CN104954339A - Electric power emergency repair remote communication method and system - Google Patents
Electric power emergency repair remote communication method and system Download PDFInfo
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- CN104954339A CN104954339A CN201410125814.8A CN201410125814A CN104954339A CN 104954339 A CN104954339 A CN 104954339A CN 201410125814 A CN201410125814 A CN 201410125814A CN 104954339 A CN104954339 A CN 104954339A
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Abstract
The invention discloses an electric power emergency repair remote communication method and system. The method comprises the steps that field data acquired at an emergency repair field are transmitted to a security access platform by a field local communication system through a transformer substation; security processing is performed on the field data by the security access platform, and the security processing includes data decryption, identity authentication and data filtering; and the field data after security processing are transmitted to an emergency repair dispatching center by the security access platform so as to indicate the emergency repair dispatching center to perform corresponding operation. According to the method, security management and control of a wireless private network through data decryption, identity authentication and data filtering can be realized by the security access platform so that security of electric power sensitive information can be increased.
Description
Technical field
The present invention relates to power emergency repair communication technical field in the communications field, particularly, relate to a kind of power emergency repair remote communication method and system.
Background technology
Power emergency repair business has the advantages that mobility is strong, real-time is high, need to set up communication system at short notice, the communication mode generally adopted at present is wireless public network (GPRS, 3G etc.) and satellite, but the bandwidth that wireless public network provides is difficult to meet the business demands such as emergency first-aid repair HD video, real-time GIS; Satellite communication cost is higher, and quorum sensing inhibitor is more serious by surface structures, weather effect.Some areas have attempted utilizing wireless private network to carry power emergency repair business, the mode adopted is that wireless private network directly accesses electric power system Intranet, wireless private network refers to that industry or enterprise meet the private radio communication network that the special applications demands such as self organization of production, command scheduling and information management build, and comprises the multiple technologies standards such as LTE, WiMAX, McWILL, WiFi, ZigBee.But wireless private network directly accesses electric power system Intranet lacks effective protecting information safety measure, be difficult to meet relevant information security management regulation, be therefore confined to pilot scope, fail to apply.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems:
(1) bandwidth that wireless public network provides is difficult to meet the business demand such as emergency first-aid repair HD video, real-time GIS (Geographic Information System, GIS-Geographic Information System).
(2) satellite communication cost is higher, and quorum sensing inhibitor is comparatively serious by surface structures, weather effect, is difficult to real-time, round-the-clock open-minded.
(3) wireless private network lacks corresponding protecting information safety measure, is difficult to meet relevant information security management regulation.
Summary of the invention
The defect that when the present invention is to overcome power emergency repair communication system communication in prior art, Information Security is not high, according to an aspect of the present invention, proposes a kind of power emergency repair remote communication method.
According to a kind of power emergency repair remote communication method of the embodiment of the present invention, comprising: the field data in emergency first-aid repair collection in worksite is sent to secure accessing platform by transformer station by on-the-spot local communication system; Secure accessing platform carries out safe handling to field data, and safe handling comprises: data deciphering, authentication and data filtering; Field data after safe handling is sent to emergency first-aid repair control centre by secure accessing platform, and instruction emergency first-aid repair control centre performs corresponding operation.
In technique scheme, set up SSL vpn tunneling and be connected between transformer station with secure accessing platform, transformer station is as SSL VPN client, and secure accessing platform is as SSL vpn server end; On-the-spot local communication system with set up L2TP vpn tunneling between emergency first-aid repair control centre and be connected, command scheduling server is as L2TP server end, and emergency first-aid repair control centre is as L2TP client.
In technique scheme, the field data in emergency first-aid repair collection in worksite is sent to secure accessing platform, comprises: the field data being taken at emergency first-aid repair collection in worksite; Configuration virtual IP address, sets up new TCP with secure accessing platform and is connected; Consulting session key, and session key and field data are sent to secure accessing platform.
In technique scheme, before secure accessing platform carries out the step of safe handling to field data, also comprise: on-the-spot local communication system carries out the process of encapsulation L2TP protocol header to field data, determines level package field data; Transformer station carries out the process of encapsulation ssl protocol header to level package field data, determines second level package field data, and second level package field data is sent to secure accessing platform; Secure accessing platform carries out the process of parsing ssl protocol header to second level package field data, obtains level package field data;
After the step field data after safe handling being sent to emergency first-aid repair control centre, also comprise: emergency first-aid repair control centre carries out the process of parsing L2TP protocol header to the field data after safe handling.
