CN220067420U - Narrow-band carrier communication device for power monitoring system - Google Patents
Narrow-band carrier communication device for power monitoring system Download PDFInfo
- Publication number
- CN220067420U CN220067420U CN202321422144.7U CN202321422144U CN220067420U CN 220067420 U CN220067420 U CN 220067420U CN 202321422144 U CN202321422144 U CN 202321422144U CN 220067420 U CN220067420 U CN 220067420U
- Authority
- CN
- China
- Prior art keywords
- carrier
- coupling
- voltage
- circuit
- mcu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 title claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 54
- 238000010168 coupling process Methods 0.000 claims abstract description 54
- 238000005859 coupling reaction Methods 0.000 claims abstract description 54
- 239000003990 capacitor Substances 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 9
- 239000000969 carrier Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a narrow-band carrier communication device for a power monitoring system, which comprises an MCU and a carrier controller, wherein the MCU is connected to the carrier controller; the device also comprises a voltage acquisition circuit, a carrier coupling circuit and a coupling voltage control circuit; the carrier controller is connected to a power line through a carrier coupling circuit; the voltage acquisition circuit is connected to the MCU, the MCU is also connected to the coupling voltage control circuit, and the coupling voltage control circuit is connected to the carrier coupling circuit; after the voltage acquisition circuit acquires the working voltage of the power line, the MCU controls the carrier coupling circuit by adjusting the coupling voltage control circuit, so that the carrier coupling circuit realizes different coupling working voltages. The utility model can work on a power line with a wide voltage working range.
Description
Technical Field
The utility model relates to the technical field of power systems, in particular to a narrow-band carrier communication device for a power monitoring system.
Background
The communication modes commonly used for communication between the power monitoring system management platform and the measurement and control unit include RS485, network cables, optical fibers and power carriers. The RS485, the network cable and the optical fiber all need to be independently laid with cables, and the construction is inconvenient. The power line between the power supply unit and the measurement and control unit can be utilized by the power carrier, the data information is loaded on the power line through the carrier communication equipment, and the power line is utilized for communication.
The power carriers are classified into wideband carriers and narrowband carriers. The broadband carrier communication speed is high, but the distance is relatively short, and the cost is high, but the existing narrowband carrier communication device has the defects of narrow power line working voltage range (fixed 220V or 380V power line working voltage) and the like, and cannot be used for a dynamic voltage power network, so that the application is less.
Disclosure of Invention
The utility model aims to provide a narrow-band carrier communication device for a power monitoring system, which solves the problem that the conventional narrow-band carrier communication device can only be used on a power line with fixed voltage.
The technical scheme for realizing the aim of the utility model is as follows: a narrow-band carrier communication device for a power monitoring system comprises an MCU and a carrier controller, wherein the MCU is connected to the carrier controller; the device also comprises a voltage acquisition circuit, a carrier coupling circuit and a coupling voltage control circuit; the carrier controller is connected to a power line through a carrier coupling circuit; the voltage acquisition circuit is connected to the MCU, the MCU is also connected to the coupling voltage control circuit, and the coupling voltage control circuit is connected to the carrier coupling circuit; after the voltage acquisition circuit acquires the working voltage of the power line, the MCU dynamically adjusts the coupling voltage control circuit to control the carrier coupling circuit, so that the carrier coupling circuit realizes different coupling working voltages.
The preferable technical scheme is that the voltage acquisition circuit comprises a voltage transformer and an operational amplifier; the primary side of the voltage transformer is connected in parallel to the power line, the secondary side of the voltage transformer is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the MCU; the carrier coupling circuit comprises an isolation transformer, a plurality of high-frequency capacitors and relays with the same number as the high-frequency capacitors; the primary winding of the isolation transformer is connected to the carrier controller; the input end of each high-frequency capacitor is connected to one end of the secondary winding of the isolation transformer through a switch of a relay respectively; after all the high-frequency capacitors are connected in series, the output end of the high-frequency capacitors and the other end of the secondary winding of the isolation transformer are connected in parallel to a power line; the coupling voltage control circuit comprises control branches with the same number as the relays, and one control branch controls the switch of one relay to be switched on or off.
