CN112510822A - Intelligent circuit breaker with early warning function - Google Patents
Intelligent circuit breaker with early warning function Download PDFInfo
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- CN112510822A CN112510822A CN202011277328.XA CN202011277328A CN112510822A CN 112510822 A CN112510822 A CN 112510822A CN 202011277328 A CN202011277328 A CN 202011277328A CN 112510822 A CN112510822 A CN 112510822A
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- single chip
- chip microcomputer
- early warning
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- circuit breaker
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- 230000003321 amplification Effects 0.000 claims abstract description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 12
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The technical scheme for solving the technical problems is as follows: the intelligent circuit breaker with the early warning function comprises a single chip microcomputer, wherein the input end of the single chip microcomputer is respectively connected with two I/V conversion circuits, a voltage transformer and a signal amplification circuit, and the output end of the single chip microcomputer is connected with an electromagnetic execution unit; the two I/V conversion circuits are respectively connected with a current transformer and a residual current transformer and are respectively used for collecting current information and leakage current information in a circuit and inputting the current information and the leakage current information into the single chip microcomputer, and the single chip microcomputer compares the current early warning value with the residual current early warning value according to the preset current early warning value and sends out corresponding early warning information. The potential dangers of undervoltage, overvoltage, overcurrent, core overtemperature and residual current existing in a low-voltage line, an electric appliance or electric equipment can be found in time, and the potential dangers can be informed to a user or equipment management and operation and maintenance personnel in real time, so that the user or the equipment management and operation and maintenance personnel can make preparation work such as line maintenance and equipment maintenance in advance.
Description
Technical Field
The invention relates to the technical field of electronic appliances, in particular to an intelligent circuit breaker with an early warning function.
Background
The existing common low-voltage circuit breaker has short-circuit, overcurrent or residual current protection functions, and the existing common low-voltage circuit breaker can trip to break the power after short-circuit, overcurrent or residual current faults occur to electric appliances or electric equipment on the line or the circuit, so that the line and the electric appliances or the electric equipment are protected.
The latest intelligent low-voltage circuit breaker is added with the protection functions of remote control, remote monitoring or over-voltage, under-voltage, temperature and the like, but the circuit breaker can be tripped and cut off to protect the circuit and the electric appliances or the electric equipment after the electric equipment on the circuit or the circuit is in short circuit, over-current or residual current fault.
The conventional common low-voltage circuit breaker or the intelligent low-voltage circuit breaker of the latest patent can be tripped for protection after a fault occurs, and belongs to 'after-the-fact protection'. Many of the faults are slowly formed and gradually increased and are hidden in a line or an electric appliance or electric equipment for a long time, potential dangers exist in the line or the electric appliance or the electric equipment during the time, the existing ordinary and intelligent low-voltage circuit breakers cannot find the dangers, and the protection effect can be achieved only when the dangers are large enough to reach the protection value of the existing circuit breaker. Many of these times will cause certain property loss and even personal safety accidents.
Disclosure of Invention
The invention provides an intelligent circuit breaker with an early warning function, aiming at the technical problems in the prior art, which can timely find potential dangers of undervoltage, overvoltage, overcurrent, core overtemperature and residual current of a low-voltage circuit, an electric appliance or electric equipment, and can inform users or equipment management and operation and maintenance personnel of the potential dangers in real time, so that the users or the equipment management and operation and maintenance personnel can make preparations for circuit maintenance, equipment maintenance and the like in advance to prevent accidents from happening and eliminate accidents in a bud state. And all the early warning states do not trip for protection, power is supplied as usual, only early warning information is sent out, and power-off protection is carried out only when the protection value of the national standard is reached.
The technical scheme for solving the technical problems is as follows: the intelligent circuit breaker with the early warning function comprises a single chip microcomputer, wherein the input end of the single chip microcomputer is respectively connected with two I/V conversion circuits, a voltage transformer and a signal amplification circuit, and the output end of the single chip microcomputer is connected with an electromagnetic execution unit; the two I/V conversion circuits are respectively connected with a current transformer and a residual current transformer, and are respectively used for acquiring current information and leakage current information in a circuit and inputting the current information and the leakage current information into the singlechip; the signal amplification circuit is connected with a temperature sensor; the temperature sensor acquires temperature information of an output terminal of the circuit breaker, the temperature information is processed by the signal amplification circuit and then input to the single chip microcomputer, and the single chip microcomputer compares the temperature information according to a preset early warning temperature value and sends corresponding early warning information; the voltage transformer collects the voltage at the input end of the circuit breaker and inputs the voltage to the single chip microcomputer, and the single chip microcomputer compares the input voltage with a preset undervoltage early warning value and an overvoltage early warning value and sends corresponding early warning information; when the early warning information exceeds a set trigger value, alarm information is sent out, and a single chip microcomputer sends out a control command to an electromagnetic execution unit.
Preferably, a resistor is arranged between the voltage transformer and the single chip microcomputer, and the resistor is used for converting the mA-level direct current output by the voltage transformer into direct current voltage through the resistor and inputting the direct current voltage into the single chip microcomputer.
