CN205263294U - Current transformer fault detection device - Google Patents

Current transformer fault detection device Download PDF

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Publication number
CN205263294U
CN205263294U CN201521104592.8U CN201521104592U CN205263294U CN 205263294 U CN205263294 U CN 205263294U CN 201521104592 U CN201521104592 U CN 201521104592U CN 205263294 U CN205263294 U CN 205263294U
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CN
China
Prior art keywords
module
current transformer
resistance
control module
detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201521104592.8U
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Chinese (zh)
Inventor
郭栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University of Water Resources and Electric Power
Original Assignee
Zhejiang University of Water Resources and Electric Power
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang University of Water Resources and Electric Power filed Critical Zhejiang University of Water Resources and Electric Power
Priority to CN201521104592.8U priority Critical patent/CN205263294U/en
Application granted granted Critical
Publication of CN205263294U publication Critical patent/CN205263294U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a current transformer fault detection device, a current transformer fault detection device, including test interface, detection module, control module, button module, display module and power module, wherein, detection module is connected with test interface and control module to under control module's control, carry out fault detection to the current transformer who inserts the test interface, control module receive to detect the feedback signal who sends the detected signal to detection module after the enabling signal and receive detection module, sends for the display module after carrying out signal processing to this feedback signal. Adopt the technical scheme of the utility model, in can being applied to current transformer's industrial production, short circuit that can short -term test current transformer, trouble such as open circuit adopt a simple circuit design to realize current transformer's fault detection simultaneously to improve current transformer's factory testing efficiency.