The utility model can realize different coupling working voltages and can work on a power line with a wide voltage working range.
Drawings
Fig. 1 is a system configuration diagram of the present utility model.
Fig. 2 is a circuit diagram of an embodiment.
FIG. 3 is a circuit diagram of a coupled voltage control circuit in an embodiment.
Detailed Description
In the existing narrow-band carrier communication device, the MCU sends data information acquired from the measurement and control unit to the carrier controller through the serial bus, the data information is modulated into a power carrier signal by the carrier controller, and the power carrier signal is coupled to a power line through the coupling circuit. When other carrier communication device nodes transmit data on the power line, the coupling circuit couples the carrier signal to the carrier controller, the carrier controller demodulates the carrier signal into a standard serial bus signal which can be identified by the MCU, and the MCU analyzes and processes the standard serial bus signal and transmits the standard serial bus signal to the measurement and control unit.
The utility model has the power line voltage detection circuit, the carrier coupling circuit is a dynamic coupling network circuit capable of adjusting the working voltage, and the microcontroller judges the working voltage required by the coupling network to dynamically adjust after the power line voltage is acquired, so that different coupling working voltages are realized, and the power line can work in a wide voltage working range.
As shown in fig. 1, the carrier controller is connected to a power supply/power carrier interface through a carrier coupling circuit; the input voltage acquisition circuit is connected to the power supply/power carrier interface and the MCU, and the MCU is also connected to the coupling voltage control circuit, and the coupling voltage control circuit is connected to the carrier coupling circuit. The power supply module is used for supplying power to each circuit. After the input voltage acquisition circuit acquires the working voltage of the power line, the MCU dynamically adjusts the coupling voltage control circuit and controls the carrier coupling circuit, so that the carrier coupling circuit realizes different coupling working voltages.
Examples
As shown in fig. 2, the voltage acquisition circuit includes a voltage transformer and an operational amplifier; the primary side of the voltage transformer is connected in parallel to the power line, the secondary side of the voltage transformer is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the MCU; the carrier coupling circuit comprises an isolation transformer, a plurality of high-frequency capacitors and relays with the same number as the high-frequency capacitors; the primary winding of the isolation transformer is connected to the carrier controller; the input end of each high-frequency capacitor is connected to one end of the secondary winding of the isolation transformer through a switch of a relay respectively; after all the high-frequency capacitors are connected in series, the output end of the high-frequency capacitors and the other end of the secondary winding of the isolation transformer are connected in parallel to a power line.
As shown in fig. 3, the coupling voltage control circuit includes control branches with the same number as the relays, and one control branch controls the switch of one relay to be switched on or off.
In the embodiment, the carrier coupling circuit is composed of 4 high-frequency capacitors X1-X4, 4 high-voltage-resistant solid-state relays G1-G4 and a T1 isolation transformer. The voltage on the power line is converted into a small signal by a voltage transformer T2, and the operating voltage on the power line is obtained through MCU calculation after the signal is conditioned by an operation discharger. The MCU controls the switch of the G1-G4 solid state relay by adjusting the output of the openSW1-SW1, so that different coupling working voltages are realized by different serial numbers of the coupling circuits X1-X4, and the purpose of dynamically adjusting the working voltage of the power line is achieved. Thus, the narrowband carrier communication device can operate on a carrier communication power line in a wide voltage operating range (220V-1.5 KV).