Preferably, the output end of the single chip microcomputer is further connected with a communication unit, the communication unit is connected with a mobile terminal, and the mobile terminal checks result information obtained by comparing preset data values with acquired real-time data in the single chip microcomputer in real time so as to receive early warning information and alarm information conveniently.
Preferably, the mobile terminal sends a control command to the single chip microcomputer by acquiring data processing result information of the single chip microcomputer, and the single chip microcomputer outputs the control command to the electromagnetic execution unit to control the on-off state of the circuit breaker.
The invention has the beneficial effects that: the invention provides an intelligent circuit breaker with an early warning function, which can timely find potential dangers of undervoltage, overvoltage, overcurrent, core overtemperature and residual current existing in a low-voltage line, an electric appliance or electric equipment, and can inform a user or equipment management and operation and maintenance personnel of the potential dangers in real time, so that the user or equipment management and operation and maintenance personnel can prepare line maintenance, equipment maintenance and the like in advance to prevent accidents from happening, and the accidents are eliminated in a bud state. And all the early warning states do not trip for protection, power is supplied as usual, only early warning information is sent out, and power-off protection is carried out only when the protection value of the national standard is reached.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the embodiment discloses an intelligent circuit breaker with an early warning function, which includes a single chip, wherein the input end of the single chip is respectively connected with two I/V conversion circuits, a voltage transformer and a signal amplification circuit, and the output end of the single chip is connected with an electromagnetic execution unit; the two I/V conversion circuits are respectively connected with a current transformer and a residual current transformer, and are respectively used for acquiring current information and leakage current information in a circuit and inputting the current information and the leakage current information into the singlechip; the signal amplification circuit is connected with a temperature sensor; the temperature sensor acquires temperature information of an output terminal of the circuit breaker, the temperature information is processed by the signal amplification circuit and then input to the single chip microcomputer, and the single chip microcomputer compares the temperature information according to a preset early warning temperature value and sends corresponding early warning information; the voltage transformer collects the voltage at the input end of the circuit breaker and inputs the voltage to the single chip microcomputer, and the single chip microcomputer compares the input voltage with a preset undervoltage early warning value and an overvoltage early warning value and sends corresponding early warning information; when the early warning information exceeds a set trigger value, alarm information is sent out, and a single chip microcomputer sends out a control command to an electromagnetic execution unit.
In the embodiment, undervoltage, overvoltage, overcurrent, core overtemperature and residual current information existing in a circuit and electric equipment are collected in real time, are sent to a single chip microcomputer after certain processing, are compared with various set contrast values, only send corresponding early warning information when the certain contrast values are not exceeded, send corresponding warning information when the certain contrast values are exceeded, and start a corresponding control program.
Wherein, in the early warning stage, the following conditions are divided:
early warning of under voltage and over voltage: the voltage of a power grid can fluctuate at any time, the voltage at the input end of the circuit breaker is detected through the isolated voltage transformer, the voltage transformer outputs a direct current with mA level, the current is converted into direct current voltage through a resistor and then is input into the single chip microcomputer, and the single chip microcomputer compares the input voltage with a preset undervoltage early warning value and an overvoltage early warning value and sends out undervoltage and overvoltage early warning information.
Residual current early warning: in the actual use process of the electric appliance or the electric equipment, the electric appliance elements and the wire and cable insulation layer slowly age along with the time. As the insulation layer gradually ages, leakage current is gradually generated from the line to the ground, and the leakage current gradually increases to reach the national standard protection value, so that the circuit breaker is in trip protection. The signal that this embodiment was adopted the residual current transformer of circuit breaker is through a series of processings back, inputs the singlechip, and the singlechip is compared the back with the residual current early warning value of presetting, sends residual current early warning information.
Binding post (sinle silk) excess temperature early warning: under the long-term overload of circuit or long-term heavy current operation, wire cable's sinle silk temperature can rise gradually, perhaps the input/output terminal of circuit breaker causes meeting reasons such as contact resistance increase because of reasons such as contact failure, oxidation, also can cause the terminal temperature to rise, the temperature signal of the circuit breaker output terminal that this embodiment was collected with temperature sensor is after a series of processings, input the singlechip, the singlechip is compared the back with the residual current early warning value of preset, sends excess temperature early warning information.
Overcurrent early warning: in the embodiment, a line load current signal acquired by the current transformer is input into the single chip microcomputer after being processed in a series, and the single chip microcomputer sends overload early warning information after being compared with a preset current early warning value.
Preferably, a resistor is arranged between the voltage transformer and the single chip microcomputer, and the resistor is used for converting the mA-level direct current output by the voltage transformer into direct current voltage through the resistor and inputting the direct current voltage into the single chip microcomputer.
Preferably, the output end of the single chip microcomputer is further connected with a communication unit, the communication unit is connected with a mobile terminal, and the mobile terminal checks result information obtained by comparing preset data values with acquired real-time data in the single chip microcomputer in real time so as to receive early warning information and alarm information conveniently.
