CN106324411A - Intelligent tester for metering wiring of secondary circuit - Google Patents
Intelligent tester for metering wiring of secondary circuit Download PDFInfo
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- CN106324411A CN106324411A CN201510380766.1A CN201510380766A CN106324411A CN 106324411 A CN106324411 A CN 106324411A CN 201510380766 A CN201510380766 A CN 201510380766A CN 106324411 A CN106324411 A CN 106324411A
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- charging capacitor
- intelligent tester
- chip microcomputer
- transformer
- pulse signal
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- 239000003990 capacitor Substances 0.000 claims abstract description 65
- 238000012360 testing method Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 abstract description 13
- 230000006870 function Effects 0.000 description 10
- 230000001939 inductive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004397 blinking Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000000541 pulsatile effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
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Abstract
The invention discloses an intelligent tester for metering the wiring of a secondary circuit. The intelligent tester comprises a pulse signal device. The output end of the pulse signal device is electrically connected with a signal clip capable of clamping the primary-side terminal of a transformer through a signal line. The intelligent tester further comprises two output clips in clamped cooperation with the secondary-side terminal of the transformer. The two output clips are connected in parallel with a charging capacitor through output lines. A one-way diode is connected in series between the positive electrode of the charging capacitor and the corresponding output line. The positive electrode of the charging capacitor is electrically connected with the input end of a single-chip microcomputer. The output end of the single-chip microcomputer is electrically connected with an alarm. The intelligent tester is reasonable in structure, simple in operation, convenient in detection, time-saving and labor-saving, wherein the intelligent tester can assist in completing the wiring detection of an integrated electric control cabinet transformer. Meanwhile, by means of the intelligent tester, detection results can be quickly judged and the operation can be completed by only one person. Therefore, the detection efficiency is improved.
Description
Technical field
The present invention relates to metering secondary wiring intelligent tester.
Background technology
The commonly used integrated design of 10kV power distribution cabinet at present, transformer and second loop return wiring thereof when equipment dispatches from the factory mounting arrangements in cabinet, this greatly facilitates the installation exercise of metering, but it sometimes appear that error-polarity connection of transformer or the situation of secondary connection mistake.Owing to secondary connection layout is concealed, it is difficult to by direct visual perception, in order to ensure metering accuracy, it is necessary to second loop return wiring is verified.
Due to the special auxiliary equipment second loop return wiring not verified, the traditional method that electric power commissioning staff uses is " break-make method surveyed by circuit tester ", i.e. utilizing circuit tester to survey break-make gear and test secondary line one by one, thus it is the most corresponding to distinguish transformer side and electric energy meter side, wiring is the most correct.
Traditional method has the disadvantage that and not enough:
1, due to the internal connection of transformer, therefore traditional method needs to take apart mutual inductor secondary connection, also needs reconnection, increase unnecessary trouble after verification.
2, transformer is installed to, inside cabinet baffle plate, be difficult to touch, test inconvenience, wastes time and energy.
3, pen meter of universal meter p-wire limited length, it is impossible to directly connection secondary connection both sides, needs the wire of extra sufficient length to constitute loop.
4, pen meter of universal meter is needle-like design, people must be had to be pressed against by test pencil on second loop return wiring terminal when test, power distribution cabinet for narrow space a people can only operate a test pencil, it is therefore desirable at least two people just can complete test job, and work efficiency is relatively low.
Summary of the invention
The technical problem to be solved in the present invention is a kind of rational in infrastructure for above-mentioned not enough offer, the wiring to integrated electric cabinet transformer can have been assisted to detect, simple to operate, easy to detect, time saving and energy saving, can quickly judge testing result, and a people just can operate, and is favorably improved the metering secondary wiring intelligent tester of detection efficiency.
For solving above-mentioned technical problem, this metering secondary wiring intelligent tester includes pulse signal device, the outfan of pulse signal device is electrically connected with the signal folder that can clamp transformer primary side terminal by holding wire, also include the output folder that can coordinate with the clamping of transformer secondary side terminal, two output folders are parallel with charging capacitor by output lead, it is serially connected with unilateral diode between charging capacitor positive pole and corresponding output lead, the positive pole of charging capacitor electrically connects with single-chip microcomputer input, and single-chip microcomputer outfan is electrically connected with alarm.