In technique scheme, field data is sent to secure accessing platform by power optical fiber communication network by transformer station.
The defect that when the present invention is to overcome power emergency repair communication system communication in prior art, Information Security is not high, according to an aspect of the present invention, proposes a kind of power emergency repair telecommunication system.
According to a kind of power emergency repair telecommunication system of the embodiment of the present invention, comprising: on-the-spot local communication system, transformer station, secure accessing platform and emergency first-aid repair control centre; On-the-spot local communication system is connected with emergency first-aid repair control centre with secure accessing platform by transformer station successively; On-the-spot local communication system comprises: data collection station, command scheduling server and wireless base station, data collection station is connected with wireless base station respectively with command scheduling server.
In technique scheme, transformer station comprises: wireless CPE and Security Encryption module, and wireless CPE is connected with Security Encryption module; Security Encryption module comprises USBKey or TF encrypted card.
In technique scheme, secure accessing platform comprises: safe access gateway, authentication module and data filtering module, and described safe access gateway is connected with described data filtering module with described authentication module respectively; Described transformer station is connected with described emergency first-aid repair control centre by described safe access gateway.
In technique scheme, set up SSL vpn tunneling and be connected between described transformer station with described secure accessing platform, described transformer station is as SSL VPN client, and described secure accessing platform is as SSL vpn server end; Set up L2TPVPN tunnel between described on-the-spot local communication system with described emergency first-aid repair control centre to be connected, described command scheduling server is as L2TP server end, and described emergency first-aid repair control centre is as L2TP client.
In technique scheme, described transformer station is connected with described secure accessing platform by power optical fiber communication network.
A kind of power emergency repair remote communication method that the embodiment of the present invention provides and system, by the multimedia dispatching data access secure accessing platform that wireless private network carries, realize the security management and control such as data encryption, authentication, data filtering to wireless private network by secure accessing platform, solve the problem that there is potential safety hazard when utilizing wireless private network transferring electric power sensitive information.Meanwhile, based on the information access method of nested vpn tunneling, utilize the method for the nested SSL vpn tunneling of L2TP VPN to achieve Session Initiation Protocol and pass through secure accessing platform, ensure that the normal realization of multimedia dispatching business.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structure chart of power emergency repair telecommunication system in the embodiment of the present invention;
Fig. 2 is the schematic diagram that in the embodiment of the present invention, power emergency repair telecommunication system tunnel is nested;
Fig. 3 is that in the embodiment of the present invention, schematic diagram is resolved in message encapsulation;
Fig. 4 is the structure chart of power emergency repair telecommunication system in the embodiment of the present invention one;
Fig. 5 is power emergency repair remote communication method flow chart in the embodiment of the present invention;
Fig. 6 is the detail flowchart of power emergency repair remote communication method in the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
According to the embodiment of the present invention, provide a kind of power emergency repair telecommunication system, Fig. 1 is the structure chart of this power emergency repair telecommunication system, specifically comprises: on-the-spot local communication system 10, transformer station 20, secure accessing platform 30 and emergency first-aid repair control centre 40; Wherein, on-the-spot local communication system 10 is connected with emergency first-aid repair control centre 40 with secure accessing platform 30 by transformer station 20 successively.
Concrete, on-the-spot local communication system 10 comprises: data collection station 101, command scheduling server 102 and wireless base station 103, data collection station 101 is connected with wireless base station 103 respectively with command scheduling server 102.
Data collection station 101, for gathering the field data at emergency first-aid repair scene, specifically comprises voice terminal, video terminal and data terminal etc.By wireless base station 103, this field data is converged to command scheduling server 102 simultaneously, command scheduling server 102 carries out integration process to the field data collected, and again utilizes wireless base station 103, by wireless private network, field data is sent to the on-the-spot nearest transformer station 20 of distance repairing with the form of packet.
Transformer station 20 comprises: wireless CPE(Customer Premise Equipment customer terminal equipment) 201 and Security Encryption module 202, wireless CPE201 is connected with Security Encryption module 202.
