CN114709113A - Intelligent low-voltage circuit breaker - Google Patents
Intelligent low-voltage circuit breaker Download PDFInfo
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- CN114709113A CN114709113A CN202210311779.3A CN202210311779A CN114709113A CN 114709113 A CN114709113 A CN 114709113A CN 202210311779 A CN202210311779 A CN 202210311779A CN 114709113 A CN114709113 A CN 114709113A
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- 238000012937 correction Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 6
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- 230000005540 biological transmission Effects 0.000 abstract description 12
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- 238000011897 real-time detection Methods 0.000 description 5
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
Abstract
The invention discloses an intelligent low-voltage circuit breaker, comprising: the device comprises an encryption unit, a power line carrier unit and a main controller, wherein the encryption unit is used for encrypting data information; the power carrier unit is used for transmitting data information through a power line; the main controller is respectively connected with the encryption unit and the power carrier unit and used for encrypting the data information of the circuit breaker through the encryption unit and sending the encrypted data information to the external equipment through the power carrier unit. Therefore, the data information power carrier is encrypted and transmitted to the external equipment through the power carrier unit and the encryption unit, the defect that data cannot be transmitted remotely is effectively overcome, the data information acquisition communication range is expanded, meanwhile, communication data can be prevented from being illegally acquired, and the safety of data transmission is improved.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an intelligent low-voltage circuit breaker.
Background
With the rapid development of the power system, the power system puts higher requirements on the communication and the intellectualization of the power distribution equipment, and the circuit breaker serving as the key node equipment of the power system can be used for the matching of load current in the power system, realizes the reliable and rapid cutting of short-circuit current and is the optimal detection point of the power distribution system.
However, the traditional circuit breaker is influenced by a plurality of environmental factors such as field bus arrangement, communication distance and the like, and can only be installed in the same power distribution cabinet or equipment around the power distribution cabinet, so that the communication range of data information acquisition is severely limited, and the communication content transmitted by the traditional circuit breaker is easily illegally acquired by a third party, so that potential safety hazards of data exist.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art. Therefore, the invention aims to provide the intelligent low-voltage circuit breaker, the data information power carrier is encrypted and transmitted to the external equipment through the power carrier unit and the encryption unit, the defect that data cannot be transmitted remotely is effectively overcome, the data information acquisition communication range is expanded, meanwhile, communication data can be prevented from being illegally acquired, and the safety of data transmission is improved.
In order to achieve the above object, an embodiment of the present invention provides an intelligent low-voltage circuit breaker, including: an encryption unit configured to encrypt data information; the power carrier unit is used for transmitting data information through a power line; and the main controller is respectively connected with the encryption unit and the power carrier unit and is used for encrypting the data information of the circuit breaker through the encryption unit and sending the encrypted data information to external equipment through the power carrier unit.
According to the intelligent low-voltage circuit breaker provided by the embodiment of the invention, the main controller controls the encryption unit to encrypt the data information of the circuit breaker, and controls the power line carrier unit to send the encrypted data information to the external equipment. Therefore, the data information power carrier is encrypted and transmitted to the external equipment through the power carrier unit and the encryption unit, the defect that data cannot be transmitted remotely is effectively overcome, the data information acquisition communication range is expanded, meanwhile, communication data can be prevented from being illegally acquired, and the safety of data transmission is improved.
According to one embodiment of the present invention, an encryption unit includes: the data input and output end of the encryption chip is connected with the main controller; the switch tube, the control end and the main control unit of switch tube link to each other, and the first end of switch tube links to each other with presetting the power, and the second end of switch tube links to each other with the power end of encrypting the chip, and main control unit still is used for switching on or breaking off of control switch tube in order to control to encrypt the chip work or stop work.
According to one embodiment of the invention, the encryption unit further comprises: and the filter capacitor is connected between the second end of the switch tube and the ground.
According to one embodiment of the invention, the circuit breaker further comprises: the switch is connected to a main circuit of the circuit breaker through an internal wiring terminal of the circuit breaker; the built-in temperature detection piece is arranged corresponding to the internal wiring terminal and used for detecting the temperature of the internal wiring terminal and outputting a corresponding first voltage signal; the built-in temperature collector is connected with the built-in temperature detection part and used for collecting a first voltage signal; the main controller is further connected with the built-in temperature collector and used for obtaining the temperature of the internal wiring terminal according to the first voltage signal and conducting over-temperature protection.
