CN102006650A - Method for realizing wireless sparse routing for state monitoring of power transmission line - Google Patents
Method for realizing wireless sparse routing for state monitoring of power transmission line Download PDFInfo
- Publication number
- CN102006650A CN102006650A CN2010105708032A CN201010570803A CN102006650A CN 102006650 A CN102006650 A CN 102006650A CN 2010105708032 A CN2010105708032 A CN 2010105708032A CN 201010570803 A CN201010570803 A CN 201010570803A CN 102006650 A CN102006650 A CN 102006650A
- Authority
- CN
- China
- Prior art keywords
- substation
- data
- base station
- transmission line
- wireless
- 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.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a method for realizing wireless sparse routing for state monitoring of a power transmission line, comprising the steps of: (1) sending data to a base station by a substation; and (2) sending an instruction to the substation by the base station; wherein the substation only deals with corresponding OFDM (Orthogonal Frequency Division Multiplexing) symbol slots and forwards subsequent symbol slots to the next substation, and the control information (FCH (Forward Channel) and DLMAP (Downlink Mapping)) of an OFDM downlink subframe is sent to the next substation along with the data. The invention can realize the establishment of a wireless communication private network for the sate monitoring of the power transmission line, has the advantages of low cost and wide coverage range, can provide higher bandwidth and data transmission rate and effectively solve the problem of transmission bottleneck of the chain wireless communication network of the power transmission line, and is suitable for the remote wireless transmission of the state monitoring communication of the power transmission line.
Description
Technical field
The present invention relates to a kind of wireless routing algorithm, particularly relate to a kind of implementation method that is used for the sparse route of transmission line state monitoring wireless, be applicable to the automation control of industries such as electric power, traffic, the energy, belong to wireless communication technology, power system automation technology field.
Background technology
The transmission line status monitoring is the important means that realizes intelligent power transmission and distribution, is the important step of building intelligent grid.It can improve the fail safe and the reliability of system, strengthens real-time monitoring and control to electrical network, reduces failure-frequency, improves the utilization ratio of power transmission and distribution assets.Realize that transmission line status monitoring key is to solve the real time communication of various Monitoring Data information, need set up a communication private network, finish the collection and the real-time Transmission of data, set up complete monitoring, analysis and control system simultaneously at transmission line.
It is wide that ultra-high-tension power transmission line relates generally to scope, geographical conditions are various, the monitoring communication point is positioned on the shaft tower of transmission line, therefore utilize the cable resource on the shaft tower, adopt the OFDM+MIMO technology to set up the private network of communicating by letter with WiFi wireless communication technology mode, can provide and grow distance covering and good system extension general, more more efficient than wired mode.
Wireless Mesh netword based on the WIFI technology is also referred to as " multi-hop (multi-hop) " network, and structure is generally mesh network, is a kind of city, large tracts of land open zone wireless network solution of (comprising outdoor and indoor) that is very suitable for covering.Its characteristics are by comprising that one group of WAP (wireless access point) (AP) that is net distribution constitutes, and AP all adopts point-to-point mode interconnected by wireless relay links, and wireless " focus " among traditional WLAN expanded to wireless " hot-zone " that real large tracts of land covers.
Traditional wireless network based on the WIFI technology can not be applicable to sets up transmission line status monitoring communication private network, and its reason is:
At first, short based on each short transmission range of jumping of wireless Mesh netword of WIFI technology, transmission data desired power is also less.Since multihop network uses lower-wattage with the node of transfer of data to vicinity usually, the wireless signal between the node disturbs also less, and the channel quality and the channel transport efficiency of network improve greatly, thereby can realize higher network capacity.Such as in highdensity urban network environment, the Mesh network can reduce the phase mutual interference of the neighboring user of using wireless network, improves the utilization ratio of channel greatly.And the distance between the node is long in the transmission line, density is little, is wire and distributes, and is not suitable for setting up traditional Mesh network.
Secondly, Wireless Mesh equipment is to adopt the mode of multistage relaying to carry out transfer of data owing to having used multi-hop function, its essence.Therefore, the speed of its transfer of data and performance will be had a greatly reduced quality, and when big data quantity information such as transmission of video, its real-time and availability all can not get effective guarantee.Because weather conditions such as the speed of wireless transmission depends on the situation of wireless channel to a great extent, the sleet thunder and lightning and external electromagnetic environment all can impact the transmission rate of equipment.Therefore, the transmission rate of wireless network is unsettled, has caused the low of whole network service quality.