Claims (2)
1. A narrow-band carrier communication device for a power monitoring system comprises an MCU and a carrier controller, wherein the MCU is connected to the carrier controller; the device is characterized by further comprising a voltage acquisition circuit, a carrier coupling circuit and a coupling voltage control circuit; the carrier controller is connected to a power line through a carrier coupling circuit; the voltage acquisition circuit is connected to the MCU, the MCU is also connected to the coupling voltage control circuit, and the coupling voltage control circuit is connected to the carrier coupling circuit;
after the voltage acquisition circuit acquires the working voltage of the power line, the MCU dynamically adjusts the coupling voltage control circuit to control the carrier coupling circuit, so that the carrier coupling circuit realizes different coupling working voltages.
2. A narrowband carrier communication device for a power monitoring system as recited in claim 1, wherein:
the voltage acquisition circuit comprises a voltage transformer and an operational amplifier; the primary side of the voltage transformer is connected in parallel to the power line, the secondary side of the voltage transformer is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the MCU;
the carrier coupling circuit comprises an isolation transformer, a plurality of high-frequency capacitors and relays with the same number as the high-frequency capacitors; the primary winding of the isolation transformer is connected to the carrier controller; the input end of each high-frequency capacitor is connected to one end of the secondary winding of the isolation transformer through a switch of a relay respectively; after all the high-frequency capacitors are connected in series, the output end of the high-frequency capacitors and the other end of the secondary winding of the isolation transformer are connected in parallel to a power line;
the coupling voltage control circuit comprises control branches with the same number as the relays, and one control branch controls the switch of one relay to be switched on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321422144.7U CN220067420U (en) | 2023-06-06 | 2023-06-06 | Narrow-band carrier communication device for power monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321422144.7U CN220067420U (en) | 2023-06-06 | 2023-06-06 | Narrow-band carrier communication device for power monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220067420U true CN220067420U (en) | 2023-11-21 |
Family
ID=88751300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321422144.7U Active CN220067420U (en) | 2023-06-06 | 2023-06-06 | Narrow-band carrier communication device for power monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220067420U (en) |
-
2023
- 2023-06-06 CN CN202321422144.7U patent/CN220067420U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211293214U (en) | Automatic test system for whole train cable of motor train unit | |
| CN110045709A (en) | One kind being based on EtherCAT technical grade remote I/O module | |
| KR101278125B1 (en) | Dimming control apparatus using sensing of volts alternating current in power line communication | |
| CN111555443A (en) | Modularized series synchronous compensation system and control method thereof | |
| CN220067420U (en) | Narrow-band carrier communication device for power monitoring system | |
| CN205404716U (en) | Fault detection device and object transmission detection system of correlation sensor | |
| KR101413410B1 (en) | Power Line Comminication System Based on Constant Current Source | |
| CN217469917U (en) | Channel switching circuit and electronic equipment | |
| CN205901734U (en) | Bimodulus communication controller | |
| CN210405304U (en) | High-voltage power line carrier coupling system | |
| CN210954286U (en) | Wireless lighting monitoring and electric measuring device | |
| CN113541187A (en) | Intermediate frequency sine wave alternating current power supply parallel operation system and control system thereof | |
| CN113542925A (en) | Transmission system and transmission method for transmitter signal power information | |
| CN220823073U (en) | Power line carrier communication transmission circuit and power line carrier communication device | |
| CN219577066U (en) | Data access circuit of data acquisition unit | |
| CN112383973A (en) | Wireless network bridge | |
| CN211702035U (en) | Control system for digital optical fiber repeater | |
| CN110673059A (en) | Wireless lighting monitoring and electric measuring device | |
| CN216485216U (en) | ETC portal remote power tuner | |
| CN218446431U (en) | ATC test system for railway vehicle | |
| CN210491291U (en) | A centralized control ware for wisdom lighting control system | |
| CN220022972U (en) | Communication box, communication system and monitoring system | |
| CN215818139U (en) | Power line carrier communication system and air conditioning system | |
| CN220087304U (en) | Vehicle-mounted Ethernet communication plug-in unit | |
| CN219627741U (en) | Circuit system of network hand-in-hand technology and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |