CN210468385U - Alternating current distribution device with isolated lightning protection - Google Patents
Alternating current distribution device with isolated lightning protection Download PDFInfo
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- CN210468385U CN210468385U CN201921795958.9U CN201921795958U CN210468385U CN 210468385 U CN210468385 U CN 210468385U CN 201921795958 U CN201921795958 U CN 201921795958U CN 210468385 U CN210468385 U CN 210468385U
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Abstract
The utility model provides an alternating current distribution device with isolated lightning protection, include: the device comprises a power supply module, a power supply monitoring module, an isolation lightning protection module, an intelligent monitoring analysis module, a grouping grounding module and an electric power distribution module; the power supply module is connected with the power supply monitoring module, the intelligent monitoring analysis module, the grouping grounding module and the electric power distribution module are respectively connected with the isolation lightning protection module, the grouping grounding module comprises a working grounding unit, a protection grounding unit and a lightning protection grounding unit, and the working grounding unit, the protection grounding unit and the lightning protection grounding unit are isolated and grouped through the isolation lightning protection module. The working ground wire, the protective ground wire and the lightning protection ground wire are connected in a grouping mode, low-impedance connection is achieved under low-frequency current, high-impedance connection is achieved under high-frequency current, and the dangerous conditions that ground potential counterattack among the protective ground wire unit, the lightning protection ground wire unit and the working ground wire unit is achieved when lightning invades are avoided.
Description
Technical Field
The utility model relates to a lightning protection technical field especially relates to an alternating current distribution device with isolated lightning protection.
Background
The traditional grounding technology and lightning protection method in the alternating current distribution box both utilize the energy of lightning current to ensure that an SPD (surge protector) is in instant short circuit, and the lightning current is released to the ground through a grounding wire, and the mode needs a grounding device with small grounding resistance. However, the grounding device with a small grounding resistance is very difficult to realize in high-mountain areas with high grounding soil resistivity, and not only a large-area grounding network needs to be built and a large amount of steel and resistance reducing agent are used, but also the problems that the grounding network construction and the local management department are difficult to coordinate are faced.
In addition, in the conventional grounding technology and lightning protection method of the alternating current distribution box, a Surge Protector (SPD) in a circuit is connected with electronic equipment in parallel, and due to the fact that grounding resistance exists in an SPD branch circuit, the SPD branch circuit cannot completely discharge all lightning current, and a part of the lightning current inevitably invades the electronic equipment to influence the electronic equipment.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide an ac power distribution apparatus with isolated lightning protection that overcomes or at least partially solves the above problems.
In order to solve the problem, the utility model discloses an alternating current power distribution device with isolated lightning protection, a serial communication port, include: the device comprises a power supply module, a power supply monitoring module, an isolation lightning protection module, an intelligent monitoring analysis module, a grouping grounding module and an electric power distribution module; the power module is connected power supply monitoring module, power supply monitoring module intelligent monitoring analysis module group ground module with electric power distribution module connects respectively keep apart the lightning protection module, group ground module includes work ground connection unit, protection ground connection unit and lightning protection ground connection unit, work ground connection unit protection ground connection unit with the lightning protection ground connection unit passes through keep apart the lightning protection module and keep apart the group.
Furthermore, the isolation lightning protection module comprises a first discharge unit, an isolation suppressor and a second discharge unit which are sequentially connected, the first discharge unit is connected with the power supply monitoring module, the second discharge unit is connected with the power distribution module, and the work grounding unit, the protection grounding unit and the lightning protection grounding unit are isolated and grouped through the isolation suppressor.
Further, the power supply module is set as a module for automatically switching the commercial power supply unit and the external power supply unit.
Furthermore, the mains supply unit and the external power supply unit adopt an interlocking connection mode.
Further, the power module further comprises a fire signal unit for outputting a fire signal.
Furthermore, the intelligent monitoring and analyzing module is used for realizing the working state monitoring and data transmission of the first bleeding unit and the second bleeding unit.
