Integrated intelligent transformer area concentrator

Abstract

The utility model relates to the technical field of power concentrators, in particular to an integrated intelligent transformer area concentrator, which comprises a device body, and a power line carrier communication module, a voltage and current acquisition module, an analog-to-digital conversion module, an ARM (advanced RISC machines) microprocessor, a memory, a main power supply module and a standby battery power supply module are arranged in the device body. The voltage and current acquisition module is electrically connected with the analog-to-digital conversion module, the ARM micro-processor is electrically connected with the analog-to-digital conversion module, the memory and the power line carrier communication module, and relay switches are arranged between the ARM micro-processor and the main power supply module and between the ARM micro-processor and the standby battery power supply module. The ARM microprocessor is electrically connected with the main power supply module and the standby battery power supply module through the relay switch.

Description

Technical Field

[0001] The utility model relates to the technical field of power concentrators, in particular to an integrated intelligent area concentrator. Background Art

[0002] The substation concentrator in the power system is a key device in the low-voltage centralized meter reading system. It can automatically read and store the power consumption data of other concentrators and various communication terminal meters through the downlink carrier channel. It can also collect external 485 electric energy meter data and transmit data with the server master station or mobile device through the uplink channel.

[0003] At present, in order to prevent the influence of AC power in the substation on the collection of electricity consumption data and avoid the interference of unstable AC power factors on data accuracy, most substation concentrators are equipped with energy storage batteries for self-powered operation. However, the power supply of the energy storage battery is fixed. When the power of the energy storage battery is consumed, it needs to be replaced manually, which is not conducive to the long-term operation of the equipment and also increases the workload of the operation and maintenance personnel. There are certain disadvantages in building a smart grid to realize electricity consumption data collection. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides an integrated intelligent substation concentrator, including a device body, wherein a power carrier communication module, a voltage and current acquisition module, an analog-to-digital conversion module, an ARM microprocessor, a memory, a main power supply module and a backup battery power supply module are arranged inside the device body, the voltage and current acquisition module is electrically connected to the analog-to-digital conversion module, the ARM microprocessor is electrically connected to the analog-to-digital conversion module, the memory and the power carrier communication module respectively, the main power supply module includes a transformer, a rectifier bridge, a filter circuit and a DC voltage regulator, the transformer is connected to the input end of the rectifier bridge, and the output end of the rectifier bridge is electrically connected to the DC voltage regulator after passing through the filter circuit; a relay switch is also arranged between the ARM microprocessor and the main power supply module and the backup battery power supply module, and the ARM microprocessor is electrically connected to the main power supply module and the backup battery power supply module respectively through the relay switch.

[0005] A display panel is provided at the upper end of the front surface of the device body, and a terminal block is provided at the lower end of the device body. The display panel is electrically connected to the ARM microprocessor, and the terminal block is electrically connected to the voltage and current acquisition module, the power carrier communication module and the main power supply module respectively.

[0006] The model of the rectifier bridge is KBL410; the model of the DC voltage regulator is LM7805.

[0007] In order to prevent the influence of unstable AC voltage on the collection of power consumption data, the voltage and current collection module is connected to the terminal block through an isolation circuit.

[0008] In order to realize the acquisition and reception of carrier communication by the device body, the power carrier communication module is composed of a signal coupling circuit, a signal modulation and demodulation circuit and a carrier communication unit which are electrically connected in sequence.

[0009] The display panel is embedded with a liquid crystal display screen, and is also provided with buttons and panel indicator lights.

[0010] A wireless communication module is also arranged inside the device body, and the wireless communication module is electrically connected to the ARM microprocessor.

[0011] The terminal block comprises a three-phase voltage terminal, a three-phase current terminal, a remote signal terminal and an RS485 terminal.

[0012] In order to achieve long-term stable operation of the device body, the main power supply module is also electrically connected to the backup battery power supply module through a charging circuit, and the main power supply module can charge the backup battery power supply module while supplying power.

[0013] In a specific implementation, the backup battery power supply module is powered by a lithium battery.

