CN102868452A - Mixed networking system for dense transmission channel - Google Patents
Mixed networking system for dense transmission channel Download PDFInfo
- Publication number
- CN102868452A CN102868452A CN2012103282509A CN201210328250A CN102868452A CN 102868452 A CN102868452 A CN 102868452A CN 2012103282509 A CN2012103282509 A CN 2012103282509A CN 201210328250 A CN201210328250 A CN 201210328250A CN 102868452 A CN102868452 A CN 102868452A
- Authority
- CN
- China
- Prior art keywords
- network
- access point
- wireless
- optical fiber
- networking system
- Prior art date
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a mixed networking system for a dense transmission channel. The mixed networking system comprises a field network field, a long-distance network section and a data network section, which are sequentially connected; the field network is a wireless closed loop network consisting of an OPGW (Optical Fiber Composite Overhead Ground Wire) optical fiber access point and a wireless network access point; the OPGW (Optical Fiber Composite Overhead Ground Wire) optical fiber access point is arranged on an iron tower of a gathering point; the wireless network access point is arranged on the iron tower; the long-distance network section is an OPGW optical network; a gathering node of the OPGW optical network is arranged on transformation substations at two ends of a transmission line; and a data network section is an electric information special internal network. Compared with the prior art, the mixed networking system provided by the invention has the advantages that the robustness of a communication network is enhanced; the information data transmission rate is improved; and the network communication cost is reduced.
Description
Technical field
The present invention relates to a kind of mixed networking system, especially relate to a kind of mixed networking system for intensive passway for transmitting electricity.
Background technology
At present, the application of domestic employing mixed networking technology in intensive passway for transmitting electricity obtained some achievements, and be still very unobvious with regard to present overall condition effect, exists in actual use significantly not enough.With regard to its reason, means of communication mainly depends on public wireless network, such as GPRS/CDMA/3G etc., and utilizes wireless public network to have following many disadvantages and drawback:
The coverage rate of public network is limited, especially is difficult to cover the intensive transmission line of spy/superhigh pressure omnidistance, and is in service at transmission line, the high mountain high hill, uninhabited, do not have the weak area of signal or signal, more need to keep the unimpeded of communication.
Type service and data rate that public network provides are limited, because transmission bandwidth is restricted, need to and cut into fritter with the transmission information packing, send in batches.In the very little situation of single channel data acquisition amount, bandwidth can satisfy the demands, and according to collection and video etc., generally transmitting only resolution is not very high photo for the dense channels majority, tens of per minutes, the business that is difficult to satisfy the requirements such as the data such as data and video are instant, smoothness, high definition.
The fail safe of public network itself is lower, causes adopting the public network transmission means can't form System Resources Sharing by Intranet in intensive passway for transmitting electricity, and namely interactive mode and open degree are not high, and the information island ubiquity causes very big inconvenience to using the user in the net.
The public network chargeable service will cause O﹠M cost very high, increase the expense expenditure of run unit, bring obstacle for spread uses.
The network management difficulty in case system changes or breaks down, must be resolved through consultation with telecom operators, and the time of processing problem can't guarantee, thereby threatens the safe operation of electric power system.
Therefore, carry out the research of mixed networking technology in intensive passway for transmitting electricity in good time, to getting through the communication network on sliver road, improve the scientific and technological level of the intensive passway for transmitting electricity monitoring of intelligent grid, accumulation project technical experience, so profound significance had in promotion and implementation.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of robustness that strengthens communication network in order to overcome the defective that above-mentioned prior art exists, improved information data transmission speed, reduced the mixed networking system that is used for intensive passway for transmitting electricity of network service expense.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of mixed networking system for intensive passway for transmitting electricity, it is characterized in that, comprise the field network section that connects successively, telecommunication network section and data network section, the wireless closed-loop net that described field network section is comprised of OPGW optical fiber access point and wireless network access point, described OPGW optical fiber access point is located on the steel tower of Rendezvous Point, described wireless network access point is located on all steel towers, described telecommunication network section is the OPGW optical-fiber network, the aggregation node of this OPGW optical-fiber network is located in the two end transformer stations of transmission line, and described data network section is the special-purpose Intranet of power information.
Described wireless network access point is Wireless MESH access point or wireless WIFI access point.
