CN114884026A - Intelligent circuit breaker with arc light protection function - Google Patents
Intelligent circuit breaker with arc light protection function Download PDFInfo
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- CN114884026A CN114884026A CN202110163824.0A CN202110163824A CN114884026A CN 114884026 A CN114884026 A CN 114884026A CN 202110163824 A CN202110163824 A CN 202110163824A CN 114884026 A CN114884026 A CN 114884026A
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- arc
- current
- circuit breaker
- sensor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/226—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention discloses an intelligent circuit breaker with arc light protection, which comprises an auxiliary unit and a circuit breaker, wherein the auxiliary unit comprises an overcurrent sensor, a temperature sensor, arc light sensors 1-N and a current transformer, the overcurrent sensor is used for monitoring whether an overcurrent phenomenon exists in a circuit, the temperature sensor is used for monitoring the internal temperature of a switch cabinet, the arc light sensors 1-N are used for monitoring arc light faults, and the current transformer is used for converting a large current on a primary side into a small current on a secondary side to measure current; the intelligent arc extinguishing chamber can timely drive the motor to work to enable the arc extinguishing structure of the arc extinguishing chamber to be opened and the circuit to be cut off when overcurrent, overhigh temperature and arc light occur, current monitoring, temperature monitoring and arc light monitoring are carried out on outgoing lines, monitoring is more comprehensive, the guarantee effect is better, meanwhile, the intelligent arc extinguishing chamber also has a communication function, maintenance personnel can be timely prompted, in addition, the intelligent arc extinguishing chamber has the functions of alarming and networking, and the practicability and safety are higher.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to an intelligent circuit breaker with arc light protection.
Background
The circuit breaker, it can close, bear and break the current under the normal loop condition and can close, bear and break the switching device of the current under the abnormal loop condition in the stipulated time, the arc light, it is a radiation phenomenon caused by short circuit, the high temperature that the electric arc produces, can make the contact surface melt and evaporate, burn out the insulating material, will cause the danger such as the equipment catches fire, explodes, etc., and because the electric arc can move under electrodynamic force, heating power function, cause the short circuit of flying arc and injure people very easily, or cause the expansion of the accident, and the existing circuit breaker has arc extinguishing chambers inside, is used for monitoring the arc light and carrying on the breaking circuit while the arc light produces;
the existing intelligent circuit breaker has certain defects to be improved when in use. Firstly, an arc extinguishing mechanism in an existing intelligent circuit breaker arc extinguishing chamber can only monitor arc light inside a circuit breaker, but after a circuit breaker outgoing cable is long in service time, single-phase or interphase short circuit is easily caused due to aging, and the short circuit is characterized in that the outgoing cable has arc light, but the existing circuit breaker cannot perform arc light protection and is poor in use effect; secondly, the existing intelligent circuit breaker does not have communication, when arc light is generated, a maintenance person cannot be prompted to maintain, phenomena such as fire, burning out and the like caused by poor maintenance can occur, and the safety is poor; in addition, current intelligent circuit breaker can not carry out the network deployment, when this level circuit breaker refuses to move, can't send the tripping operation instruction to the last level circuit breaker, can appear because of this level circuit breaker trouble lead to the cubical switchboard whole phenomenon of burning out, firing, and the practicality is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the arc extinguishing mechanism in the existing intelligent circuit breaker arc extinguishing chamber can only monitor arc light in the circuit breaker, but after the circuit breaker outgoing cable is long in service time, single-phase or interphase short circuit is easily caused due to aging, and the short circuit is characterized in that the outgoing cable has arc light, but the existing circuit breaker cannot perform arc light protection and is poor in use effect; secondly, the existing intelligent circuit breaker does not have a communication function, when arc light is generated, a maintenance person cannot be prompted to maintain, phenomena such as fire, burning out and the like caused by poor maintenance can occur, and the safety is poor; in addition, current intelligent circuit breaker can not carry out the network deployment, when this level circuit breaker refuses to move, can't send the tripping command to the last level circuit breaker, can appear because of this level circuit breaker trouble leads to the phenomenon that the cubical switchboard is whole to burn out, on fire, and the practicality is poor.