According to one embodiment of the invention, the internal connection terminals comprise a plurality of internal incoming connection terminals and a plurality of internal outgoing connection terminals, the internal temperature detection element comprises a plurality of first thermocouples, and each internal incoming connection terminal and/or each internal outgoing connection terminal is provided with one first thermocouple correspondingly.
According to one embodiment of the invention, the circuit breaker further comprises: and the first optical coupler isolator is arranged between the built-in temperature collector and the main controller and is used for carrying out optical coupler isolation on the first voltage signal.
According to an embodiment of the invention, the circuit breaker further comprises: the internal communication module is communicated with the external temperature collector and used for receiving second voltage signals collected by the external temperature collector, wherein the external temperature collector is connected with the external temperature detection piece, and the external temperature detection piece is arranged corresponding to an external wiring terminal of the circuit breaker and used for detecting the temperature of the external wiring terminal and outputting corresponding second voltage signals; the main controller is also connected with the internal communication module and used for obtaining the temperature of the external wiring terminal according to the second voltage signal and performing over-temperature protection.
According to one embodiment of the invention, the external connection terminals comprise a plurality of external incoming connection terminals and a plurality of external outgoing connection terminals, the external temperature detection piece comprises a plurality of second thermocouples, and each external incoming connection terminal and/or each external outgoing connection terminal is/are respectively and correspondingly provided with one second thermocouple.
According to one embodiment of the invention, the circuit breaker further comprises: and the second optical coupler isolator is arranged between the internal communication module and the main controller and is used for carrying out optical coupler isolation on the second voltage signal.
According to one embodiment of the invention, the circuit breaker further comprises: the voltage detection piece is arranged on the main loop and used for acquiring the voltage of the main loop; the current detection piece is arranged on the main loop and used for acquiring the current of the main loop; and the processor is respectively connected with the voltage detection part, the current detection part and the main controller and used for acquiring active power, reactive power and power factor according to the voltage of the main loop and the current of the main loop and sending the active power, the reactive power and the power factor to the main controller.
According to an embodiment of the invention, the internal communication module is further communicated with the external communication module, the external communication module is connected with the capacitor switching switch, the capacitor switching switch is arranged between the power factor correction capacitor and the main circuit, and the main controller is further used for generating a capacitor switching signal according to the reactive power and the power factor, and sending the capacitor switching signal to the capacitor switching switch through the internal communication module and the external communication module so as to switch the power factor correction capacitor to the main circuit or cut the power factor correction capacitor from the main circuit through the capacitor switching switch.
According to one embodiment of the invention, the circuit breaker further comprises: the actuator is connected with the main controller, and the main controller is also used for controlling the actuator to drive the switch to be switched on or switched off so as to control the main loop to be switched on or switched off
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of an intelligent low-voltage circuit breaker according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of an intelligent low-voltage circuit breaker according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of an intelligent low-voltage circuit breaker according to a third embodiment of the invention;
fig. 4 is a schematic structural diagram of an intelligent low-voltage circuit breaker according to a fourth embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An intelligent low-voltage circuit breaker according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of an intelligent low-voltage circuit breaker according to a first embodiment of the present invention, and referring to fig. 1, the intelligent low-voltage circuit breaker 10 includes: an encryption unit 100, a power carrier unit 110, and a main controller 120.
Wherein, the encryption unit 100 is used for encrypting the data information; the power carrier unit 110 is used for transmitting data information through a power line; the main controller 120 is respectively connected to the encryption unit 100 and the power line carrier unit 110, and is configured to encrypt data information of the circuit breaker by the encryption unit 100, and transmit the encrypted data information to an external device through the power line carrier unit 110.
Particularly, the existing circuit breaker and external equipment are usually communicated in an RS-485 wired connection mode and are influenced by a plurality of environmental factors such as field bus arrangement, communication distance and the like, the low-voltage circuit breaker can only be usually installed in the same power distribution cabinet or equipment with a very short distance, the data information acquisition communication range is severely limited, the communication adopts a plaintext mode to transmit acquired data, and communication contents are easily illegally acquired by a third party, so that data potential safety hazards exist.
