A lightning protection device for a power supply

Abstract

A power lightning protection device, the lightning protection circuit is connected between the input and output ports of the terminal; the master control chip circuit is interconnected with the remote signal detection, lightning stroke counting, 485 communication, ground detection and screen circuit respectively, the ground detection circuit is connected with the PE port, and each circuit is integrated in the box through the PCB. The device has compact structure, lightning protection device life indication, lightning stroke counting, ground state monitoring, remote communication and fault alarm function, which improves the protection efficiency and intelligent level.

Description

Technical Field

[0001] This utility model belongs to the field of lightning protection technology, specifically relating to a power supply lightning protection device. Background Technology

[0002] With the continuous advancement of technology, the functional requirements of lightning protection devices are also constantly increasing. Modern lightning protection devices not only need to have efficient protection capabilities against lightning overvoltage and switching overvoltage, but also should have functions such as lifespan indication and remote monitoring. The lifespan indication function allows users to monitor the working status of the lightning protection device in real time, so as to replace it in a timely manner, thereby effectively ensuring the safe and stable operation of the power system. The remote monitoring function enables remote management of the lightning protection device, significantly improving the efficiency of operation and maintenance and helping to reduce operation and maintenance costs.

[0003] In addition, in response to the complex and ever-changing power environment of modern times, lightning protection devices should also meet the functions of environmental and power equipment monitoring, such as temperature and humidity alarms, smoke alarms, and water immersion alarms, so as to provide users with timely and accurate working environment information data, facilitate maintenance personnel to complete necessary maintenance work in a timely and efficient manner, ensure the reliable, continuous and stable operation of the power system under extreme weather conditions, and significantly reduce maintenance costs.

[0004] However, current lightning protection devices on the market have significant shortcomings. Regarding lifespan indication, most products can only roughly determine the working status through simple remote signaling indicators, but cannot accurately predict the remaining lifespan. This makes it difficult for users to know the actual service life of the lightning protection device, potentially leading to failure to replace it in time when its performance deteriorates or even fails, thus affecting the safe and stable operation of the power system. In contrast, this invention, through a unique design combining a main control chip circuit with a lightning strike counting circuit, can accurately calculate the remaining lifespan of the lightning protection device, providing users with more accurate equipment status information, facilitating timely replacement, and effectively ensuring the safe and stable operation of the power system. Summary of the Invention

[0005] Addressing the aforementioned technological needs and shortcomings in the market, this utility model aims to provide a power supply surge protection device. It integrates multiple circuits within a single enclosure, including a surge protection circuit, a main control chip circuit, a remote signaling detection circuit, a lightning strike counting circuit, a 485 communication circuit, a grounding detection circuit, a screen circuit, an alarm circuit, and a transformer power supply circuit. Combined with a human-machine interface, it simultaneously achieves real-time monitoring of lightning protection, the lifespan of the surge protection device, lightning strike count, and grounding status, as well as fault alarms and remote communication. It is suitable for surge protection and intelligent management of power supply systems. Application scenarios typically include the power input terminals of UPS voltage regulators in computer rooms, communication rooms, monitoring rooms, and control rooms, as well as surge protection for the power input terminals of bank savings offices, offices, equipment cabinets, or any other equipment requiring surge protection.

[0006] This utility model is achieved through the following technical solution:

[0007] It includes a lightning protection circuit 1, a main control chip circuit 2, a remote signaling detection circuit 3, a lightning strike counting circuit 4, a 485 communication circuit 5, a grounding detection circuit 6, a screen circuit 7, an alarm circuit 8, a transformer power supply circuit 9, and a wiring terminal 10.

[0008] The terminal block 10 integrates input terminals L and N, output terminals L and N, and a grounding port PE. The lightning protection circuit 1 is connected between the input terminals L and N and the output terminals L and N.

[0009] The main control chip circuit 2 is interconnected with the remote signaling detection circuit 3, the lightning strike counting circuit 4, the 485 communication circuit 5, the grounding detection circuit 6, and the screen circuit 7.

[0010] The grounding detection circuit 6 is connected to the grounding port PE of the terminal block 10.

[0011] The transformer power supply circuit 9 is connected to the input terminals L and N of the terminal block 10, and is responsible for converting 5V and 3.3V power to provide the necessary operating power for the internal circuit.

[0012] It also includes a housing 11, which includes a front cover 111, a bottom cover 112, and an end plate 113; the lightning protection circuit 1, the main control chip circuit 2, the remote signaling detection circuit 3, the lightning strike counting circuit 4, the 485 communication circuit 5, the grounding detection circuit 6, the screen circuit 7, the alarm circuit 8, and the transformer power supply circuit 9 are fixedly installed inside the housing 11 via a PCB board.

[0013] The 485 communication circuit 5 is provided with a 485 communication interface 51, which is embedded in one side end plate 113 of the housing 11.

[0014] The screen circuit 7 is equipped with a serial port screen 71, which is embedded in the cover 111 of the housing 11.

[0015] The alarm circuit 8 is equipped with a working indicator light 81, a fault indicator light 82, and a mute button 83, which are respectively embedded in the cover 111 of the housing 11.

