CN107632226A - A kind of electrical safety on-line monitoring equipment - Google Patents
A kind of electrical safety on-line monitoring equipment Download PDFInfo
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- CN107632226A CN107632226A CN201710719500.4A CN201710719500A CN107632226A CN 107632226 A CN107632226 A CN 107632226A CN 201710719500 A CN201710719500 A CN 201710719500A CN 107632226 A CN107632226 A CN 107632226A
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- current sensor
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- line monitoring
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Abstract
The invention discloses a kind of electrical safety on-line monitoring equipment, current sensor that the electrical safety on-line monitoring equipment includes being arranged on electrical equipment L lines, be arranged on electrical equipment L lines and leakage current sensor on N lines, be serially connected in electrical equipment L lines and the solid-state relay on N lines, the control module being connected with current sensor and leakage current sensor and solid-state relay circuit, the communication module that is connected on control module output port, the control module also with PE lines and electrical equipment cage connection.A kind of electrical safety on-line monitoring equipment of the present invention by monitoring the circuit condition of electrical equipment in real time, and according to current value, the size of resistance value and change rate forecast short circuit, the generation of electric leakage and PE loops connection state, corresponding break-make control and warning information issue are carried out further according to short circuit, leakage current trend prediction result and PE connections, it can be controlled when electrical equipment has and endangers occurrence tendency, so as to avoid the generation of infringement.
Description
Technical field
The present invention relates to a kind of electrical safety monitoring device, more particularly to a kind of electrical safety on-line monitoring equipment.
Background technology
Short circuit, overload are one of main reasons of electrical fire, and the stream that gets an electric shock is then the direct performance that personnel get an electric shock.Because by
Environment is influenceed, and the insulating barrier of electrical equipment is easily damaged, and the accident significant portion in power system is precisely due to apparatus insulated damage
Caused by bad, apparatus insulated damage most directly performance and electric leakage.Existing electrical control gear, for example, air switch, heat after
Electric prospection switch, earth leakage circuit-breaker etc., all it is in the case where short circuit and electric leakage have occurred and that, passively takes measures, though
It so can to a certain extent play a protective role, but can not fundamentally prevent the generation of short circuit and electric leakage infringement, this is from electric
Security incident still constantly can be obtained by evidence, therefore timely, effective prediction and prevention and control are carried out to it just particularly
It is necessary.Meanwhile the PE loops detection of electrical equipment has great significance to Electrical Safety, but lack at present to electrical equipment
PE loops under online high-pressure situations are detected in real time, therefore the situation for personnel's electric shock easily occur occurs, and is unfavorable for from system angle
Degree solves electrical safety problems.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of electrical safety on-line monitoring equipment, and it can be by monitoring electricity
The line current of gas equipment, resistance situation, and short circuit, electric leakage prediction, PE loops are made according to electric current, resistance variations trend in time
Connection judges and prevention and control processing.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
A kind of electrical safety on-line monitoring equipment, including be arranged on electrical equipment L lines current sensor, be arranged on electricity consumption and set
Standby L lines and leakage current sensor on N lines, it is serially connected in electrical equipment L lines and solid-state relay and current sensor on N lines
The control module connected with leakage current sensor with solid-state relay circuit, the communication mould being connected on control module output port
Block, the control module also with PE lines and electrical equipment cage connection, are set between the leakage current sensor and control module
Proportional operational amplifier, the current sensor is to detect electric current, and the leakage current sensor is to detect leakage current, institute
State solid-state relay to break-make control, the control module to receive current signal, detection resistance and make short circuit and leakage
Electric trend prediction and output monitoring information and control signal, the communication module interconnect control module output information to be accessed
Net.A kind of electrical safety on-line monitoring equipment of the present invention monitors electrical equipment in real time by current sensor and leakage current sensor
Line current, control module while passes through control module according to current value size and change rate forecast short circuit, the generation of electric leakage
Connection resistance between on-line checking electrical equipment PE lines and N lines and electrical equipment shell judges PE connection states, and can root
Operate solid-state relay progress break-make control according to short circuit, leakage current trend prediction result and PE connection judgments and pass through communication
Module carries out warning information issue, can have short circuit, electric leakage, PE bad connection occurrence tendencies but without dead short and leakage
Electricity harm takes measures in the case of occurring, the infringement at utmost preventing short circuit, electric leakage, PE bad connections from triggering.
Preferably, the current sensor is Hall current sensor, and its model WCS1600, sensor measurement
Scope is wide, fast response time, and measurement accuracy is high, and the linearity is good, and dynamic property is good, and working band is wide.
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, 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 of electrical safety on-line monitoring equipment of the present invention：By monitoring in real time
The circuit condition of electrical equipment, and returned according to current value, the size of resistance value and change rate forecast short circuit, the generation of electric leakage and PE
Road connection state, corresponding break-make control and early warning are carried out further according to short circuit, leakage current trend prediction result and PE connections
Information is issued, and can be controlled when electrical equipment has and endangers occurrence tendency, so as to avoid the generation of infringement.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of schematic diagram of electrical safety on-line monitoring equipment of the present invention.