Based on this, in this application, be provided with encryption unit 100, power line carrier unit 110 and main control unit 120 inside intelligent low-voltage circuit breaker 10, in intelligent low-voltage circuit breaker 10 course of operation, main control unit 120 control encryption unit 100 encrypts the data information who obtains, and send the data information after encrypting to external equipment through power line carrier unit 110, thereby realized the power line carrier encryption transmission to the data, need not to patrol and examine personnel and go on the spot inspection investigation to the circuit breaker on-the-spot, can obtain the running state or the fault situation of intelligent low-voltage circuit breaker at a distance in the place far away through external equipment, effectively solved the shortcoming that wired connection communication can't long-distance transmission, data information acquisition communication range has been expanded, avoided communication data to be obtained illegally simultaneously, the security of data transmission has been improved.
In some embodiments, as shown in fig. 2, the encryption unit 100 includes: the encryption chip IC and the switch tube Q1, the data input and output ends of the encryption chip IC are connected with the main controller 120; the control end of the switch tube Q1 is connected with the main controller 120, the first end of the switch tube Q1 is connected with a preset power VCC, the second end of the switch tube Q1 is connected with the power end of the encryption chip IC, and the main controller 120 is also used for controlling the on-off of the switch tube Q1 to control the encryption chip IC to work or stop working
Further, with continued reference to fig. 2, the encryption unit 100 further includes: and the filter capacitor C1 and the filter capacitor C1 are connected between the second end of the switching tube Q1 and the ground.
Specifically, when the intelligent low-voltage circuit breaker 10 works, the main controller 120 controls the switching tube Q1 to be turned on to power on the encryption chip IC, the encryption chip IC receives data information from the main controller 120 through the data input end after being powered on, the main controller 120 controls the encryption chip IC to encrypt the data information obtained by the encryption chip IC while obtaining data, the encrypted data information is fed back to the main controller 120 again through the data output end of the encryption chip IC, and the main controller 120 transmits the encrypted data to an external device through the power carrier unit 110, so that power carrier encryption transmission of the data is realized. It should be noted that the selected cryptographic chip IC has multiple security protection mechanisms such as SM1, SM2, SM3 cryptographic algorithm, true random number generator, and the like, and here, no specific limitation is made, and confidentiality and integrity of data transmission and storage can be effectively ensured.
In some embodiments, as shown in fig. 3, the circuit breaker further comprises: the temperature control circuit comprises a switch 130, a built-in temperature detection part 140 and a built-in temperature collector 150, wherein the switch 130 is connected to a main loop of the circuit breaker through an internal wiring terminal of the circuit breaker; the built-in temperature detection piece 140 is arranged corresponding to the internal wiring terminal and is used for detecting the temperature of the internal wiring terminal and outputting a corresponding first voltage signal; the built-in temperature collector 150 is connected with the built-in temperature detection part 140 and is used for collecting a first voltage signal; the main controller 120 is further connected to the built-in temperature collector 150, and is configured to obtain the temperature of the internal connection terminal according to the first voltage signal and perform over-temperature protection.
Further, as shown in fig. 3, the internal connection terminals include a plurality of internal incoming connection terminals and a plurality of internal outgoing connection terminals, the internal temperature detection member 140 includes a plurality of first thermocouples V1, and each internal incoming connection terminal and/or each internal outgoing connection terminal is respectively and correspondingly provided with one first thermocouple V1.
Further, with continued reference to fig. 3, the circuit breaker further comprises: the first optical coupler isolator 160, the first optical coupler isolator 160 is disposed between the built-in temperature collector 150 and the main controller 120, and is used for performing optical coupler isolation on the first voltage signal.
It should be noted that, in traditional circuit breaker distribution lines overall arrangement, various temperature sensor set up in traditional circuit breaker outsidely, and the temperature sensor who provides by different producers adopts different communication protocol, need install respectively and debug to cause the construction cycle longer, wiring confusion, fault rate higher scheduling problem.