Furthermore, the intelligent monitoring and analyzing module comprises a grounding state monitoring unit, an SPD state monitoring unit and a lightning monitoring unit.
Further, the power distribution module is arranged as a multi-path power distribution module.
Furthermore, the lightning protection grounding unit is connected with a common grounding grid, the protection grounding unit is connected with a shell of the alternating current power distribution device, and the working grounding unit is connected with a direct current power supply.
The utility model discloses a following advantage: the working ground wire, the protection ground wire and the lightning protection ground wire are connected in a grouping mode, low-impedance connection is achieved under low-frequency current, high-impedance connection is achieved under high-frequency current, the ground wire of the isolation lightning protection module is connected into the lightning protection ground wire unit, and therefore the dangerous conditions such as ground potential counterattack among the protection ground wire unit, the lightning protection ground wire unit and the working ground wire unit are prevented when lightning invades.
Drawings
Fig. 1 is a block diagram of an ac power distribution apparatus with isolated lightning protection according to the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model discloses an one of the core design lies in, provides an alternating current distribution device with isolated lightning protection, include: the device comprises a power supply module, a power supply monitoring module, an isolation lightning protection module, an intelligent monitoring analysis module, a grouping grounding module and an electric power distribution module; the power supply module is connected with the power supply monitoring module, the intelligent monitoring analysis module, the grouping grounding module and the electric power distribution module are respectively connected with the isolation lightning protection module, the grouping grounding module comprises a working grounding unit, a protection grounding unit and a lightning protection grounding unit, and the working grounding unit, the protection grounding unit and the lightning protection grounding unit are isolated and grouped through the isolation lightning protection module. The working ground wire, the protective ground wire and the lightning protection ground wire are connected in a grouping mode, low-impedance connection is achieved under low-frequency current, high-impedance connection is achieved under high-frequency current, and the dangerous conditions that ground potential counterattack among the protective ground wire unit, the lightning protection ground wire unit and the working ground wire unit is achieved when lightning invades are avoided.
Referring to fig. 1, a block diagram of an ac power distribution device with isolated lightning protection according to the present invention is shown, which may specifically include: the device comprises a power supply module, a power supply monitoring module, an isolation lightning protection module, an intelligent monitoring analysis module, a grouping grounding module and an electric power distribution module; the power supply module is connected with the power supply monitoring module, the intelligent monitoring analysis module, the grouping grounding module and the electric power distribution module are respectively connected with the isolation lightning protection module, the grouping grounding module comprises a working grounding unit, a protection grounding unit and a lightning protection grounding unit, and the working grounding unit, the protection grounding unit and the lightning protection grounding unit are isolated and grouped through the isolation lightning protection module. In this embodiment, when the lightning current is transmitted from the power transmission line to the isolation protection module, the isolation protection module can effectively prevent the lightning current from entering the subsequent device, and the isolation protection module conducts and discharges the lightning current at a very high speed, and discharges the remaining lightning current to the ground, so as to ensure that the lightning current flowing to the load device reaches a very small value and cannot damage the device. The grouping grounding module adopts an isolation type grouping grounding technology, the working grounding unit, the protection grounding unit and the lightning grounding unit are isolated through the isolation lightning protection module and grouped according to functions of the isolation lightning protection module, mutual independent and complementary influences of the grounding units are achieved, and influences on the working grounding unit and the protection grounding unit when lightning current is discharged into the ground are reduced. By adopting the isolated lightning protection technology, the lightning protection effect is improved, the lightning stroke accidents are reduced or avoided, and the grounding resistance is relaxed to meet the requirements.