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 electrical safety on-line monitoring equipment of the present invention, including the electricity being arranged on electrical equipment L lines
Flow sensor, it is arranged on electrical equipment L lines and leakage current sensor on N lines, is serially connected in consolidating on electrical equipment L lines and N lines
State relay, the control module being connected with current sensor and leakage current sensor and solid-state relay circuit, it is connected to control
Communication module on module output port, the control module also spread with PE lines and electrical equipment cage connection, the electric leakage
It is provided with proportion operational amplifier between sensor and control module, the current sensor is detecting electric current, the leakage current
To detect leakage current, the solid-state relay controls sensor to break-make, the control module to receive current signal,
Detection resistance simultaneously makes short circuit and electric leakage trend prediction and output monitoring information and control signal, and the communication module is to will control
Molding block output information accesses internet.Wherein, L lines are live wire, N lines are zero line, PE lines are ground protection line.Using process
In, current sensor is contactless inductive to the electric current progress in L lines, and L line currents are switched into voltage output and are sent into control module
It is acquired, i.e., electrical equipment to be detected gathers signal by current sensor and analyzed by control module, passes through
The absolute value and rate of change of curent change predict the generation of short circuit with the extent of deviation of normal variation trend；Leakage current sensor
Contactless inductive, its output satisfaction peace times loop theorem, by amplification is carried out to the current differential in electrical equipment L lines and N lines
It is sent into control module after device to be acquired, i.e., electrical equipment to be detected gathers signal by leakage current sensor and passes through control
Module is analyzed, and electric leakage is predicted by the absolute value and rate of change of curent change and the extent of deviation of normal variation trend
Occur；Pass through the connection resistance between control module on-line checking electrical equipment PE lines and N lines and electrical equipment shell, electricity simultaneously
Hinder it is smaller show that connection state is better, so as to judge the connection states of PE lines real-time.
As shown in figure 1, in a kind of electrical safety on-line monitoring equipment of the present invention, the current sensor passes for Hall current
Sensor, its model WCS1600, the leakage current sensor are Hall type leakage current sensor, and the control module is monolithic
Machine, the single-chip microcomputer model STC15W408AS.The communication module is connected by internet and user PC ends or mobile terminal
Connect, the communication module is that RS485 turns RJ45 communication modules, and the RS485 turns RJ45 communication module models LAN8720.Institute
State control module and be connected with pre-alarm display device, the exportable multistage pre-warning signal of pre-alarm display device is shown, when predicting
After short circuit, electric leakage occurrence tendency, three-level early warning can be divided, level representative has short circuit, electric leakage trend but not dangerous, and prediction signal passes through
1 grade of early warning shows signal end output；Two level, which represents, short circuit, electric leakage trend and dangerous, and prediction signal is shown by 2 grades of early warning
Signal end exports；Three-level, which represents, to be had short circuit, electric leakage trend and will occur, and prediction signal shows that signal end is defeated by 3 grades of early warning
Go out；When reaching three-level early warning, automatically shut power off, protect property and life.If control module detects PE, line connects out present situation
Condition, pre-warning signal is sent, prevent from coming to harm because PE loose contacts cause personnel to get an electric shock.The control module is also associated with electrically
Resume operation switch.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, every spirit in the present invention
With all any modification, equivalent and improvement made within principle etc., it should be included in the scope of the protection.
Claims (10)
- A kind of 1. electrical safety on-line monitoring equipment, it is characterised in that：Including the current sense being arranged on electrical equipment L lines Device, the solid-state relay for being arranged on electrical equipment L lines and leakage current sensor on N lines, being serially connected on electrical equipment L lines and N lines Device, the control module being connected with current sensor and leakage current sensor and solid-state relay circuit, to be connected to control module defeated Communication module in exit port, the control module also with PE lines and electrical equipment cage connection, the leakage current sensor and It is provided with proportion operational amplifier between control module, the current sensor is detecting electric current, the leakage current sensor To detect leakage current, the solid-state relay controls to break-make, and the control module is receiving current signal, detection electricity Hinder and make short circuit and electric leakage trend prediction and output monitoring information and control signal, the communication module is to by control module Output information accesses internet.
- A kind of 2. electrical safety on-line monitoring equipment according to claim 1, it is characterised in that：The current sensor is Hall current sensor, its model WCS1600.
- A kind of 3. electrical safety on-line monitoring equipment according to claim 1, it is characterised in that：The leakage current sensor For Hall type leakage current sensor.
- A kind of 4. electrical safety on-line monitoring equipment according to claim 1, it is characterised in that：The control module is single Piece machine, the single-chip microcomputer model STC15W408AS.
- A kind of 5. electrical safety on-line monitoring equipment according to claim 1, it is characterised in that：The communication module passes through Internet is connected with user PC ends or mobile terminal.
- A kind of 6. electrical safety on-line monitoring equipment according to claim 1 or 5, it is characterised in that：The communication module Turn RJ45 communication modules for RS485.
- A kind of 7. electrical safety on-line monitoring equipment according to claim 6, it is characterised in that：The RS485 turns RJ45 Communication module model LAN8720.
