Isolation type grouping grounding thunder and lightning discharge system
By using an isolated group grounding lightning discharge system, which incorporates components such as isolation suppressors and surge protectors, the problem of ground potential backflash caused by lightning current is solved, thus achieving safe protection of equipment and stable operation of the system. It is suitable for mobile communication equipment rooms under different geological conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-09
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, when lightning current flows into the ground through the grounding device, it causes the ground potential to rise, triggering ground potential backflash, which can damage equipment and pose safety hazards. In particular, it is difficult to achieve low grounding resistance values in areas with high soil resistivity or complex geology, leading to equipment damage and communication interruptions.
An isolated group grounding lightning discharge system is adopted, which includes working ground busbar, protective ground busbar and lightning protection ground busbar connected by isolation suppressors. Combined with surge protectors and load circuit breakers, it realizes electrical isolation between equipment and ground potential, and provides comprehensive lightning protection at the power supply end.
It effectively prevents ground potential backflash, protects equipment from lightning overvoltage damage, reduces the risk of equipment damage, improves system adaptability and flexibility, enhances stability and reliability, and reduces the risk of downtime caused by lightning.
Smart Images
Figure CN224083193U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lightning protection technology, and specifically relates to an isolated group grounding lightning discharge system. Background Technology
[0002] Lightning strikes are extremely destructive to electronic equipment in mobile communication equipment rooms. When lightning directly strikes a base station tower or equipment room, the powerful lightning current flows into the ground through the tower and grounding system, causing a sharp rise in ground potential. This rise in ground potential creates a significant potential difference between the equipment's grounding wires and signal lines, triggering a ground potential backflash. Furthermore, the electromagnetic induction from lightning induces high voltages and strong currents in communication lines, power lines, and signal lines, directly breaking down the insulation layers of the equipment, leading to short circuits or damage. The electronic equipment in mobile communication base stations is typically highly integrated and has low voltage withstand levels, making it vulnerable to interference from lightning strikes. A lightning strike can not only damage the equipment but also cause communication signal interruptions and even fires.
[0003] Despite continuous advancements in lightning protection technology, several shortcomings remain in practical applications. When lightning current flows into the earth through the grounding down conductor and grounding grid, the impedance of the grounding device causes a significant, instantaneous rise in ground potential. This phenomenon, known as ground potential backflash, is a secondary effect of lightning. The increased ground potential generated by the lightning current flowing through the down conductor and grounding grid can be conducted to the equipment's grounding busbar through the equipment's grounding wire, potentially causing a ground potential voltage drop of tens of thousands of volts to ground. This can not only damage equipment but also trigger discharge breakdown, leading to serious equipment failures and even endangering personal safety. Ground potential backflash caused by improper grounding techniques can potentially destroy all equipment in the entire network system.
[0004] In view of this, an isolated group grounding lightning discharge system is proposed to comprehensively and effectively protect against lightning disasters and safeguard equipment and personnel. Utility Model Content
[0005] The purpose of this invention is to provide an isolated group-grounded lightning discharge system, thereby overcoming the defect of damage to electrical equipment caused by ground potential backflash during strong lightning currents. The specific technical solution is as follows:
[0006] An isolated group-grounded lightning discharge system includes:
[0007] The computer room circuit unit includes a switching power supply, lines, and several devices. The several devices are electrically connected to the switching power supply through lines, and the switching power supply is electrically connected to the mains power through lines.
[0008] The lightning protection unit includes a surge protector and a load circuit breaker, both of which are installed on the line between the switching power supply and the mains power.
[0009] An isolated group grounding unit is connected to the computer room circuit unit. The isolated group grounding unit includes a working ground bus, a protective ground bus, an isolation suppressor, and a lightning protection ground bus. The working ground bus and the protective ground bus are both connected to the lightning protection ground bus through the isolation suppressor. The lightning protection ground bus is grounded.
[0010] Preferably, the load circuit breaker is connected to the mains power supply and is located between the mains power supply and the switching power supply; the surge protector is connected to the load circuit breaker and the switching power supply and is located between the load circuit breaker and the switching power supply; and the surge protector is also connected to the lightning protection grounding busbar.
