CN110034980A - A kind of power communication inspection base - Google Patents
A kind of power communication inspection base Download PDFInfo
- Publication number
- CN110034980A CN110034980A CN201910469827.XA CN201910469827A CN110034980A CN 110034980 A CN110034980 A CN 110034980A CN 201910469827 A CN201910469827 A CN 201910469827A CN 110034980 A CN110034980 A CN 110034980A
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- Prior art keywords
- handheld terminal
- communication
- power communication
- overhaul
- terminal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004891 communication Methods 0.000 title claims abstract description 118
- 238000007689 inspection Methods 0.000 title claims abstract description 23
- 238000012423 maintenance Methods 0.000 claims description 59
- 230000003993 interaction Effects 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims 1
- 238000007726 management method Methods 0.000 description 48
- 230000008859 change Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012550 audit Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/12—Network monitoring probes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
This application provides a kind of power communication inspection bases, comprising: RFID chip, handheld terminal, vpn gateway equipment and backstage overhaul management terminal;The RFID chip is arranged in a one-to-one correspondence with electric power communication device;The handheld terminal specifically includes: RFID read-write circuit and VPN network interface;The handheld terminal is connect by the VPN network interface with the vpn gateway equipment, and is communicated to connect by the vpn gateway equipment and the backstage overhaul management terminal.The application is using dedicated handheld terminal provided by the present application as major communication vehicle, pass through the vpn gateway equipment at handheld terminal access device scene, it realizes and has secure access to backstage overhaul management terminal in Overhaul site, solve the technical issues of existing communication equipment service work low efficiency.
Description
Technical field
This application involves electrical management field more particularly to a kind of power communication inspection bases.
Background technique
Power telecom network carries a large amount of important electric power services, such as stable control channel, relay protection channel, remote
The business such as dynamic channel, dispatch data net, video conference channel, each business is by different power generation department liable management.When by
In the reasons such as communication equipment fault or the access of new traffic equipment, communication equipment service work need to be implemented, interrupt the industry of equipment carrying
When business, Ying Ti forward business affiliated function's transacting business interrupts application formality.
Although power telecom network is applied in most power equipment, electric power equipment management is realized substantially
Long-range management, but due to worrying that the security risks such as information leakage, the application way of power communication maintenance still remain original
Declare mode, for power communication service personnel after completing the prospecting of power communication Overhaul site, power communication service personnel can not be
Overhaul of the equipments scene logs in the overhaul management terminal at back-stage management center, need to arrive office and complete communication resource verification and maintenance Shen
Work is reported, after maintenance application to be confirmed is granted, ability returning equipment Overhaul site carries out service work, seriously delays communication
Equipment and service recovery time.
Summary of the invention
This application discloses a kind of power communication inspection base, for solve existing communication equipment service work by
In worrying the security risks such as information leakage, power communication service personnel can not log in Power Communication Resources pipe at overhaul of the equipments scene
The maintenance application system of server and each business department is managed, so power communication service personnel completes power communication Overhaul site
After prospecting, office need to be arrived and complete communication resource verification and overhaul declaration work, after maintenance application to be confirmed is granted, can just be returned
It goes back to overhaul of the equipments scene and carries out service work, communication equipment and service recovery time are long, the low technical problem of overhaul efficiency.
In view of this, this application provides a kind of power communication inspection bases, comprising: RFID chip, handheld terminal,
Vpn gateway equipment and backstage overhaul management terminal;
The RFID chip is arranged in a one-to-one correspondence with electric power communication device;
The handheld terminal specifically includes: RFID read-write circuit and VPN network interface;
The handheld terminal is connect by the VPN network interface with the vpn gateway equipment, and passes through the VPN net
It closes equipment and the backstage overhaul management terminal communicates to connect.
Preferably, further includes: communication encryption and decryption circuit;
The communication encryption and decryption circuit is respectively arranged in the handheld terminal and the backstage overhaul management terminal, is used
It is encrypted or is decrypted in the communication information between the handheld terminal and the backstage overhaul management terminal.
Preferably, the backstage overhaul management terminal specifically includes: communication resource management server and maintenance applications management
Server;
The communication resource management server is connected with the maintenance applications management server by internal network communication;
The communication resource management server is used to store the business information of the electric power communication device carrying;
The maintenance applications management server is used to store and manage the maintenance request for data that the handheld terminal is sent.
Preferably, the handheld terminal further include: human-computer interaction device;
The human-computer interaction device is set to the case surface of the handheld terminal.
Preferably, the handheld terminal further include: memory;
The memory is for storing maintenance application template data.
Preferably, the human-computer interaction device is specially key and display screen.
Preferably, the human-computer interaction device is specially touch screen.
As can be seen from the above technical solutions, the application has the following advantages:
This application provides a kind of power communication inspection bases, comprising: RFID chip, handheld terminal, vpn gateway are set
Standby and backstage overhaul management terminal;The RFID chip is arranged in a one-to-one correspondence with electric power communication device;The handheld terminal is specific
It include: RFID read-write circuit and VPN network interface;The handheld terminal is set by the VPN network interface with the vpn gateway
Standby connection, and communicated to connect by the vpn gateway equipment and the backstage overhaul management terminal.
The application is set using dedicated handheld terminal provided by the present application as major communication vehicle by handheld terminal access
The vpn gateway equipment at standby scene, realizes and has secure access to backstage overhaul management terminal in Overhaul site, solves existing communication and sets
The technical issues of standby service work low efficiency.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of system of one embodiment of the power communication inspection base provided in the embodiment of the present application
Structural schematic diagram;
Fig. 2 is a kind of system of second embodiment of the power communication inspection base provided in the embodiment of the present application
Structural schematic diagram.
Specific embodiment
The embodiment of the present application discloses a kind of power communication inspection base, for solving existing communication equipment maintenance
Due to worrying the security risks such as information leakage, power communication service personnel can not log in power communication at overhaul of the equipments scene for work
The maintenance application system of resource management server and each business department, so power communication service personnel completes power communication inspection
After repairing the inspection of the scene of a crime, office need to be arrived and complete communication resource verification and maintenance declaration work, after maintenance application to be confirmed is granted,
Ability returning equipment Overhaul site carries out service work, and communication equipment and service recovery time are long, and the low technology of overhaul efficiency is asked
Topic.
Fig. 1 and Fig. 2 are please referred to, the embodiment of the present application provides a kind of power communication inspection base, comprising: RFID core
Piece 1, handheld terminal 2, vpn gateway equipment 3 and backstage overhaul management terminal 4;
The RFID chip 1 is arranged in a one-to-one correspondence with electric power communication device;
The handheld terminal 2 specifically includes: RFID read-write circuit and VPN network interface;
The handheld terminal 2 is connect by the VPN network interface with the vpn gateway equipment 3, and passes through the VPN
Gateway 3 and the backstage overhaul management terminal 4 communicate to connect.
More specifically, further includes: communication encryption and decryption circuit 5;
Communication encryption and decryption circuit 5 is respectively arranged in handheld terminal 2 and backstage overhaul management terminal 4, for hand-held
The communication information between terminal 2 and backstage overhaul management terminal 4 is encrypted or is decrypted.
More specifically, the backstage overhaul management terminal 4 specifically includes: communication resource management server 41 and maintenance application
Management server 42;
The communication resource management server 41 and the maintenance applications management server 42 are connected by internal network communication
It connects;
The communication resource management server 41 is used to store the business information of the electric power communication device carrying;
The maintenance applications management server 42 is used to store and manage the maintenance application number that the handheld terminal 2 is sent
According to.
More specifically, the handheld terminal 2 further include: human-computer interaction device;
The human-computer interaction device is set to the case surface of the handheld terminal 2.
