CN111799576B - Matrix type lightning protection grounding system of urban rail cloud platform machine room and access method thereof - Google Patents
Matrix type lightning protection grounding system of urban rail cloud platform machine room and access method thereof Download PDFInfo
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- CN111799576B CN111799576B CN202010696570.4A CN202010696570A CN111799576B CN 111799576 B CN111799576 B CN 111799576B CN 202010696570 A CN202010696570 A CN 202010696570A CN 111799576 B CN111799576 B CN 111799576B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
Abstract
The invention belongs to the technical field of machine room lightning protection grounding, and particularly relates to a matrix type lightning protection grounding system for an urban rail cloud platform machine room and an access method thereof.
Description
Technical Field
The invention belongs to the technical field of machine room lightning protection grounding, and particularly relates to an urban rail cloud platform machine room matrix type lightning protection grounding system and an access method thereof.
Background
The urban rail cloud platform integrates resources of all stations to form a control center cloud platform system, centralized operation and maintenance management is used, service flows and operation specifications are unified, operation and maintenance efficiency is improved, equipment maintenance difficulty is reduced, and a direction is provided for next-step development of the whole rail transit;
as shown in fig. 6, the central machine room of the urban rail cloud platform includes a safety production network, such as a signal-bearing ATS system, an automatic fare collection system, a comprehensive monitoring system, an access control system, a passenger information system, a public service telephone system, and a communication alarm system; external service networks, such as a mail bearing system, an external website, and a mobile phone APP platform service of an Internet ticket purchasing subsystem; an internal management network, such as 3 service networks of asset management integration, operation integration platform, cooperative office integration platform and the like, totaling 132 cabinets;
as shown in fig. 7, the cloud platform disaster recovery center provides resources such as computation, network, storage, and security for the secure production network, provides storage resources for the external service network, provides storage resources for the internal management network, and totals 44 cabinets;
as shown in fig. 5, the cloud platform is successfully put into use, the load-bearing cloud service is used as a center where a brain of the cloud platform exists, and the smooth, safe and stable operation of the disaster recovery center cloud affects the whole cloud platform system, a cloud platform center machine room and a disaster recovery center machine room are built in a data center mode, and the data center comprises 5 auxiliary systems of the following weak current engineering, decoration engineering, fire engineering, air conditioning engineering and electrical engineering;
as shown in fig. 3, for a data center, lightning protection grounding plays a crucial role, a TNS grounding system is required to be adopted according to the lightning protection technical specification of the electronic information system of the GB50343-2012 building, and equipment in a weak current computer room is required to be grounded to less than 1 Ω;
the traditional rail transit equipment is generally grounded at a 35KV cable interlayer position, and a PCE grounding busbar is provided on a structure-provided access structure grounding body;
as shown in fig. 4, the data room grounding generally adopts an S-type or M-type grounding scheme, and the two grounding schemes have the following problems:
the grounding defect of an S-shaped (star-shaped) machine room:
1. 16mm copper grounding cables are laid from a cabinet in the machine room to a grounding terminal box, the machine room provides a fixed number of grounding terminal boxes, and the longer the path in the cable introducing process, the worse the grounding effect of the equipment is caused to be farther from an access point;
2. the number of the laid cables is large, the cables need to be led into the cable troughs when laid below the cabinet, the cable trough purchasing cost is increased, the construction procedures are multiple, and the construction period is influenced;
3. a large amount of servers are installed in a data center cabinet, equipment heating capacity is large, in order to efficiently cool, an air conditioner adopts a lower air supply mode, an elastic plastic plate or other heat insulation materials need to be laid above ground insulating paint, under the condition that the number of cabinets is large, cables are laid into wire grooves, the wire grooves affect the ventilation effect, and equipment downtime is easily caused.
II, grounding defects of an M-shaped (grid-shaped) machine room:
and connecting the copper strip which is not smaller than 50mm and laid from the cabinet in the machine room into the grounding body and the cabinet. The copper strips are fixed above the insulators to provide the whole grounding network. When the copper strip is directly connected into the cabinet, the cabinet space is small, the copper strip is bent for multiple times, the copper strip is easily broken and is in virtual connection, the process is complex, and the construction period is seriously delayed;
in summary, the prior art has the problems of poor grounding effect and unstable grounding due to inconsistent grounding points and complex process.