Once more, if adopt the networking of full Mesh scheme, it is not to constitute a netted network in fact that the level of Mesh network is associated on the transmission line, but the network of a chain, and route has only one.Its reason is that the covering power of Wireless Mesh equipment can only reach its adjacent equipment, and can not cover more.This just makes that the chain wireless-transmission network of this Mesh is fragile completely, in case certain node failure, its link will rupture.Because 100km just needs 50 equipment, number of devices is too much, and the probability of its Single Point of Faliure is just big more.
At last, the Mesh network is the network of a multi-hop, but the progression that jumps is conditional, and most of Mesh equipment are all only supported tens jumpings.In other words, the Mesh network can only carry out relay transmission tens times, and relay transmission can not realize more frequently.The increase of Mesh network hop number of times can bring the complicated of system design, the route telogenesis geometric growth of the required maintenance of each node, and number of skips too much can be brought the decline of systematic function in addition.
Therefore, need a kind of brand-new wireless sparse method for routing that is used for the transmission line status monitoring of research to set up chain radio communication private network, realize the status monitoring of transmission line.
Summary of the invention
1, goal of the invention
One of purpose of the present invention is the implementation method that is to invent the sparse route of a kind of transmission line state monitoring wireless, sets up the radio communication private network of chain, solves the status monitoring communication network problem that the transmission line scope is wide, communication point is loose.
2, technical scheme
The implementation method of the sparse route of a kind of transmission line state monitoring wireless may further comprise the steps:
1) substation is specially to the step of the transmission data of base station, when data are uploaded to the base station in the substation, each substation data flow is transmitted in a certain order; During transmission, the sequence of OFDM symbol slot is corresponding with the sequence that will transmit the data substation, and the data flow of forming the time-division is transmitted;
2) base station is specially to the step of the move instruction of substation, and the base station is when the move instruction of substation, and is according to the transmission order of different substations, that the sequence of OFDM symbol slot is corresponding with the sequence of substation;
Wherein, own pairing OFDM symbol slot is only handled in the substation, and follow-up symbol slot is forwarded to next substation, the control information of OFDM descending sub frame (FCH﹠amp; DLMAP) also along with data are sent to next substation.
The base station is a data processing node, is responsible for the data of gathering are carried out real-time or non real-time processing.Each substation is deployed on the electric power line pole tower.
3, beneficial effect
Utilize the present invention can realize building the radio communication private network that is used for the transmission line status monitoring, little, the wide coverage of cost, higher bandwidth and data transmission rate can be provided, effectively solve the transmission bottleneck problem of transmission line chain cordless communication network, be applicable to the remote-wireless transmission of the status monitoring communication of transmission line.
Description of drawings
Fig. 1 is based on the cordless communication network of OFDM+MIMO and the establishment of WiFi technology.
Fig. 2 is data flow and instruction stream schematic diagram.
Fig. 3 is that CPE transmits data to transformer station.
Fig. 4 is that transformer station is to the CPE move instruction.
Fig. 5 is the case study on implementation network diagram.
Fig. 6 is the data flow that wireless senser sends to the substation.
Fig. 7 is the data flow that substation and base station are built.
Embodiment
(1) general introduction
Adopt the OFDM+MIMO technology to combine and make up power transmission line state monitoring wireless data transmission system, have two-layer mixed networking structure with the WiFi wireless communication technology.Promptly by OFDM+MIMO be the wireless backbone layer formed of key technology and based on WiFi(promptly 802.11) the local Access Layer formed forms, shown in 1.Adopt the backbone layer of OFDM+MIMO technology to be responsible for a plurality of WiFi substation (or calling local input field) is communicated to the radio communication base station that is positioned at transformer station, the distance between the base station is about 100～300 kilometers; Local Access Layer is used to compile and handles the transducer that is positioned on each shaft tower or the measurement data of collector, and delivers to backbone layer and be transferred to the base station, and the distance between the base station is about about 4 kilometers.
And wireless sparse group of routes fidonetFido is to be used for respectively communicate by letter a kind of network layer protocol of the transmission of data wireless between substation and base station of transmission line along the line, its main task is that the packet of managing in the wireless network of an approximate chain source node to be gone out is sent to the purpose node, thereby provides the most basic data delivery service end to end to transport layer.
(2) basic principle
Power transmission line state monitoring wireless communication system is formed with the base station that is positioned at transformer station by being positioned at each substation along the line.
The substation group is mainly finished following function:
1) WiFi transceiver: finish with the data transmission of wireless senser and the forwarding of control command.
2) OFDM+MIMO repeater: finish and transmit with the communication of other substations or base station and data.
3) WiFi-(OFDM+MIMO) bridge: finish the conversion of bidirectional protocol between WiFi and the OFDM+MIMO and the conversion of frame format.