This metering secondary wiring intelligent tester is to realize having assisted the wiring to integrated electric cabinet transformer to detect by clipping pulse induction structure, simple to operate, easy to detect, time saving and energy saving, can quickly judge testing result, and one people just can operate, be favorably improved detection efficiency.
Clipping pulse induction structure is mainly disposed to the pulse signal device of transformer primary side and is arranged on the sensing test circuit of transformer secondary side, wherein, the Main Function of pulse signal device is to produce pulse signal, pulse signal device outfan is electrically connected with transformer primary side terminal by holding wire, thus transformer primary side terminal can persistently be sent pulse signal.The operation principle of this patent is, the electric current of change is only sensed and changes by transformer, therefore after transformer primary side adds pulse signal, can obtain switching current at transformer secondary side.Owing to transformer has polarity, once or secondary connection is just connecing or during reversal connection, the inductive current direction that secondary circuit produces is different, therefore by judging that the faradic direction of secondary circuit i.e. can determine whether mutual inductor interstar connection correctness.This patent also includes two the output folders that can coordinate with the clamping of transformer secondary side terminal, and output folder is connected in parallel on charging capacitor two ends by output lead.For convenience of narration, the output lead being connected with charging capacitor positive electrical and output folder are referred to as positive output line and positive output folder or positive pole output lead and positive pole output folder, the output lead being connected with charging capacitor negative electricity and output folder are referred to as negative output line and negative output folder or negative pole output lead and negative pole output folder.Also being serially connected with unilateral diode between positive pole output lead and charging capacitor positive pole, the positive pole of unilateral diode electrically connects with positive pole output lead, and the negative pole of unilateral diode is connected with the positive electrical of charging capacitor.The Main Function of unilateral diode be utilize self unilateral conduction to transformer induced go out the flow direction of current signal be controlled.Specifically, when faradic current flows to charging capacitor negative pole, unilateral diode ends, and makes faradic current can not realize the charging to charging capacitor, therefore there is not any signal of telecommunication on charging capacitor.When faradic current flows to charging capacitor positive pole, unilateral diode turns on, and charging capacitor is charged by faradic current.Pulse signal device sends pulsatile once signal to transformer, and charging capacitor just accumulates certain charging charge.Charging capacitor is utilized to preserve the ability of electric charge, metastable voltage in accumulating and be converted into a period of time by secondary side weak current.Therefore the charging interval is the longest, and charging capacitor both end voltage is the highest.In this patent, the positive pole of charging capacitor electrically connects with single-chip microcomputer input, and single-chip microcomputer outfan is electrically connected with alarm.Single-chip microcomputer can constantly gather charging capacitor signal, and when charging capacitor magnitude of voltage reaches set point, the alarm of single-chip microcomputer meeting drive output is reported to the police, and such testing staff just can know the wiring correctness of transformer, i.e. intuitively facilitates again.
This patent is either connected with transformer primary side terminal, or it is connected with transformer secondary side terminal, it is all to realize by the way of signal presss from both sides and export folder clamping, avoid the drawback needing testing staff always to keep pressed state with hands in traditional detection method, not only operate simpler, and time saving and energy saving, a people is the most operable, substantially increases detection efficiency.
As a kind of implementation, described pulse signal device includes housing, is provided with between a holding wire of main battery, main battery positive pole and correspondence and is in series with main resistor and pulse switch in housing, and main battery negative pole electrically connects with another corresponding root holding wire.
This pulse signal device is to close moment by pulse switch, and main battery provides a power supply signal grown out of nothing simulate or produce pulse signal to transformer primary side terminal.Pulse switch closes once, just produces a pulse signal, therefore tester freely can determine according to actual condition supply pulse signal number, very convenient.The main resistor being arranged on main battery positive pole acts primarily as metering function, excessive to avoid transformer primary side dash current, serves the effect of protection transformer.
As a kind of preferred implementation, described alarm includes green light and red light, and green light concatenates with green light resistance and constitutes the green light branch road luminous by Single-chip Controlling, and red light concatenates with red light resistance and constitutes the red light branch road luminous by Single-chip Controlling.