Disclosure of Invention
The invention provides a matrix type lightning protection grounding system for an urban rail cloud platform machine room and an access method thereof, which are used for solving the problems that the grounding effect is worse and the grounding is unstable due to inconsistent grounding points and complex process in the prior art.
The technical problem solved by the invention is realized by adopting the following technical scheme: the utility model provides a city rail cloud platform computer lab matrix lightning protection ground system, includes the consumer of computer lab, the consumer passes through the equipotential of ground connection cable and the annular inserts matrix grounding body network.
Further, the ground cable includes two ground cables with a wire diameter of 10mm, and any one of the two ground cables is a spare fault cable.
Further, the matrix grounding body network is built by adopting a copper strip, the copper strip is preferably a 30x4mm copper strip, and the built matrix grounding body network is supported by a frame.
Furthermore, the cross position of the copper strip is fixed through a phi 10 insulator by welding, and the copper strip is fixed on the grounding cable through a galvanized bolt.
Further, the power consumption equipment comprises weak current equipment, and the weak current equipment is connected into the matrix type grounding body network through the WCE weak current busbar ring of the corresponding equipment terminal box.
Further, corresponding ground terminal boxes in the machine room and other equipment rooms are respectively connected with corresponding WCE weak current busbars connected with the matrix type grounding body network through 95mm ground cables.
Further, the resistance to ground of each electric device in the machine room is less than 0.2 omega.
Further, the grounding body network is directly connected to the lower side of the cabinet of the electric equipment.
Meanwhile, the invention also provides an access method of the matrix type lightning protection grounding system of the urban rail cloud platform machine room, which comprises the following steps:
building a matrix type grounding body network of the lightning protection grounding system through a copper strip;
fixing the copper strip cross position on the built matrix type grounding body network;
the built matrix type grounding body network is used for fixing a grounding cable led out by electric equipment in an equipotential and annular mode;
finally, the lightning protection grounding system is formed.
Further, the access method further comprises:
the copper strip crossing position of the built matrix type grounding body network is fixed through welding and an insulator;
and (4) fixing the grounding cable led out by the electric equipment on the built matrix grounding body network in an annular manner through the equipotential galvanized bolts.
The invention has the beneficial effects that:
1. according to the invention, the electric equipment is connected into the matrix type grounding body network in an equipotential and annular mode through the grounding cable, and the grounding network is formed by adopting an S-type and M-type combined mode, so that the cost is saved, the construction speed is increased, and the construction quality is ensured;
2. the scheme comprises the steps of building a matrix type grounding body network in a cloud platform center machine room and a disaster preparation center machine room, fixing a grounding cable by welding and a phi 10 insulator at a copper strip cross position, fixing the grounding cable by a galvanized bolt, ensuring the grounding integrity to be reliable by fixing the copper strip cross position above the phi 10 insulator (coating a resistance reducing agent), avoiding the influence of the structure on the grounding effect, ensuring the grounding integrity to be reliable by the copper strip with large surface contact area and uniform distribution, neglecting the influence of distance on the grounding network, ensuring the grounding resistance to be consistent below each machine cabinet, simultaneously, fixing the copper strip by the insulator, overcoming the influence of environment on the grounding, improving the grounding reliability, further ensuring the grounding integrity to be reliable, avoiding the influence of the structure on the grounding effect, ensuring the grounding resistance to be consistent below each machine cabinet by neglecting the influence of distance on the grounding network, the cabinet adopts two 10mm ground connection copper lines, inserts the copper strips top, forms annular ground, guarantees whole ground system's reliability, consequently, simplifies and has improved the stability of system.