4) storage: temporary various Monitoring Data.
Main website mainly finishes following function:
1) data processing: finish the processing of each substation being converged data.
2) transmit: data are sent to main website according to certain communication protocol.
The substation is divided into data flow and two kinds of forms of instruction stream with communicating by letter of base station.Is instruction stream by the base station to the substation direction, is used to transmit the control command of monitoring main website to each monitoring point monitoring equipment; Is data flow by the substation to the base station direction, and promptly the control command according to the monitoring main website is sent to the base station with required Monitoring Data, and then uploads to the monitoring main website by network.Data flow and instruction stream schematic diagram are as shown in Figure 2.
(3) data transferring method (method for routing)
Generally speaking, the actual effective coverage range of a base station only is several kilometers.For the present invention is to be relaying with each substation, adopts certain data transferring method, signal can be sent to remote outer base station by the mode of multi-hop, thereby expand the coverage of base station.
1) substation is to the transmission data method of base station
When data are uploaded to the base station in the substation, adopt similar time-multiplexed method, each substation data flow is transmitted in a certain order.During transmission, the sequence of OFDM symbol slot is corresponding with the sequence that will transmit the data substation, and the data flow of forming the time-division is transmitted.As shown in Figure 3.
2) base station is to the move instruction method of substation
The base station is when the move instruction of substation, and is according to the transmission order of different substations, that the sequence of OFDM symbol slot is corresponding with the sequence of substation.As shown in Figure 4.
Own pairing OFDM symbol slot is only handled in the substation, and follow-up symbol slot is forwarded to next substation.Simultaneously, the control information (FCH﹠amp of OFDM descending sub frame; DLMAP) also along with data are sent to next substation.
The invention will be further described below in conjunction with case study on implementation.
Adopt the base station system of OFDM+MIMO technology to be deployed in the transformer station, be separated by 100 ~ 300 kilometers between two transformer stations, the base station is a data processing node, is responsible for the data of gathering are carried out real-time or non real-time processing.Each substation is deployed on the electric power line pole tower, has covered the wireless senser in the radius 2 kilometers.The wireless backbone transport of OFDM+MIMO has been born in the substation when data uplink, born the forwarding task of OFDM+MIMO to local WiFi wireless network when descending.Wireless senser is gathered routine datas such as video data or wind-force, adopts ripe WiFi network interface card, and by the data transmit-receive between realization of 802.11g agreement and the substation, network structure as shown in Figure 5.
Each substation covers the scope of 2 kilometers radiuses, the data (shown in horizontal line among Fig. 6) that acceptance is gathered from a plurality of wireless sensers along the line, and will send to the wireless senser (opposite) that is covered from the control data of base station with direction shown in the horizontal line among Fig. 6.And the data transmit-receive between the wireless senser is realized by the 802.11g agreement.Each substation can adopt bidirectional oriented antenna to increase transmitting gain towards the antenna of covering wireless senser.
Data flow between base station and the substation is shown in horizontal line among Fig. 7.Data that a plurality of wireless sensers that covered are gathered in the substation and data fusion from one-sided adjacent substations, adopt wireless sparse Routing Protocol, give the adjacent substation of opposite side with the data passes after merging, finally converge to the base station, send to the radio base band server; Equally, the control data that sends from the radio base band server of base station also hands on (opposite with direction shown in the horizontal line among Fig. 7) by the substation.Distance between adjacent two base stations is 4 kilometers, adopts the broadband wireless transmission technology based on OFDM+MIMO to realize data transmit-receive.
If it is 2Mbps that overall transmission rate is provided on the whole link, then average each substation can provide the transmission rate of about 150kbps.The processing delay of each substation is about 10 ~ 20 milliseconds, and per 4 kilometers transmission delay is 0.13 microsecond, and the requirement of transmission line status monitoring to communication can be satisfied in delay＜0.5 of packet from distal-most end wireless double mode CPE to the radio base band server second.
Claims (2)
1. the implementation method of the sparse route of transmission line state monitoring wireless is characterized in that, may further comprise the steps:
1) substation is specially to the step of the transmission data of base station, when data are uploaded to the base station in the substation, each substation data flow is transmitted in a certain order; During transmission, the sequence of OFDM symbol slot is corresponding with the sequence that will transmit the data substation, and the data flow of forming the time-division is transmitted;
2) base station is specially to the step of the move instruction of substation, and the base station is when the move instruction of substation, and is according to the transmission order of different substations, that the sequence of OFDM symbol slot is corresponding with the sequence of substation;
Wherein, own pairing OFDM symbol slot is only handled in the substation, and follow-up symbol slot is forwarded to next substation, the control information of OFDM descending sub frame (FCH﹠amp; DLMAP) also along with data are sent to next substation.