When transformer primary side and secondary side wiring are correct, charging capacitor can to single-chip microcomputer send one on the occasion of voltage signal, now single-chip microcomputer can control green light branch road work, namely control green light flashing, to point out staff's wiring correct.Green light resistance mainly do with being current limliting, so that green light is working properly.On the contrary, when transformer primary side and secondary side wiring error, charging capacitor will not be charged, single-chip microcomputer from charging capacitor do not collect one on the occasion of voltage signal, or gather the negative voltage signal that a numerical value is less, now single-chip microcomputer can control the work of red light branch road, namely it is luminous to control blinking red lamp, to point out staff wiring error.Red light resistance mainly do with being current limliting, so that red light is working properly.By red light and the instruction of green light, staff can judge wiring correctness the most intuitively, makes detection work more time saving and energy saving.
As improvement, output lead two ends are parallel with amplitude limit stabilivolt.
The Main Function of amplitude limit stabilivolt is that the electromotive force inducing transformer secondary side terminal carries out amplitude limit and voltage stabilizing, namely the charging voltage of charging capacitor is carried out amplitude limit, charging capacitor so can be made to match with single-chip microcomputer input, fundamentally avoid and damage single-chip microcomputer because charging voltage is too high.
As improving further, charging capacitor two ends are parallel with the discharge paths concatenated by discharge resistance and discharge switch.
The Main Function of discharge paths is to discharge charging capacitor, and charging capacitor so can be made to recover electroless state and recharged work.When needing electric discharge, only need to close discharge switch, charging capacitor just constitutes discharge loop with discharge switch and discharge resistance, and the electric charge of such charging capacitor storage can be discharged by discharge resistance, operates the simplest.
As improvement, single-chip microcomputer outfan is also electrically connected with the loudspeaker playing test result voice.
Test result voice can be play to tester by loudspeaker, the most very useful.Particularly light is strong when, the flicker of red light and green light will thicken, and voice broadcast will be more accurate and convenient.
In sum, use the metering secondary wiring intelligent tester of this structure, rational in infrastructure, the wiring to integrated electric cabinet transformer can have been assisted to detect, simple to operate, easy to detect, time saving and energy saving, can quickly judge testing result, and a people just can operate, and is favorably improved detection efficiency.
Accompanying drawing explanation
In conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is the structural representation of this patent；
Fig. 2 is the circuit theory diagrams of this patent.
Detailed description of the invention
As shown in the figure, this metering secondary wiring intelligent tester includes pulse signal device 1, the outfan of pulse signal device is electrically connected with the signal folder 4 that can clamp transformer 3 primary side terminal by holding wire 2, also include the output folder 5 that can coordinate with the clamping of transformer secondary side terminal, two output folders are parallel with charging capacitor 7 by output lead 6, it is serially connected with unilateral diode 8 between charging capacitor positive pole and corresponding output lead, the positive pole of charging capacitor electrically connects with single-chip microcomputer 9 input, and single-chip microcomputer outfan is electrically connected with alarm.This metering secondary wiring intelligent tester mainly includes the pulse signal device being arranged on transformer primary side and is arranged on the sensing test circuit of transformer secondary side, wherein, the Main Function of pulse signal device is to produce pulse signal, pulse signal device outfan is electrically connected with transformer primary side terminal by holding wire, thus transformer primary side terminal can persistently be sent pulse signal.The operation principle of this patent is, the electric current of change is only sensed and changes by transformer, therefore after transformer primary side adds pulse signal, can obtain switching current at transformer secondary side.Owing to transformer has polarity, once or secondary connection is just connecing or during reversal connection, the inductive current direction that secondary circuit produces is different, therefore by judging that the faradic direction of secondary circuit i.e. can determine whether mutual inductor interstar connection correctness.This patent also includes two the output folders that can coordinate with the clamping of transformer secondary side terminal, and output folder is connected in parallel on charging capacitor two ends by output lead.For convenience of narration, the output lead being connected with charging capacitor positive electrical and output folder are referred to as positive output line and positive output folder or positive pole output lead and positive pole output folder, the output lead being connected with charging capacitor negative electricity and output folder are referred to as negative output line and negative output folder or negative pole output lead and negative pole output folder.Also being serially connected with