Description

A kind of current mulual inductor malfunction checkout gear
Technical field
The utility model belongs to transformer detection field, relates in particular to a kind of current mulual inductor malfunction and detects dressPut.
Background technology
At present, current transformer extensive use and current detecting and electrical fire field of detecting. But existingTechnology is comparatively loaded down with trivial details to himself fault detect mode in the time that current transformer is produced, and conventionally adopts universal meter inspectionSurvey its path, lack the checkout gear of the faults such as the opening circuit of a kind of effective fast detecting current transformer, short circuit.
Therefore, for the above-mentioned defect existing in currently available technology, be necessary to study in fact, to provide oneThe scheme of kind, solves the defect existing in prior art.
Utility model content
In view of this, necessaryly provide a kind of failure detector that can fast detecting current transformer.
The defect existing in order to overcome prior art, the utility model provides following technical scheme:
A kind of current mulual inductor malfunction checkout gear, comprise test interface, detection module, control module, byKey module, display module and power module, wherein,
Described power module provides corresponding power supply electricity for described detection module, control module and display modulePress;
Described test interface is connected with current transformer;
Described detection module is connected with described control module with described test interface, and in described control moduleControl under, to access test interface current transformer carry out fault detect;
Described key-press module is connected with described control module, for sending detection enabling signal;
Described display module is connected with described control module, for showing fault message;
Described control module receives the backward described detection module of detection enabling signal and sends detection signal and receiveThe feedback signal of described detection module, carries out sending to described demonstration mould after signal processing to this feedback signalPiece.
Preferably, described detection module further comprises the first resistance R 1, the second resistance R 2, the 3rd resistanceR3 and the first triode Q1.
Preferably, one end of described the first resistance R 1 is connected with the first control end of control module, described inThe other end of the first resistance R 1 is connected with the base stage of described the first triode Q1, described the first triodeThe colelctor electrode of Q1 is connected with one end of described the second resistance R 2 and the second control end of control module,The other end of described the second resistance R 2 is connected with power module, the emitter stage of described the first triode Q1Be connected with one end of current transformer and one end of described the 3rd resistance R 3 by test interface, described inThe other end of the 3rd resistance R 3 is connected with ground end (GND), and by test interface and current transformerThe other end be connected.
Preferably, described display module is made up of indicator lamp, at least comprises the indicator lamp that can indicate three kinds of states.
Preferably, the single-chip microcomputer that the model that described control module adopts Atmel company to release is Atmega16.
Compared with prior art, the utility model is applied to the industrial production of current transformer, can be quickDetect the short circuit of current transformer, the fault such as open circuit, and adopt a kind of simple circuit design to realize electric currentThe fault detect of transformer, thereby the factory testing efficiency of raising current transformer.
Brief description of the drawings
Fig. 1 is the theory diagram of a kind of current mulual inductor malfunction checkout gear of the utility model.
Fig. 2 is the circuit theory of detection module in a kind of current mulual inductor malfunction checkout gear of the utility modelFigure.
Following specific embodiment further illustrates the utility model in connection with above-mentioned accompanying drawing.
Detailed description of the invention
Below with reference to accompanying drawing, the utility model is described in further detail.
Prior art, very complicated to the dispatch from the factory method of fault detect of current transformer, detection person only conventionallyAdopt universal meter to detect break-make, detection efficiency is not high, and has greatly increased human cost.
Referring to Fig. 1, be depicted as the theory diagram of a kind of current mulual inductor malfunction checkout gear of the utility model,A kind of current mulual inductor malfunction checkout gear, comprises test interface, detection module, control module, button mouldPiece, display module and power module, wherein,
Power module provides corresponding supply voltage for detection module, control module and display module;
Test interface is connected with current transformer;
Detection module is connected with control module with test interface, and under the control of control module, to accessThe current transformer of test interface carries out fault detect;
Key-press module is connected with control module, for sending detection enabling signal;
Display module is connected with control module, for showing fault message;
Control module receives the backward detection module of detection enabling signal and sends detection signal and receive detection moduleFeedback signal, this feedback signal is carried out sending to display module after signal processing.
Adopt technique scheme, testing staff only needs current transformer to be connected with test interface, pressesDetect and start button, display module can provide testing result at once and inform fault type.
One preferred embodiment in, display module is made up of indicator lamp, at least comprises and can indicate three kindsThe indicator lamp of state, such as indicator lamp green, red, blue three-color, indicates respectively normal, short circuit, disconnectedThree kinds, road malfunction.
One preferred embodiment in, control module adopt Atmel company release model beThe single-chip microcomputer of Atmega16.
Referring to Fig. 2, be depicted as detection module in a kind of current mulual inductor malfunction checkout gear of the utility modelCircuit theory diagrams, detection module further comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3With the first triode Q1. Wherein, one end of the first resistance R 1 is connected with the first control end of control moduleConnect, the other end of the first resistance R 1 is connected with the base stage of the first triode Q1, the first triode Q1Colelctor electrode be connected with one end of the second resistance R 2 and the second control end of control module, the second resistanceThe other end of R2 is connected with power module, and the emitter stage of the first triode Q1 is by test interface and electricityOne end of one end of current transformer and the 3rd resistance R 3 is connected, the other end of the 3rd resistance R 3 and groundEnd (GND) is connected, and is connected with the other end of current transformer by test interface.
Detection module circuit working principle shown in above-mentioned Fig. 2 is as follows: described the second resistance R 2 resistances are 1KΩ, resistance is 1K Ω, the 3rd resistance R 3 resistances are 100 Ω. Control module is by the first control end controlThe first triode Q1 conducting, then detects the level state of control module the second control end immediately, normally connectsConnect under state, the coil in current transformer is because the variation of conducting immediate current has higher induction reactance,This induction reactance is in parallel with the 3rd resistance R 3, connects, to power supply with the second resistance R 2 and the first triode Q1The voltage that module provides carries out dividing potential drop, because the colelctor electrode of the first triode Q1 is to the conduction voltage drop of emitter stageVery little, control module the second control end voltage is about the half of power module voltage, control therefore detectedModule the second control end level should be high level, if low level, electricity, appears in current transformer short circuitCurrent transformer short trouble, control module is indicated transformer short trouble information by display module; If theThe second control end level of one-time detection control module is high level, so after a period of time, owing to being direct currentPower supply, the induction reactance of current transformer fades away, and again detects control module the second control end level,If low level current transformer normally connect, if high level, for current transformer opens circuit thereforeBarrier. Thus, adopt a kind of simple circuit design to realize the fault detect of current transformer.
The explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof. ShouldWhen pointing out, for those skilled in the art, do not depart from the utility model principle beforePut, can also carry out some improvement and modification to the utility model, these improvement and modification also fall into this realityIn protection domain by novel claim.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use thisUtility model. To be aobvious and easy for those skilled in the art to the multiple amendment of these embodimentSee, General Principle as defined herein can be in the situation that does not depart from spirit or scope of the present utility modelUnder, realize in other embodiments. Therefore, the utility model will can not be restricted to shown in this article theseEmbodiment, but to meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (5)

