CN111856261A - Circuit breaker state acquisition device based on power line carrier technology - Google Patents
Circuit breaker state acquisition device based on power line carrier technology Download PDFInfo
- Publication number
- CN111856261A CN111856261A CN202010687209.5A CN202010687209A CN111856261A CN 111856261 A CN111856261 A CN 111856261A CN 202010687209 A CN202010687209 A CN 202010687209A CN 111856261 A CN111856261 A CN 111856261A
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- CN
- China
- Prior art keywords
- carrier
- circuit breaker
- chip
- acquisition device
- device based
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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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
- H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
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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
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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
- H04B3/546—Combination of signalling, telemetering, protection
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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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S40/121—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 the power network as support for the transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a breaker state acquisition device based on a power line carrier technology. The device includes the carrier chip, the carrier chip includes that the carrier wave sends terminal and carrier wave receiving terminal, the carrier wave sends terminal and carrier wave receiving terminal and is used for connecting respectively at the both ends of arbitrary looks of circuit breaker, the carrier chip sends the terminal through the carrier wave and sends carrier signal to whether can receive the operating condition that its carrier signal who sends and judge the circuit breaker through the carrier wave receiving terminal, the carrier chip is connected with power module and output unit, the operating condition of circuit breaker is sent with the carrier chip control output unit. The invention is integrated into a whole, saves an auxiliary contact beside the circuit breaker, saves the space in the cabinet, can provide more space for other devices, saves the equipment investment and the transformation cost compared with the method of installing the auxiliary contact, simplifies the wiring in the cabinet, and is easy for subsequent inspection and maintenance.
Description
Technical Field
The invention relates to the technical field of identification and indication of operating states of circuit breakers, in particular to a circuit breaker state acquisition device based on a power line carrier technology.
Background
The power line carrier is a technology for transmitting an analog or digital signal at a high speed in a carrier manner by using a power transmission line as a transmission channel of a high-frequency signal. Because the power transmission line has high mechanical strength and good reliability, the communication mode is not only economical, but also stable. At present, the state of a circuit breaker of a switch cabinet is displayed by a state indicator of a circuit breaker state acquisition device intelligently controlled based on a power line carrier technology, an auxiliary contact is added on the circuit breaker in a detection mode, and the state of the circuit breaker is judged according to the connection state of the auxiliary contact. The power carrier technology has the greatest characteristic that a network does not need to be erected again, data can be transmitted as long as a wire is available, if the circuit breaker is operated and indicated based on the power carrier technology, an auxiliary contact is not needed completely, undoubtedly, wiring and cost in a cabinet can be greatly improved, and complexity of a system is reduced. At present, power plants and power distribution stations in China almost all adopt the circuit breakers with auxiliary contacts to achieve the purpose of detection, so that a large part of space in a switch cabinet is occupied, if the auxiliary contacts are in poor contact or other mechanical faults can directly cause the state indication error of the circuit breakers, and the circuit breakers are not easy to maintain.
Disclosure of Invention
The invention aims to provide a breaker state acquisition device based on a power line carrier technology, aiming at the defects in the prior art.
In order to achieve the purpose, the invention provides a circuit breaker state acquisition device based on a power line carrier technology, which comprises a carrier chip, wherein the carrier chip comprises a carrier sending terminal and a carrier receiving terminal, the carrier sending terminal and the carrier receiving terminal are respectively connected to two ends of any phase of a circuit breaker, the carrier chip sends a carrier signal through the carrier sending terminal and judges the operation state of the circuit breaker according to whether the carrier receiving terminal can receive the sent carrier signal, the carrier chip is connected with a power supply module and an output unit, and the carrier chip controls the output unit to send out the operation state of the circuit breaker.
Further, the output unit includes a relay switching value output unit for issuing an operation state of the circuit breaker as a switching value signal.
Further, the output unit comprises an RS485 communication module.
Further, the relay switching value output unit comprises a triode Q1 with an emitter connected with the positive electrode of the power supply, the base of the triode Q1 is connected with the carrier chip, and a relay is connected between the emitter and the ground.
Furthermore, the carrier chip is connected with a reset chip.
Furthermore, the carrier chip is connected with a JTAG debugging interface.
Further, the type of the carrier chip is HT 8550.
Furthermore, the power module comprises a switching power supply and a voltage stabilizing chip connected with the switching power supply.
Has the advantages that: the invention is integrated into a whole, saves an auxiliary contact beside the circuit breaker, saves the space in the cabinet, can provide more space for other devices, saves the equipment investment and the transformation cost compared with the method of installing the auxiliary contact, simplifies the wiring in the cabinet, and is easy for subsequent inspection and maintenance.
Drawings
Fig. 1 is a schematic block diagram of a circuit breaker state acquisition device based on power line carrier technology;
FIG. 2 is a schematic diagram of the connection of a carrier chip;
fig. 3 is a circuit diagram of a relay switching value output unit;
FIG. 4 is a schematic diagram of the connection of an RS485 communication module;
fig. 5 is a circuit diagram of a power supply module.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 5, an embodiment of the present invention provides a circuit breaker state acquisition device based on a power line carrier technology, including a carrier chip U1, where the type of the carrier chip U1 is preferably HT8550, and modules such as an analog front end, a digital modulation and demodulation module, and a FLASH memory module are integrated therein. The carrier chip U1 comprises a carrier sending terminal signal OUT and a carrier receiving terminal signal IN, the carrier sending terminal signal OUT and the carrier receiving terminal signal IN are respectively connected to two ends of any phase of the circuit breaker through a coupling line 2, the carrier chip U1 sends OUT a carrier signal through the carrier sending terminal signal OUT, and the operating state of the circuit breaker is judged according to whether the carrier receiving terminal signal IN can receive the sent carrier signal. Specifically, when the carrier receiving terminal signal IN of the carrier chip U1 receives the transmitted carrier signal, it indicates that the circuit breaker is closed, and conversely, the circuit breaker is open. The carrier chip U1 is connected with the power module 1 and the output unit, and the carrier chip U1 controls the output unit to send out the operating state of the circuit breaker.
The output unit of the embodiment of the invention comprises a relay switching value output unit 1, wherein the relay switching value output unit 1 is used for sending the operation state of the circuit breaker as a switching value signal, specifically, the relay switching value output unit 1 comprises a triode Q1 with an emitter connected with the positive electrode of a power supply, the base of a triode Q1 is connected with a carrier chip U1, and a relay is connected between the emitter of a triode Q1 and the ground. When the carrier chip U1 judges that the state of the circuit breaker is open, the Ctrl IO terminal of the carrier chip U1 outputs a low level signal, the collector and the emitter of the triode Q1 are in an open state, so that the relay is powered off, and the normally open contact of the relay is in an open state. When the carrier chip U1 judges that the state of the circuit breaker is closed, a Ctrl IO terminal of the carrier chip U1 outputs a high level signal, a collector electrode and an emitter electrode of the triode Q1 are in a conducting state, so that the relay is electrified, and a normally open contact of the relay is in a closed state. The relay switching value output unit 1 can transmit the switching value state to the intelligent control device state indicator of the switch cabinet for displaying.
The output unit of the embodiment of the invention can also adopt an RS485 communication module U3 to communicate with external equipment through the RS485 communication module U3. Specifically, the usa rt serial port of the carrier chip U1 is physically connected with the RS485 communication module U3, the U1_ TX and the U1_ RX correspondingly transmit and receive, and an idle general IO port is used to control the receiving and transmitting states of the RS485TO communication module.
The carrier chip U1 of the embodiment of the invention is connected with a reset chip U2, and the model of the reset chip U2 is preferably HT 7050A. VDD and VSS of the reset chip U2 are connected to a positive electrode and a negative electrode of a power module, the working condition of the power supply is monitored by an RC circuit, the reset operation is started through a determined voltage value (threshold value), meanwhile, the influence of transient interference is eliminated, misoperation during the starting and the closing of the power supply is prevented, and data safety is guaranteed.
The carrier chip U1 of the embodiment of the invention is connected with a JTAG debugging interface 3, and downloads programs or debugs through the JTAG debugging interface 3.
The power module 1 of the embodiment of the invention comprises a switching power supply U4 and a voltage stabilizing chip U5 connected with the switching power supply U4. The input voltage of the switching power supply U4 is preferably alternating current 90-265V, the power can be directly obtained from a power supply in the cabinet, and the output voltage is direct current 5V.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the invention.
Claims (8)
1. The utility model provides a circuit breaker state collection system based on power line carrier technique, a serial communication port, including the carrier chip, the carrier chip sends terminal and carrier wave receiving terminal including the carrier wave, the carrier wave sends terminal and carrier wave receiving terminal and is used for connecting respectively at the both ends of arbitrary looks of circuit breaker, the carrier chip sends the terminal through the carrier wave and sends carrier signal to whether can receive the operating condition that its carrier signal who sends judges the circuit breaker through the carrier wave receiving terminal, the carrier chip is connected with power module and output unit, the operating condition of circuit breaker is sent to carrier chip control output unit.
2. The circuit breaker state acquisition device based on power carrier technology according to claim 1, wherein the output unit comprises a relay switching value output unit for sending out the operation state of the circuit breaker as a switching value signal.
3. The circuit breaker state acquisition device based on power carrier technology as claimed in claim 1, wherein the output unit comprises an RS485 communication module.
4. The circuit breaker state acquisition device based on power carrier technology as claimed in claim 3, wherein the relay switching value output unit comprises a transistor Q1 with an emitter connected with the positive electrode of the power supply, the base of the transistor Q1 is connected with the carrier chip, and a relay is connected between the emitter and the ground.
5. The circuit breaker state acquisition device based on power carrier technology according to claim 1, characterized in that a reset chip is connected to the carrier chip.
6. The circuit breaker state acquisition device based on power line carrier technology according to claim 1, wherein the carrier chip is connected with a JTAG debug interface.
7. The circuit breaker state acquisition device based on power line carrier technology of claim 1, characterized in that the model of the carrier chip is HT 8550.
8. The circuit breaker state acquisition device based on power carrier technology according to claim 1, wherein the power module comprises a switching power supply and a voltage stabilizing chip connected with the switching power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010687209.5A CN111856261A (en) | 2020-07-16 | 2020-07-16 | Circuit breaker state acquisition device based on power line carrier technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010687209.5A CN111856261A (en) | 2020-07-16 | 2020-07-16 | Circuit breaker state acquisition device based on power line carrier technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111856261A true CN111856261A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010687209.5A Pending CN111856261A (en) | 2020-07-16 | 2020-07-16 | Circuit breaker state acquisition device based on power line carrier technology |
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| CN (1) | CN111856261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834917A (en) * | 2020-12-16 | 2021-05-25 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Relay state detection device and relay state detection method |
-
2020
- 2020-07-16 CN CN202010687209.5A patent/CN111856261A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834917A (en) * | 2020-12-16 | 2021-05-25 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Relay state detection device and relay state detection method |
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