Described field network section is operated in the ISM band of frequency 5.8GHz, and its access data bandwidth reaches 54Mb/s, and the relay portion frequency range is on 5.8GHz, and message transmission rate is 2～54Mb/s.
Adopt wideband digital wireless multi-hop transmission technology between the described OPGW optical fiber access point, when certain OPGW optical fiber access point fault, adjacent OPGW optical fiber access point can be identified and access to other OPGW optical fiber access point automatically.
Described telecommunication network section is connected with the data network section by router.
Described Wireless MESH access point adopts wireless MAC address filtering technology.
Compared with prior art, the present invention has the following advantages:
1) strengthened the robustness of communication network
Cover incomplete for the public wireless network signal, can only one-way transmission etc. many defectives, the mixed networking technology that the OPGW optical-fiber network that this technology adopts and wireless Mesh netword form has been avoided the signal covering problem, both self reach and have altogether formed each other 3 closed loop nets, and information data can realize transmitted in both directions, has greatly strengthened the safety and reliability of Internet Transmission.
2) improved information data transmission speed
For public wireless network transmission rate (the 3G transmission rate is generally hundreds of Kb, and 2G is just slower), transmits continuous clear video and still have problems.
Selected its FPDP exchange transmittability of Ethernet optical transceiver of this technology is 100Mb, optical channel transmittability (Gbps) after exchange and the tandem reaches 32Gb, press the transmission capacity of the maximum 54Mbps/ bar of wireless channel, can guarantee Radio Link tandem and transmission more than 50.So this technology allows the smooth transmission of video of high definition become reality.
3) reduced the network service expense
This technology in intensive circuit corridor, simplified apparatus, multipoint acquisition, concentration of transmissions.Improve safety and stability, system bandwidth is high, the real-time Transmission of multi-channel video becomes possibility to be compared with the public network communication mode, can reduce the communication cost expenditure, reduces maintenance, improves security of system.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is application structure schematic diagram of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
Such as Fig. 1, shown in Figure 2, a kind of mixed networking system for intensive passway for transmitting electricity, comprise the field network section 1 that connects successively, telecommunication network section 2 and data network section 3, the wireless closed-loop net that described field network section 1 is comprised of OPGW optical fiber access point 12 and wireless network access point 11, described OPGW optical fiber access point is located on the steel tower of Rendezvous Point, described wireless network access point is located on all steel towers, described telecommunication network section 2 is the OPGW optical-fiber network, the aggregation node of this OPGW optical-fiber network is located in the two end transformer stations of transmission line, and described data network section 3 is the special-purpose Intranet of power information.
Letter occupies very consequence in intensive passway for transmitting electricity, the various monitoring informations that collect on the dense channels can be sent to the data server of run unit by the means of communicating by letter to realize concentrating the function of monitoring; Yet in electrical network, do not have at present the monitoring system that a ready-made communication system can be directly used in intensive passway for transmitting electricity, therefore how correctly to utilize prior art, set up the communication network that connects the whole piece circuit and be very important.
At present, the above transmission line of nearly all 110kv has all set up extraordinary communications optical cable, is mainly built on stilts optical power grounded waveguide OPGW and All Dielectric self-support ADSS.From present actual operating position, the fibre core of a large amount of free time is arranged wherein.Therefore can utilize this exclusive resource of transmission line to make up the mixed networking communication technology that connects the whole piece circuit.
According to cable factory length standard and the actual erection features of OPGW, the ultimate range between two fiber optic closure is no more than 5 kilometers.At the overhead line structures place with fiber optic closure, as the AP access point, dense channels shaft tower for the non-fiber connector box, can adopt broadband wireless networking (MESH/WIFI) technology, the AP equipment of the related data transmission of this shaft tower to adjacent fiber splicing point place, enter Electricity Information Network by this point again, finish the real time on-line monitoring networking mode to shaft tower data at different levels and video.
System adopts the optical node Ethernet switch and jointly forms unified blended data transmission Ethernet with wideband wireless local area network at each optical fiber access point, land in transmission line two ends transformer station realization data in the optical communication net mode, and access each city/province/net monitoring center by the internal information net (or special-purpose VPN channel) of transformer station.Monitoring center links to each other with the interior higher level of net or other horizontal monitoring system by private network of electric power system, realizes data sharing.