In this embodiment, keep apart the lightning protection module including the first bleeder unit, isolation inhibitor and the second bleeder unit that connect gradually, first bleeder unit is connected with power supply monitoring module, and the second bleeder unit is connected with electric power distribution module, and work ground connection unit, protection ground connection unit and lightning protection ground connection unit keep apart through keeping apart the inhibitor and divide the group. In this embodiment, the isolation suppressor employs an innovative lightning current isolation blocking technology, and blocks a passage through which lightning current enters a system, so that the lightning protection performance of the ac power distribution device is greatly improved, and the ac power distribution device is protected to the greatest extent. The isolation suppressor adopts an isolation type grouping grounding technology to isolate the working grounding unit, the protection grounding unit and the lightning protection grounding unit and group the working grounding unit, the protection grounding unit and the lightning protection grounding unit according to functions of the working grounding unit, the protection grounding unit and the lightning protection grounding unit, and the grounding units in the grouping grounding module are independent from each other and do not influence each other. The influence on the working grounding unit and the protective grounding unit when the lightning current is discharged into the ground is reduced, so that the alternating current power distribution device is protected, and the requirement of the lightning protection device on the grounding resistance value is also reduced.
In a specific embodiment, the first discharge unit realizes the discharge of main energy and the clamping of voltage during the surge invasion, the isolation suppressor realizes the isolation suppression unit in the high-frequency surge invasion, the high impedance state is realized, the current is discharged through the first discharging unit as much as possible, the lightning current component part which is in surge in the second discharging unit is reduced as much as possible, the second discharging unit realizes the discharge of the lightning surge energy of the residual part of the first discharging unit, the surge invasion energy at the power end of the equipment is further reduced, the multi-stage protection is realized, after the first bleeding unit has bled the main lightning surge energy, a residual part of the energy is bled by the second bleeding unit, therefore, high voltage generated by lightning surge at the power supply end of the equipment is maintained at a lower level, and the voltage before the power supply end (L1, L2, L3, N, PE) of the equipment is effectively maintained at a normal level.
In this embodiment, the power module is configured as a module for automatically switching between the commercial power supply unit and the external power supply unit. The mode that dual supply automatic switch is adopted to this embodiment, and commercial power supply unit and external power supply unit adopt the connected mode of interlocking, realize commercial power supply and external power supply's automatic switch, and above-mentioned external power supply includes oil machine and or outside generator, and the form of above-mentioned external power supply is not injectd in this application.
In this embodiment, the power module further includes a fire signal unit for outputting a fire signal. The power module in this application is from taking fire control signal output, and above-mentioned output is judged according to the switching value, and above-mentioned fire control signal unit can be connected according to the demand.
In this embodiment, the intelligent monitoring and analyzing module is used to implement the working state monitoring and data transmission of the first bleeding unit and the second bleeding unit. The intelligent monitoring and analyzing module in this embodiment is used for realizing the operating condition monitoring of first bleeder unit and second bleeder unit, for example the monitoring of the remote signalling of bleeder unit, leakage current, operating voltage, operating temperature and surge invasion data etc. to carry out real-time analysis, and with data upload to the high in the clouds statistics and show.
In this embodiment, the intelligent monitoring and analyzing module includes a ground state monitoring unit, an SPD state monitoring unit, and a lightning monitoring unit.
In this embodiment, the power distribution module is configured as a multi-channel power distribution module. The electric power distribution adopts the distribution of multichannel power, wiring and installation when conveniently using.
In this embodiment, the lightning protection grounding unit is connected to a common grounding grid, the protection grounding unit is connected to a housing of the ac power distribution apparatus, and the working grounding unit is connected to the dc power supply. The grouping access of the working ground wire unit, the protective ground wire unit and the lightning protection ground wire unit is realized, the low-impedance connection is realized under low-frequency current, the high-impedance connection is realized under high-frequency current, and the ground wire of the discharge unit is connected with the lightning protection ground wire unit, so that the occurrence of dangerous conditions such as ground potential counterattack among the protective ground wire unit, the lightning protection ground wire unit and the working ground wire unit is prevented when thunder invades.
