CN212459820U - Power distribution comprehensive protection device - Google Patents
Power distribution comprehensive protection device Download PDFInfo
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- CN212459820U CN212459820U CN202020276060.7U CN202020276060U CN212459820U CN 212459820 U CN212459820 U CN 212459820U CN 202020276060 U CN202020276060 U CN 202020276060U CN 212459820 U CN212459820 U CN 212459820U
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Abstract
The utility model relates to a distribution integrated protection device with cable temperature detects function. Including central processing unit, central processing unit be connected with voltage detection unit, current detection unit and temperature detecting element respectively, voltage detection unit gather the voltage that the three-phase was exchanged, current detection unit gather the current that the three-phase was exchanged, temperature detecting element install and gather the cable temperature on the cable, central processing unit still connect memory cell, communication unit and human-computer interaction unit, voltage detection unit, current detection unit and temperature detecting element detect data transmission to central processing unit and pass through the memory cell storage, present through the human-computer interaction unit. The utility model discloses a monitor distribution site voltage, electric current, cable temperature to can communicate with remote server, can conveniently realize distribution site protection and control, have fine market prospect.
Description
Technical Field
The utility model relates to a distribution integrated protection field, concretely relates to distribution integrated protection device with cable temperature detects function.
Background
A large number of small household enterprises exist in domestic regions with developed civil and economic benefits, the power distribution system of the small household enterprises has insufficient protection on power utilization safety, and most residential power distribution is only realized by adopting circuit breakers. And the protection effect on overvoltage and undervoltage, phase loss and cable overheating cannot be realized, and the frequent occurrence of electrical safety accidents is realized. The power supply department needs to remotely monitor the small household enterprises, and the power utilization condition of the small household enterprises is monitored, so that hidden dangers can be eliminated conveniently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distribution integrated protection device who has a cable temperature detection function to the prior art not enough. The monitoring of the voltage, the current and the cable temperature of the power distribution system of a small enterprise can be completed, and the data uploading is completed by communicating with a power supply office through wireless communication.
Therefore, the utility model adopts the following technical proposal: the utility model provides a distribution integrated protection device, its characterized in that includes central processing unit, central processing unit be connected with voltage detection unit, current detection unit and temperature detecting element respectively, voltage detection unit gather the voltage that the three-phase was exchanged, current detection unit gather the current that the three-phase was exchanged, temperature detecting element install and gather the cable temperature on the cable, central processing unit still connect memory cell, communication unit and human-computer interaction unit, voltage detection unit, current detection unit and temperature detecting element detect data transfer to central processing unit and pass through the memory cell storage, present through the human-computer interaction unit.
The human-computer interaction unit is a computer, a mobile phone or a pad.
The human-computer interaction unit is a computer and comprises a liquid crystal display and a keyboard.
The communication unit comprises a serial port communication unit and a wireless communication unit, and the wireless communication unit is composed of a GPRS module.
The wireless communication unit is connected with a mobile phone, a pad or a cloud system, and the serial port unit communication unit is connected with a circuit breaker.
The memory unit is composed of an EEPROM memory and a FLASH memory and is connected with the central processing unit by an I2C bus and an SPI bus.
The system also comprises a real-time clock unit connected with the central processing unit.
The utility model discloses a monitor distribution site voltage, electric current, cable temperature to can communicate with remote server, can conveniently realize distribution site protection and control, have fine market prospect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
Detailed Description
The following describes a concentric dual-axis control mechanism according to the present invention in further detail with reference to the accompanying drawings.
As shown in figure 1, the invention is arranged at the wire inlet side of a power distribution cabinet of an enterprise and comprises a voltage detection unit, a current detection unit, a temperature detection unit, a central processing unit, a man-machine interaction unit, a serial communication unit, a wireless communication unit, a real-time clock and a storage unit.
The voltage detection unit is connected with the central processing unit after collecting the three-phase alternating-current voltage. The current detection unit is connected with the central processing unit after collecting the three-phase alternating current. The temperature detection unit is arranged on the cable and connected with the central processing unit after collecting the temperature of the cable.
The central processing unit is also connected with the serial port communication unit, the wireless communication unit, the real-time clock and the storage unit respectively.
The man-machine interaction unit comprises a liquid crystal display and a keyboard.
The central processing unit converts the collected three-phase voltage, current and cable temperature signals into digital signals for processing, and sends alarm information to the power supply office server through the wireless communication unit connected with the central processing unit when faults occur (overvoltage, undervoltage, phase failure and overhigh temperature). The serial communication unit can be connected with an external circuit breaker, and the central processing unit controls the circuit breaker to open and isolate faults through the serial communication unit when faults occur.
The man-machine interaction unit comprises a liquid crystal display and a keyboard. Liquid crystal displays display various parameters such as voltage, current, temperature, etc. The keyboard is used for inputting information by a user and is matched with the liquid crystal display to complete the functions of setting various parameters and inquiring information. The man-machine interaction unit can also be mobile equipment such as a mobile phone, a pad and the like, and is connected through the wireless communication unit.