Drawings
FIG. 1 is a schematic system structure diagram of a matrix type lightning protection grounding system of an urban rail cloud platform machine room according to the invention;
FIG. 2 is a partial enlarged view of the copper strip termination of the urban rail cloud platform computer room matrix type lightning protection grounding system of the invention;
FIG. 3 is a grounding system diagram of a grounding protection system TNS of a matrix type lightning protection grounding system of an urban rail cloud platform machine room according to the invention;
FIG. 4 is a diagram of a conventional data center grounding network of a matrix type lightning protection grounding system of an urban rail cloud platform machine room according to the present invention;
FIG. 5 is a data center system diagram of a matrix type lightning protection grounding system of an urban rail cloud platform machine room according to the invention;
fig. 6 is a cloud platform central office layout according to a second embodiment of the present invention;
fig. 7 is a disaster preparation center cloud platform machine room arrangement diagram according to a third embodiment of the present invention;
FIG. 8 is a diagram of a second embodiment of the installation of a center grounded copper strip for a cloud platform;
FIG. 9 is a diagram of the installation of a disaster recovery center grounded copper strip according to a third embodiment of the present invention;
FIG. 10 is an access flow chart of an access method of the matrix type lightning protection grounding system of the urban rail cloud platform machine room of the invention;
FIG. 11 is a rail transit grounding system diagram of a matrix type lightning protection grounding system of an urban rail cloud platform machine room according to the invention;
FIG. 12 is a production center cloud platform architecture diagram of the urban rail cloud platform computer room matrix lightning protection grounding system of the present invention;
fig. 13 is a disaster preparation center cloud platform architecture diagram of the urban rail cloud platform machine room matrix lightning protection grounding system of the invention.
In fig. 1:
101-consumer, 102-ground cable, 103-ground body network;
in fig. 2:
201-copper strip, 202-insulator, 203-galvanized bolt;
in fig. 10:
s101, building a matrix type grounding body network of the lightning protection grounding system through a copper strip;
s102, fixing the copper strip cross position on the built matrix type grounding body network;
s103, leading out a grounding cable which has equal potential and is led out from the built matrix grounding body network and is used for fixing electric equipment in an annular mode;
s104, finally forming the lightning protection grounding system;
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
the first embodiment: as shown in fig. 1, an urban rail cloud platform computer lab matrix lightning protection grounding system includes a power consumption device 101 of a computer lab, where the power consumption device 101 is equipotentially and annularly connected to a matrix grounding body network 103 through a grounding cable 102.
Because the electric equipment is equipotentially and annularly connected into the matrix type grounding body network through the grounding cable, the grounding network is formed by grounding in a mode of combining S type and M type, the grounding network saves cost, improves construction speed and ensures construction quality, the scheme comprises the steps of installing 30X4mm copper strips in each cabinet and reserved cabinet center in a grid mode in a cloud platform center machine room and a disaster preparation center machine room, building the grounding network of the whole machine room, then connecting the 30X4mm copper strips into a grounding terminal box position, fixing the position above a phi 10 insulator at the crossed position of the copper strips and coating resistance reducing agents, thereby ensuring the integral reliability of grounding, avoiding the influence of the structure on the grounding effect, ensuring the larger surface contact area and the uniform distribution of the copper strips, neglecting the influence of distance on the grounding network and ensuring the consistent grounding resistance value below each cabinet, the cabinet adopts two 10mm ground connection copper lines, inserts the copper strips top, forms annular ground connection and guarantees whole ground system's reliability, consequently, simplifies and has improved the stability of system.
The ground cable 102 includes two ground cables 102 with a wire diameter of 10mm, and any one of the two ground cables 102 is a fault reserve cable.
Due to the fact that the grounding cable comprises two grounding cables with the wire diameter of 10mm, any one of the two grounding cables is a fault standby cable, the grounding stability is improved due to the fact that the grounding cable is thick, and meanwhile when one side is grounded and has a fault, the other side is grounded and normally operates.
The matrix grounding body network 103 is built by adopting a copper strip 201, the copper strip 201 is preferably a 30x4mm copper strip 201, and the built matrix grounding body network 103 is supported by a frame.