Based on this, in the present application, a switch 130, a built-in temperature detecting element 140 and a built-in temperature collector 150 are further disposed inside the intelligent low-voltage circuit breaker 10, specifically, the internal connection terminals include a plurality of internal incoming line connection terminals and a plurality of internal outgoing line connection terminals, as shown in fig. 3, the internal connection terminals of the circuit breaker include four internal incoming line connection terminals and four internal outgoing line connection terminals, and each internal incoming line connection terminal and/or each internal outgoing line connection terminal is respectively and correspondingly disposed with a first thermocouple V1, and the case that each internal incoming line connection terminal and each internal outgoing line connection terminal are respectively and correspondingly disposed with a first thermocouple V1 is exemplified, that is, eight first thermocouples V1 are disposed correspondingly to four internal incoming line connection terminals and four internal outgoing line connection terminals, when the circuit breaker operates, the switch 130 is closed, the temperature of the main circuit internal connection terminal is detected by the first thermocouple V1 in the built-in temperature detecting member 140, and generates a corresponding first voltage signal to be transmitted to the built-in temperature collector 150, the built-in temperature collector 150 feeds back the obtained first voltage signal to the main controller 120, wherein, a first optical coupler isolator 160 is arranged between the built-in temperature collector 150 and the main controller 120, to optically couple and isolate the first voltage signal, the main controller 120 determines the temperature of the internal connection terminal according to the obtained first voltage signal, if the temperature of the internal connection terminal is normal, the circuit breaker is working normally, if the temperature of the internal connection terminal is abnormal, the circuit breaker is controlled to perform corresponding over-temperature protection, and the obtained temperature information is encrypted by the encryption chip IC and then can be transmitted to external equipment through the power carrier unit 110, so that the remote detection of the temperature information of the wiring terminal in the circuit breaker is facilitated.
It should be noted that each internal incoming line connection terminal and/or each internal outgoing line connection terminal is respectively and correspondingly provided with one first thermocouple V1, and in the above embodiment, only the case where each internal incoming line connection terminal and each internal outgoing line connection terminal are respectively and correspondingly provided with one first thermocouple V1 is described, in this application, the case where only each internal incoming line connection terminal is respectively and correspondingly provided with one first thermocouple V1, and each internal outgoing line connection terminal is not correspondingly provided with one first thermocouple V1 is also included; or each internal outgoing line connecting terminal is correspondingly provided with a first thermocouple V1, each internal incoming line connecting terminal is not correspondingly provided with a first thermocouple V1, the working process of the working process is similar to the working process of correspondingly arranging a first thermocouple V1 for each internal incoming line connecting terminal and each internal outgoing line connecting terminal, and the description is omitted here.
From this, lead to the switch, built-in temperature detects the piece, built-in temperature collector and first opto-coupler isolator are integrated inside intelligent low voltage circuit breaker in order to realize the real-time detection to intelligent low voltage circuit breaker internal binding post temperature, need not to set up temperature sensor in the distribution lines and can realize the temperature monitoring to low voltage circuit breaker, thereby can reduce equipment type, reduce construction cycle and fault point, and then reach the mesh of practicing thrift the distribution lines construction cost by a wide margin, and simultaneously, can pass through power line carrier encryption transmission to external equipment with temperature detection information, the remote monitoring to circuit breaker internal binding post temperature information has been realized, need not to patrol and examine personnel and examine the operating condition or the fault condition that can obtain intelligent low voltage circuit breaker to the site.
In some embodiments, as shown in fig. 3, the circuit breaker further comprises: the internal communication module 170 is in communication with the external temperature collector 180 and is used for receiving a second voltage signal collected by the external temperature collector 180, wherein the external temperature collector 180 is connected with the external temperature detection piece 190, and the external temperature detection piece 190 is arranged corresponding to an external wiring terminal of the circuit breaker and is used for detecting the temperature of the external wiring terminal and outputting a corresponding second voltage signal; the main controller 120 is further connected to the internal communication module 170, and is configured to obtain the temperature of the external connection terminal according to the second voltage signal and perform over-temperature protection.
Further, as shown in fig. 3, the external connection terminals include a plurality of external incoming line connection terminals and a plurality of external outgoing line connection terminals, the external temperature detection member 190 includes a plurality of second thermocouples V2, and each external incoming line connection terminal and/or each external outgoing line connection terminal is respectively and correspondingly provided with one second thermocouple V2.
Further, with continued reference to fig. 3, the circuit breaker further comprises: a second optical coupler isolator 200, the second optical coupler isolator 200 being disposed between the internal communication module 170 and the main controller 120 for optical coupler isolation of the second voltage signal.