1. a current mulual inductor malfunction checkout gear, is characterized in that, comprise test interface, detection module,Control module, key-press module, display module and power module, wherein,
Described power module provides corresponding supply voltage for described detection module, control module and display module;
Described test interface is connected with current transformer;
Described detection module is connected with described control module with described test interface, and in described control moduleControl under, to access test interface current transformer carry out fault detect;
Described key-press module is connected with described control module, for sending detection enabling signal;
Described display module is connected with described control module, for showing fault message;
Described control module receives the backward described detection module of detection enabling signal and sends detection signal and receive instituteState the feedback signal of detection module, this feedback signal is carried out sending to described display module after signal processing.
2. current mulual inductor malfunction checkout gear according to claim 1, is characterized in that, described inspectionSurvey module and further comprise the first resistance R 1, the second resistance R 2, the 3rd resistance R 3 and the first triode Q1.
3. current mulual inductor malfunction checkout gear according to claim 2, is characterized in that, describedOne end of one resistance R 1 is connected with the first control end of control module, the other end of described the first resistance R 1Be connected with the base stage of described the first triode Q1, the colelctor electrode of described the first triode Q1 and described secondThe second control end of one end of resistance R 2 and control module is connected, the other end of described the second resistance R 2Be connected with power module, the emitter stage of described the first triode Q1 is by test interface and current transformerOne end of one end and described the 3rd resistance R 3 is connected, the other end of described the 3rd resistance R 3 and ground end(GND) be connected, and be connected with the other end of current transformer by test interface.
4. current mulual inductor malfunction checkout gear according to claim 1, is characterized in that, described aobviousShow that module is made up of indicator lamp, at least comprise the indicator lamp that can indicate three kinds of states.
5. current mulual inductor malfunction checkout gear according to claim 1, is characterized in that, described controlThe single-chip microcomputer that the model that molding piece adopts Atmel company to release is Atmega16.
CN201521104592.8U 2015-12-25 2015-12-25 Current transformer fault detection device Expired - Fee Related CN205263294U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521104592.8U CN205263294U (en) 2015-12-25 2015-12-25 Current transformer fault detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521104592.8U CN205263294U (en) 2015-12-25 2015-12-25 Current transformer fault detection device

Publications (1)

Publication Number Publication Date
CN205263294U true CN205263294U (en) 2016-05-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106771543A (en) * 2016-12-29 2017-05-31 重庆金鑫智慧科技有限公司 A kind of fault diagnosis system based on current detecting
CN107976601A (en) * 2017-10-20 2018-05-01 广州小鹏汽车科技有限公司 A kind of fault diagnosis circuit and method for NTC temperature acquisition circuits
CN109923424A (en) * 2016-10-11 2019-06-21 阿莫善斯有限公司 Device and method for diagnosing the failure of electromagnetic induction power supply unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109923424A (en) * 2016-10-11 2019-06-21 阿莫善斯有限公司 Device and method for diagnosing the failure of electromagnetic induction power supply unit
CN109923424B (en) * 2016-10-11 2022-02-25 阿莫善斯有限公司 Apparatus and method for diagnosing a fault in an electromagnetic induction power supply device
CN106771543A (en) * 2016-12-29 2017-05-31 重庆金鑫智慧科技有限公司 A kind of fault diagnosis system based on current detecting
CN107976601A (en) * 2017-10-20 2018-05-01 广州小鹏汽车科技有限公司 A kind of fault diagnosis circuit and method for NTC temperature acquisition circuits
CN107976601B (en) * 2017-10-20 2020-06-12 广州小鹏汽车科技有限公司 Fault diagnosis circuit and method for NTC temperature acquisition circuit

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C14 Grant of patent or utility model
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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160525

Termination date: 20161225