[0014] The beneficial effects are as follows: the utility model is an integrated intelligent substation concentrator, which realizes the collection of electricity consumption data by integrating a power carrier communication module, a voltage and current acquisition module and an ARM microprocessor, and is equipped with a main power supply module and a backup battery power supply module to provide the equipment with a stable and reliable power supply voltage. At the same time, it can automatically switch when the power transmission line is powered off to ensure that the substation concentrator collects electricity consumption data in real time. By setting a display panel at the upper front surface of the device body, it is convenient for operation and maintenance personnel to view and set equipment parameters through the LCD display, thereby improving the convenience of operation. A terminal block is set at the lower end of the device body for convenient connection with other devices. The application of the integrated intelligent substation concentrator helps to improve the operating efficiency and management level of the power system, reduce operation and maintenance costs, and provide strong support for achieving the development goals of the smart grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the circuit structure diagram of the integrated intelligent area concentrator;

[0016] Figure 2 It is a structural diagram of the device body;

[0017] The components represented by the reference numerals in the figure are:

[0018] 1. Device body; 2. Display panel; 3. Terminal block; 4. LCD display; 5. Buttons. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0020] Example

[0021] See also Figure 1-Figure 2 This embodiment provides an integrated intelligent area concentrator, including a device body 1, a display panel 2 is provided at the upper end of the front surface of the device body 1, and a liquid crystal display screen 4 is embedded in the display panel 2. The liquid crystal display screen 4 is used to display the communication status of the device, the reading data, etc., and a button 5 and a panel indicator light are provided on the right side of the liquid crystal display screen 4. A terminal row 3 is provided at the lower end of the device body 1, and the terminal row includes a three-phase voltage terminal, a three-phase current terminal, a remote signal terminal and an RS485 terminal, wherein the three-phase voltage terminal is used to connect the A, B, and C phases of the three-phase transmission line, and an N-phase terminal is also provided. The RS485 terminal can be connected to an external electric energy meter through RS485_A and RS485_B connecting lines to realize the reading of electric energy meter data.

[0022] The terminal block 3 is electrically connected to the three-phase transmission line. A main power supply module and a power carrier communication module are arranged inside the device body 1. The main power supply module and the power carrier communication module are electrically connected to the terminal block 3 respectively. The main power supply module can directly draw power through the three-phase transmission line and convert it into direct current for device operation; the power carrier communication module can receive the carrier signal transmitted by the power line through the three-phase transmission line.

[0023] In order to realize the collection of power consumption data by the substation concentrator, a voltage and current collection module, an analog-to-digital conversion module, an ARM microprocessor, a memory and a wireless communication module are also provided inside the device body 1. One end of the voltage and current collection module is electrically connected to the terminal block 3 via an isolation circuit, and the other end is electrically connected to the analog-to-digital conversion module. The voltage and current collection module can collect voltage and current signals of the three-phase transmission line, and the analog-to-digital conversion module can convert the collected voltage and current signals into digital signals, and connect the communication pins of the ARM microprocessor through serial communication to transmit the digital signals to the ARM microprocessor. The ARM microprocessor is electrically connected to the liquid crystal display 4 and the memory respectively, and the memory is used to receive the power consumption data of the ARM microprocessor for real-time storage; the ARM microprocessor is also electrically connected to the power carrier communication module and the wireless communication module respectively, and the power carrier communication module includes a signal coupling circuit, a signal modulation and demodulation circuit and a carrier communication unit. The signal coupling circuit couples the carrier signal of the three-phase transmission line and sends it to the signal modulation and demodulation circuit for carrier signal demodulation. The demodulated carrier signal is transmitted to the carrier communication unit, and is transmitted to the memory by the carrier communication unit for real-time storage. When the wireless communication module receives the command signal from the server host or the mobile terminal, the ARM microprocessor forwards the transmission by calling the power consumption data in the memory.