2. the implementation method of the sparse route of a kind of transmission line state monitoring wireless according to claim 1 is characterized in that the base station is a data processing node, is responsible for the data of gathering are carried out real-time or non real-time processing.Each substation is deployed on the electric power line pole tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105708032A CN102006650A (en) | 2010-12-02 | 2010-12-02 | Method for realizing wireless sparse routing for state monitoring of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105708032A CN102006650A (en) | 2010-12-02 | 2010-12-02 | Method for realizing wireless sparse routing for state monitoring of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102006650A true CN102006650A (en) | 2011-04-06 |
Family
ID=43813619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105708032A Pending CN102006650A (en) | 2010-12-02 | 2010-12-02 | Method for realizing wireless sparse routing for state monitoring of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102006650A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1838577A (en) * | 2005-03-25 | 2006-09-27 | 中国科学技术大学 | Frame division multi-address method in mobile communication |
| CN101064555A (en) * | 2006-04-29 | 2007-10-31 | 上海贝尔阿尔卡特股份有限公司 | Frame structure, frame processing method and equipment and system for multi-hop access network |
| US20080225774A1 (en) * | 2007-03-13 | 2008-09-18 | Nec Laboratories America, Inc. | Optimal resource allocation in a multi-hop ofdma wireless network with cooperative relaying |
| CN101841363A (en) * | 2009-03-18 | 2010-09-22 | 中兴通讯股份有限公司 | Transmission method and system for relay link control channel |
-
2010
- 2010-12-02 CN CN2010105708032A patent/CN102006650A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1838577A (en) * | 2005-03-25 | 2006-09-27 | 中国科学技术大学 | Frame division multi-address method in mobile communication |
| CN101064555A (en) * | 2006-04-29 | 2007-10-31 | 上海贝尔阿尔卡特股份有限公司 | Frame structure, frame processing method and equipment and system for multi-hop access network |
| US20080225774A1 (en) * | 2007-03-13 | 2008-09-18 | Nec Laboratories America, Inc. | Optimal resource allocation in a multi-hop ofdma wireless network with cooperative relaying |
| CN101841363A (en) * | 2009-03-18 | 2010-09-22 | 中兴通讯股份有限公司 | Transmission method and system for relay link control channel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103763744B (en) | D2D communication transmission modes changing method between cellular cell | |
| CN104507144B (en) | Wireless take can junction network joint relay selection and resource allocation methods | |
| CN104284407B (en) | Poewr control method based on full duplex relaying in the cellular network of embedded D2D | |
| US10687228B2 (en) | Data aggregation for distributed optimization of a wireless network | |
| CN102446403B (en) | Novel power utilization information collection system based on TD-LTE (time division-long term evolution) wireless broadband | |
| CN101248691A (en) | Method for controlling the access to a TDMA wireless channel from nodes of a network of either linear or tree topology | |
| CN101983535A (en) | Method for routing via access terminals | |
| CN108494824A (en) | A kind of network architecture and network-building method for Internet of Things | |
| CN102724014B (en) | A kind of tree network multi-hop wireless communication system wireless frame length self-adapting regulation method and device | |
| CN102638872A (en) | Relay selection method based on load balancing in cooperation relay network | |
| CN103067977B (en) | Data concurrence transmission method based on cross-layer optimization in wireless heterogeneous network system | |
| US10674399B2 (en) | Clustered synchronization within a distance-vector wireless network | |
| CN105357731A (en) | Energy-efficient wireless sensor network (WSN) routing protocol design method for use in electromagnetic interference environment | |
| CN101808422B (en) | Zigbee cellular network | |
| JP5431418B2 (en) | Wireless communication system and wireless communication method | |
| CN104579427A (en) | Power wireless communication system and communication method | |
| CN105049356B (en) | Monitor the data multihop routing acquisition method based on QoS in network | |
| CN102761955B (en) | A kind of data transfer control method of multi-hop wireless network | |
| CN102761883B (en) | Multi-hop broadband wireless communication system and wireless node device thereof | |
| CN102396258A (en) | Method and network device for managing resource allocation | |
| CN109561470A (en) | A kind of collaboration method of network code and edge cache in chain type communication network | |
| Yusoff et al. | Performance analysis of transparent and non-transparent relays in MMR WiMAX networks | |
| CN103298060B (en) | Wireless mesh network via node method for arranging centered by content | |
| CN206993420U (en) | Water conservancy wireless network monitoring system | |
| CN102006650A (en) | Method for realizing wireless sparse routing for state monitoring of power transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110406 |