The monitoring system of the intensive passway for transmitting electricity of mixed networking technique construction can cover the intensive passway for transmitting electricity circuit of whole piece.
The monitoring system of utilizing this technology to form relates to following three network segments altogether:
Field network section (wireless closed-loop net)
Adopt OPGW optical fiber and MESH wireless network mixed communication scheme.Radio network technique is followed IEEE802.11 series wireless LAN communication standard, field network is operated on the ISM band of frequency 5.8GHz, total access data bandwidth can reach 54Mb/s, the relay portion frequency range is on 5.8GHz, message transmission rate is 2～54Mb/s, general data terminal bandwidth 100kpbs, the video terminal allocated bandwidth is 3Mpbs.Adopt wideband digital wireless multi-hop transmission technology between the OPGW optical fiber access point, when certain OPGW optical fiber access point fault, adjacent OPGW optical fiber access point can be identified and access to other OPGW optical fiber access point automatically, do not affect the transfer of data of other shaft tower, therefore single itself is a closed loop net (being the wireless closed-loop net) with regard to wireless network, has improved the reliability of communication.
Telecommunication network section (fibre-optical closed-loop net)
Adopt OPGW optical network communication scheme, aggregation node is arranged on two end transformer stations of circuit, is converged with the data network access point by relaying to form.Can carry out normal data transfer by the optical cable of other direction when a direction Cable's Fault, not affect collection and the transmission (certain section fiber failure does not affect the optical-fiber network self-healing function of system monitoring) of other shaft tower data and video.So for optical network communication, itself also be to have consisted of a closed loop net (being the fibre-optical closed-loop net), strengthened the robustness of mixed networking system.
Data network section (optical fiber and wireless closed-loop net)
Stipulate according to the electric power secondary system security protection, adhere to the principle of security partitioning, network-specific, lateral isolation, vertical authentication, the various information datas of present technique transmission can be selected to land nearby from the two ends transformer station of intensive passway for transmitting electricity circuit, bring information data into corresponding management information Da Qu (such as I, II, III, IV etc.) according to the electric power relevant regulations.Various information datas are by the router access power information Intranet of circuit two end transformer stations, therefore wherein transformer station's fault of an end does not affect the transmission of whole piece circuit information data, therefore optical-fiber network and wireless network have also formed a closed loop net (being optical fiber and wireless closed-loop net) between the two in this technology, have realized the resource-sharing of various information datas.
" network storm " solution of problem
The network of present technique consists of, determine each intensive passway for transmitting electricity shaft tower and substation data land after with the physical connection mode of monitoring center, with reference to OSI Reference Model, network data communication employing hierarchical structured technology, the communication function of whole network is divided into 7 layers.By low layer to high level be respectively: physical layer, data link layer, network layer, transport layer, session layer, presentation layer, application layer.Every one deck has specific function, and the service that the function of one deck provides under the last layer utilization.
In OSI Reference Model, the data of each layer are not directly to deliver to the other end from the N layer of an end, but adopt the data from top to down in vertical level from the N layer successively to transmit until physical layer, two end points in physical layer carry out physical communication, and we call real communication to this communication.And peer layer is not directly to carry out owing to communication, thereby is called virtual communication.
In particular, be transferred to the simple data frame transfer mode of the data communication employing of local side from transformer station, being based on orlop is the transfer of data of physical layer, also is a kind of transmission means of point-to-point actual physics channel.And relevant leader to exchange with other leaders by local area network (LAN) in office be to be undertaken by virtual channel between two application layers.
Network storm is None-identified on this clear channel of physical layer, and solution is the second layer at OSI, and data link layer is solved.
Can find, the generation of all-network storm all is because data transmission channel has formed the closed loop of physical layer, has caused " short circuit " of transfer of data, causes hashes a large amount of in the passage to be piled up and blocks, and forms network paralysis.
The effect of data link layer is:
On the service basis that physical layer provides, data link layer is set up data link at communication entity and is connected; The packet of transmission take frame as unit; Adopt error control and flow control methods, make the physical circuit of mistake become the data link of zero defect.In this aspect identification and control data transmission path, the closed loop of cutting off in the transfer of data is formation and the harm that can solve network storm.