Owing to adopt matrix grounding body network adopts the copper strips to build, the copper strips is preferably 30x4mm copper strips, it passes through the frame to build matrix grounding body network and supports, owing to support through the frame, has improved grounding body network's work and mechanical strength, builds through the copper strips simultaneously, and the copper strips is preferably 30x4mm copper strips, the grounding network that 30x4 mm's copper strips was built has improved the reliability of ground connection, reduces the construction degree of difficulty, has overcome the geosyncline and has influenced the air conditioner air supply.
As shown in fig. 2, the crossing position of the copper tape 201 is fixed by welding and through a phi 10 insulator 202, and the copper tape 201 fixes the grounding cable 102 through a galvanized bolt 203.
The copper strip cross position is fixed through welding and a phi 10 insulator, the copper strip is fixed on a grounding cable through a galvanized bolt, the copper strip is fixed above the phi 10 insulator (coated with a resistance reducing agent) at the copper strip cross position to ensure the grounding to be overall reliable, the influence of the structure on the grounding effect is avoided, the copper strip has large surface contact area and uniform distribution, the influence of the distance on a grounding network is ignored, the grounding resistance value below each cabinet is ensured to be consistent, meanwhile, the copper strip is fixed on the insulator, the influence of the environment on the grounding is overcome, and the grounding reliability is improved.
Meanwhile, installing 30x4mm copper strips on the centers of each cabinet and the reserved cabinets in a grid mode, building a grounding network of the whole machine room, connecting the 30x4mm copper strips to the position of a grounding terminal box, fixing the copper strips above a phi 10 insulator at the crossing position of the copper strips and coating a resistance reducing agent;
as shown in fig. 11, the power utilization devices include weak current devices, and the weak current devices are annularly connected to the matrix type grounding body network through the WCE weak current busbars of the corresponding device terminal boxes;
owing to adopt power consumption equipment includes weak current equipment, the female annular of arranging of WCE weak current that weak current equipment passes through corresponding equipment terminal case inserts matrix grounding body network, and geomantic omen electric equipment, escalator, chase in the station provide the female row of PSCE ground connection, and WCE (weak current is female to be arranged) is annular ground connection terminal case is carried for equipment room, has simplified system architecture, the systemic connection of being convenient for.
And the machine room and corresponding grounding terminal boxes in other equipment rooms are respectively connected with corresponding WCE weak current busbars connected with a matrix grounding body network through 95mm grounding cables.
Due to the fact that the WCE weak current busbar between the adjacent machine rooms is connected through the 95mm grounding cable, the grounding terminal box in the cloud platform machine room and the annular access structure body in the other equipment rooms are connected to the WCE weak current grounding busbar, the structure is simplified and connection is facilitated through the combination of the grounding terminal box and the WCE weak current grounding busbar, and the grounding strength and stability of the machine rooms are improved through the 95mm grounding cable.
And the resistance of each electric device 101 of the machine room to the ground is less than 0.2 omega.
Because the resistance to ground of each electric device adopting the machine room is smaller than 0.2 omega, and the resistance value of each electric device is basically consistent with that of the grounding terminal box, 2 grounding cables with 10mm are adopted in the machine cabinet to be connected into the copper strip single machine cabinet to be grounded in an annular mode, the grounding reliability is improved, meanwhile, according to the lightning grounding standard requirement, the grounding resistance value of the machine room is smaller than 1 omega, and the test resistance after actual completion is smaller than 0.2 omega.
The grounding body network 103 is directly connected to the lower part of the cabinet of the electric equipment 101.
Because the grounding body network is directly connected to the lower part of the cabinet of the electric equipment, the grounding copper strip is arranged below the cabinet, and the grounding of the cabinet base is facilitated.
As shown in fig. 10, the present invention further provides an access method for a matrix lightning protection grounding system in an urban rail cloud platform machine room, including:
s101: the matrix type grounding body network 103 of the lightning protection grounding system is built through a copper strip 201;
s102: fixing the crossing position of the copper strip 201 on the built matrix type grounding body network 103;
s103: the grounding cable 102 is led out of the annular fixed electric equipment 101 with equal potential on the matrix grounding body network 103 after being built;
s104: finally, the lightning protection grounding system is formed.