The invention solves the technical problem through the following technical scheme, and the intelligent circuit breaker with arc light protection comprises an auxiliary unit and a circuit breaker, wherein the auxiliary unit comprises an overcurrent sensor, a temperature sensor, an arc light sensor 1-N and a current transformer;
the overcurrent sensor is used for monitoring whether the circuit has an overcurrent phenomenon;
the temperature sensor is used for monitoring the internal temperature of the switch cabinet;
the arc sensors 1-N are used for monitoring arc faults;
the current transformer is used for converting a large primary side current into a small secondary side current to measure current.
This level of circuit breaker includes singlechip, data acquisition module, measurement chip, communication module, data storage module, motor drive, direct current motor, explosion chamber, arc extinguishing structure, audible and visual alarm module, alarm lamp and bee calling organ, communication module includes infrared receiving and dispatching unit and WIFI communication unit.
The specific processing steps of the current-stage circuit breaker are as follows:
the method comprises the following steps: the data acquisition module acquires electrical signals from the over-current sensor, the temperature sensor and the arc light sensor 1-10, and the identification processing is carried out through the singlechip;
step two: the single chip microcomputer is identified and judged through a software program, when the phenomena of overcurrent, overhigh temperature, arc light and the like occur, the single chip microcomputer controls the motor to drive the direct current motor to work, the direct current motor drives the arc extinguishing structure in the arc extinguishing chamber to work, the circuit breaker is switched off, and the circuit is cut off;
step three: the data storage module stores the work record of the single-chip microcomputer, and sends the work record to the maintenance personnel terminal through the WIFI communication unit to indicate fault information of the maintenance personnel;
step four: the maintenance personnel can remotely control the operation through the infrared transceiving unit by infrared, and the direct current motor is driven to work again through the single chip microcomputer to carry out switching on;
step five: when the singlechip sends a closing instruction, the sound-light alarm module drives the alarm lamp and the buzzer to work and sends a sound-light alarm prompt;
step six: the metering chip collects the input current of the current transformer for metering and stores the input current through the data storage module.
The communication module further comprises a carrier communication unit and an antenna unit, wherein the carrier communication unit is used for networking the current-stage circuit breaker and the superior circuit breaker, and the antenna unit is used for enhancing the signal intensity.
The data storage module comprises a partition unit, an editing unit and a clock unit, wherein the partition unit partitions the stored data into an area a, an area b and an area c.
The number of the alarm lamps is three, and the three alarm lamps are respectively a temperature alarm lamp, an arc alarm lamp and an overcurrent alarm lamp.
In the auxiliary unit, the number of arc sensors is ten fixed arc sensors and one movable arc sensor, the number of arc warning lamps is eleven, and each arc warning lamp corresponds to one arc sensor.
Compared with the prior art, the invention has the following advantages:
by arranging the auxiliary unit, the circuit breaker can monitor arc light inside the circuit breaker, can also monitor arc light and overcurrent phenomena of the outgoing cable, and simultaneously monitor the temperature of the switch cabinet, when the overcurrent, the overhigh temperature and the arc light occur, the motor is driven to work in time to close an arc extinguishing structure of the arc extinguishing chamber and cut off a circuit, the problems that the arc light is generated due to single-phase or interphase short circuit and burnt out and ignited due to aging after the outgoing cable of the circuit breaker is used for a long time are effectively solved, and the use safety of the switch cabinet is improved;
the current monitoring, the temperature monitoring and the arc light monitoring are integrated, the monitoring is more comprehensive, and the guarantee effect is better;
due to the arrangement of the WIFI communication module, the circuit breaker has a communication function, when a brake closing instruction is made, operation information can be sent to a maintenance worker in time, the maintenance worker is prompted to go to the inspection, and the phenomenon of breakdown of a circuit system caused by slow inspection is avoided;
the circuit breaker has an alarm function by arranging the sound-light alarm module to be matched with the alarm lamp and the buzzer, sound-light alarm information can be sent out in time to prompt surrounding personnel to take corresponding measures, eleven arc light alarm lamps correspond to eleven arc light sensors, the position of a problem can be accurately found when arc light causes closing, and convenience in maintenance and transportation is improved;
through setting up the carrier communication unit, can make this level circuit breaker and higher level circuit breaker can mutual network deployment, when this level circuit breaker refuses to move, can send tripping operation instruction to higher level circuit breaker, can not appear because of this level circuit breaker trouble lead to the cubical switchboard whole phenomenon of burning out, on fire, the practicality is better.
Drawings
FIG. 1 is a system block diagram of the present invention;
fig. 2 is a block diagram of the present stage circuit breaker system of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1-2, the present embodiment provides a technical solution: an intelligent circuit breaker with arc light protection comprises an auxiliary unit and a circuit breaker, wherein the auxiliary unit comprises an overcurrent sensor, a temperature sensor, an arc light sensor 1-N and a current transformer;
the overcurrent sensor is used for monitoring whether the circuit has an overcurrent phenomenon;
the temperature sensor is used for monitoring the internal temperature of the switch cabinet;
the arc sensors 1-N are used for monitoring arc faults;
the current transformer is used for converting a large primary side current into a small secondary side current to measure current.
This level of circuit breaker includes singlechip, data acquisition module, measurement chip, communication module, data storage module, motor drive, direct current motor, explosion chamber, arc extinguishing structure, audible and visual alarm module, alarm lamp and bee calling organ, and communication module includes infrared receiving and dispatching unit and WIFI communication unit.
The specific processing steps of the circuit breaker of the current stage are as follows:
the method comprises the following steps: the data acquisition module acquires electric signals from the over-current sensor, the temperature sensor and the arc light sensor 1-10, the electric signals are identified and processed by the singlechip, and the arc light sensor adopts the mode of changing based on the current rate when the arc light sensor transmits the electric signalsIg=Ig1 +Ig2
Step two: the single chip microcomputer is identified and judged through a software program, when the phenomena of overcurrent, overhigh temperature, arc light and the like occur, the single chip microcomputer controls the motor to drive the direct current motor to work, the direct current motor drives the arc extinguishing structure in the arc extinguishing chamber to work, the circuit breaker is switched off, and the circuit is cut off;
step three: the data storage module stores the work record of the single-chip microcomputer, and sends the work record to the maintenance personnel terminal through the WIFI communication unit to indicate fault information of the maintenance personnel;
step four: the maintenance personnel can remotely control the operation through the infrared transceiving unit by infrared, and the direct current motor is driven to work again through the single chip microcomputer to carry out switching on;
step five: when the singlechip sends a brake closing instruction, the sound-light alarm module drives the alarm lamp and the buzzer to work and sends a sound-light alarm prompt;
step six: the metering chip collects the input current of the current transformer for metering and stores the input current through the data storage module.
The communication module further comprises a carrier communication unit and an antenna unit, the carrier communication unit is used for networking the current-stage circuit breaker and the superior-stage circuit breaker, and the antenna unit is used for enhancing the signal strength.
The data storage module comprises a partition unit, an editing unit and a clock unit, wherein the partition unit partitions the stored data into an area a, an area b and an area c.
The number of the warning lamps is three, and the three warning lamps are respectively a temperature warning lamp, an arc light warning lamp and an overcurrent warning lamp.
In the auxiliary unit, the number of arc sensors is ten fixed arc sensors and one movable arc sensor, the number of arc warning lamps is eleven, and each arc warning lamp corresponds to one arc sensor.
It should be noted that when the arc sensor is used for transmitting an electric signal, the data acquisition module acquires the electric signal from the over-current sensor, the temperature sensor and the arc sensor 1-10, the electric signal is identified and processed by the singlechip, and when the arc sensor is used for transmitting an electric signal, the electric signal is adopted based on the change of the current rateIg=Ig1+Ig2
(1) the current change rate dig/dt of the short-circuit current is far larger than that of other currents;
(2) when in use
>90 degrees, when the current is in the short circuit of the descending section of the positive half cycle, the normal current instantaneous value is reduced, and the short circuit current is suddenly and greatly increased, thereby being beneficial to the detection and the distinction of the current change rate.
And continuously detecting the current change rate for multiple times within 0.1ms, eliminating the sudden change of the interference current, and determining that the short-time short-circuit fault occurs when the detected current change rate for multiple times exceeds a normal value.
If the arc light signal exceeds the set threshold value and at least one phase current signal also exceeds the set current threshold value, the protection system outputs trip control to disconnect the current of the corresponding line, thereby achieving the purpose of removing the fault;
if only one of the arc light and the overcurrent signal exceeds the threshold value, only alarm processing is carried out, and trip control is not output.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. The intelligent circuit breaker with the arc light protection function is characterized by comprising an auxiliary unit and a circuit breaker, wherein the auxiliary unit comprises an overcurrent sensor, a temperature sensor, arc light sensors 1-N and a current transformer;
the over-current sensor is used for monitoring whether an over-current phenomenon exists in the circuit;
the temperature sensor is used for monitoring the internal temperature of the switch cabinet;
the arc sensors 1-N are used for monitoring arc faults;
the current transformer is used for converting a large current on the primary side into a small current on the secondary side to measure current;
the circuit breaker comprises a single chip microcomputer, a data acquisition module, a metering chip, a communication module, a data storage module, a motor drive, a direct current motor, an arc extinguishing chamber, an arc extinguishing structure, an acousto-optic alarm module, an alarm lamp and a buzzer, wherein the communication module comprises an infrared receiving and transmitting unit and a WIFI communication unit;
the specific processing steps of the current-stage circuit breaker are as follows:
the method comprises the following steps: the data acquisition module acquires electric signals from the over-current sensor, the temperature sensor and the arc light sensor 1-10, the electric signals are identified and processed by the singlechip, and the arc light sensor adopts the mode of changing based on the current rate when the arc light sensor transmits the electric signalsIg=Ig1+ Ig2
Step two: the single chip microcomputer is identified and judged through a software program, when the phenomena of overcurrent, overhigh temperature, arc light and the like occur, the single chip microcomputer controls the motor to drive the direct current motor to work, the direct current motor drives the arc extinguishing structure in the arc extinguishing chamber to work, the circuit breaker is switched off, and the circuit is cut off;
step three: the data storage module stores the work record of the single-chip microcomputer, and sends the work record to the maintenance personnel terminal through the WIFI communication unit to indicate fault information of the maintenance personnel;
step four: the maintenance personnel can remotely control the operation through the infrared transceiving unit by infrared, and the direct current motor is driven to work again through the single chip microcomputer to carry out switching on;
step five: when the singlechip sends a closing instruction, the sound-light alarm module drives the alarm lamp and the buzzer to work and sends a sound-light alarm prompt;
step six: the metering chip collects the input current of the current transformer for metering and stores the input current through the data storage module.
2. The intelligent circuit breaker with arc protection of claim 1, wherein: the communication module further comprises a carrier communication unit and an antenna unit, wherein the carrier communication unit is used for networking the current-stage circuit breaker and the superior circuit breaker, and the antenna unit is used for enhancing the signal intensity.
3. The intelligent circuit breaker with arc protection of claim 1, wherein: the data storage module comprises a partition unit, an editing unit and a clock unit, wherein the partition unit partitions the stored data into an area a, an area b and an area c.
4. The intelligent circuit breaker with arc protection of claim 1, wherein: the number of the alarm lamps is three, and the three alarm lamps are respectively a temperature alarm lamp, an arc alarm lamp and an overcurrent alarm lamp.
5. The intelligent circuit breaker with arc protection of claim 4, wherein: in the auxiliary unit, the number of arc sensors is ten fixed arc sensors and one movable arc sensor, the number of arc warning lamps is eleven, and each arc warning lamp corresponds to one arc sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163824.0A CN114884026A (en) | 2021-02-05 | 2021-02-05 | Intelligent circuit breaker with arc light protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163824.0A CN114884026A (en) | 2021-02-05 | 2021-02-05 | Intelligent circuit breaker with arc light protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114884026A true CN114884026A (en) | 2022-08-09 |
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ID=82666951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110163824.0A Pending CN114884026A (en) | 2021-02-05 | 2021-02-05 | Intelligent circuit breaker with arc light protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114884026A (en) |
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2021
- 2021-02-05 CN CN202110163824.0A patent/CN114884026A/en active Pending
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