International IEEE (Institute of Electrical and Electronics Engineers) tissue has proposed concrete solution, network communication protocol is crossed by closed loop Netcom transform tree network as to the core of measure exactly, i.e. " the Spanning-Tree Protocol IEEE 802.1X " of network (STP) (X=1, Q).But the cut-out that this transformation forms is soft kill, and when the closed loop path fault occurring, consultation with the link healing that disconnects, guarantees the unimpeded of data link automatically.
Spanning-Tree Protocol (STP) is a kind of second layer management agreement, and it reaches the purpose of eliminating the network double-layer loop by blocking selectively Network the Redundancy Link the redundancy, possesses simultaneously the backup functionality of link.
Spanning-Tree Protocol is the same with other agreements, is to constantly update the replacement along with the development of network." Spanning-Tree Protocol " is the concept of a broad sense, be not to refer in particular to the STP agreement that defines among the IEEE 802.1D, but comprise STP and various on the STP basis through the Spanning-Tree Protocol of having improved.
The network switch that accesses after power transformation is landed for data and the network switch of monitoring center are all with the STP agreement, and the data after guaranteeing to land can't form " network broadcasting windstorm " in internal lan.
Form " network broadcasting windstorm " for fear of the access owing to wireless device between the optical fiber splice box, Ethernet optical switch, broadband wireless access equipment in the present technique all have the STP protocol package, namely effectively avoid network storm, guarantee again the interval redundancy backup data channel that forms of each optical fiber splice box.
Present technique has been passed through the checking of actual items, has realized in the design as mentioned above, has effectively avoided the generation of " network broadcasting windstorm ".
Transmission channel quality is high, and namely channel bit error rate is low
For the OPGW of main line system channel, its transmission medium is not vulnerable to external interference, steady signal transmission, and channel bit error rate is better than 1 * 10-9, and the impact of transmission quality can not considered.
For guaranteeing transmission quality, the selected broadband wireless equipment of present technique adopts direct sequence spread spectrum skill.
Direct sequence spread spectrum DSSS (Direct Sequence Spread Spectrum) equipment is followed the IEEE802.11 standard manufacture, directly to utilize the spreading code series with high code check to adopt various modulation systems at the frequency spectrum of spread signal of making a start, and in receiving end, go to decode with identical spread spectrum code sequence, the wide spread-spectrum signal of expansion is reduced into original information.
Direct sequence spread spectrum (DSSS) technology great advantage is strong interference immunity.Anti-interference is one of spread spectrum communication key property, is 100 times such as the signal spread-spectrum width, and the arrowband disturbs basically inoperative, and the strength decreased of broad-band interference 100 times, as keeping former interference strength, then need strengthen 100 times of gross powers, this is difficult in fact realize.Because receiving, signal need the spread spectrum coding despreading of be correlated with to process and just can obtain, so even disturb with signal of the same type, in the situation of the spreading code of not knowing signal, owing to the different correlation between the different spread spectrum codings, disturb inoperative.Because DSSS, it is widely used in solves that the interference that modern WLAN runs into is large, the transmission problem of short distance, super bandwidth.Therefore with respect to the transfer of data of public wireless network, the transmission channel quality of this technology is high, and the advantage that namely channel bit error rate is low is apparent.
The bandwidth of transmission channel
Selected its FPDP exchange transmittability of Ethernet optical transceiver of this technology is 100Mb, optical channel transmittability (Gbps) after exchange and the tandem reaches 32Gb, press the transmission capacity of the maximum 54Mbps/ bar of wireless channel, can guarantee Radio Link tandem and transmission more than 50.So there is not any problem in transmission of video in the optical fiber switch net, can transmit at any time the video of continuous high definition.
Single-hop (point-to-point) the bandwidth digit rate of selected wideband digital wireless device is: 54Mbps, and every increase by is jumped, and its bandwidth descends by 2 power.Wireless device jumping 3～4 is jumped and is not had any problem in actual items is used.
Such transmission rate all is too far behind to catch up for public wireless network (2G or 3G).