unilateral diode between positive pole output lead and charging capacitor positive pole, the positive pole of unilateral diode electrically connects with positive pole output lead, and the negative pole of unilateral diode is connected with the positive electrical of charging capacitor.The Main Function of unilateral diode be utilize self unilateral conduction to transformer induced go out the flow direction of current signal be controlled.Specifically, when faradic current flows to charging capacitor negative pole, unilateral diode ends, and makes faradic current can not realize the charging to charging capacitor, therefore there is not any signal of telecommunication on charging capacitor.When faradic current flows to charging capacitor positive pole, unilateral diode turns on, and charging capacitor is charged by faradic current.Pulse signal device sends pulsatile once signal to transformer, and charging capacitor just accumulates certain charging charge.Charging capacitor is utilized to preserve the ability of electric charge, metastable voltage in accumulating and be converted into a period of time by secondary side weak current.Therefore the charging interval is the longest, and charging capacitor both end voltage is the highest.In this patent, the positive pole of charging capacitor electrically connects with single-chip microcomputer input, and single-chip microcomputer outfan is electrically connected with alarm.Single-chip microcomputer can constantly gather charging capacitor signal, and when charging capacitor magnitude of voltage reaches set point, the alarm of single-chip microcomputer meeting drive output is reported to the police, and such testing staff just can know the wiring correctness of transformer, i.e. intuitively facilitates again.
This patent is either connected with transformer primary side terminal, or it is connected with transformer secondary side terminal, it is all to realize by the way of signal presss from both sides and export folder clamping, avoid the drawback needing testing staff always to keep pressed state with hands in traditional detection method, not only operate simpler, and time saving and energy saving, a people is the most operable, substantially increases detection efficiency.
Described pulse signal device includes housing 11, is provided with between a holding wire of main battery 12, main battery positive pole and correspondence and is in series with main resistor 13 and pulse switch 14 in housing, and main battery negative pole electrically connects with another corresponding root holding wire.This pulse signal device is to close moment by pulse switch, and main battery provides a power supply signal grown out of nothing simulate or produce pulse signal to transformer primary side terminal.Pulse switch closes once, just produces a pulse signal, therefore tester freely can determine according to actual condition supply pulse signal number, very convenient.The main resistor being arranged on main battery positive pole acts primarily as metering function, excessive to avoid transformer primary side dash current, serves the effect of protection transformer.
Described alarm includes green light 15 and red light 16, and green light concatenates with green light resistance 17 and constitutes the green light branch road luminous by Single-chip Controlling, and red light concatenates with red light resistance 18 and constitutes the red light branch road luminous by Single-chip Controlling.When transformer primary side and secondary side wiring are correct, charging capacitor can to single-chip microcomputer send one on the occasion of voltage signal, now single-chip microcomputer can control green light branch road work, namely control green light flashing, to point out staff's wiring correct.Green light resistance mainly do with being current limliting, so that green light is working properly.On the contrary, when transformer primary side and secondary side wiring error, charging capacitor will not be charged, single-chip microcomputer from charging capacitor do not collect one on the occasion of voltage signal, or gather the negative voltage signal that a numerical value is less, now single-chip microcomputer can control the work of red light branch road, namely it is luminous to control blinking red lamp, to point out staff wiring error.Red light resistance mainly do with being current limliting, so that red light is working properly.By red light and the instruction of green light, staff can judge wiring correctness the most intuitively, makes detection work more time saving and energy saving.
In this patent, output lead two ends are parallel with amplitude limit stabilivolt 19.The Main Function of amplitude limit stabilivolt is that the electromotive force inducing transformer secondary side terminal carries out amplitude limit and voltage stabilizing, namely the charging voltage of charging capacitor is carried out amplitude limit, charging capacitor so can be made to match with single-chip microcomputer input, fundamentally avoid and damage single-chip microcomputer because charging voltage is too high.
Charging capacitor two ends are parallel with the discharge paths concatenated by discharge resistance 20 and discharge switch 21.The Main Function of discharge paths is to discharge charging capacitor, and charging capacitor so can be made to recover electroless state and recharged work.When needing electric discharge, only need to close discharge switch, charging capacitor just constitutes discharge loop with discharge switch and discharge resistance, and the electric charge of such charging capacitor storage can be discharged by discharge resistance, operates the simplest.
