CN208399618U - A kind of real-time inspection and control device of electrical equipment grounding state - Google Patents
A kind of real-time inspection and control device of electrical equipment grounding state Download PDFInfo
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- CN208399618U CN208399618U CN201820813535.4U CN201820813535U CN208399618U CN 208399618 U CN208399618 U CN 208399618U CN 201820813535 U CN201820813535 U CN 201820813535U CN 208399618 U CN208399618 U CN 208399618U
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Abstract
The utility model discloses a kind of real-time inspection and control devices of electrical equipment grounding state, are related to the technical field of safety protection of electrical equipment.The real-time inspection and control device of the electrical equipment grounding state, including self-test button, AC/DC converter, control relay, pressure unit, acousto-optic warning unit, single-chip microcontroller monitoring unit, sampling unit and photoelectric coupling circuit unit；The ground terminal of the real-time continuous monitoring electrical equipment of single-chip microcontroller Condition Monitoring Unit feeds back a high level and gives single-chip microcontroller monitoring unit, control acousto-optic warning unit issues sound-light alarm when ground terminal exception；Meanwhile single-chip microcontroller monitoring unit makes to control the actuating of relay, cuts off the current supply circuit of monitored electrical equipment, plays a protective role to monitoring device and electrical equipment；It is handled early by the real-time continuous monitoring to electrical equipment grounding end so that testing crew finds problem with grounding in time, avoids the damage of monitored electrical equipment and Personal Risk is caused to testing crew.
Description
Technical field
The utility model belongs to the technical field of safety protection more particularly to a kind of electrical equipment grounding state of electrical equipment
Real-time inspection and control device.
Background technique
High-tension switch cabinet instrument for measuring partial discharge, for measuring the letter of the shelf depreciation in the switchgears such as substation, power plant
Number.Since site environment is complicated, charging equipment voltage class is high, the metal shell of instrument need to carry out protective grounding.If measuring
In the process, keep instrument ground bad due to being grounded insecure, ground line broken string etc., then can cause Personal Risk to testing crew,
Equally also make measuring instrument easy to damage.
Currently, the protective grounding state of high-tension testing apparatus (electrical equipment) lacks the monitoring of continuous effective, control means.
Based on this, the utility model proposes a kind of real-time inspection and control devices of electrical equipment grounding state, are not changing electrical equipment
In the case where original structure, function, the current supply circuit of electrical equipment (such as high-tension switch cabinet instrument for measuring partial discharge) is added
To improve, built-in monitoring device realizes continuous monitoring to the ground state of electrical equipment, and can be from dynamic circuit breaker after monitoring exception
Electricity realizes the real-time monitoring to testing equipment protective grounding state and automatically powers off control, pacifies to the person of protection test personnel
It is complete significant.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of real-time monitoring device of electrical equipment grounding state.
The utility model is to solve above-mentioned technical problem by the following technical solutions: a kind of electrical equipment grounding shape
The real-time monitoring device of state, including self-test button CS, AC/DC converter, control relay, pressure unit, acousto-optic warning unit,
Single-chip microcontroller monitoring unit, sampling unit and photoelectric coupling circuit unit；
The self-test button CS is in parallel with the power switch SS of monitored electrical equipment, and one end after parallel connection is exchanged with 220V
Electrical connection, the other end are connect with the input terminal of AC/DC converter；The output end of the AC/DC converter respectively with control relay
The input terminal connection of device, pressure unit；The output end of the pressure unit is connect with the power end of single-chip microcontroller monitoring unit；It is described
Control relay is also connect with one end of sampling unit, and the other end of sampling unit is as grounding monitor output end；Sampling unit
Both ends connect with the input terminal of the photoelectric coupling circuit unit；The output end of photoelectric coupling circuit unit and the single-chip microcontroller
Monitoring unit connection；The single-chip microcontroller monitoring unit is also connect with control relay, acousto-optic warning unit respectively.
Further, the control relay includes intermediate relay and signal relay；Intermediate relay has two pairs
Normally opened contact KA-1, KA-2 and coil KA, signal relay have a pair of normally-closed contact KS and coil KS；
The normally opened contact KA-1 of intermediate relay is arranged in self-test button CS and power switch SS and AC/DC in parallel and converts
Between device, one end of the normally-closed contact KS of the normally opened contact KA-2 and signal relay of intermediate relay is converted with AC/DC respectively
The output end of device connects, and the other end is connect with the coil KA of the coil KS of signal relay and signal relay respectively.
Further, the sampling unit is sample resistance, and the resistance value of the sample resistance is 40 ohm.
Further, the self-test button CS is i.e. disconnected formula without self-locking button switch, and is arranged monitored electrical
On the control panel of equipment；The self-test button, for detecting the ground state monitoring function and sound-light alarm function of monitoring device
Can whether normal；Self-test button is connected in parallel with power switch, and the two can not be closed at.
Further, the acousto-optic warning unit includes buzzer and indicator light.
Further, the single-chip microcontroller monitoring unit uses the singlechip chip of model STM32L151.
Further, the optocoupler circuit unit uses model TLP632 photoelectrical coupler.
The real-time inspection and control device of the utility model electrical equipment grounding state is built in monitored electrical equipment, and
Be installed between the power switch SS of monitored electrical equipment and monitored electrical equipment, be monitored electrical equipment ground terminal with
Ground wire connection, when the ground line of electrical equipment broken string, poor contact or non-wiring, grounding monitor output end feeds back a height
Level signal gives single-chip microcontroller monitoring unit, and issues sound-light alarm, so that testing crew finds problem with grounding in time, locates early
Reason, avoids the damage of monitored electrical equipment and causes Personal Risk to testing crew；Meanwhile single-chip microcontroller monitoring unit makes to control
The actuating of relay processed is attracted signal relay coil KS under electromagnetic force, disconnects its normally-closed contact KS, leads to centre
Relay coil KA loses electromagnetic force tripping, and two couples of normally opened contacts KA-1 and KA-2 that intermediate relay has been closed are disconnected, cutting
The current supply circuit of monitored electrical equipment, achievees the purpose that automatically power off, plays guarantor to monitoring device and monitored electrical equipment
Shield effect, also avoids causing Personal Risk to testing crew；
When power switch SS is closed, intermediate relay coil KA is attracted under electromagnetic force, makes the two of intermediate relay
Normally opened contact KA-1 and KA-2 are closed, power supply is powered to control relay, single-chip microcontroller monitoring unit, acousto-optic warning unit, quilt
The current supply circuit for monitoring electrical equipment is connected.
Compared with prior art, the real-time inspection and control device of electrical equipment grounding state provided by the utility model,
Including self-test button CS, AC/DC converter, control relay, pressure unit, acousto-optic warning unit, single-chip microcontroller monitoring unit, take
Sample unit and photoelectric coupling circuit unit；The ground terminal of the real-time continuous monitoring electrical equipment of single-chip microcontroller monitoring unit, when connecing
When ground terminal exception, feeds back a high level signal and give single-chip microcontroller monitoring unit, control acousto-optic warning unit issues sound-light alarm；Together
When, single-chip microcontroller monitoring unit makes to control the actuating of relay, the current supply circuit of monitored electrical equipment is cut off, to monitoring device and electricity
Gas equipment plays a protective role；By the real-time continuous monitoring to electrical equipment grounding end, so that testing crew finds to connect in time
Ground problem, is handled early, is avoided the damage of monitored electrical equipment and is caused Personal Risk to testing crew；
The monitoring device of the utility model have structure it is simple, it is reliable, using safe and real-time monitoring, power-off etc. immediately
Advantage.
Detailed description of the invention
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution of the utility model
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only one embodiment of the utility model, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of electrical equipment grounding status monitoring control device of the utility model；
Fig. 2 is the electric diagram of the utility model control relay wiring；
Fig. 3 is the wiring diagram of electrical equipment grounding status monitoring control device and monitored electrical equipment of the present invention；
Wherein: 1- grounding monitor output end, 2- are monitored the ground terminal of electrical equipment.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, to this implement the technical solution in novel carry out it is clear, complete
Site preparation description, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative labor
Every other embodiment, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of real-time inspection and control device of electrical equipment grounding state provided by the utility model, packet
Include self-test button CS, AC/DC converter, control relay, pressure unit, acousto-optic warning unit, single-chip microcontroller monitoring unit, sampling
Unit and photoelectric coupling circuit unit；
Self-test button CS is in parallel with the power switch SS of monitored electrical equipment, and one end after parallel connection is exchanged with 220V to be electrically connected
It connects, the other end is connect with the input terminal of AC/DC converter；The output end of AC/DC converter is single with control relay, decompression respectively
The input terminal connection of member；The output end of pressure unit is connect with the power end of single-chip microcontroller monitoring unit；Control relay also with take
One end of sample unit connects, and the other end of sampling unit is as grounding monitor output end 1；The both ends of sampling unit and photoelectric coupling
The input terminal of circuit unit connects；The output end of photoelectric coupling circuit unit is connect with single-chip microcontroller monitoring unit；Single-chip microcontroller monitoring
Unit is also connect with control relay, acousto-optic warning unit respectively.
As shown in Fig. 2, control relay includes intermediate relay and signal relay；Intermediate relay is normally opened with two pairs
Contact KA-1, KA-2 and coil KA, signal relay have a pair of normally-closed contact KS and coil KS；
The normally opened contact KA-1 of intermediate relay is arranged in self-test button CS and power switch SS and AC/DC in parallel and converts
Between device, one end of the normally-closed contact KS of the normally opened contact KA-2 and signal relay of intermediate relay is converted with AC/DC respectively
The output end of device connects, and the other end is connect with the coil KA of the coil KS of signal relay and signal relay respectively.
Self-test button CS is i.e. disconnected formula without self-locking button switch, and the control panel of monitored electrical equipment is arranged in
On；Whether self-test button CS, the ground state monitoring function and sound and light of alarm for detecting monitoring device are normal；Self-test is pressed
Button CS is connected in parallel with power switch SS, and the two can not be closed at.
Acousto-optic warning unit includes buzzer and indicator light.
The real-time inspection and control device of the utility model electrical equipment grounding state is built in monitored electrical equipment, and
It is installed between the power switch SS of monitored electrical equipment and monitored electrical equipment, grounding monitor output end 1 and electrical
The ground terminal 2 of equipment connects, as shown in Figure 3；One end of sample resistance passes through optocoupler circuit unit and single-chip microcontroller
The P0.1 mouth of STM32L151 connects, and the other end (grounding monitor output end 1) passes through optocoupler circuit unit and single-chip microcontroller
The P0.2 mouth of STM32L151 connects, and double logical combination judgements is carried out to P0.1 mouthfuls and P0.2 mouthfuls of input signals, to judge quilt
Whether the ground state for monitoring electrical equipment is normal；When ground state exception, grounding monitor output end 1 feeds back a high level
Signal gives single-chip microcontroller monitoring unit, and issues sound-light alarm；Meanwhile single-chip microcontroller monitoring unit issues signal to control relay,
Signal relay coil KS is attracted under electromagnetic force, disconnects its normally-closed contact KS, and intermediate relay coil KA is caused to lose
Electromagnetic force tripping is gone, two couples of normally opened contacts KA-1 and KA-2 that intermediate relay has been closed are disconnected, and power supply stops to monitoring device
Power supply, while the current supply circuit of electrical equipment disconnects, and achievees the purpose that automatically power off；When power switch SS closure, intermediate relay
Device coil KA is attracted under electromagnetic force, is closed two couples of normally opened contacts KA-1 and KA-2 of intermediate relay, and power supply is to control
Relay processed, single-chip microcontroller monitoring unit, acousto-optic warning unit power supply, the current supply circuit for being monitored electrical equipment are connected.