The fail safe of information data transmission
The network system of access after each transformer station is power private network in whole technology, and optical fiber ring network also is the part of power private network, with the external world be physically-isolated.The weak spot of system data fail safe is between the Wireless MESH network link, has adopted two safeguard measures for this technology of this problem:
First: the wireless MAC address filtering.Wireless MESH equipment is supported this function.Each network equipment no matter be wired or wireless, has a unique sign to be called MAC Address (media access control address).These addresses generally are illustrated on the network equipment, enabling wireless mac address filter function arranges and only allows (Permit only) option, edit-modify MAC filter list, the MAC Address of the network interface card of the machine that allows accesses network is added in this table, and fail safe obtains very large assurance.
Second: WEP wired equivalent privacy (Wired Equivalent Privacy, WEP) is a data security system of protection wireless network (Wi-Fi).The design of WEP is will provide and traditional wired suitable confidentiality in local networking, and name according to this.In the Wireless MESH wireless router, in general 128 of the figure places that selection is encrypted can satisfy common security needs.
Claims (6)
1. mixed networking system that is used for intensive passway for transmitting electricity, it is characterized in that, comprise the field network section that connects successively, telecommunication network section and data network section, the wireless closed-loop net that described field network section is comprised of OPGW optical fiber access point and wireless network access point, described OPGW optical fiber access point is located on the steel tower of Rendezvous Point, described wireless network access point is located on all steel towers, described telecommunication network section is the OPGW optical-fiber network, the aggregation node of this OPGW optical-fiber network is located in the two end transformer stations of transmission line, and described data network section is the special-purpose Intranet of power information.
2. a kind of mixed networking system for intensive passway for transmitting electricity according to claim 1 is characterized in that, described wireless network access point is Wireless MESH access point or wireless WIFI access point.
3. a kind of mixed networking system for intensive passway for transmitting electricity according to claim 2, it is characterized in that, described field network section is operated in the ISM band of frequency 5.8GHz, its access data bandwidth reaches 54Mb/s, the relay portion frequency range is on 5.8GHz, and message transmission rate is 2～54Mb/s.
4. a kind of mixed networking system for intensive passway for transmitting electricity according to claim 3, it is characterized in that, adopt wideband digital wireless multi-hop transmission technology between the described OPGW optical fiber access point, when certain OPGW optical fiber access point fault, adjacent OPGW optical fiber access point can be identified and access to other OPGW optical fiber access point automatically.
5. a kind of mixed networking system for intensive passway for transmitting electricity according to claim 1 is characterized in that, described telecommunication network section is connected with the data network section by router.
6. a kind of mixed networking system for intensive passway for transmitting electricity according to claim 2 is characterized in that, described Wireless MESH access point adopts wireless MAC address filtering technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328250.9A CN102868452B (en) | 2012-09-06 | 2012-09-06 | A kind of mixed networking system for dense transmission channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328250.9A CN102868452B (en) | 2012-09-06 | 2012-09-06 | A kind of mixed networking system for dense transmission channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102868452A true CN102868452A (en) | 2013-01-09 |
| CN102868452B CN102868452B (en) | 2015-11-25 |
Family
ID=47447080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210328250.9A Active CN102868452B (en) | 2012-09-06 | 2012-09-06 | A kind of mixed networking system for dense transmission channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102868452B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178903A (en) * | 2013-03-20 | 2013-06-26 | 千江（上海）信息科技有限公司 | Power emergency communication system based on wireless optical networks |