In a specific embodiment, during the invasion of the surge, the lightning surge line is discharged through the first discharging unit, the power isolation suppressor is decoupled, high impedance is presented, and the main lightning surge reaches the lightning protection ground wire unit through the first discharging unit. High impedance is realized between the lightning protection ground wire unit and the working ground wire unit and between the lightning protection ground wire unit and the working ground wire unit due to the action of the group grounding module, and lightning surge energy mainly flows into the ground through the lightning protection ground wire unit, so that the effect of preventing ground potential counterattack is realized. And the residual less lightning surge energy can be discharged by the second discharging unit and flows into the lightning protection ground wire unit, so that the residual less lightning surge energy reaches the ground, and the power protection of the power output end is realized. The intelligent monitoring analysis module monitors the working state of the discharging unit and records the information of lightning invasion of the discharging unit, and the high-impedance state of the isolation suppressor and the grouped grounding module is kept when the lightning surge invades, so that a conduction loop of lightning surge energy is restrained, and the power end of equipment is protected, therefore, the grounding resistance can be relaxed to the whole grounding environment, and the requirement is met.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The ac power distribution device with isolated lightning protection provided by the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (9)
1. An ac power distribution unit with isolated lightning protection, comprising: the device comprises a power supply module, a power supply monitoring module, an isolation lightning protection module, an intelligent monitoring analysis module, a grouping grounding module and an electric power distribution module; the power module is connected power supply monitoring module, power supply monitoring module intelligent monitoring analysis module group ground module with electric power distribution module connects respectively keep apart the lightning protection module, group ground module includes work ground connection unit, protection ground connection unit and lightning protection ground connection unit, work ground connection unit protection ground connection unit with the lightning protection ground connection unit passes through keep apart the lightning protection module and keep apart the group.
2. The ac power distribution device with isolated lightning protection according to claim 1, wherein the isolated lightning protection module comprises a first bleeding unit, an isolation suppressor, and a second bleeding unit connected in sequence, the first bleeding unit is connected to the power supply monitoring module, the second bleeding unit is connected to the power distribution module, and the working ground unit, the protection ground unit, and the lightning protection ground unit are isolated and grouped by the isolation suppressor.
3. The ac power distribution unit with isolated lightning protection according to claim 1, wherein the power module is configured as a module for automatically switching between a mains power supply unit and an external power supply unit.
4. The AC power distribution unit with isolated lightning protection according to claim 3, wherein said mains power supply unit and said external power supply unit are connected in an interlocking manner.
5. The isolated lightning protected ac power distribution apparatus of claim 1, wherein the power module further comprises a fire signal unit for outputting a fire signal.
6. The ac power distribution apparatus with isolated lightning protection according to claim 1, wherein the intelligent monitoring and analyzing module is configured to implement monitoring of the operating status and data transmission of the first and second bleeding units.
7. The alternating current power distribution device with isolated lightning protection according to claim 6, wherein the intelligent monitoring and analyzing module comprises a ground state monitoring unit, an SPD state monitoring unit and a lightning monitoring unit.
8. The isolated lightning protected ac power distribution unit of claim 1, wherein the power distribution module is configured as a multiple power distribution module.
9. The ac power distribution unit with isolated lightning protection according to claim 1, wherein the lightning protection grounding unit is connected to a common grounding grid, the protection grounding unit is connected to a housing of the ac power distribution unit, and the working grounding unit is connected to a dc power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921795958.9U CN210468385U (en) | 2019-10-22 | 2019-10-22 | Alternating current distribution device with isolated lightning protection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921795958.9U CN210468385U (en) | 2019-10-22 | 2019-10-22 | Alternating current distribution device with isolated lightning protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718901A (en) * | 2019-10-22 | 2020-01-21 | 深圳远征技术有限公司 | Alternating current distribution device with isolated lightning protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718901A (en) * | 2019-10-22 | 2020-01-21 | 深圳远征技术有限公司 | Alternating current distribution device with isolated lightning protection |
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