Wireless CPE201 receives the field data from on-the-spot local communication system 10, and by Security Encryption module 202, this field data is encrypted, and by the Ethernet interface of wireless CPE201, the field data after encryption is accessed power optical fiber communication network, utilize power optical fiber communication network to be sent to secure accessing platform 30.
Security Encryption module 202 is specifically as follows USBKey or TF(Trans-flash, mobile memory card) encrypted card, its function is as follows:
(1), based on the authentication of digital certificate.USBKey or TF encrypted card provides a digital certificate, ensures the legitimacy of user identity.
(2), virtual ip address, set up new TCP and connect.The virtual IP address of USBKey or TF encrypted card, is connected for setting up new TCP with secure accessing platform 30, and the message that former TCP connects is encapsulated within new connection as data field.
(3), data encryption.Set up when TCP connects at every turn and all want consulting session key, accomplish one-time pad, strengthen the confidentiality of message.
Secure accessing platform 30 is the key foundation building intelligent grid information security access system, by measures such as two-way certificate verification, data confidentiality transmission, safe access control, Network Isolation and secure data filters, Real-time Monitor Management, under bearing the various complex network environment of intelligent grid, intelligent terminal is monitored in real time, secure accessing, Security Data Transmission and the critical function such as exchange, early warning.Concrete, secure accessing platform 30 comprises: safe access gateway 301, authentication module 302 and data filtering module 303, safe access gateway 301 is connected with data filtering module 303 with authentication module 302 respectively.
Field data is transferred to the secure accessing platform 30 of far-end through power optical fiber communication network, field data is transferred to emergency first-aid repair control centre 40 after coordinating with USBKey or TF encrypted card measures such as realizing data deciphering, filtration, authentication by secure accessing platform 30.
Emergency first-aid repair control centre 40 configures the client one of of PC as command scheduling server 102, sets up TCP and is connected, realize information interaction with command scheduling server 102.
A kind of power emergency repair telecommunication system that the embodiment of the present invention provides, by the multimedia dispatching data access secure accessing platform that wireless private network carries, realize the security management and control such as data encryption, authentication, data filtering to wireless private network by secure accessing platform, solve the problem that there is potential safety hazard when utilizing wireless private network transferring electric power sensitive information.
On the other hand, emergency first-aid repair dispatching patcher is the integrated dispatch realizing the multimedia messagess such as video, voice, data, generally have employed Session initiation Protocol (SIP, Session Initiation Protocol) as signaling control protocol, the scheduling feature such as realize MPTY, intrusion, toll breakdown, but the access of Session Initiation Protocol directly do not supported by secure accessing platform 30, therefore, after adding information security access platform in a communication link, emergency first-aid repair control centre 40 directly can not set up communication linkage based on Session Initiation Protocol and repairing scene.
In the embodiment of the present invention, adopting based on nested VPN(Virtual Private Network, VPN (virtual private network)) data cut-in method in tunnel carrys out transmitting SIP agreement.Tunneling technique is a kind of encapsulation technology, it utilizes a kind of procotol to transmit another kind of procotol, namely a kind of network transmission protocol is utilized, the data message that other agreements produce is encapsulated in its message, then transmit in a network, conventional tunnel protocol comprises L2TP(Layer Two Tunneling Protocol, Level 2 Tunnel Protocol), GRE(Generic Routing Encapsulation, generic route encapsulation), IPsec(IP Security, IP security protocol), SSL VPN(Secure Sockets Layer, SSL, Virtual Private Network, VPN (virtual private network)) etc.Secure accessing platform 30 realizes external user secure access Intranet information based on the mode of similar SSL VPN, when external user and operation system connect, in fact first set up tunnel with secure accessing platform to be connected, secure accessing platform provides information to forward service between external user and operation system, carries out the operation such as encryption and decryption, data filtering simultaneously.
Shown in Figure 2, set up SSL vpn tunneling in the embodiment of the present invention between transformer station 20 with secure accessing platform 30 and be connected, transformer station 20 is as SSL VPN client, and secure accessing platform 30 is as SSL vpn server end; Meanwhile, on-the-spot local communication system 10 with set up L2TP vpn tunneling between emergency first-aid repair control centre 40 and be connected, command scheduling server 102 is as L2TP server end, and emergency first-aid repair control centre 40 is as L2TP client.
Concrete, L2TP server software is installed in command scheduling server 102, L2TP client software is installed as command scheduling client by emergency first-aid repair control centre 40, command scheduling server with establish L2TP vpn tunneling between client and be connected, realization is nested with SSL vpn tunneling, like this message of Session Initiation Protocol is encapsulated in after among L2TP agreement and carries out information transmission again, rear discovery resolved by secure accessing platform 30 is L2TP protocol massages, can forward to object operation system further.
Message encapsulation and the schematic diagram of resolving are as shown in Figure 3, L2TP server can fictionalize an IP address, to the upper L2TP protocol massages of the TCP message of Session Initiation Protocol encapsulation, ssl protocol message is encapsulated further through wireless CPE201, secure accessing platform 30 can only parse L2TP protocol massages, forward the packet to L2TP client, L2TP client restores Session Initiation Protocol message by after L2TP packet parsing, realizes once communicating.The data flow of command scheduling client-access command scheduling server 102 is contrary to the above.
The message encapsulation of nested vpn tunneling is as follows with parsing concrete steps:
Steps A 1, on-the-spot local communication system 10 adopt Session Initiation Protocol as signaling control protocol, carry out dispatch control by command scheduling server 102.
The virtual IP address of steps A 2, command scheduling server 102, to the upper L2TP protocol massages of the TCP message of Session Initiation Protocol encapsulation, uses this virtual ip address in message.
The virtual equally IP address of steps A 3, Security Encryption module 202, encapsulation ssl protocol message, uses this virtual ip address in message further.
Steps A 4, secure accessing platform 30 parse ssl protocol, and the data field restored is L2TP protocol massages, instead of Session Initiation Protocol message, therefore can not filter this message.
Steps A 5, L2TP message are forwarded to emergency first-aid repair control centre 40, and emergency first-aid repair control centre 40 restores Session Initiation Protocol message by after L2TP packet parsing, realize once communicating.
The communication process of power emergency repair telecommunication system is introduced in detail below by an embodiment.
Embodiment one
In embodiment one, the field data that emergency first-aid repair video terminal, voice terminal, data terminal etc. gather is after command scheduling server 102 this locality is converged, utilize wireless private network as transmission channel, after access security access platform 30, be delivered to the command scheduling client (i.e. emergency first-aid repair control centre 40) of Intranet; Adopt the cut-in method of nested vpn tunneling to realize Session Initiation Protocol simultaneously and pass through secure accessing platform 30, ensure that the normal realization of emergency first-aid repair multimedia dispatching business.
In embodiment one, each communication node IP is planned to 5 groups, concrete ginseng is shown in Table 1:
Table 1
In embodiment one, according to arranging each communicating node device shown in Fig. 4, configuration internal, external network IP address and IP address of eating dishes without rice or wine.Wireless CPE201, according to USBKey or built-in TF card, installs corresponding driving, for SSL VPN client distributes virtual ip address.Safe access gateway 301 arranges corresponding route and maps, and configures corresponding SSL VPN virtual IP address, sets up SSL vpn tunneling.Dispatch control server 102 is configured to L2TP server end, arranges corresponding L2TP VPN virtual ip address.Dispatch control client configuration is L2TP client, arranges corresponding L2TP VPN virtual ip address, sets up L2TP vpn tunneling.The safe transmission of field data can be completed by the cut-in method of nested vpn tunneling.
More than describe the 26S Proteasome Structure and Function of power emergency repair telecommunication system in detail, based on this power emergency repair telecommunication system, the embodiment of the present invention also provides a kind of power emergency repair remote communication method, introduces the idiographic flow of the method below in detail.
A kind of power emergency repair remote communication method that the embodiment of the present invention provides, shown in Figure 5, comprising:
Step 501: the field data in emergency first-aid repair collection in worksite is sent to secure accessing platform by transformer station by on-the-spot local communication system.
Concrete, step 501 comprises step B1-B3:
Step B1, be taken at the field data of emergency first-aid repair collection in worksite;
Step B2, configuration virtual IP address, set up new TCP with secure accessing platform and be connected;
Step B3, consulting session key, and session key and field data are sent to secure accessing platform.