The access method further comprises the following steps:
the crossing position of the copper strips 201 of the built matrix type grounding body network 103 is fixed through welding and an insulator 202;
the built matrix type grounding body network 103 is equipotential and is used for fixing the grounding cable 102 led out of the electric equipment 101 in an annular mode through a galvanized bolt 203;
and connecting the built matrix type grounding body network 103 to a grounding terminal box 104.
The built matrix type grounding body network is connected to the grounding terminal box through the grounding copper wire, and the built matrix type grounding body network is connected to the grounding terminal box through the grounding copper wire.
The invention also provides an access method of the matrix type lightning protection grounding system of the urban rail cloud platform machine room, which comprises the steps of constructing the matrix type grounding body network of the lightning protection grounding system through a copper belt; fixing the copper strip cross position on the built matrix type grounding body network; the built matrix type grounding body network is used for fixing a grounding cable led out by electric equipment in an equipotential and annular mode; finally, the lightning protection grounding system is formed, and meanwhile, the copper strip crossing position of the built matrix grounding body network is fixed through welding and an insulator; the grounding cable that draws forth through zinc-plated bolt equipotential and the fixed consumer of annular on the matrix grounding body network that will build the completion is owing to adopt 30x4mm copper strips to build whole grounding body, connects in the computer lab equipotential grounding terminal incasement, adopts the welding machine mode to guarantee that the ground connection is whole reliable in copper strips cross position, and the copper strips is fixed and is avoided the structure to the effect influence of earthing above the insulator. The rack adopts 2 10mm ground connection copper lines, inserts the copper strips top, forms annular ground connection and guarantees whole ground system's reliability.
The reliable grounding of the invention overcomes the influence of human body static electricity, sudden power cut and transmission and external lightning on the equipment, and ensures the high quality and safe use of the brain of the cloud platform system.
Second embodiment:
urban rail cloud platform center computer lab lightning grounding system:
as shown in fig. 1, 6 and 8, a matrix type lightning protection grounding system for an urban rail cloud platform machine room comprises electric equipment 101 of the machine room;
as shown in fig. 12, the electric device 101 includes:
the system comprises a safety production network system, a monitoring system and a communication warning system, wherein the safety production network system comprises a bearing signal ATS system, an automatic ticket selling and checking system, a comprehensive monitoring system, an access control system, a passenger information system, a service telephone system and a communication warning system;
the system comprises an external service network, a service management system and a service management system, wherein the external service network comprises a mail bearing system, an external website and an Internet ticket purchasing subsystem mobile phone APP platform service;
the system comprises an internal management network system, a data processing system and a data processing system, wherein the internal management network system comprises an asset management integration platform, an operation integration platform and a collaborative office integration platform;
the electric equipment 101 is connected to a matrix type grounding body network 103 in an equipotential and annular mode through a grounding cable 102.
The ground cable 102 includes two ground cables 102 with a wire diameter of 10mm, and any one of the two ground cables 102 is a fault reserve cable.
The matrix grounding body network 103 is built by adopting a copper strip 201, the copper strip 201 is preferably a 30x4mm copper strip 201, and the built matrix grounding body network 103 is supported by a frame.
As shown in fig. 2, the crossing position of the copper tape 201 is fixed by welding and through a phi 10 insulator 202, and the copper tape 201 fixes the grounding cable 102 through a galvanized bolt 203.
The consumer 101 includes wind water and electricity equipment, light current equipment, wind water and electricity equipment is female the arranging annular of PCE ground connection through corresponding equipment terminal case and is inserted, light current equipment is female the arranging annular of the row of WCE light current through corresponding equipment terminal case and is inserted matrix ground connection body network.
The machine room and corresponding grounding terminal boxes in other equipment rooms are respectively connected with 102 corresponding WCE weak current busbars connected with a matrix grounding body network through 95mm grounding cables;
and the resistance of each electric device 101 of the machine room to the ground is less than 0.2 omega.