[0011] Preferably, the line connecting the switching power supply and the plurality of devices is provided with an equal current grounding point, which is connected to the working ground bar through the equal current grounding point.
[0012] Preferably, the device includes a main communication device, which is connected to the switching power supply via a line, and the main communication device is connected to an optical cable, which is connected to the lightning protection grounding bar.
[0013] Preferably, the switching power supply includes a housing and a switching power supply circuit, the switching power supply circuit being disposed within the housing, and the housing being connected to a protective ground busbar.
[0014] Preferably, the device includes a device housing and a device circuit. The device circuit is an integral combination of all circuits and modules required to complete the device function. The device circuit is located inside the device housing, and the device housing is connected to the protective grounding bar.
[0015] Preferably, it also includes a computer room body, wherein the computer room circuit unit, lightning protection unit and isolated group grounding unit are all located inside the computer room body, and an outdoor grounding lead is provided outside the computer room body. The outdoor grounding lead is connected to the wiring inside the computer room body, and the other end of the outdoor grounding lead that is not connected to the wiring inside the computer room is grounded.
[0016] Preferably, the surge protector is a Class B surge protector.
[0017] Preferably, it also includes a lightning monitoring unit, a transmission unit, and a monitoring terminal. The lightning monitoring unit is connected to the monitoring terminal through the transmission unit. The lightning monitoring unit adopts an intelligent SPD monitoring module to monitor the number of lightning strikes, intensity, and SPD status. The intelligent SPD monitoring module is connected to the switching power supply stage surge protector.
[0018] Preferably, the intelligent SPD monitoring module adopts the ZVT-AP series intelligent SPD monitoring module, specifically including ZVT-AP-B, ZVT-AP-C and ZVT-AP-D. The transmission unit transmits the intelligent SPD monitoring module to the monitoring terminal via wireless communication and displays it visually on the monitor.
[0019] Compared with existing technologies, this utility model has the following beneficial effects:
[0020] 1. This utility model achieves electrical isolation between the working ground busbar, protective ground busbar, and lightning protection ground busbar by introducing an isolation suppressor. The core advantage of this design is its ability to effectively prevent ground potential backflash, thereby protecting sensitive equipment in the computer room from damage caused by lightning overvoltage. In traditional grounding systems, when lightning current flows into the earth through the grounding device, it causes a momentary rise in ground potential, which is then conducted through the grounding wire to the grounding busbar of the equipment, forming a ground voltage as high as several thousand volts or even tens of thousands of volts. This high voltage can not only damage equipment but may also cause discharge breakdown, endangering personal safety. The introduction of the isolation suppressor effectively isolates the lightning current when it enters the grounding grid, preventing the ground potential rise caused by the lightning current from being conducted to the working ground and protective ground, thus fundamentally eliminating the risk of ground potential backflash. This design is particularly suitable for electronic equipment and communication systems sensitive to ground potential backflash, and can significantly improve the reliability and safety of the system.
[0021] 2. The design concept of this utility model breaks through the strict limitations on grounding resistance values in traditional grounding systems. In traditional lightning protection grounding designs, the grounding resistance value is usually required to be around 4Ω, or even less than 1Ω, to ensure that lightning current can be quickly discharged into the ground, thereby reducing the risk of ground potential rise. However, in practical applications, especially in areas with high soil resistivity or complex geological conditions, achieving low grounding resistance values often faces problems such as high technical difficulty and high cost. This utility model, through the use of an isolation suppressor, makes the grounding resistance value no longer a key limiting factor in lightning protection design. Even if the grounding resistance value is high, the isolation suppressor can effectively prevent lightning current from being conducted to the equipment through the grounding system, thereby avoiding ground potential backflash. This design not only reduces the construction cost of the lightning protection grounding system, but also improves the system's adaptability and flexibility, enabling it to better adapt to application scenarios under different geological conditions. In addition, not limiting the grounding resistance value reduces the lightning protection safety hazards caused by changes in grounding resistance value (such as increased resistance due to soil drying or corrosion), further enhancing the stability and reliability of the system.