Specifically, in order to detect the temperature of the important external terminals of the low voltage circuit breaker, the circuit breaker further includes an internal communication module 170, which communicates with an external temperature collector 180 through the internal communication module 170 to obtain the temperature of the external terminals detected by the external temperature detector 190, in this embodiment, the external terminals include a plurality of external incoming line terminals and a plurality of external outgoing line terminals, as shown in fig. 3, the external terminals of the circuit breaker include four external incoming line terminals and four external outgoing line terminals, and each external incoming line terminal and/or each external outgoing line terminal is respectively and correspondingly provided with a second thermocouple V2, which is exemplified by respectively and correspondingly providing a second thermocouple V2 for each external incoming line terminal and each external outgoing line terminal, that is, eight second thermocouples V2 are correspondingly provided for the four external incoming line terminals and the four external outgoing line terminals, when the circuit breaker works, the temperature of the external connection terminals around the main circuit is detected by a second thermocouple V2 in the external temperature detection piece 190, a corresponding second voltage signal is generated and transmitted to the external temperature collector 180, the external temperature collector 180 feeds back the obtained second voltage signal to the main controller 120, wherein a second optical coupler isolator 200 is arranged between the external temperature collector 180 and the main controller 120 to optically couple and isolate the second voltage signal, the main controller 120 determines the temperature of the external connection terminals around the circuit breaker according to the obtained second voltage signal, if the temperature of the external connection terminals around the circuit breaker is normal, the circuit breaker normally works, if the temperature of the external connection terminals around the circuit breaker is abnormal, the circuit breaker is controlled to perform corresponding over-temperature protection, and meanwhile, the obtained temperature information is encrypted by the encryption chip IC and then can be transmitted to external equipment through the power carrier unit 110, the remote detection of the temperature information of the external terminals around the circuit breaker is facilitated.
It should be noted that each external incoming line connection terminal and/or each external outgoing line connection terminal is respectively and correspondingly provided with one second thermocouple V2, and in the above embodiment, only the case where each external incoming line connection terminal and each external outgoing line connection terminal are respectively and correspondingly provided with one second thermocouple V2 is described, in this application, the case where only each external incoming line connection terminal is respectively and correspondingly provided with one second thermocouple V2, and each external outgoing line connection terminal is not correspondingly provided with one second thermocouple V2 is also included; or each external outgoing line connecting terminal is correspondingly provided with one second thermocouple V2, and each external incoming line connecting terminal is not correspondingly provided with one second thermocouple V2, and the working process is similar to the working process that each external incoming line connecting terminal and each external outgoing line connecting terminal are correspondingly provided with one second thermocouple V2, and the description is omitted here.
Therefore, the temperature information of the external wiring terminals around the circuit breaker is obtained through the external temperature collector, the temperature data are transmitted to the main controller through the internal communication module, the real-time detection of the temperature of the external wiring terminals around the intelligent low-voltage circuit breaker is realized, the temperature detection information can be transmitted to external equipment through current carrier encryption, the remote monitoring of the temperature information of the external wiring terminals around the circuit breaker is realized, and the working state or the fault condition of external key external wiring terminal nodes around the intelligent low-voltage circuit breaker can be obtained without inspection personnel to a site.
In some embodiments, as shown in fig. 4, the circuit breaker further comprises: the voltage detection device comprises a voltage detection part 210, a current detection part 220 and a processor 230, wherein the voltage detection part 210 is arranged on a main loop and used for acquiring the voltage of the main loop; the current detection element 220 is disposed on the main loop for obtaining the current of the main loop; the processor 230 is connected to the voltage detection unit 210, the current detection unit 220, and the main controller 120, respectively, and is configured to obtain active power, reactive power, and a power factor according to the voltage of the main loop and the current of the main loop, and send the active power, reactive power, and power factor to the main controller 120.
That is to say, the monitoring of the main circuit is realized through the voltage detection part 210, the current detection part 220 and the processor 230 inside the intelligent low-voltage circuit breaker 10, and specifically, when the circuit breaker works, the processor 230 works in cooperation with the voltage detection part 210 and the current detection part 220, so that the voltage, the current, the active power, the reactive power, the power factor and other electrical signals of the main circuit can be accurately measured, and the obtained electrical signal data information is sent to the main controller 120, the main controller 120 controls the encryption unit 100 to encrypt the obtained electrical signal data information, and wirelessly transmits the encrypted electrical signal data information to the external device through the electrical carrier unit 110, thereby realizing the electrical carrier encryption transmission of the electrical signal data information. Optionally, the voltage detection element and the current detection element may be a high-precision voltage transformer and a high-precision current transformer, respectively, and are not limited specifically.