The grounding body network 103 is directly connected to the lower part of the cabinet of the electric equipment 101.
As shown in fig. 10, the present invention further provides an access method for a matrix lightning protection grounding system in an urban rail cloud platform machine room, including:
s101: the matrix type grounding body network 103 of the lightning protection grounding system is built through a copper strip 201;
s102: fixing the crossing position of the copper strip 201 on the built matrix type grounding body network 103;
s103: the grounding cable 102 is led out of the annular fixed electric equipment 101 with equal potential on the matrix grounding body network 103 after being built;
s104: finally, the lightning protection grounding system is formed.
The lightning protection grounding system comprises electric equipment 101;
the electric device 101 includes:
the system comprises a safety production network system, a monitoring system and a communication warning system, wherein the safety production network system comprises a bearing signal ATS system, an automatic ticket selling and checking system, a comprehensive monitoring system, an access control system, a passenger information system, a service telephone system and a communication warning system;
the system comprises an external service network, a service management system and a service management system, wherein the external service network comprises a mail bearing system, an external website and an Internet ticket purchasing subsystem mobile phone APP platform service;
the system comprises an internal management network system, a data processing system and a data processing system, wherein the internal management network system comprises an asset management integration platform, an operation integration platform and a collaborative office integration platform;
the access method further comprises the following steps:
the crossing position of the copper strips 201 of the built matrix type grounding body network 103 is fixed through welding and an insulator 202;
and (3) fixing the grounding cable 102 led out of the electric equipment 101 in an annular manner at equal potential through a galvanized bolt 203 on the built matrix grounding body network 103.
The third embodiment:
city rail cloud platform disaster preparation center computer lab lightning grounding system:
as shown in fig. 1, 7 and 9, a matrix type lightning protection grounding system for an urban rail cloud platform machine room comprises electric equipment 101 of the machine room;
as shown in fig. 13, the electric device 101 includes:
providing resources such as calculation, network, storage, safety and the like for a safety production network, providing storage resources for an external service network, and internally managing network equipment;
the electric equipment 101 is connected to a matrix type grounding body network 103 in an equipotential and annular mode through a grounding cable 102.
The ground cable 102 includes two ground cables 102 with a wire diameter of 10mm, and any one of the two ground cables 102 is a fault reserve cable.
The matrix grounding body network 103 is built by adopting a copper strip 201, the copper strip 201 is preferably a 30x4mm copper strip 201, and the built matrix grounding body network 103 is supported by a frame.
As shown in fig. 2, the crossing position of the copper tape 201 is fixed by welding and through a phi 10 insulator 202, and the copper tape 201 fixes the grounding cable 102 through a galvanized bolt 203.
The consumer 101 includes wind water and electricity equipment, light current equipment, wind water and electricity equipment is female the arranging annular of PCE ground connection through corresponding equipment terminal case and is inserted, light current equipment is female the arranging annular of the row of WCE light current through corresponding equipment terminal case and is inserted matrix ground connection body network.
The machine room and corresponding grounding terminal boxes in other equipment rooms are respectively connected with 102 corresponding WCE weak current busbars connected with a matrix grounding body network through 95mm grounding cables;
and the resistance of each electric device 101 of the machine room to the ground is less than 0.2 omega.
The grounding body network 103 is directly connected to the lower part of the cabinet of the electric equipment 101.
As shown in fig. 10, the present invention further provides an access method for a matrix lightning protection grounding system in an urban rail cloud platform machine room, including:
s101: the matrix type grounding body network 103 of the lightning protection grounding system is built through a copper strip 201;
s102: fixing the crossing position of the copper strip 201 on the built matrix type grounding body network 103;
s103: the grounding cable 102 is led out of the annular fixed electric equipment 101 with equal potential on the matrix grounding body network 103 after being built;
s104: finally, the lightning protection grounding system is formed.