[0016] The transformer power supply circuit 9 is equipped with an overcurrent protection device 91, which is embedded in the cover 111 of the housing 11.

[0017] The terminal block 10 is embedded in one side end plate 113 of the housing 11, and is on the same side end plate 113 as the 485 communication interface 51.

[0018] Using a current impulse generator, tests were conducted according to GB / T 18802.11 standard, and the results showed that the lightning protection circuit 1 adopts specific lightning protection components or technical means, and the lightning protection technical parameters are configured as follows: nominal discharge current In≥20kA, maximum discharge current Imax≥40kA, and voltage protection level Up<1.0kV.

[0019] The working process and principle of this utility model are as follows:

[0020] The power surge protection device is connected to the external power input lines L and N through the input terminals L and N of terminal 10, and the output terminals L and N of terminal 10 are connected to the protected equipment. The grounding terminal PE of terminal 10 and the grounding terminal PE of the protected equipment are connected to the earth. When the overcurrent protection device 91 is turned on, the power surge protection device starts to operate. When a lightning surge or overvoltage or overcurrent enters the L and N power input lines, it passes through the surge protection circuit 1. The surge protection circuit 1 discharges the lightning surge or overvoltage or overcurrent to the earth through the grounding terminal PE and limits the voltage within the withstand range of the protected equipment, ensuring that the downstream protected equipment is not damaged and ensuring the normal operation of the system.

[0021] The main control chip circuit 2 is responsible for collecting data from the remote signaling detection circuit 2, lightning strike counting circuit 4, and grounding detection circuit 6. It then analyzes and processes this data using a built-in specific algorithm. For data from the remote signaling detection circuit 3, the main control chip circuit determines the equipment's operating status signal. For data from the lightning strike counting circuit 4, the main control chip records the number of lightning strikes and calculates the remaining lifespan of the lightning protection device based on a preset algorithm and other parameters. For data from the grounding detection circuit 6, the main control chip determines whether the grounding status is normal. The calculation results, along with the number of lightning strikes, grounding status, and current real-time time, are then transmitted to the screen circuit 7 and displayed on the serial port screen 71. This allows users to quickly and accurately take lightning protection measures based on this data, minimizing losses.

[0022] The RS485 communication interface 51 adopts an RS485 interface, follows the standard Modbus communication protocol, and supports data upload to the Internet of Things cloud platform. In addition, the RS485 communication interface 51 also has the function of connecting to environmental dynamic and environmental fixed equipment, and can display environmental information such as temperature, humidity, smoke, and water immersion on the serial port screen 71.

[0023] The alarm circuit 8 is equipped with a working indicator light 81, a fault indicator light 82, and a mute button 83, which are interconnected. The switching operation of the working indicator light 81 and the fault indicator light 82 is realized through the normally open and normally closed contacts of the relay. When the lightning protection device malfunctions, operates abnormally, or fails, the fault indicator light 82 and the buzzer in the alarm circuit 8 will realize an audible and visual alarm. The buzzer alarm sound is turned off by pressing the mute button 83.

[0024] Beneficial effects:

[0025] This invention relates to lightning protection for power system distribution boxes. The lightning protection box not only integrates the function of predicting the lifespan of SPDs (surge protectors), but also has real-time monitoring capabilities for data such as the number of lightning strikes, remote signal transmission, grounding status, fault status, and alarms. The monitoring data is output to the client via a standardized Modbus protocol. Compared to traditional methods that rely solely on remote signaling indications to determine the status of the lightning protection system, this invention can predict the performance of the lightning protection system based on the number of lightning strikes and the status of remote signaling transmission, and can issue early warning signals when potential damage risks occur. Furthermore, this invention integrates dynamic environmental monitoring functions, including the detection of environmental parameters such as temperature, humidity, smoke, and water immersion, and adopts a more flexible connection method to adapt to the needs of diverse communication power supplies and computer room environmental monitoring systems. Attached Figure Description

[0026] Figure 1 This is the circuit schematic diagram of this utility model; Figure 2 This is a structural diagram of the utility model.

[0027] 1-Lightning protection circuit; 2-Main control chip circuit; 3-Remote signaling detection circuit; 4-Lightning strike counting circuit; 5-485 communication circuit; 51-485 communication interface; 6-Grounding detection circuit; 7-Screen circuit; 71-Serial port screen; 8-Alarm circuit; 81-Work indicator light; 82-Fault indicator light; 83-Mute button; 9-Transformer power supply circuit; 91-Overcurrent protection device; 10-Terminal block; 11-Enclosure; 111-Face cover; 112-Bottom cover; 113-End plate. Detailed Implementation

[0028] Figure 1 The circuit schematic of this utility model is as follows:

[0029] The lightning protection circuit 1 is connected between the input terminals L and N and the output terminals L and N of the terminal block 10. When a lightning surge or overvoltage or overcurrent flows into the L and N power input lines, the lightning protection circuit 1 discharges the lightning surge or overvoltage or overcurrent to the ground through the grounding terminal PE, protecting the circuit and downstream equipment from damage by lightning strikes.