[0024] In order to ensure that the substation concentrator can be powered and operated in real time, a backup battery power supply module and a relay switch are also provided inside the substation concentrator. The backup battery power supply module and the main power supply module are electrically connected to the relay switch respectively, and the ARM microprocessor is electrically connected to the relay switch. Under normal conditions, the device body 1 is powered by the main power supply module, and the main power supply module includes a transformer, a rectifier bridge, a filter circuit and a DC voltage regulator. The rectifier bridge model is KBL410; the DC voltage regulator model is LM7805; the primary side of the transformer is connected to the terminal block 3, and its secondary side is connected to the AC input pin of the rectifier bridge. The DC output pin of the rectifier bridge is connected to the input pin of the DC voltage regulator by connecting a filter capacitor. The rectifier bridge rectifies the AC power into DC power, and after filtering by the filter circuit, it enters the DC voltage regulator for voltage stabilization, thereby achieving stable DC power supply.

[0025] When the three-phase transmission line is in a power-off state, in order to ensure that the substation concentrator can operate normally, the device body 1 switches to the backup battery power supply module through the relay switch for self-powering. The ARM microprocessor collects the backup battery power supply module in real time. When the power consumption ends, the wireless communication module promptly reminds the operation and maintenance personnel to replace the battery, thereby reducing the operation and maintenance cost. When the three-phase transmission line is powered on again, the main power supply module is energized, and the relay switch is switched back to the main power supply module for power supply. At the same time, the main power supply module is also electrically connected to the backup battery power supply module through the charging circuit, and can charge the backup battery power supply module. The backup battery power supply module can be powered by a lithium battery.

Claims

1. An integrated intelligent area concentrator, comprising a device body, characterized in that: The device body is provided with a power carrier communication module, a voltage and current acquisition module, an analog-to-digital conversion module, an ARM microprocessor, a memory, a main power supply module and a backup battery power supply module. The voltage and current acquisition module is electrically connected to the analog-to-digital conversion module, and the ARM microprocessor is electrically connected to the analog-to-digital conversion module, the memory and the power carrier communication module respectively. The main power supply module includes a transformer, a rectifier bridge, a filter circuit and a DC voltage regulator. The transformer is connected to the input end of the rectifier bridge, and the output end of the rectifier bridge is electrically connected to the DC voltage regulator after passing through the filter circuit. A relay switch is also arranged between the ARM microprocessor and the main power supply module and the backup battery power supply module. The ARM microprocessor is electrically connected to the main power supply module and the backup battery power supply module respectively through the relay switch.

2. The integrated intelligent area concentrator according to claim 1, characterized in that: A display panel is provided at the upper end of the front surface of the device body, and a terminal block is provided at the lower end of the device body. The display panel is electrically connected to the ARM microprocessor, and the terminal block is electrically connected to the voltage and current acquisition module, the power carrier communication module and the main power supply module respectively.

3. The integrated intelligent area concentrator according to claim 1, characterized in that: The model of the rectifier bridge is KBL410; the model of the DC voltage regulator is LM7805.

4. The integrated intelligent area concentrator according to claim 1, characterized in that: The main power supply module is also electrically connected to the backup battery power supply module through a charging circuit.

5. The integrated intelligent area concentrator according to claim 1, characterized in that: The voltage and current acquisition module is connected to the wiring terminal block through an isolation circuit.

6. The integrated intelligent area concentrator according to claim 1, characterized in that: The power carrier communication module is composed of a signal coupling circuit, a signal modulation and demodulation circuit and a carrier communication unit which are electrically connected in sequence.

7. The integrated intelligent area concentrator according to claim 2, characterized in that: The display panel is embedded with a liquid crystal display screen, and is also provided with buttons and panel indicator lights.

8. The integrated intelligent area concentrator according to claim 1, characterized in that: A wireless communication module is also arranged inside the device body, and the wireless communication module is electrically connected to the ARM microprocessor.

9. The integrated intelligent area concentrator according to claim 2, characterized in that: The terminal block comprises a three-phase voltage terminal, a three-phase current terminal, a remote signal terminal and an RS485 terminal.

10. The integrated intelligent area concentrator according to claim 4, characterized in that: The backup battery power supply module is powered by a lithium battery.

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