CN213879816U - Intelligent circuit breaker communication module - Google Patents
Intelligent circuit breaker communication module Download PDFInfo
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- CN213879816U CN213879816U CN202120136957.4U CN202120136957U CN213879816U CN 213879816 U CN213879816 U CN 213879816U CN 202120136957 U CN202120136957 U CN 202120136957U CN 213879816 U CN213879816 U CN 213879816U
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Abstract
The utility model discloses an intelligent circuit breaker communication module, which comprises a power failure detection unit, a zero-crossing detection unit, a carrier coupling unit, a power amplification unit and a carrier communication chip; the power failure detection unit, the zero-crossing detection unit and the carrier coupling unit are all connected with an alternating voltage signal, the carrier coupling unit is electrically connected with the power amplification unit, the power amplification unit is electrically connected with the carrier communication chip, and the carrier communication chip is respectively electrically connected with the power failure detection unit and the zero-crossing detection unit. The product embodies the miniaturization of the carrier module, utilizes the power transmission network to carry out communication and data transmission, improves the communication speed, does not need field operation, does not need to increase the network construction cost, greatly saves the cost of manpower and material resources, and becomes the mainstream technology of the communication in the power field at present.
Description
Technical Field
The utility model relates to an electric power field especially relates to an intelligent circuit breaker communication module.
Background
With the development of the power field, power supply enterprises have higher and higher requirements on information such as power signal quality, load conditions, power utilization safety and the like on a power grid and accuracy of the information, and the data volume to be acquired is larger and larger, so that a communication mode is needed for acquiring data.
At present, the communication modes adopted in the power field include infrared communication, RS485 communication, carrier communication, wireless communication and the like, the infrared communication needs to be carried out on site for operation, the site environment is various and inconvenient to operate, RS485 needs to increase a large amount of network construction cost, the wireless communication has high blind area or communication failure rate due to the diversity of the equipment installation environment, the communication rate is low, the power carrier technology is developed and matured under the vigorous promotion of the national network, the communication rate is relatively high, the site operation is not needed, and the network construction cost is not needed to be increased, so the power carrier technology becomes the mainstream technology of the communication in the power field at present. The existing carrier communication module is large in size and is not suitable for being applied to a circuit breaker.
SUMMERY OF THE UTILITY MODEL
In order to solve the weak point that above-mentioned technique exists, the utility model provides an intelligence circuit breaker communication module.
In order to solve the technical problem, the utility model discloses a technical scheme is: an intelligent circuit breaker communication module comprises a power failure detection unit, a zero-crossing detection unit, a carrier coupling unit, a power amplification unit and a carrier communication chip; the power failure detection unit, the zero-crossing detection unit and the carrier coupling unit are all connected with an alternating voltage signal, the carrier coupling unit is electrically connected with the power amplification unit, the power amplification unit is electrically connected with the carrier communication chip, and the carrier communication chip is respectively electrically connected with the power failure detection unit and the zero-crossing detection unit.
Further, the carrier communication chip is used for communicating network data transmission on a low-voltage power line based on a broadband power line carrier technology.
Furthermore, the power amplification unit comprises a power amplifier in a circuit, and the type of the power amplifier is THS 6222.
Furthermore, the power failure detection unit comprises a voltage division circuit, the voltage division circuit is connected with the power supply, and the voltage division circuit is used for monitoring the power supply voltage.
Furthermore, the carrier coupling unit comprises a carrier coupling circuit, and the carrier coupling circuit comprises a coupling transformer and a coupling capacitor which realize bidirectional communication with the carrier communication chip.
Furthermore, the zero-crossing detection unit detects the positive zero-crossing point of the power grid voltage signal, a circuit of the zero-crossing detection unit comprises a photoelectric coupler, and the photoelectric coupler on the zero-crossing detection unit is electrically connected with the carrier communication chip.
Furthermore, the length of the intelligent circuit breaker communication module is 30-40mm, and the width of the intelligent circuit breaker communication module is 3-4 mm.
The utility model discloses increase electric power broadband carrier communication function on original communication function's basis, embodied the miniaturization of carrier wave module, it utilizes the power transmission net to carry out communication and data transmission, improves communication speed, need not field operation, also need not increase the network construction cost, consequently practices thrift manpower and material resources cost greatly, becomes the mainstream technique of present electric power field communication.
Drawings
Fig. 1 is a schematic block diagram of the structure of the present invention.
Fig. 2 is a circuit diagram of the zero-crossing detection unit of the present invention.
Fig. 3 is a circuit diagram of the carrier coupling unit of the present invention.
Fig. 4 is the circuit diagram of the power down detection unit of the present invention.
In the figure: 1. a power-down detection unit; 2. a zero-crossing detection unit; 3. a carrier coupling unit; 4. a power amplifying unit; 5. and a carrier communication chip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the communication module of the intelligent circuit breaker includes a power failure detection unit 1, a zero-crossing detection unit 2, a carrier coupling unit 3, a power amplification unit 4 and a carrier communication chip 5; the power failure detection unit 1, the zero-crossing detection unit 2 and the carrier coupling unit 3 are all connected with an alternating voltage signal, the carrier coupling unit 3 is electrically connected with the power amplification unit 4, and the carrier communication chip 5 is respectively electrically connected with the power failure detection unit 1, the zero-crossing detection unit 2 and the power amplification unit 4. And the carrier communication chip 5 is used for communicating network data transmission on a low-voltage power line based on a broadband power line carrier technology.
As shown in the circuit diagram of the ZERO-crossing detection unit 2 shown in fig. 2, the ZERO-crossing detection unit 2 detects a positive ZERO-crossing point of a grid voltage signal, when an alternating voltage is in a negative half cycle, the diode D11, the resistor R23 and the resistor R24 charge the capacitor C15 and the capacitor C16, the diode D9 stabilizes the voltage at 7.5V, the diode D11 is turned off in a reverse direction in the positive half cycle of the alternating voltage, the triode Q3 is opened by the capacitor C15 and the capacitor C16 through the resistor R25 and the resistor R28, the optocoupler U1 is turned on, the PLC _ ZERO outputs a high level, after the capacitor is discharged, the PLC _ ZERO output is changed low again, the signal is transmitted to the carrier communication chip 5, and the carrier communication chip 5 determines the topology structure of a grid area according to the time point of the pulse and the time point of other similar devices on the grid; meanwhile, when the main control chip detects that the voltage is lower than a certain value, a power failure signal is generated to inform the carrier communication chip 5, and at the moment, the carrier communication chip 5 does not detect a zero-crossing signal, so that the carrier communication chip 5 sends a power failure event to a concentrator in the power grid.
As shown in fig. 3, the carrier communication chip 5 converts data to be transmitted into a differential signal, and transmits the differential signal to a power amplifier of the power amplification unit 4 for power amplification, the power amplifier is of a type THS6222, the amplified differential signal is connected to a PLC +, a PLC —, of a coupling transformer in the carrier coupling unit 3, and the differential signal is amplified by the transformer 1: 1 is isolated and converted and then is coupled to UA, UB and UC three phases of the power grid through capacitors. On the contrary, the management equipment on the power network sends out relevant instructions to the circuit breaker in a carrier mode, and the carrier signal firstly transmits the signal to the coupling transformer through the coupling capacitor, and the signal is transmitted to the coupling transformer through the following steps of 1: 1, transmitting the differential signal to a carrier communication chip 5 after isolation conversion, and decoding the signal by the carrier communication chip 5 so as to complete communication between the circuit breaker and other equipment on the network.
As shown in fig. 4, the power-down detection circuit on the power-down detection unit 1 monitors the power supply voltage through a voltage dividing circuit formed by a resistor R117 and a resistor R118, and when the power supply voltage is lower than a certain value, the power-down of the power grid is determined, and at this time, the carrier communication chip 5 determines whether the power-down is really performed according to whether a zero-crossing signal exists, and if the power-down is really performed, the power-down event is reported through the carrier.
The intelligent circuit breaker communication module is 30-40mm in length and 3-4mm in width. Preferably, the length of the intelligent circuit breaker communication module is 30mm, and the width of the intelligent circuit breaker communication module is 3 mm. The carrier module is a miniaturized carrier module, the size of the miniaturized carrier module is 1/3 or 1/2 of the communication module of the similar circuit breaker, the miniaturization characteristic of the carrier module is reflected, a power transmission network is used for communication and data transmission, the communication speed is improved, field operation is not needed, and network construction cost is not increased, so that the cost of manpower and material resources is greatly saved, and the miniaturized carrier module becomes a mainstream technology of communication in the power field at present.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides an intelligence circuit breaker communication module which characterized in that: the power failure detection device comprises a power failure detection unit (1), a zero-crossing detection unit (2), a carrier coupling unit (3), a power amplification unit (4) and a carrier communication chip (5); the power failure detection unit (1), the zero-crossing detection unit (2) and the carrier coupling unit (3) are all connected with alternating voltage signals, the carrier coupling unit (3) is electrically connected with the power amplification unit (4), the power amplification unit (4) is electrically connected with the carrier communication chip (5), and the carrier communication chip (5) is respectively electrically connected with the power failure detection unit (1) and the zero-crossing detection unit (2).
2. The intelligent circuit breaker communication module of claim 1, wherein: and the carrier communication chip (5) is used for transmitting communication network data on a low-voltage power line based on a broadband power line carrier technology.
3. The intelligent circuit breaker communication module of claim 1, wherein: the circuit of the power amplification unit (4) comprises a power amplifier, and the type of the power amplifier is THS 6222.
4. The intelligent circuit breaker communication module of claim 1, wherein: the power failure detection unit (1) comprises a voltage division circuit, the voltage division circuit is connected with a power supply, and the voltage division circuit is used for monitoring the power supply voltage.
5. The intelligent circuit breaker communication module of claim 1, wherein: the carrier coupling unit (3) comprises a carrier coupling circuit, and the carrier coupling circuit comprises a coupling transformer and a coupling capacitor which realize bidirectional communication with the carrier communication chip (5).
6. The intelligent circuit breaker communication module of claim 1, wherein: the zero-crossing detection unit (2) detects the positive zero-crossing point of a power grid voltage signal, a circuit of the zero-crossing detection unit (2) comprises a photoelectric coupler, and the photoelectric coupler on the zero-crossing detection unit (2) is electrically connected with the carrier communication chip (5).
7. The intelligent circuit breaker communication module of claim 1, wherein: the intelligent circuit breaker communication module is 30-40mm in length and 3-4mm in width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120136957.4U CN213879816U (en) | 2021-01-19 | 2021-01-19 | Intelligent circuit breaker communication module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120136957.4U CN213879816U (en) | 2021-01-19 | 2021-01-19 | Intelligent circuit breaker communication module |
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| CN213879816U true CN213879816U (en) | 2021-08-03 |
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| CN202120136957.4U Active CN213879816U (en) | 2021-01-19 | 2021-01-19 | Intelligent circuit breaker communication module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200227A (en) * | 2021-11-18 | 2022-03-18 | 深圳市榆钱科技有限公司 | Low-voltage line detection terminal |
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2021
- 2021-01-19 CN CN202120136957.4U patent/CN213879816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200227A (en) * | 2021-11-18 | 2022-03-18 | 深圳市榆钱科技有限公司 | Low-voltage line detection terminal |
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