- A kind of 8. electrical safety on-line monitoring equipment according to claim 1, it is characterised in that：The control module connection There is pre-alarm display device.
- A kind of 9. electrical safety on-line monitoring equipment according to claim 8, it is characterised in that：The pre-alarm display device Exportable multistage pre-warning signal is shown.
- A kind of 10. electrical safety on-line monitoring equipment according to claim 1 or 4 or 8, it is characterised in that：The control Module is also associated with the switch that electrically resumes operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719500.4A CN107632226A (en) | 2017-08-21 | 2017-08-21 | A kind of electrical safety on-line monitoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719500.4A CN107632226A (en) | 2017-08-21 | 2017-08-21 | A kind of electrical safety on-line monitoring equipment |
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| Publication Number | Publication Date |
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| CN107632226A true CN107632226A (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710719500.4A Pending CN107632226A (en) | 2017-08-21 | 2017-08-21 | A kind of electrical safety on-line monitoring equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161332A (en) * | 2019-05-22 | 2019-08-23 | 安徽升隆电气有限公司 | A kind of electrical safety on-Line Monitor Device |
| CN110634271A (en) * | 2018-06-21 | 2019-12-31 | 佛山市顺德区美的电热电器制造有限公司 | Cooking equipment safety early warning method, device, equipment and system |
| CN112712664A (en) * | 2020-12-28 | 2021-04-27 | 云南电网有限责任公司电力科学研究院 | Electrical fire early warning method and system |
| CN112837492A (en) * | 2021-03-01 | 2021-05-25 | 合肥依科普工业设备有限公司 | Electric arc fire alarm instrument |
| CN114566878A (en) * | 2022-03-08 | 2022-05-31 | 东营金丰正阳科技发展有限公司 | Intelligent fire-fighting electrical control equipment for oil field and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553206A (en) * | 2003-12-18 | 2004-12-08 | 西安交通大学 | Electric power apparatus external insulative leakage current on-line monitoring system in converting station |
| CN1888925A (en) * | 2005-06-29 | 2007-01-03 | 陕西蓝河电气工程有限公司 | Fault current fast identifying circuit |
| CN101329381A (en) * | 2008-07-28 | 2008-12-24 | 庞元俊 | Method for detecting short circuit fault with current change rate |
| CN203415061U (en) * | 2013-07-17 | 2014-01-29 | 厦门大恒科技有限公司 | Intelligent electrical fire hazard monitoring device |
| CN104515922A (en) * | 2013-09-26 | 2015-04-15 | 青岛鸿森重工有限公司 | Power supply supervision apparatus for construction machinery |
| CN105680416A (en) * | 2016-03-22 | 2016-06-15 | 首瑞（天津）电气设备有限公司 | Residual current protector |
-
2017
- 2017-08-21 CN CN201710719500.4A patent/CN107632226A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553206A (en) * | 2003-12-18 | 2004-12-08 | 西安交通大学 | Electric power apparatus external insulative leakage current on-line monitoring system in converting station |
| CN1888925A (en) * | 2005-06-29 | 2007-01-03 | 陕西蓝河电气工程有限公司 | Fault current fast identifying circuit |
| CN101329381A (en) * | 2008-07-28 | 2008-12-24 | 庞元俊 | Method for detecting short circuit fault with current change rate |
| CN203415061U (en) * | 2013-07-17 | 2014-01-29 | 厦门大恒科技有限公司 | Intelligent electrical fire hazard monitoring device |
| CN104515922A (en) * | 2013-09-26 | 2015-04-15 | 青岛鸿森重工有限公司 | Power supply supervision apparatus for construction machinery |
| CN105680416A (en) * | 2016-03-22 | 2016-06-15 | 首瑞（天津）电气设备有限公司 | Residual current protector |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634271A (en) * | 2018-06-21 | 2019-12-31 | 佛山市顺德区美的电热电器制造有限公司 | Cooking equipment safety early warning method, device, equipment and system |
| CN110634271B (en) * | 2018-06-21 | 2022-01-25 | 佛山市顺德区美的电热电器制造有限公司 | Cooking equipment safety early warning method, device, equipment and system |
| CN110161332A (en) * | 2019-05-22 | 2019-08-23 | 安徽升隆电气有限公司 | A kind of electrical safety on-Line Monitor Device |
| CN112712664A (en) * | 2020-12-28 | 2021-04-27 | 云南电网有限责任公司电力科学研究院 | Electrical fire early warning method and system |
| CN112837492A (en) * | 2021-03-01 | 2021-05-25 | 合肥依科普工业设备有限公司 | Electric arc fire alarm instrument |
| CN114566878A (en) * | 2022-03-08 | 2022-05-31 | 东营金丰正阳科技发展有限公司 | Intelligent fire-fighting electrical control equipment for oil field and control method thereof |
| CN114566878B (en) * | 2022-03-08 | 2022-11-04 | 东营金丰正阳科技发展有限公司 | Control method of intelligent fire-fighting electrical control equipment for oil field |
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Application publication date: 20180126 |