The lightning protection grounding system comprises electric equipment 101;
the electric device 101 includes:
providing resources such as calculation, network, storage, safety and the like for a safety production network, providing storage resources for an external service network, and internally managing network equipment;
the access method further comprises the following steps:
the crossing position of the copper strips 201 of the built matrix type grounding body network 103 is fixed through welding and an insulator 202;
and (3) fixing the grounding cable 102 led out of the electric equipment 101 in an annular manner at equal potential through a galvanized bolt 203 on the built matrix grounding body network 103.
The working principle is as follows:
the invention is connected with a matrix type grounding body network through the grounding cable in an equipotential and annular mode by the electric equipment, the grounding network is formed by grounding in a mode of combining S type and M type, the grounding network saves cost, improves construction speed and ensures construction quality, the scheme comprises the steps of building the matrix type grounding body network in a cloud platform center machine room and a disaster preparation center machine room, fixing the grounding cable by welding and a phi 10 insulator at the crossed position of the copper strip by adopting the copper strip, fixing the grounding cable by a galvanized bolt, ensuring the grounding integrity and reliability as the crossed position of the copper strip is fixed above the phi 10 insulator (coating resistance reducing agent), avoiding the influence of the structure on the grounding effect, ensuring the large surface contact area and uniform distribution of the copper strip, neglecting the influence of distance on the grounding network, ensuring the consistent grounding resistance value below each cabinet, and simultaneously fixing the copper strip by the insulator, the invention overcomes the influence of the environment on grounding, improves the grounding reliability, thereby ensuring the grounding is integrally reliable, avoids the influence of the structure on the grounding effect, has larger surface contact area and uniform distribution of the red copper strip, neglects the influence of the distance on a grounding network, ensures the grounding resistance value under each cabinet to be consistent, adopts two 10mm grounding copper wires for the cabinets, is connected above the copper strip to form annular grounding, and ensures the reliability of the whole grounding system.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (2)
1. A matrix type lightning protection grounding system of an urban rail cloud platform machine room is characterized by comprising electric equipment of the machine room, wherein the electric equipment is equipotentially and annularly connected into a matrix type grounding body network through a grounding cable;
the grounding cables comprise two grounding cables with the wire diameter of 10mm, and any one of the two grounding cables is a fault standby cable;
the matrix grounding body network is built by adopting a copper strip which is a 30x4mm red copper strip, and the built matrix grounding body network is supported by a frame;
the crossed position of the copper strip is fixed through a phi 10 insulator by welding, and the copper strip is fixed with a grounding cable through a galvanized bolt;
the power utilization equipment comprises weak current equipment which is annularly connected into the matrix type grounding body network through a WCE weak current busbar of the corresponding equipment terminal box;
the machine room and corresponding grounding terminal boxes in other equipment rooms are respectively connected with corresponding WCE weak current busbars connected with a matrix grounding body network through 95mm grounding cables;
each electric device of the machine room has a resistance to ground less than 0.2 omega;
and the lower part of the cabinet of the electric equipment is directly connected into a grounding body network.
2. An access method of a matrix type lightning protection grounding system of an urban rail cloud platform machine room is characterized by comprising the following steps:
building a matrix grounding body network of the lightning protection grounding system according to claim 1 through copper strips;
welding the copper strip cross position of the built matrix type grounding body network and fixing the copper strip cross position through an insulator;
the built matrix type grounding body network is fixed with a grounding cable led out of electric equipment in an annular mode through zinc-plated bolts in an equipotential mode;
eventually forming the lightning protection grounding system of claim 1.
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| CN102956997A (en) * | 2012-11-12 | 2013-03-06 | 国家电网公司 | Equipotential lightning protection auxiliary device for small-scale industrial control room |
| CN111347943A (en) * | 2020-04-07 | 2020-06-30 | 中车株洲电力机车有限公司 | Rail transit vehicle grounding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956997A (en) * | 2012-11-12 | 2013-03-06 | 国家电网公司 | Equipotential lightning protection auxiliary device for small-scale industrial control room |
| CN111347943A (en) * | 2020-04-07 | 2020-06-30 | 中车株洲电力机车有限公司 | Rail transit vehicle grounding system |
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