Single-chip microcomputer outfan is also electrically connected with the loudspeaker 22 playing test result voice.Test result voice can be play to tester by loudspeaker, the most very useful.Particularly light is strong when, the flicker of red light and green light will thicken, and voice broadcast will be more accurate and convenient.
Claims (6)
1. a metering secondary wiring intelligent tester, it is characterized in that: include pulse signal device (1), the outfan of pulse signal device is electrically connected with signal folder (4) that can clamp transformer (3) primary side terminal by holding wire (2), also include output folder (5) that can coordinate with the clamping of transformer (3) secondary side terminal, two outputs folder (5) are parallel with charging capacitor (7) by output lead (6), it is serially connected with unilateral diode (8) between charging capacitor (7) positive pole and corresponding output lead (6), the positive pole of charging capacitor (7) electrically connects with single-chip microcomputer (9) input, single-chip microcomputer (9) outfan is electrically connected with alarm.
2. metering secondary wiring intelligent tester as claimed in claim 1, it is characterized in that: described pulse signal device (1) includes housing (11), main battery (12) it is provided with in housing (11), being in series with main resistor (13) and pulse switch (14) between main battery (12) positive pole and a corresponding holding wire (2), main battery (12) negative pole electrically connects with another corresponding root holding wire (2).
3. metering secondary wiring intelligent tester as claimed in claim 2, it is characterized in that: described alarm includes green light (15) and red light (16), green light (15) concatenates with green light resistance (17) to constitute and is controlled luminous green light branch road by single-chip microcomputer (9), and red light (16) concatenates with red light resistance (18) to constitute and controlled luminous red light branch road by single-chip microcomputer (9).
4. metering secondary wiring intelligent tester as claimed in claim 3, is characterized in that: output lead (6) two ends are parallel with amplitude limit stabilivolt (19).
5. the metering secondary wiring intelligent tester as described in claim 1-4 any claim, is characterized in that: charging capacitor (7) two ends are parallel with the discharge paths concatenated by discharge resistance (20) and discharge switch (21).
6. metering secondary wiring intelligent tester as claimed in claim 5, is characterized in that: single-chip microcomputer (9) outfan is also electrically connected with the loudspeaker (22) playing test result voice.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510380766.1A CN106324411A (en) | 2015-07-02 | 2015-07-02 | Intelligent tester for metering wiring of secondary circuit |
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| CN201510380766.1A CN106324411A (en) | 2015-07-02 | 2015-07-02 | Intelligent tester for metering wiring of secondary circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782212A (en) * | 2018-12-29 | 2019-05-21 | 国网山东省电力公司聊城供电公司 | Bilateral separate type metering secondary wiring check device and its core line method |
| CN109991504A (en) * | 2019-03-19 | 2019-07-09 | 广东电网有限责任公司 | A kind of Substation secondary circuit on-off measuring instrument |
| CN112433180A (en) * | 2020-11-04 | 2021-03-02 | 国网北京市电力公司 | Intelligent wiring detector for electric energy meter |
| CN113176438A (en) * | 2021-04-15 | 2021-07-27 | 国网湖北省电力有限公司宜昌供电公司 | Transformer substation secondary circuit detector and detection method |
| CN117523795A (en) * | 2024-01-08 | 2024-02-06 | 电子科技大学 | Weak current bridge circuit layout abnormality early warning method and system based on Internet of things |
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| CN109991504B (en) * | 2019-03-19 | 2024-04-16 | 广东电网有限责任公司 | Transformer substation secondary circuit on-off measuring instrument |
| CN112433180A (en) * | 2020-11-04 | 2021-03-02 | 国网北京市电力公司 | Intelligent wiring detector for electric energy meter |
| CN113176438A (en) * | 2021-04-15 | 2021-07-27 | 国网湖北省电力有限公司宜昌供电公司 | Transformer substation secondary circuit detector and detection method |
| CN117523795A (en) * | 2024-01-08 | 2024-02-06 | 电子科技大学 | Weak current bridge circuit layout abnormality early warning method and system based on Internet of things |
| CN117523795B (en) * | 2024-01-08 | 2024-03-12 | 电子科技大学 | Weak current bridge circuit layout abnormality early warning method and system based on Internet of things |
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Application publication date: 20170111 |