More specifically, the handheld terminal 2 further include: memory;
The memory is for storing maintenance application template data.
More specifically, the human-computer interaction device is specially key and display screen.
More specifically, the human-computer interaction device is specially touch screen.
It should be noted that the power communication inspection base of the present embodiment can specifically be divided into four parts, comprising:
The RFID chip 1 of equipment carrying, the handheld terminal 2 with 1 read-write capability of RFID chip and VPN network interface, vpn gateway equipment 3
With backstage overhaul management terminal 4.
Based on power communication inspection base provided in this embodiment, service personnel can set by handheld terminal 2
Standby Overhaul site has secure access to backstage overhaul management terminal 4, can also inquire the business that the communication equipment of Awaiting Overhaul is carried, fill out
Write maintenance request slip.System works out arrangement and method for construction automatically, analyzes the network risks point and field operation risk point of service work, fills out
The maintenance request slip of Xie Ge business affiliated function.After all business departments approve after examination, system passes through short message and mail notification
Service personnel's audit passes through.Service personnel can feed back the single execution of maintenance after Overhaul site overhauls by handheld terminal 2
Situation, notice 41 administrator of communication resource management server update communication resource information.
In the processing of communication equipment emergency, as backbone optical cable broken lot, segment core interrupt, central station transmission is set
The part communication services such as standby error code have interrupted in the normal situation of remaining business, and power communication service personnel rushes towards live determine and needs
After interruption communication equipment could repair failure, service impact range can be verified immediately, fills in maintenance request slip, it is automatic by system
Arrangement and method for construction is write, analysis maintenance risk point reduces communication maintenance application workload, when shortening communication equipment and business recovery
Between.
During power communication scheduled overhaul Request For Work, if related communication resource change, system to maintenance request slip
The mailbox and phone number of the Overhaul site work responsible person filled in sends and " since the communication resource changes, it is different to overhaul application
Meaning, please applies again." information.Overhaul site work responsible person can rewrite maintenance request slip immediately, avoid Awaiting Overhaul
When application goes into operation, just the business of discovery application interruption and the business that need to actually interrupt are inconsistent, need to resubmit maintenance request slip,
The case where service work can not be implemented according to plan.
After the completion of service work, power communication service personnel fills in the single executive condition of maintenance on handheld terminal 2, without returning
It goes back to office and fills in the single performance of maintenance and modification Power Communication Resources information.The letter of the communication resource as caused by service work
Breath can give communication resource management server 41 administrator with immediate feedback, avoid updating not in time due to the communication resource, influence it
The case where his communication work is normally carried out.
Communication maintenance application and maintenance performance can be completed in communication equipment Overhaul site in power communication service personnel
Feedback operation saves a large amount of working time without frequently round-trip Overhaul site and office.
The specific working mode of each component of the present embodiment includes:
One) 2 side of handheld terminal:
1, the service code recorded in RFID chip 1 of the communication service personnel by the reading Awaiting Overhaul equipment of handheld terminal 2,
Be then forwarded to communication resource management server 41, communication resource management server 41 according to service code inquiry business title,
Result is fed back into handheld terminal 2.
2, communication service personnel fills in maintenance request slip, then according to the appliance services inventory of inquiry on handheld terminal 2
Maintenance request slip is sent to maintenance applications management server 42.
3, communication service personnel can inquire the flow state of maintenance request slip on handheld terminal 2.
4, communication service personnel can receive the construction sent from maintenance applications management server 42 on handheld terminal 2
Network risks, operating risk during scheme, maintenance, and it is modified and is saved.
5, after the completion of overhauling, communication service personnel can fill in the single executive condition of maintenance on handheld terminal 2, then send
To backstage overhaul management terminal 4.
Wherein, the RFID chip 1 of the present embodiment is attached in equipment, records the service code that each communication equipment is carried.And
The RFID chip 1 of the present embodiment is only stored with the service code of the equipment, avoids the risk of business information leakage.
Two) 42 side of applications management server is overhauled:
1, according to the content of maintenance request slip, maintenance application is sent to the examination and repair system of each business affiliated function, and will be each
The flow state of business department's maintenance application sends back corresponding handheld terminal 2.If service work is all agreed to by all business departments,
The mailbox and phone number of the Overhaul site work responsible person then filled in maintenance request slip sends maintenance application and passes through information;
If related communication resource changes during having business department to disagree service work, or maintenance application approval, then to maintenance request slip
The mailbox and phone number of the Overhaul site work responsible person filled in sends maintenance application and disagrees information and dissenting original
Because of information.
2, according to the content of maintenance request slip, according to device type, corresponding construction is applied in the classification such as work on the spot environment
Scheme presets template, works out arrangement and method for construction automatically, sends back corresponding handheld terminal 2.
3, according to the content of maintenance request slip, the case where service disconnection and open loop, query communication resource management server 41,
The network risks during maintenance are analyzed, corresponding handheld terminal 2 is sent back.
4, according to the content of maintenance request slip, according to device type, situations such as work on the spot environment, during analyzing maintenance
Field operation risk, send back corresponding handheld terminal 2.
5, it after the completion of overhauling, is received from handheld terminal 2 and overhauls single executive condition information and save, if service work causes to lead to
Believe resource change, then sends modification information to 41 administrator of communication resource management server.
Four) 41 side of communication resource management server:
1, the business information of all communication equipment carryings is stored on communication resource management server 41, provides the change of resource
More and query function.41 administrator of communication resource management server can change resource data, remaining personnel can only query resource
Data.
2, service code is received from handheld terminal 2, corresponding Business Name can be inquired according to service code, looked into corresponding
It askes result and sends back handheld terminal 2.
3, it is received from maintenance applications management server 42 and overhauls single executive condition, resource modification information is sent to communication money
41 administrator of source control server modifies respective resources data after administrator's approval.
It is used as major communication vehicle by dedicated handheld terminal 2 provided by the present application, passes through 2 access device of handheld terminal
The vpn gateway equipment 3 at scene is realized and has secure access to backstage overhaul management terminal 4 in Overhaul site, fills in maintenance application, is not necessarily to
It is round-trip back and forth with office in Overhaul site, solve the technical issues of existing communication equipment service work low efficiency.
Five) VPN traffic channel
The communication channel of the embodiment of the present application can be by power line carrier network, public network and power optical fiber mixed networking.
At each communication equipment scene, service personnel passes through handheld terminal access carrier device end.
For the received information of carrier terminal by carrier network, approach intelligent electric meter (being deployed in metering main website), low pressure are visual
Change terminal (being deployed in distribution main website), O&M terminal (being deployed in intelligent O&M main website) is transmitted, two-way communication, carrier network
Dynamic provides 2-10M bandwidth.Support the addressing and plug and play of different types of terminals.
A kind of power communication inspection base provided herein is described in detail above, for this field
Those skilled in the art, according to the embodiment of the present application thought, have change in specific embodiments and applications
Place, in conclusion the contents of this specification should not be construed as limiting the present application.
Claims (7)
1. a kind of power communication inspection base characterized by comprising RFID chip, handheld terminal, vpn gateway equipment
With backstage overhaul management terminal;
The RFID chip is arranged in a one-to-one correspondence with electric power communication device;
The handheld terminal specifically includes: RFID read-write circuit and VPN network interface;
The handheld terminal is connect by the VPN network interface with the vpn gateway equipment, and is set by the vpn gateway
It is standby to be communicated to connect with the backstage overhaul management terminal.
2. power communication inspection base according to claim 1, which is characterized in that further include: communication encryption and decryption electricity
Road;
The communication encryption and decryption circuit is respectively arranged in the handheld terminal and the backstage overhaul management terminal, for pair
The communication information between the handheld terminal and the backstage overhaul management terminal is encrypted or is decrypted.
3. power communication inspection base according to claim 1, which is characterized in that the backstage overhaul management terminal
It specifically includes: communication resource management server and maintenance applications management server;
The communication resource management server is connected with the maintenance applications management server by internal network communication;
The communication resource management server is used to store the business information of the electric power communication device carrying;
The maintenance applications management server is used to store and manage the maintenance request for data that the handheld terminal is sent.
4. power communication inspection base according to claim 1, which is characterized in that the handheld terminal further include:
Human-computer interaction device;
The human-computer interaction device is set to the case surface of the handheld terminal.
5. power communication inspection base according to claim 2, which is characterized in that the handheld terminal further include:
Memory;
The memory is for storing maintenance application template data.
6. power communication inspection base according to claim 4, which is characterized in that the human-computer interaction device is specific
For key and display screen.
7. power communication inspection base according to claim 4, which is characterized in that the human-computer interaction device is specific
For touch screen.
Priority Applications (1)
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CN201910469827.XA CN110034980A (en) | 2019-05-31 | 2019-05-31 | A kind of power communication inspection base |
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CN201910469827.XA CN110034980A (en) | 2019-05-31 | 2019-05-31 | A kind of power communication inspection base |
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CN110034980A true CN110034980A (en) | 2019-07-19 |
Family
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CN201910469827.XA Pending CN110034980A (en) | 2019-05-31 | 2019-05-31 | A kind of power communication inspection base |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203217621U (en) * | 2012-12-06 | 2013-09-25 | 厦门明翰电气股份有限公司 | On-site comprehensive maintenance system of electrical equipment for distribution network |
CN105447647A (en) * | 2015-12-04 | 2016-03-30 | 重庆睿安特盾构技术有限公司 | Shield intelligent maintenance management system |
CN105657021A (en) * | 2016-01-12 | 2016-06-08 | 国家电网公司 | Method, apparatus and cloud server for processing power system defects |
CN106251420A (en) * | 2016-07-29 | 2016-12-21 | 国网山西省电力公司大同供电公司 | Electric power equipment inspection system |
CN107682220A (en) * | 2017-09-15 | 2018-02-09 | 宁波博恩电气有限公司 | Method for inspecting for power equipment |
CN208190352U (en) * | 2018-08-31 | 2018-12-04 | 海南电网有限责任公司澄迈供电局 | A kind of substation's defect information management system based on Internet of Things |
CN209748580U (en) * | 2019-05-31 | 2019-12-06 | 广东电网有限责任公司 | electric power communication overhauls management system |
-
2019
- 2019-05-31 CN CN201910469827.XA patent/CN110034980A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203217621U (en) * | 2012-12-06 | 2013-09-25 | 厦门明翰电气股份有限公司 | On-site comprehensive maintenance system of electrical equipment for distribution network |
CN105447647A (en) * | 2015-12-04 | 2016-03-30 | 重庆睿安特盾构技术有限公司 | Shield intelligent maintenance management system |
CN105657021A (en) * | 2016-01-12 | 2016-06-08 | 国家电网公司 | Method, apparatus and cloud server for processing power system defects |
CN106251420A (en) * | 2016-07-29 | 2016-12-21 | 国网山西省电力公司大同供电公司 | Electric power equipment inspection system |
CN107682220A (en) * | 2017-09-15 | 2018-02-09 | 宁波博恩电气有限公司 | Method for inspecting for power equipment |
CN208190352U (en) * | 2018-08-31 | 2018-12-04 | 海南电网有限责任公司澄迈供电局 | A kind of substation's defect information management system based on Internet of Things |
CN209748580U (en) * | 2019-05-31 | 2019-12-06 | 广东电网有限责任公司 | electric power communication overhauls management system |
Non-Patent Citations (1)
Title |
---|
张华鲁;贾玮;张天兵;周忠冉;: "电力企业移动信息化实施方案", 电信科学, no. 02 * |
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