[0030] The main control chip circuit 2 is interconnected with the remote signaling detection circuit 3, the lightning strike counting circuit 4, the 485 communication circuit 5, the grounding detection circuit 6, and the screen circuit 7, respectively, and is responsible for collecting and processing the data of each circuit.

[0031] The 485 communication circuit 5 is equipped with a 485 communication interface 51, through which it communicates with external devices. The grounding detection circuit 6 is connected to the grounding port PE of the terminal block 10 to detect the grounding status.

[0032] The screen circuit 7 is equipped with a serial port screen 71 for displaying relevant data.

[0033] The alarm circuit 8 is equipped with a working indicator light 81, a fault indicator light 82, a buzzer, and a mute button 83 to realize working status indication, fault audible and visual alarm, and sound shutdown.

[0034] Figure 2 Here is the structural diagram of this utility model:

[0035] The lightning protection circuit 1, main control chip circuit 2, remote signaling detection circuit 3, lightning strike counting circuit 4, 485 communication circuit 5, grounding detection circuit 6, screen circuit 7, alarm circuit 8, and transformer power supply circuit 9 are fixedly installed inside the enclosure 11 via a PCB board.

[0036] The 485 communication interface 51 and the terminal block 10 are respectively embedded in the end plate 113 on the same side of the enclosure 11.

[0037] The serial port screen 71, the working indicator light 81, the fault indicator light 82, and the mute button 83 are embedded in the face cover 111 of the housing 11.

[0038] The alarm circuit 8 uses a buzzer as its sound alarm device. Buzzers are characterized by their loud and easily noticeable sound. When the lightning protection device malfunctions, operates abnormally, or fails, it can promptly issue a clear audible and visual alarm signal to alert the staff.

[0039] The transformer power supply circuit 9 is equipped with an overcurrent protection device 91. The overcurrent protection device 91 is an air switch and is embedded in the cover 111 of the housing 11. The air switch is chosen as the overcurrent protection device because it has the advantages of rapid action, reliable circuit disconnection, and protection of equipment from overload current damage. In addition, it is easy to install and maintain in this device, and can effectively ensure the safe operation of the transformer power supply circuit 9 and the entire device.

[0040] The lightning protection device achieves lightning protection through varistor-type and switch-type lightning protection components. The current generator equipment used is tested according to the voltage protection level test method of standard GB / T 18802.11. The parameters are as follows: nominal discharge current In≥20kA, maximum discharge current Imax≥40kA, and voltage protection level Up<1.0kV.

Claims

1. A lightning protection device for a power supply, characterized by: It includes a lightning protection circuit (1), a main control chip circuit (2), a remote signaling detection circuit (3), a lightning strike counting circuit (4), a 485 communication circuit (5), a grounding detection circuit (6), a screen circuit (7), an alarm circuit (8), a transformer power supply circuit (9), and a wiring terminal (10). The terminal block (10) integrates the input terminal L, N, the output terminal L, N, and the grounding port PE. The lightning protection circuit (1) is connected between the input terminal L, N and the output terminal L, N. The main control chip circuit (2) is interconnected with the remote signaling detection circuit (3), the lightning strike counting circuit (4), the 485 communication circuit (5), the grounding detection circuit (6), and the screen circuit (7); The grounding detection circuit (6) is connected to the grounding port PE of the terminal block (10); The transformer power supply circuit (9) is connected to the input terminals L and N of the terminal block (10).

2. The lightning protection device for power supply according to claim 1, characterized in that: It also includes a housing (11), which includes a front cover (111), a bottom cover (112), and an end plate (113); the lightning protection circuit (1), the main control chip circuit (2), the remote signaling detection circuit (3), the lightning strike counting circuit (4), the 485 communication circuit (5), the grounding detection circuit (6), the screen circuit (7), the alarm circuit (8), and the transformer power supply circuit (9) are fixedly installed inside the housing (11) via a PCB board.

3. The lightning protection device for power supply according to claim 2, characterized in that: The 485 communication circuit (5) is provided with a 485 communication interface (51), which is embedded in one side end plate (113) of the housing (11).

4. A power surge protection device according to claim 2, characterized in that: The screen circuit (7) is equipped with a serial port screen (71), which is embedded in the cover (111) of the housing (11).

5. A power surge protection device according to claim 2, characterized in that: The alarm circuit (8) is equipped with a working indicator light (81), a fault indicator light (82), and a mute button (83). The working indicator light (81), the fault indicator light (82), and the mute button (83) are respectively embedded in the cover (111) of the housing (11).

6. A power surge protection device according to claim 2, characterized in that: The transformer power supply circuit (9) is equipped with an overcurrent protection device (91), which is embedded in the cover (111) of the housing (11).

7. A power surge protection device according to claim 3, characterized in that: The wiring terminal (10) is embedded in one side end plate (113) of the enclosure (11) and is on the same side end plate (113) as the 485 communication interface (51).

8. The power surge protection device according to any one of claims 1 to 7, characterized in that: The lightning protection circuit (1) is configured with a nominal discharge current In≥20kA, a maximum discharge current Imax≥40kA, and a voltage protection level Up<1.0kV by adopting specific lightning protection components or technical means.

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