| CN103178902A (en) * | 2013-03-13 | 2013-06-26 | 千江（上海）信息科技有限公司 | Electric transmission line monitoring communication system based on super-distance wireless optical network |
| CN103475419A (en) * | 2013-09-06 | 2013-12-25 | 广东电网公司江门供电局 | Optical fiber communication system used for power transmission line online patrol |
| CN105262650A (en) * | 2015-07-24 | 2016-01-20 | 国家电网公司 | Power transmission and transformation field hybrid communication system |
| CN105722144A (en) * | 2016-01-28 | 2016-06-29 | 中国电力科学研究院 | Communication method and system of power transmission line online monitoring data |
| CN107517150A (en) * | 2016-06-17 | 2017-12-26 | 深圳市信锐网科技术有限公司 | Intranet resource access method and device based on VPN VPN |
| CN110189012A (en) * | 2019-05-23 | 2019-08-30 | 国电南瑞科技股份有限公司 | The dense transmission channel automatic identifying method and system of adaptive natural hazards risk |
| WO2020051522A1 (en) * | 2018-09-06 | 2020-03-12 | Kevin Ross | Systems and methods for building wireless mesh networks |
| CN116566479A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103276A1 (en) * | 2005-03-31 | 2006-10-05 | Siemens Aktiengesellschaft | An access method for a multi-hop wireless network |
| CN101222325A (en) * | 2008-01-23 | 2008-07-16 | 西安西电捷通无线网络通信有限公司 | Wireless multi-hop network key management method based on ID |
| US20080298809A1 (en) * | 2007-05-31 | 2008-12-04 | Huawei Technologies Co., Ltd. | Digital Subscriber Line Access Multiplexer, Optical Network Unit, Optical Line Terminal And Base Station |
| CN101547452A (en) * | 2008-03-27 | 2009-09-30 | 富士通株式会社 | Wireless communication systems |
| CN101577954A (en) * | 2009-04-30 | 2009-11-11 | 南京正保通信网络技术有限公司 | Wireless multi-hop ad hoc network communication method |
| US20100091669A1 (en) * | 2007-03-01 | 2010-04-15 | Thomson Licensing | Method to select access point and relay node in multi-hop wireless networking |
| CN201726403U (en) * | 2010-07-21 | 2011-01-26 | 华北电网有限公司 | Transmission line condition monitoring data transmission system framework |
| CN202334567U (en) * | 2011-11-22 | 2012-07-11 | 国网信息通信有限公司 | Intelligent household electrical apparatus control system |
| CN102572907A (en) * | 2012-01-21 | 2012-07-11 | 重庆大学 | Wireless communication mode of industrial information corridor |
| CN202818341U (en) * | 2012-09-06 | 2013-03-20 | 上海欣影电力科技发展有限公司 | Hybrid networking system used for intensive power transmission channel |
-
2012
- 2012-09-06 CN CN201210328250.9A patent/CN102868452B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103276A1 (en) * | 2005-03-31 | 2006-10-05 | Siemens Aktiengesellschaft | An access method for a multi-hop wireless network |
| US20100091669A1 (en) * | 2007-03-01 | 2010-04-15 | Thomson Licensing | Method to select access point and relay node in multi-hop wireless networking |
| US20080298809A1 (en) * | 2007-05-31 | 2008-12-04 | Huawei Technologies Co., Ltd. | Digital Subscriber Line Access Multiplexer, Optical Network Unit, Optical Line Terminal And Base Station |
| CN101222325A (en) * | 2008-01-23 | 2008-07-16 | 西安西电捷通无线网络通信有限公司 | Wireless multi-hop network key management method based on ID |
| CN101547452A (en) * | 2008-03-27 | 2009-09-30 | 富士通株式会社 | Wireless communication systems |
| CN101577954A (en) * | 2009-04-30 | 2009-11-11 | 南京正保通信网络技术有限公司 | Wireless multi-hop ad hoc network communication method |
| CN201726403U (en) * | 2010-07-21 | 2011-01-26 | 华北电网有限公司 | Transmission line condition monitoring data transmission system framework |
| CN202334567U (en) * | 2011-11-22 | 2012-07-11 | 国网信息通信有限公司 | Intelligent household electrical apparatus control system |
| CN102572907A (en) * | 2012-01-21 | 2012-07-11 | 重庆大学 | Wireless communication mode of industrial information corridor |
| CN202818341U (en) * | 2012-09-06 | 2013-03-20 | 上海欣影电力科技发展有限公司 | Hybrid networking system used for intensive power transmission channel |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178902A (en) * | 2013-03-13 | 2013-06-26 | 千江（上海）信息科技有限公司 | Electric transmission line monitoring communication system based on super-distance wireless optical network |
| CN103178903A (en) * | 2013-03-20 | 2013-06-26 | 千江（上海）信息科技有限公司 | Power emergency communication system based on wireless optical networks |
| CN103475419A (en) * | 2013-09-06 | 2013-12-25 | 广东电网公司江门供电局 | Optical fiber communication system used for power transmission line online patrol |
