method thereof

An operation method and technology of circuit breakers, which are applied in circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve the problems of breaker damage and closing failure, so as to avoid potential safety hazards and improve safety performance. Effect

Inactive Publication Date: 2018-07-24
NANJING DIANRUN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the automatic reclosing device can only try to close according to the fixed interval time and times. If the fault on the line still exists during the closing attempt, it will cause the closing failure and cause the circuit breaker to be damaged.

Method used

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  • Breaker and operation method thereof
  • Breaker and operation method thereof
  • Breaker and operation method thereof

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Embodiment Construction

[0019] In order to facilitate the understanding of the invention, the invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not inten...

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Abstract

The present invention relates to a breaker. The breaker comprises a control unit, a detection unit, an actuation unit and a switch. The detection unit and the actuation unit are electrically connectedwith the control unit, the switch is configured to be disconnected under the driving of the actuation unit, the detection unit is configured to output electrical signals to an electric power circuitto measure an impedance value of the electric power circuit, the control unit is configured to compare the impedance value and a preset impedance value, and when the impedance value is larger than orequal to the preset impedance value, the control unit controls the actuation unit to communicate with the switch. The breaker is high in safety. The present invention further provides an operation method of the breaker.

Description

technical field [0001] The invention relates to a circuit breaker and its operating method. Background technique [0002] Most of the faults in the power system are faults in transmission lines. Operating experience shows that most overhead line faults are "instantaneous". For example, flashover on the surface of insulators caused by lightning, wire contact caused by strong winds, short circuits caused by birds and branches falling on the wires, etc., after the line is quickly disconnected by relay protection, the arc is extinguished immediately, and external objects (such as branches, birds, etc.) are also burned by the arc and disappear. At this time, if the disconnected circuit breaker is closed again, normal power supply can be restored. Therefore, such failures are "transient failures". In addition, there are also "permanent faults", such as faults caused by downed poles, broken wires, breakdown or damage of insulators, etc., after the line is disconnected, they sti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/06
CPCH02H3/066
Inventor 周旋沈镇炜樊腾化滕世玉王雪春王书进
Owner NANJING DIANRUN TECH
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