Wherein, step B2 and step B3 is specifically completed by the Security Encryption module of transformer station, and Security Encryption module can be USBKey or TF encrypted card, and concrete function, see above, does not repeat herein.
Step 502: secure accessing platform carries out safe handling to field data, and safe handling comprises: data deciphering, authentication and data filtering.
Secure accessing platform is the key foundation building intelligent grid information security access system, by field data access security access platform is carried out safe handling, can improve the fail safe of data.
Step 503: the field data after safe handling is sent to emergency first-aid repair control centre, instruction emergency first-aid repair control centre performs corresponding operation.
A kind of power emergency repair remote communication method that the embodiment of the present invention provides, by the multimedia dispatching data access secure accessing platform that wireless private network carries, realize the security management and control such as data encryption, authentication, data filtering to wireless private network by secure accessing platform, solve the problem that there is potential safety hazard when utilizing wireless private network transferring electric power sensitive information.
In the embodiment of the present invention, the data cut-in method based on nested vpn tunneling is adopted to carry out transmitting SIP agreement.Concrete, set up SSL vpn tunneling between transformer station with secure accessing platform and be connected, transformer station is as SSL VPN client, and secure accessing platform is as SSL vpn server end; On-the-spot local communication system with set up L2TP vpn tunneling between emergency first-aid repair control centre and be connected, command scheduling server is as L2TP server end, and emergency first-aid repair control centre is as L2TP client.
The flow process of power emergency repair remote communication method is introduced in detail below by an embodiment.
Embodiment two
In embodiment two, emergency first-aid repair video terminal, voice terminal, data terminal etc. gather field data at the scene local communication system converge after, utilize wireless private network as transmission channel, after access security access platform, be delivered to the emergency first-aid repair control centre of Intranet; Adopt the cut-in method of nested vpn tunneling to realize Session Initiation Protocol simultaneously and pass through secure accessing platform, ensure that the normal realization of emergency first-aid repair multimedia dispatching business.
Shown in Figure 6, the idiographic flow of power emergency repair remote communication method is as follows:
Step 601: on-the-spot local communication system is taken at the field data of emergency first-aid repair collection in worksite, and the process of encapsulation L2TP protocol header is carried out to this field data.
Step 602: the field data of encapsulation L2TP protocol header is sent to nearest transformer station by on-the-spot local communication system.
Step 603: transformer station configuration virtual IP address, sets up new TCP with secure accessing platform and is connected.
Step 604: transformer station's consulting session key, and the process of encapsulation ssl protocol header is carried out to the field data received.
Step 605: the field data of encapsulation ssl protocol header is sent to secure accessing platform by transformer station.
Step 606: ssl protocol header resolved by secure accessing platform, obtains the field data of encapsulation L2TP protocol header, and carries out safe handling to this field data.
Step 607: the field data after process is sent to emergency first-aid repair control centre by secure accessing platform.
Step 608: emergency first-aid repair control centre resolves L2TP protocol header, obtains initial field data, i.e. Session Initiation Protocol instruction.
To sum up, a kind of power emergency repair remote communication method that the embodiment of the present invention provides and system, by the multimedia dispatching data access secure accessing platform that wireless private network carries, realize the security management and control such as data encryption, authentication, data filtering to wireless private network by secure accessing platform, solve the problem that there is potential safety hazard when utilizing wireless private network transferring electric power sensitive information.Meanwhile, based on the information access method of nested vpn tunneling, utilize the method for the nested SSL vpn tunneling of L2TP VPN to achieve Session Initiation Protocol and pass through secure accessing platform, ensure that the normal realization of multimedia dispatching business.
The present invention can have multiple multi-form embodiment; above for Fig. 1-Fig. 6 by reference to the accompanying drawings to technical scheme of the present invention explanation for example; this does not also mean that the instantiation that the present invention applies can only be confined in specific flow process or example structure; those of ordinary skill in the art should understand; specific embodiments provided above is some examples in multiple its preferred usage, and the execution mode of any embodiment the claims in the present invention all should within technical solution of the present invention scope required for protection.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a power emergency repair remote communication method, is characterized in that, comprising:
Field data in emergency first-aid repair collection in worksite is sent to secure accessing platform by transformer station by on-the-spot local communication system;
Described secure accessing platform carries out safe handling to described field data, and described safe handling comprises: data deciphering, authentication and data filtering;
Field data after described safe handling is sent to emergency first-aid repair control centre by described secure accessing platform, indicates described emergency first-aid repair control centre to perform corresponding operation.
2. method according to claim 1, is characterized in that,
Set up SSL vpn tunneling between described transformer station with described secure accessing platform to be connected, described transformer station is as SSL VPN client, and described secure accessing platform is as SSL vpn server end;
Set up L2TP vpn tunneling between described on-the-spot local communication system with described emergency first-aid repair control centre to be connected, described command scheduling server is as L2TP server end, and described emergency first-aid repair control centre is as L2TP client.
3. method according to claim 1 and 2, is characterized in that, described the field data in emergency first-aid repair collection in worksite is sent to secure accessing platform, comprising:
Be taken at the field data of emergency first-aid repair collection in worksite;
Configuration virtual IP address, sets up new TCP with described secure accessing platform and is connected;
Consulting session key, and described session key and described field data are sent to described secure accessing platform.
4. method according to claim 2, is characterized in that, before at described secure accessing platform described field data being carried out to the step of safe handling, also comprises:
Described on-the-spot local communication system carries out the process of encapsulation L2TP protocol header to described field data, determines level package field data; Described transformer station carries out the process of encapsulation ssl protocol header to described level package field data, determines second level package field data, and described second level package field data is sent to described secure accessing platform; Described secure accessing platform carries out the process of parsing ssl protocol header to described second level package field data, obtains described level package field data;
After the step field data after described safe handling being sent to emergency first-aid repair control centre, also comprise:
Described emergency first-aid repair control centre carries out the process of parsing L2TP protocol header to the field data after described safe handling.
5. method according to claim 1 and 2, is characterized in that, described field data is sent to described secure accessing platform by power optical fiber communication network by described transformer station.
6. a power emergency repair telecommunication system, is characterized in that, comprising: on-the-spot local communication system, transformer station, secure accessing platform and emergency first-aid repair control centre;
Described on-the-spot local communication system is connected with described emergency first-aid repair control centre with described secure accessing platform by described transformer station successively;
Described on-the-spot local communication system comprises: data collection station, command scheduling server and wireless base station, and described data collection station is connected with described wireless base station respectively with described command scheduling server.
7. system according to claim 6, is characterized in that, described transformer station comprises: wireless CPE and Security Encryption module, and described wireless CPE is connected with described Security Encryption module;
Described Security Encryption module comprises USBKey or TF encrypted card.
8. system according to claim 6, it is characterized in that, described secure accessing platform comprises: safe access gateway, authentication module and data filtering module, and described safe access gateway is connected with described data filtering module with described authentication module respectively;
Described transformer station is connected with described emergency first-aid repair control centre by described safe access gateway.
9., according to the arbitrary described system of claim 6-8, it is characterized in that,
Set up SSL vpn tunneling between described transformer station with described secure accessing platform to be connected, described transformer station is as SSL VPN client, and described secure accessing platform is as SSL vpn server end;
Set up L2TP vpn tunneling between described on-the-spot local communication system with described emergency first-aid repair control centre to be connected, described command scheduling server is as L2TP server end, and described emergency first-aid repair control centre is as L2TP client.
10., according to the arbitrary described system of claim 6-8, it is characterized in that, described transformer station is connected with described secure accessing platform by power optical fiber communication network.
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| CN107645509A (en) * | 2017-10-19 | 2018-01-30 | 国网四川省电力公司乐山供电公司 | Portable multimedia consultation head |
| CN107645509B (en) * | 2017-10-19 | 2020-11-06 | 国网四川省电力公司乐山供电公司 | Portable multimedia consultation cloud platform |
| CN108198267A (en) * | 2018-01-02 | 2018-06-22 | 国网浙江省电力有限公司电力科学研究院 | Line inspection method and system based on intelligent terminal |
| CN109005031A (en) * | 2018-08-10 | 2018-12-14 | 湖南中车时代通信信号有限公司 | A kind of key management method for railway signal system |
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