| CN103475419B (en) * | 2013-09-06 | 2015-12-09 | 广东电网公司江门供电局 | A kind of optical fiber telecommunications system of making an inspection tour online for transmission line |
| CN105262650A (en) * | 2015-07-24 | 2016-01-20 | 国家电网公司 | Power transmission and transformation field hybrid communication system |
| CN105722144B (en) * | 2016-01-28 | 2021-10-01 | 中国电力科学研究院 | Communication method and system for on-line monitoring data of power transmission line |
| CN105722144A (en) * | 2016-01-28 | 2016-06-29 | 中国电力科学研究院 | Communication method and system of power transmission line online monitoring data |
| CN107517150A (en) * | 2016-06-17 | 2017-12-26 | 深圳市信锐网科技术有限公司 | Intranet resource access method and device based on VPN VPN |
| CN107517150B (en) * | 2016-06-17 | 2020-08-04 | 深圳市信锐网科技术有限公司 | Intranet resource access method and device based on virtual private network VPN |
| WO2020051522A1 (en) * | 2018-09-06 | 2020-03-12 | Kevin Ross | Systems and methods for building wireless mesh networks |
| US10951513B2 (en) | 2018-09-06 | 2021-03-16 | Kevin Ross | Systems and methods for building wireless mesh networks |
| US11258697B2 (en) | 2018-09-06 | 2022-02-22 | L3Vel, Llc | Systems and methods for building wireless mesh networks |
| US11431612B2 (en) | 2018-09-06 | 2022-08-30 | L3Vel, Llc | Systems and methods for building wireless mesh networks |
| US11683259B2 (en) | 2018-09-06 | 2023-06-20 | L3Vel, Llc | Systems and methods for building wireless mesh networks |
| CN110189012A (en) * | 2019-05-23 | 2019-08-30 | 国电南瑞科技股份有限公司 | The dense transmission channel automatic identifying method and system of adaptive natural hazards risk |
| CN110189012B (en) * | 2019-05-23 | 2021-07-13 | 国电南瑞科技股份有限公司 | Dense power transmission channel automatic identification method and system adaptive to natural disaster type |
| CN116566479A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
| CN116566479B (en) * | 2023-07-10 | 2023-12-01 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102868452B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102868452B (en) | A kind of mixed networking system for dense transmission channel | |
| CN104243595B (en) | A kind of power information acquisition system and its method based on IPv6 | |
| CN106787163A (en) | A kind of centralized configuration and long distance control system for substation network communication device | |
| CN110557758A (en) | Power system communication network deployment processing method and device | |
| CN206559565U (en) | Terminal communication access network EPON ring-shaped network structures | |
| CN111107141A (en) | Electric power wireless private network system based on LTE230MHz | |
| CN209267591U (en) | The communication system of substation | |
| CN210444305U (en) | Wireless private network system | |
| CN106060840B (en) | WIFI covering method that express highway all-way is wireless | |
| CN107483436A (en) | A kind of physical layer dual-mode design method of communication module in Internet of Things | |
| CN107682181A (en) | A kind of PTN towards the business of adapted electric industry carries polymorphic wireless networking method | |
| CN104080095A (en) | Method for networking wireless 3G/LTE base station carrying network in subway stations | |
| CN201726403U (en) | Transmission line condition monitoring data transmission system framework | |
| CN106102074A (en) | Express highway all-way is wireless WIFI covering system | |
| CN110401971A (en) | A kind of communication means based on the proprietary frequency range intelligence ad hoc network of 230MHz electric power | |
| CN202818341U (en) | Hybrid networking system used for intensive power transmission channel | |
| CN104902351B (en) | A kind of transformer station process layer optical fiber multiple wavelength isolation constructing communication network method | |
| CN109905884A (en) | Indoor covering system | |
| CN209088970U (en) | A kind of novel Optical Channel Protection system based on OASS | |
| CN110391985A (en) | A kind of power information acquisition monitoring system | |
| CN214901323U (en) | Wireless communication system in overlength high voltage power piping lane | |
| CN210958570U (en) | Remote monitoring system based on hybrid network | |
| CN209402740U (en) | Wireless self-networking terminal | |
| CN209218138U (en) | It is a kind of wirelessly to match electricity automation information acquisition system | |
| CN105262650A (en) | Power transmission and transformation field hybrid communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |