CN207148256U - One kind electric leakage on-line monitoring device - Google Patents
One kind electric leakage on-line monitoring device Download PDFInfo
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- CN207148256U CN207148256U CN201721047817.XU CN201721047817U CN207148256U CN 207148256 U CN207148256 U CN 207148256U CN 201721047817 U CN201721047817 U CN 201721047817U CN 207148256 U CN207148256 U CN 207148256U
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- electric leakage
- monitoring device
- line monitoring
- control module
- leakage current
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Abstract
The utility model discloses one kind electric leakage on-line monitoring device, the electric leakage on-line monitoring device includes being arranged on electrical equipment L lines and leakage current sensor on N lines, is serially connected in electrical equipment L lines and the solid-state relay on N lines, the control module being connected with leakage current sensor and solid-state relay circuit, the communication module that is connected on control module output port, and proportion operational amplifier is provided between the leakage current sensor and control module.A kind of electric leakage on-line monitoring device of the utility model by monitoring leakage current in real time, and the generation leaked electricity according to current value size and change rate forecast, and corresponding break-make control and warning information issue are carried out according to leakage current trend prediction result, it can be taken measures before thering is electric leakage harm to occur, the infringement at utmost preventing electric leakage from triggering.
Description
Technical field
A kind of electrical safety monitoring device is the utility model is related to, more particularly to one kind electric leakage on-line monitoring device.
Background technology
Because affected by environment, the insulating barrier of electrical equipment is easily damaged, the accident significant portion in power system be exactly by
Caused by apparatus insulated damage, apparatus insulated damage most directly performance and electric leakage.Existing electrical control gear, for example leak
Electric protective circuit breaker etc., all it is in the case where electric leakage harm has occurred and that, passively takes measures, although can rise to a certain extent
To protective effect, but it can not fundamentally prevent the generation of electric leakage infringement, this still occurs just from electrical safety accident continuous
It can be proved, it is therefore desirable to timely, effective prediction and prevention and control are carried out to it.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of electric leakage on-line monitoring device, and it can be used by monitoring
The line electrical leakage stream of electric equipment, and electric leakage prediction and prevention and control processing are made according to the variation tendency of leakage current in time.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme that：
One kind electric leakage on-line monitoring device, including it is arranged on electrical equipment L lines and leakage current sensor on N lines, concatenation
Solid-state relay on electrical equipment L lines and N lines, the control mould being connected with leakage current sensor and solid-state relay circuit
Block, the communication module being connected on control module output port, are provided with ratio between the leakage current sensor and control module
Example operational amplifier, the leakage current sensor is to detect leakage current, and the solid-state relay controls to break-make, the control
Molding block is receiving the signal of leakage current sensor and make electric leakage trend prediction and output monitoring information and control signal, institute
Communication module is stated control module output information is accessed into internet.A kind of electric leakage on-line monitoring device of the utility model passes through
Current sensor monitors the line electrical leakage stream of electrical equipment in real time, and control module is leaked electricity according to current value size and change rate forecast
Generation, and break-make control can be carried out according to leakage current trend prediction results operation solid-state relay and be entered by communication module
Row warning information is issued, and can be taken measures before having electric leakage harm to occur, the infringement at utmost preventing electric leakage from triggering.
Preferably, the leakage current sensor is Hall type leakage current sensor, the sensor can detect minimum
As low as 1mA leakage current.
Preferably, the control module is single-chip microcomputer.
Preferably, the single-chip microcomputer model STC15W408AS.
Preferably, the communication module is connected by internet with user PC ends or mobile terminal, it is easy to user to carry out
Remote information monitors.
Preferably, the communication module, which is RS485, turns RJ45 communication modules.
Preferably, the RS485 turns RJ45 communication module models LAN8720.
Preferably, the control module is connected with pre-alarm display device, it is easy to user timely, intuitively to obtain early warning letter
Breath.
Preferably, the exportable multistage pre-warning signal of pre-alarm display device is shown, be advantageous to user and obtain essence in time
True monitoring and warning information.
Preferably, the control module is also associated with the switch that electrically resumes operation, when electric state passes through manual maintenance
Recover normal, can be allowed by switch and electrically resumed operation.
Compared with prior art, a kind of beneficial effect for the on-line monitoring device that leaks electricity of the utility model：By monitoring in real time
Leakage current, and the generation leaked electricity according to current value size and change rate forecast, are carried out further according to leakage current trend prediction result
Corresponding break-make control and warning information issue, it can be taken measures before thering is electric leakage harm to occur, at utmost prevent electric leakage from drawing
The infringement of hair.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of schematic diagram for the on-line monitoring device that leaks electricity of the utility model.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
As shown in figure 1, a kind of electric leakage on-line monitoring device of the utility model, including be arranged on electrical equipment L lines and N lines
Leakage current sensor, be serially connected in electrical equipment L lines and solid-state relay on N lines, with leakage current sensor and solid-state relay
The control module of device circuit connection, the communication module being connected on control module output port, the leakage current sensor and control
It is provided with proportion operational amplifier between molding block, the leakage current sensor is detecting leakage current, the solid-state relay
Controlled to break-make, the control module is supervised to receive the signal of leakage current sensor and make electric leakage trend prediction and export
Measurement information and control signal, the communication module to by control module output information access internet.Wherein, L lines be live wire,
N lines are zero line, PE lines are ground protection line.In use, leakage current sensor is to the electricity in electrical equipment L lines and N lines
Flow difference and carry out contactless inductive, its output satisfaction peace times loop theorem, being sent into control module after amplifier is acquired,
Electrical equipment i.e. to be detected gathers signal by leakage current sensor and analyzed by control module, passes through curent change
Absolute value and the extent of deviation of rate of change and normal variation trend predict the generation of electric leakage.
As shown in figure 1, in a kind of electric leakage on-line monitoring device of the utility model, the leakage current sensor leaks for Hall type
Current sensor, the control module are single-chip microcomputer, the single-chip microcomputer model STC15W408AS.The communication module passes through
Internet is connected with user PC ends or mobile terminal, and the communication module is that RS485 turns RJ45 communication modules, and the RS485 turns
RJ45 communication module models LAN8720.The control module is connected with pre-alarm display device, and the pre-alarm display device can be defeated
Go out multistage pre-warning signal to show, after electric leakage occurrence tendency is predicted, three-level early warning can be divided, level representative has electric leakage trend but not
Danger, prediction signal show that signal end exports by 1 grade of early warning；Two level, which represents, electric leakage trend and dangerous, and prediction signal is led to
Cross 2 grades of early warning and show signal end output；Three-level, which represents, to be had electric leakage trend and will occur, and prediction signal is shown by 3 grades of early warning
Signal end exports；When reaching three-level early warning, automatically shut power off, protect property and life.The control module is also associated with electricity
Gas resumes operation switch.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, every the present invention's
All any modification, equivalent and improvement made within spirit and principle etc., should be included in the scope of the protection.
Claims (10)
1. one kind electric leakage on-line monitoring device, it is characterised in that：Electric leakage including being arranged on electrical equipment L lines and N lines is spread
Sensor, it is serially connected in electrical equipment L lines and solid-state relay on N lines, is connected with leakage current sensor and solid-state relay circuit
Control module, the communication module that is connected on control module output port, between the leakage current sensor and control module
Proportion operational amplifier is provided with, the leakage current sensor is to detect leakage current, and the solid-state relay is to break-make control
System, the control module is receiving the signal of leakage current sensor and make electric leakage trend prediction and output monitoring information and control
Signal processed, the communication module to by control module output information access internet.
A kind of 2. electric leakage on-line monitoring device according to claim 1, it is characterised in that：The leakage current sensor is suddenly
That type leakage current sensor.
A kind of 3. electric leakage on-line monitoring device according to claim 1, it is characterised in that：The control module is monolithic
Machine.
A kind of 4. electric leakage on-line monitoring device according to claim 3, it is characterised in that：The single-chip microcomputer model
STC15W408AS。
A kind of 5. electric leakage on-line monitoring device according to claim 1, it is characterised in that：The communication module passes through interconnection
Net is connected with user PC ends or mobile terminal.
A kind of 6. electric leakage on-line monitoring device according to claim 1 or 5, it is characterised in that：The communication module is
RS485 turns RJ45 communication modules.
A kind of 7. electric leakage on-line monitoring device according to claim 6, it is characterised in that：The RS485 turns RJ45 communications
Module model LAN8720.
A kind of 8. electric leakage on-line monitoring device according to claim 1, it is characterised in that：The control module is connected with pre-
Alert display device.
A kind of 9. electric leakage on-line monitoring device according to claim 8, it is characterised in that：The pre-alarm display device can be defeated
Go out multistage pre-warning signal to show.
A kind of 10. electric leakage on-line monitoring device according to claim 1 or 3 or 8, it is characterised in that：The control module
It is also associated with the switch that electrically resumes operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721047817.XU CN207148256U (en) | 2017-08-21 | 2017-08-21 | One kind electric leakage on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721047817.XU CN207148256U (en) | 2017-08-21 | 2017-08-21 | One kind electric leakage on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207148256U true CN207148256U (en) | 2018-03-27 |
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ID=61667136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721047817.XU Active CN207148256U (en) | 2017-08-21 | 2017-08-21 | One kind electric leakage on-line monitoring device |
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| Country | Link |
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| CN (1) | CN207148256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114545289A (en) * | 2022-03-15 | 2022-05-27 | 河南新网元通信技术有限公司 | Online detector capable of distinguishing leakage state and capable of being connected to network |
-
2017
- 2017-08-21 CN CN201721047817.XU patent/CN207148256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114545289A (en) * | 2022-03-15 | 2022-05-27 | 河南新网元通信技术有限公司 | Online detector capable of distinguishing leakage state and capable of being connected to network |
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