From this, through with voltage detection spare, current detection spare and treater integration inside intelligent low voltage circuit breaker, realized intelligent low voltage circuit breaker to the real-time detection of inside signal of telecommunication to can pass through power line carrier encryption transmission to external equipment with signal of telecommunication data information, realized the remote monitoring to the inside signal of telecommunication of circuit breaker, need not to patrol and examine personnel and go to the on-the-spot and examine the operating condition or the fault condition that can obtain intelligent low voltage circuit breaker.
In some embodiments, as shown in fig. 4, the internal communication module 170 is further in communication with the external communication module 240, the external communication module 240 is connected to a capacitance switching switch 250, the capacitance switching switch 250 is disposed between the power factor correction capacitor C2 and the main circuit, and the main controller 120 is further configured to generate a capacitance switching signal according to the reactive power and the power factor, and send the capacitance switching signal to the capacitance switching switch 250 through the internal communication module 170 and the external communication module 240, so as to switch the power factor correction capacitor C2 to the main circuit or cut off the power factor correction capacitor C2 from the main circuit through the capacitance switching switch 250.
Specifically, referring to fig. 4, the intelligent low-voltage circuit breaker 10 may obtain reactive power and a power factor of a main circuit through a built-in voltage detector 210, a built-in current detector 220, and a built-in processor 230, the main controller 120 may generate a capacitance switching signal according to the obtained reactive power and the power factor, and transmit the capacitance switching signal to the capacitance switching switch 250 through the external communication module 240 through the internal communication module 170, and the capacitance switching switch 250 switches the power factor correction capacitor C2 to the main circuit or cuts off the power factor correction capacitor C2 from the main circuit according to the capacitance switching signal, thereby realizing that the intelligent low-voltage circuit breaker directly controls the capacitance switching switch without controlling the capacitance switching switch through an additional conventional capacitance controller.
In some embodiments, as shown in fig. 4, the circuit breaker further comprises: the actuator 260, the actuator 260 is connected to the main controller 120, and the main controller 120 is further configured to drive the switch 130 to be turned on or off by controlling the actuator 260, so as to control the main circuit to be turned on or off. That is, when the circuit breaker is operated, the main controller 120 drives the switch to be turned on by controlling the actuator 260 to control the main circuit to be turned on, and when the circuit breaker is not operated, the main controller 120 drives the switch to be turned off by controlling the actuator 260 to control the main circuit to be turned off, thereby implementing flexible control of the circuit breaker.
In summary, according to the intelligent low-voltage circuit breaker of the embodiment of the invention, the corresponding temperature detection device is arranged in the intelligent low-voltage circuit breaker to realize the real-time detection of the temperature of the internal and external wiring terminals by the intelligent low-voltage circuit breaker, the real-time detection of the internal electric signal by the intelligent low-voltage circuit breaker is realized by arranging the electric signal detection device in the intelligent low-voltage circuit breaker, and the capacitance switching switch is directly controlled by the intelligent low-voltage circuit breaker, thereby avoiding the control of the capacitance switching switch by adding a traditional capacitance controller, meanwhile, the acquired data information of voltage, current, temperature and the like is transmitted to the external equipment by the power carrier encryption by the power carrier unit and the encryption unit, effectively solving the defect that the data cannot be transmitted remotely, expanding the data information acquisition communication range, and simultaneously avoiding the illegal acquisition of communication data, the safety of data transmission is improved.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following technologies, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
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.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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 (12)
1. An intelligent low-voltage circuit breaker, characterized in that it comprises:
an encryption unit configured to encrypt data information;
the power carrier unit is used for transmitting data information through a power line;
and the main controller is respectively connected with the encryption unit and the power carrier unit and used for encrypting the data information of the circuit breaker through the encryption unit and transmitting the encrypted data information to external equipment through the power carrier unit.
2. Intelligent low-voltage circuit breaker according to claim 1, characterized in that said encryption unit comprises:
the data input end and the data output end of the encryption chip are connected with the main controller;
the control end of the switch tube is connected with the main controller, the first end of the switch tube is connected with a preset power supply, the second end of the switch tube is connected with the power supply end of the encryption chip, and the main controller is further used for controlling the switch tube to be switched on or switched off so as to control the encryption chip to work or stop working.