Above disclosed is only specific embodiment of the present utility model, but the protection scope of the utility model not office
It is limited to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in change
Change or modification, should be covered within the scope of the utility model.
Claims (7)
1. a kind of real-time inspection and control device of electrical equipment grounding state, it is characterised in that: including self-test button CS, AC/DC
Converter, control relay, pressure unit, acousto-optic warning unit, single-chip microcontroller monitoring unit, sampling unit and photoelectric coupling electricity
Road unit；
The self-test button CS is in parallel with the power switch SS of monitored electrical equipment, and one end after parallel connection is exchanged with 220V to be electrically connected
It connects, the other end is connect with the input terminal of AC/DC converter；The output end of the AC/DC converter respectively with control relay, drop
Press the input terminal connection of unit；The output end of the pressure unit is connect with the power end of single-chip microcontroller monitoring unit；The control
Relay is also connect with one end of sampling unit, and the other end of sampling unit is as grounding monitor output end；The two of sampling unit
End is connect with the input terminal of the photoelectric coupling circuit unit；The output end of photoelectric coupling circuit unit and the single-chip microcontroller monitor
Unit connection；The single-chip microcontroller monitoring unit is also connect with control relay, acousto-optic warning unit respectively.
2. the real-time inspection and control device of electrical equipment grounding state as described in claim 1, it is characterised in that: the control
Relay includes intermediate relay and signal relay；Intermediate relay has two couples of normally opened contacts KA-1, KA-2 and coil KA,
Signal relay has a pair of normally-closed contact KS and coil KS；
The normally opened contact KA-1 of intermediate relay be arranged in parallel self-test button CS and power switch SS and AC/DC converter it
Between, one end of the normally-closed contact KS of the normally opened contact KA-2 and signal relay of intermediate relay respectively with AC/DC converter
Output end connection, the other end are connect with the coil KA of the coil KS of signal relay and signal relay respectively.
3. the real-time inspection and control device of electrical equipment grounding state as described in claim 1, it is characterised in that: the sampling
Unit is sample resistance, and the resistance value of the sample resistance is 40 ohm.
4. the real-time inspection and control device of electrical equipment grounding state as described in claim 1, it is characterised in that: the self-test
Button CS is i.e. disconnected formula without self-locking button switch, and is arranged on the control panel of monitored electrical equipment.
5. the real-time inspection and control device of electrical equipment grounding state as described in claim 1, it is characterised in that: the acousto-optic
Alarm unit includes buzzer and indicator light.
6. the real-time inspection and control device of electrical equipment grounding state as described in claim 1, it is characterised in that: the monolithic
Machine monitoring unit uses the singlechip chip of model STM32L151.
7. the real-time inspection and control device of electrical equipment grounding state as described in claim 1, it is characterised in that: the photoelectricity
Coupling circuit unit uses model TLP632 photoelectrical coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820813535.4U CN208399618U (en) | 2018-05-29 | 2018-05-29 | A kind of real-time inspection and control device of electrical equipment grounding state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820813535.4U CN208399618U (en) | 2018-05-29 | 2018-05-29 | A kind of real-time inspection and control device of electrical equipment grounding state |
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| Publication Number | Publication Date |
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| CN208399618U true CN208399618U (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820813535.4U Active CN208399618U (en) | 2018-05-29 | 2018-05-29 | A kind of real-time inspection and control device of electrical equipment grounding state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064160A (en) * | 2019-12-24 | 2020-04-24 | 深圳供电局有限公司 | Mobile distribution box |
| CN111983396A (en) * | 2020-07-16 | 2020-11-24 | 中广核核电运营有限公司 | Electric high-voltage test area safety protection system |
-
2018
- 2018-05-29 CN CN201820813535.4U patent/CN208399618U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064160A (en) * | 2019-12-24 | 2020-04-24 | 深圳供电局有限公司 | Mobile distribution box |
| CN111983396A (en) * | 2020-07-16 | 2020-11-24 | 中广核核电运营有限公司 | Electric high-voltage test area safety protection system |
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