[0022] 3. At the power supply end, this invention provides comprehensive lightning protection for the computer room circuit unit by incorporating a surge protection device (SPD) and a load circuit breaker. The surge protection device, installed on the line between the switching power supply and the mains power, can respond rapidly when lightning overvoltage occurs, limiting the overvoltage to a safe range that the equipment can withstand, thereby protecting the switching power supply and downstream equipment from lightning strikes. Simultaneously, the load circuit breaker further enhances system safety. When lightning current causes line overload or short circuit, the load circuit breaker can promptly disconnect the power supply, preventing the fault from escalating. This dual protection mechanism not only effectively reduces the direct damage of lightning to the power system but also avoids secondary disasters caused by power failures, such as fires or equipment damage. Furthermore, by integrating the surge protection device and load circuit breaker at the power supply end, the system achieves centralized protection for the entire computer room circuit unit, reducing the probability of equipment damage caused by lightning overvoltage and improving the overall protection capability of the system. This design is particularly suitable for computer room environments with high power quality requirements, effectively ensuring the stable operation of equipment within the computer room, reducing the risk of downtime caused by lightning, and improving system availability and reliability. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.
[0024] Figure 1 This is a schematic diagram of the overall framework of this utility model.
[0025] Figure 2 This is a schematic diagram of the actual connection of the computer room according to this utility model. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.
[0030] The following is combined with Figures 1-2 The embodiments of this utility model will be further described below.
[0031] In one embodiment of this utility model, an isolated group grounding lightning discharge system is provided, comprising a computer room circuit unit, a lightning protection unit, and an isolated group grounding unit, wherein:
[0032] The computer room circuit unit includes a switching power supply, wiring, and several devices. These devices are electrically connected to the switching power supply via wiring, and the switching power supply is electrically connected to the mains power supply via wiring. The lightning protection unit includes surge protectors and load circuit breakers, both installed on the line between the switching power supply and the mains power supply. An isolated group grounding unit is connected to the computer room circuit unit. This isolated group grounding unit includes a working ground busbar, a protective ground busbar, an isolation suppressor, and a lightning protection ground busbar. The working ground busbar and the protective ground busbar are both connected to the lightning protection ground busbar via the isolation suppressor. The lightning protection ground busbar is grounded. The surge protectors are Class B surge protectors.
[0033] In addition, the load circuit breaker is connected to the mains power and is located between the mains power and the switching power supply. The surge protector is connected to the load circuit breaker and the switching power supply and is located between the load circuit breaker and the switching power supply. The surge protector is also connected to the lightning protection grounding busbar.
[0034] The circuit connecting the switching power supply and the various devices is equipped with an equipotential grounding point, which is connected to the working ground busbar. Each device includes a main communication device connected to the switching power supply via a circuit, and the main communication device is connected to an optical fiber cable, which is connected to the lightning protection ground busbar.
[0035] The switching power supply includes a housing and a switching power supply circuit, the switching power supply circuit being disposed within the housing, and the housing being connected to a protective ground busbar. The device includes a device housing and a device circuit, the device circuit being an integrated unit comprising all circuits and modules required to perform the device's functions, the device circuit being disposed inside the device housing, and the device housing being connected to the protective ground busbar.
[0036] In addition, the computer room circuit unit, lightning protection unit, and isolated group grounding unit are all located inside the computer room, and an outdoor grounding lead is provided outside the computer room. The outdoor grounding lead is connected to the wiring inside the computer room, and the other end of the outdoor grounding lead that is not connected to the wiring inside the computer room is grounded.
[0037] In one embodiment of this utility model, in addition to the above-mentioned computer room circuit unit, lightning protection unit, and isolated group grounding unit, a lightning monitoring unit, a transmission unit, and a monitoring terminal are also provided. The lightning monitoring unit is connected to the monitoring terminal through the transmission unit. The lightning monitoring unit adopts an intelligent SPD monitoring module for monitoring the number of lightning strikes, intensity, and SPD status. The intelligent SPD monitoring module is connected to the switching power supply stage surge protector. The intelligent SPD monitoring module adopts the ZVT-AP series intelligent SPD monitoring module, specifically models ZVT-AP-B, ZVT-AP-C, and ZVT-AP-D. The transmission unit transmits the intelligent SPD monitoring module to the monitoring terminal via wireless communication and displays it visually on a monitor.
[0038] In summary, this invention achieves electrical isolation between the working ground busbar, protective ground busbar, and lightning protection ground busbar by introducing an isolation suppressor. The core advantage of this design is its ability to effectively prevent ground potential rise, thereby protecting sensitive equipment in the computer room from damage caused by lightning overvoltage. Furthermore, the use of the isolation suppressor eliminates the grounding resistance value as a critical limiting factor in lightning protection design. Even with a high grounding resistance, the isolation suppressor effectively prevents lightning current from being conducted to the equipment through the grounding system, thus avoiding ground potential rise. In addition, this invention incorporates surge protection devices (SPDs) and load circuit breakers, providing comprehensive lightning protection for the computer room circuit units. In conclusion, this invention is suitable for computer room environments with high power quality requirements, effectively ensuring the stable operation of equipment within the computer room, reducing the risk of downtime caused by lightning, and improving system availability and reliability.
[0039] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. An isolated grouped grounding lightning discharge system, characterized in that, The utility model relates to a kind of lightning protection system for computer room, including: Computer room circuit unit, including switching power supply, line and several devices, the several devices are electrically connected with switching power supply by line, and the switching power supply is electrically connected with commercial power by line; Lightning protection unit, including surge protector and load circuit breaker, the surge protector and load circuit breaker are installed on the line between switching power supply and commercial power; Isolated grouping grounding unit, connected with computer room circuit unit, isolated grouping grounding unit includes working ground, protection ground, isolation suppressor and lightning protection ground, the working ground and the protection ground are connected with the lightning protection ground by the isolation suppressor, and the lightning protection ground is grounded.
2. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The load circuit breaker is connected with commercial power, and is arranged between commercial power and the switching power supply, the surge protector is connected with load circuit breaker and switching power supply, and is arranged between the load circuit breaker and the switching power supply, and the surge protector is also connected with the lightning protection ground.
3. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The line between the switching power supply and the several devices is provided with equal current grounding point, and the equal current grounding point is connected with the working ground.
4. An isolated grouped grounding lightning discharge system according to claim 3, characterized in that, The device includes communication main equipment, and the communication main equipment is connected with the switching power supply by line, and the communication main equipment is connected with optical cable, and the optical cable is connected with the lightning protection ground.
5. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The switching power supply includes shell and switching power supply circuit, and the switching power supply circuit is arranged in the shell, and the shell is connected with protection ground.
6. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The device includes device shell and device circuit, and the device circuit is the whole of all circuits and modules required for completing device function, and the device circuit is arranged in the device shell, and the device shell is connected with the protection ground.
7. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The utility model also includes computer room body, and the computer room circuit unit, lightning protection unit and isolated grouping grounding unit are arranged in the computer room body, and outdoor grounding lead-in wire is arranged outside the computer room body, the outdoor grounding lead-in wire is connected with line in the computer room body, and the other end of the outdoor grounding lead-in wire is not connected with line in the computer room.
8. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The surge protector adopts B-grade surge protector.
9. An isolated grouped grounding lightning discharge system according to claim 1, characterized in that, The utility model also includes lightning monitoring unit, transmission unit and monitoring terminal, the lightning monitoring unit is connected with the monitoring terminal by the transmission unit, the lightning monitoring unit adopts intelligent SPD monitoring module, and is used for monitoring lightning times, intensity and SPD state, and the intelligent SPD monitoring module is connected with switching power supply grade surge protector.
10. An isolated grouped grounding lightning discharge system according to claim 9, characterized in that, The intelligent SPD monitoring module adopts ZVT-AP series intelligent SPD monitoring module, and specific model includes ZVT-AP-B, ZVT-AP-C and ZVT-AP-D, and the transmission unit transmits intelligent SPD monitoring module to monitoring terminal by wireless communication mode and carries out visual display by display.