3. Intelligent low-voltage circuit breaker according to claim 2, characterized in that said encryption unit further comprises:
and the filter capacitor is connected between the second end of the switch tube and the ground.
4. Intelligent low-voltage circuit breaker according to claim 1, characterized in that it further comprises:
the switch is connected in a main loop of the circuit breaker through an internal wiring terminal of the circuit breaker;
the built-in temperature detection piece is arranged corresponding to the internal wiring terminal and used for detecting the temperature of the internal wiring terminal and outputting a corresponding first voltage signal;
the built-in temperature collector is connected with the first temperature detection part and is used for collecting the first voltage signal;
the main controller is further connected with the built-in temperature collector and used for obtaining the temperature of the internal wiring terminal according to the first voltage signal and performing over-temperature protection.
5. The intelligent low-voltage circuit breaker according to claim 4, wherein said internal terminals comprise a plurality of internal incoming terminals and a plurality of internal outgoing terminals, said internal temperature detector comprises a plurality of first thermocouples, and each of said internal incoming terminals and/or each of said internal outgoing terminals is provided with one of said first thermocouples.
6. Intelligent low-voltage circuit breaker according to claim 4 or 5, characterized in that it further comprises:
the first optical coupler isolator is arranged between the built-in temperature collector and the main controller and used for optically coupling isolation of the first voltage signal.
7. Intelligent low-voltage circuit breaker according to claim 1, characterized in that it further comprises:
the internal communication module is communicated with the external temperature collector and used for receiving a second voltage signal collected by the external temperature collector, wherein the external temperature collector is connected with an external temperature detection piece, and the external temperature detection piece is arranged corresponding to an external wiring terminal of the circuit breaker and used for detecting the temperature of the external wiring terminal and outputting the corresponding second voltage signal;
and the main controller is also connected with the internal communication module and used for acquiring the temperature of the external wiring terminal according to the second voltage signal and performing over-temperature protection.
8. The intelligent low-voltage circuit breaker according to claim 7, wherein the external connection terminals comprise a plurality of external incoming connection terminals and a plurality of external outgoing connection terminals, the external temperature detection element comprises a plurality of second thermocouples, and each of the external incoming connection terminals and/or each of the external outgoing connection terminals is provided with one of the second thermocouples.
9. Intelligent low-voltage circuit breaker according to claim 7 or 8, characterized in that it further comprises:
and the second optical coupler isolator is arranged between the internal communication module and the main controller and used for optically coupling isolation of the second voltage signal.
10. Intelligent low-voltage circuit breaker according to claim 7, characterized in that it further comprises:
the voltage detection piece is arranged on the main loop and used for acquiring the voltage of the main loop;
the current detection piece is arranged on the main loop and used for acquiring the current of the main loop;
and the processor is respectively connected with the voltage detection piece, the current detection piece and the main controller and used for acquiring active power, reactive power and power factor according to the voltage of the main loop and the current of the main loop and sending the active power, reactive power and power factor to the main controller.
11. The intelligent low-voltage circuit breaker according to claim 10, wherein the internal communication module is further in communication with an external communication module, the external communication module is connected with a capacitance switching switch, the capacitance switching switch is arranged between a power factor correction capacitor and the main circuit, and the main controller is further configured to generate a capacitance switching signal according to the reactive power and the power factor, and send the capacitance switching signal to the capacitance switching switch through the internal communication module and the external communication module, so as to switch the power factor correction capacitor to the main circuit or cut off the power factor correction capacitor from the main circuit through the capacitance switching switch.
12. Intelligent low-voltage circuit breaker according to claim 4, characterized in that it further comprises:
and the actuator is connected with the main controller, and the main controller is also used for controlling the actuator to drive the switch to be switched on or switched off so as to control the main loop to be switched on or switched off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210311779.3A CN114709113A (en) | 2022-03-28 | 2022-03-28 | Intelligent low-voltage circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210311779.3A CN114709113A (en) | 2022-03-28 | 2022-03-28 | Intelligent low-voltage circuit breaker |
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| CN114709113A true CN114709113A (en) | 2022-07-05 |
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| CN202210311779.3A Pending CN114709113A (en) | 2022-03-28 | 2022-03-28 | Intelligent low-voltage circuit breaker |
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