Preferably, the mobile terminal sends a control command to the single chip microcomputer by acquiring data processing result information of the single chip microcomputer, and the single chip microcomputer outputs the control command to the electromagnetic execution unit to control the on-off state of the circuit breaker.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The intelligent circuit breaker with the early warning function is characterized by comprising a single chip microcomputer, wherein the input end of the single chip microcomputer is respectively connected with two I/V conversion circuits, a voltage transformer and a signal amplification circuit, and the output end of the single chip microcomputer is connected with an electromagnetic execution unit; the two I/V conversion circuits are respectively connected with a current transformer and a residual current transformer, and are respectively used for acquiring current information and leakage current information in a circuit and inputting the current information and the leakage current information into the singlechip; the signal amplification circuit is connected with a temperature sensor; the temperature sensor acquires temperature information of an output terminal of the circuit breaker, the temperature information is processed by the signal amplification circuit and then input to the single chip microcomputer, and the single chip microcomputer compares the temperature information according to a preset early warning temperature value and sends corresponding early warning information; the voltage transformer collects the voltage at the input end of the circuit breaker and inputs the voltage to the single chip microcomputer, and the single chip microcomputer compares the input voltage with a preset undervoltage early warning value and an overvoltage early warning value and sends corresponding early warning information; when the early warning information exceeds a set trigger value, alarm information is sent out, and a single chip microcomputer sends out a control command to an electromagnetic execution unit.
2. The intelligent circuit breaker with the early warning function according to claim 1, wherein a resistor is arranged between the voltage transformer and the single chip microcomputer, and the resistor is used for converting the mA-level direct current output by the voltage transformer into direct current voltage through the resistor and inputting the direct current voltage to the single chip microcomputer.
3. The intelligent circuit breaker with the early warning function according to claim 2, wherein the output end of the single chip microcomputer is further connected with a communication unit, the communication unit is connected with a mobile terminal, and the mobile terminal checks result information obtained by comparing preset data values with acquired real-time data in the single chip microcomputer in real time so as to receive early warning information and alarm information.
4. The intelligent circuit breaker with the early warning function according to claim 3, wherein the mobile terminal sends a control command to the single chip microcomputer by acquiring data processing result information of the single chip microcomputer, and the single chip microcomputer outputs the control command to the electromagnetic execution unit to control the on-off state of the circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277328.XA CN112510822A (en) | 2020-11-16 | 2020-11-16 | Intelligent circuit breaker with early warning function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277328.XA CN112510822A (en) | 2020-11-16 | 2020-11-16 | Intelligent circuit breaker with early warning function |
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| CN112510822A true CN112510822A (en) | 2021-03-16 |
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| CN202011277328.XA Pending CN112510822A (en) | 2020-11-16 | 2020-11-16 | Intelligent circuit breaker with early warning function |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201174571Y (en) * | 2008-03-31 | 2008-12-31 | 林龙杰 | Micro circuit breaker having micro-computer protection and liquid crystal display |
| CN201430470Y (en) * | 2009-06-29 | 2010-03-24 | 西安兴汇电力科技有限公司 | Non-outrage load transfer system of high-voltage network distribution circuit |
| CN106208390A (en) * | 2016-09-12 | 2016-12-07 | 北京师范大学 | A kind of monitoring system and method for distribution box running status |
| CN106685080A (en) * | 2016-12-09 | 2017-05-17 | 国网北京市电力公司 | Circuit breaker and control system thereof |
| CN109035839A (en) * | 2018-09-19 | 2018-12-18 | 冯国行 | A kind of comprehensive monitoring system and method for traffic signal devices electrical safety |
| CN110389255A (en) * | 2019-07-25 | 2019-10-29 | 国网江西省电力有限公司电力科学研究院 | A kind of method and device of on-line measurement Zinc-Oxide Arrester full working scope electric current |
| CN111665401A (en) * | 2020-06-13 | 2020-09-15 | 义乌市德义物联网科技有限公司 | Assembled low-voltage Internet of things intelligent monitoring system |
-
2020
- 2020-11-16 CN CN202011277328.XA patent/CN112510822A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201174571Y (en) * | 2008-03-31 | 2008-12-31 | 林龙杰 | Micro circuit breaker having micro-computer protection and liquid crystal display |
| CN201430470Y (en) * | 2009-06-29 | 2010-03-24 | 西安兴汇电力科技有限公司 | Non-outrage load transfer system of high-voltage network distribution circuit |
| CN106208390A (en) * | 2016-09-12 | 2016-12-07 | 北京师范大学 | A kind of monitoring system and method for distribution box running status |
| CN106685080A (en) * | 2016-12-09 | 2017-05-17 | 国网北京市电力公司 | Circuit breaker and control system thereof |
| CN109035839A (en) * | 2018-09-19 | 2018-12-18 | 冯国行 | A kind of comprehensive monitoring system and method for traffic signal devices electrical safety |
| CN110389255A (en) * | 2019-07-25 | 2019-10-29 | 国网江西省电力有限公司电力科学研究院 | A kind of method and device of on-line measurement Zinc-Oxide Arrester full working scope electric current |
| CN111665401A (en) * | 2020-06-13 | 2020-09-15 | 义乌市德义物联网科技有限公司 | Assembled low-voltage Internet of things intelligent monitoring system |
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