The storage unit is composed of an EEPROM (electrically erasable programmable read-Only memory) and a FLASH memory, is connected with the central processing unit by adopting an I2C bus and an SPI (Serial peripheral interface) bus, the EEPROM memory is used for storing a small amount of setting data, and the FLASH memory is used for storing large-capacity historical data.
Fig. 2 is a circuit diagram of an embodiment of the present invention.
A current detection unit: the current transformer CT1 collects line current (for simplicity of description, a circuit diagram shows only one current transformer, and there may be three transformers in practical application), the current transformer CT1 is converted into a voltage signal through a resistor R11, and the voltage signal is sent to the microcontroller U4 through an amplifying circuit formed by diodes D2, D3, operational amplifier U3A, resistors R9, R10, R11, R12, R13, R14, and a capacitor C1.
The voltage detection unit is composed of a voltage transformer T1 (for simplicity of description, a circuit diagram only shows one voltage transformer, and three transformers can be provided in practical application), a resistor R15 and a resistor R16, wherein the voltage transformer T1 collects system alternating voltage, and a signal output by the voltage transformer T1 is divided by the resistors R15 and R16 and then sent to the microcontroller U4.
The temperature detection unit is composed of a thermal resistor RT1 and a resistor R17. Thermal resistor RT1 is mounted on the cable, and changes in cable temperature cause the resistance of RT1 to change. The thermal resistor RT1 and the resistor R17 divide the voltage of the power supply, and the divided voltage signal is in proportional relation with the temperature of the cable and is connected with the microcontroller U4.
The central processing unit is composed of a microcontroller (STM32F41) which is U4, and capacitors C2 and C3 and a crystal oscillator CR1 provide clock signals for the microcontroller.
U5 is a large-capacity serial FALSH memory, and U6 is connected with microcontroller U4 by SPI bus. U6 is EEPROM memory, U6 is connected with microcontroller U4 by I2C bus. U5 stores historical data of voltage current temperature and U6 is used to store set parameter data.
The serial port communication unit is composed of an integrated circuit U2, a U2 is a 485 communication interface chip, and a U2 is connected with serial communication ports RX1 and TX1 of a microcontroller U3.
The IC2 is a high-precision real-time clock chip, the IC2 is connected with a microcontroller U3 by an I2C bus, and the microcontroller U3 reads a clock value in the IC 2.
The man-machine interaction unit comprises a liquid crystal display and a keyboard.
The IC1 is a liquid crystal display, the IC1 is connected with the microcontroller U4, and the microcontroller U4 controls the IC1 to display various data.
Keys S1, S2, S3, S4 and S5 form a keyboard and are connected with an IO port of the microcontroller U4. The microcontroller U4 reads the key information and performs corresponding operations.
In the using process, an operator operates the keys S1, S2, S3, S4 and S5, and information is interacted through the liquid crystal display IC1 to complete functions of information inquiry, parameter setting and the like.
The wireless communication unit is composed of a GPRS module M1, and the GPRS module M1 is connected with the microcontroller U4 through a serial port. The microcontroller U4 carries out data communication with the power supply office server through the GPRS module M1 and reports alarm information.
The utility model discloses a monitor distribution site voltage, electric current, cable temperature to can communicate with remote server, can conveniently realize distribution site protection and control, have fine market prospect.
The above description is only an example of the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a distribution integrated protection device, its characterized in that includes central processing unit, central processing unit be connected with voltage detection unit, current detection unit and temperature detecting element respectively, voltage detection unit gather the voltage that the three-phase was exchanged, current detection unit gather the current that the three-phase was exchanged, temperature detecting element install and gather the cable temperature on the cable, central processing unit still connect memory cell, communication unit and human-computer interaction unit, voltage detection unit, current detection unit and temperature detecting element detect data transfer to central processing unit and pass through the memory cell storage, present through the human-computer interaction unit.
2. The integrated power distribution protection device according to claim 1, wherein the human-computer interaction unit is a computer, a mobile phone or a pad.
3. The integrated power distribution protection device according to claim 2, wherein the communication unit comprises a serial communication unit and a wireless communication unit, and the wireless communication unit is composed of a GPRS module.
4. A power distribution comprehensive protection device according to claim 3, characterized in that said memory unit is composed of EEPROM memory and FLASH memory, and is connected with central processor unit by I2C and SPI bus.
5. The integrated power distribution protection device of claim 1, further comprising a real time clock unit coupled to the central processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276060.7U CN212459820U (en) | 2020-03-09 | 2020-03-09 | Power distribution comprehensive protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276060.7U CN212459820U (en) | 2020-03-09 | 2020-03-09 | Power distribution comprehensive protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212459820U true CN212459820U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020276060.7U Active CN212459820U (en) | 2020-03-09 | 2020-03-09 | Power distribution comprehensive protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212459820U (en) |
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2020
- 2020-03-09 CN CN202020276060.7U patent/CN212459820U/en active Active
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