CN104410713A - Monitoring system and monitoring method for state of cable outer sheath based on DigiMesh network - Google Patents
Monitoring system and monitoring method for state of cable outer sheath based on DigiMesh network Download PDFInfo
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- CN104410713A CN104410713A CN201410782198.3A CN201410782198A CN104410713A CN 104410713 A CN104410713 A CN 104410713A CN 201410782198 A CN201410782198 A CN 201410782198A CN 104410713 A CN104410713 A CN 104410713A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to a monitoring system and monitoring method for the state of a cable outer sheath based on a DigiMesh network. The collection of the state information of an outer sheath of a power cable and a DigiMesh communication technology are combined, and data is transmitted back in a multi-hopping manner. According to the invention, a data collector measures the state data of the cable in real time, data transmission is performed through an internet of things, the system and the method disclosed by the invention have the characteristics of high efficiency, high reliability and ultra-low power consumption, at the same time, the system and the method have stronger capacity for withstanding disaster crisis communication, monitoring conditions can be timely transmitted to a central server which disposes data, and the state of the outer sheath of the cable is judged according to the disposed data. The system and the method have important and actual significance for timely inspecting and repairing the power cable and reducing potential safety hazards existing in lines.
Description
Technical field
The present invention relates to system for distribution network of power administrative skill field, particularly cable jacket condition monitoring system and method.
Background technology
The direction that intelligent grid is built as power system development, requires to monitor, to overhaul in time the real-time status of all devices in system.Power cable is one of most important part in electric power system, and for transmission and distribution electric energy, facts have proved, a lot of cable fault is all broken down by cable jacket to cause, and cable is once break down, and may produce heavy losses.At present, power cable state data acquisition technology part realizes, and applies to a certain extent, but how effectively solution Real-Time Monitoring power cable oversheath state and status data transfers are never really solved.How this problem sets up high reliability, low-power consumption, low cost if embodying a concentrated reflection of, the Power Line Communication system that flexibility ratio is high realizes the wireless transmission of information.
Current power cable state Monitoring Data transmission mainly contains two kinds of modes, i.e. general packet radio service (GPRS, generalpacket radio service) and wireless sensor network (WSN, wireless sensor network).GPRS monitoring system needs the communication service of renting telecommunication department for a long time, and costly, data transfer bandwidth is limited, and there is potential data information security problem.WSN technology is the popular domain of wireless network research, and in recent years, WSN obtains the ZigBee radio sensing network mainly based on IEEE 802.15.4 standard of practical application.ZigBee-network is a kind of low complex degree, low-power consumption, the radio network technique of low cost, but transmission range between ZigBee-network interior joint is limited, and need when transmission range expands to hundreds of rice to increase power amplifier, the power consumption of communication equipment also can correspondingly increase.
Summary of the invention
One object of the present invention is just to provide a kind of cable jacket condition monitoring system based on DigiMesh network, and it can improve the flexibility of communication system, promptness and reliability, reduces costs, and reduces blindness.
The object of the invention is by such technical scheme realize, it includes sensor node, aggregation node and central server; Sensor node is separately positioned on every section point of cable under test, and aggregation node is arranged on one end of the contiguous central server of cable under test, and central server is positioned at remote monitoring center; Central server, aggregation node and sensor node are long-chain tree topology; Carry out data interaction between sensor node, sensor node and aggregation node carry out data interaction, and aggregation node and central server carry out data interaction.
Further, described sensor node has included data acquisition unit, battery module and wireless communicator, and battery module provides working power for data acquisition unit and wireless communicator; Data acquisition unit is sent by the data acquisition unit of cable to the sensor node on same branch road and is received monitoring pulse, then the monitoring pulse information received is sent to wireless communicator; Wireless communicator includes Main Processor Unit and xtend wireless communication unit, Main Processor Unit control data collector, battery module and xtend wireless communication unit work, receive and the monitoring pulse information of deal with data collector transmission, and by the monitoring pulse information after process to the xtend wireless communication unit of this sensor node, monitoring pulse information after process is sent to xtend wireless communication unit or the aggregation node of objective sensor node by this xtend wireless communication unit, and the information of convergence is sent to central server by aggregation node again.
Further, data acquisition unit sends data to Main Processor Unit by UART interface unit.
Further, Main Processor Unit adopts 16 RISC mixed signal process Msp430F169 single-chip microcomputers.
Further, described battery module includes charging control unit, solar cell and lead acid accumulator, and the electric energy that solar cell produces is lead-acid battery electric power storage by charging control unit, and charging control unit receives the control command that Main Processor Unit sends.
Another object of the present invention is just to provide a kind of cable jacket condition monitoring system based on DigiMesh network, and it can solve a difficult problem for Real-Time Monitoring power cable oversheath state and status data transfers effectively.
This object of the present invention is realized by such technical scheme, and concrete steps are as follows:
1) for each sensor node and aggregation node carry out unique number;
2) according to the geographical position of sensor node, sub-clustering is carried out to sensor node;
3) sensor node is to the adjacent sensors node of same cluster, by cable transmitted in parallel and reception monitoring pulse;
4) sensor node processes the monitoring pulse received, and by the mode of radio communication, the monitoring pulse signal after process is sent to next sensor node or aggregation node;
5) if next node is sensor node, then step 4 is proceeded to); If next node is aggregation node, then proceed to step 6);
6) aggregation node is by the information that converges to by the mode of radio communication, and the information of convergence is sent to central server;
7) central server is according to the information received, the state of monitoring cable oversheath.
Owing to have employed technique scheme, the present invention has following advantage:
Power cable oversheath status information capture and the DigiMesh communication technology combine by the present invention, realize data back in a multi-hop fashion.Cable status data are measured by data acquisition unit by the present invention in real time, transfer of data is carried out by Internet of Things, have efficient, the feature of high reliability and super low-power consumption, possesses the ability of stronger resisting nature disaster emergency communication simultaneously, timely monitoring situation can be sent to central server, central server processes data, according to the state of the data judging cable jacket after process.This is to the timely maintenance realizing power cable, and reducing the potential safety hazard existed in circuit has important realistic meaning.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized by specification below and claims and be obtained.
Accompanying drawing explanation
Accompanying drawing of the present invention is described as follows.
Fig. 1 is the wireless Mesh netword of long-chain tree topology;
Fig. 2 is communication node sub-clustering schematic diagram;
Fig. 3 is sensor node structured flowchart;
Fig. 4 is data acquisition schematic diagram;
Fig. 5 is image information transmission and reception schematic diagrames;
Fig. 6 is electric power system schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Based on the cable jacket condition monitoring system of DigiMesh network, according to the characteristic distributions of cable line, a kind of sensor node distributed model of long-chain tree-shaped is proposed.Sensor node is made up of data acquisition unit, power module and wireless communicator, is all deployed on every section point of long-chain shape cable line.An aggregation node being set in one end of the contiguous central server of every bar cable line, for collecting all monitoring pulse informations on this circuit, and being connected with the monitoring station central server of line terminal.Many long-chains take aggregation node as root shape is long-chain tree topology, and wherein every bar long-chain represents a transmission line, and its structure as shown in Figure 1.
This system has following characteristics:
(1), in the WMNs of long-chain tree topology, the data message on link is transferred to aggregation node in a multi-hop fashion;
(2) data acquisition unit on each section point and communication node have unique No. ID, so that mark the information passed back and locate, after node deployment, all no longer occurrence positions moves;
(3) data acquisition unit timing sampling, needs in data transmission procedure to arrange the data transmission rate of Msp430F169 single-chip microcomputer and the emission rate of XTend module, makes the former be not more than the latter, to prevent number according to spilling and to lose;
(4) sensor node adopts the supply power mode that solar energy combines with storage battery.For reducing power consumption, the sensor node on circuit is in resting state when not having Monitoring Data to send, before transmitting the data timing wake-up complete transmission and the reception of data.
For the tree-shaped WMNs of long-chain, the present invention adopts multi-data source multichannel parallel transmission schemes, can reduce the hop count of data, reduces processing delay and channel disturbance, improves the utilance of network.DigiMesh network based on 802.15.4 standard provides 10 40bit/s independent channels in 915MHz frequency range.Characteristic distributions according to sensor node geographical position carries out sub-clustering to node, and not selected bunch head in bunch, in case single-hop hypertelorism or same node assumes forward task too much cause node premature failure.Carry out sub-clustering for double-channel communication to node, as shown in Figure 2, in figure, odd numbers grid is cluster to sub-clustering effect, and even numbers grid is another bunch, adopts same channel communication.
For the requirement of power circuit status monitoring to stabilization of equipment performance and power consumption, a kind of sensor node design is proposed, nodal function by data acquisition unit, power module and wireless communicator three part form.Its structured flowchart as shown in Figure 3.
Wireless communicator is made up of Main Processor Unit and xtend wireless communication unit.Wherein, Main Processor Unit adopts 16 RISC mixed-signal processor Msp430F169 single-chip microcomputers, low in energy consumption, can process the reception of image level data, process, storage and transmission.Wireless communicator is by the 9Xtend wireless radio frequency modules based on DigiMesh agreement, i.e. XTend module composition, this module transmitting power is under the steady-working state of 500mW, user can be made to receive 900MHz signal 20 kilometers of visual ranges, simultaneously support node synchronous dormancy and wake up, the energy consumption in monitoring system communication process can be reduced, meet the requirement that equipment field works long hours.
In the power cable oversheath condition monitoring system course of work, the oversheath status information data collected is sent to Main Processor Unit by RS232/485 bus and UART interface unit by data acquisition unit, through process and the analysis of Main Processor Unit, relevant information is sent to the nearer node of same channel middle distance central server point through XTend module.
Cable is when normally working, line-frequency induction electric current or circular induced current can be produced in cable metal cover, now data acquisition unit can measure line-frequency induction voltage, line-frequency induction electric current or the circular induced current in oversheath, there is short trouble, lightning overvoltage or internal overvoltage once cable, will cause occurring very high power-frequency overvoltage or impulse overvoltage in metallic sheath.This data acquisition unit is after installation is complete by the adjacent sensor node transmission pulse signal of cable to same cluster, approaching sensor node produces response after receiving pulse signal, transmit leg carries out record according to answer signal to the information of circuit after receiving answer signal, and question and answer information and response message are sent to sensor node by wireless communicator.By central server, treatment and analysis is carried out to information, assess according to the state of data to cable jacket after process.
Image information XTend intermodule wireless transmission receiving course as shown in Figure 5, wherein XTend modules A and XTend module B are all operated in the frequency range of 900MHz.In encoding code stream receiving course, enter first character initial as data sequence of joint of XTend modules A data reception buffer, until the data reception buffer of XTend modules A can not receive data again, the data in buffer are by packing and by being wirelessly sent to XTend module B.
Sensor node is powered, and selection batteries is powered, solar cell floating charge mode.The confession electrical schematic of system as shown in Figure 6.Storage battery adopts maintenance-free lead accumulator usually.XTend module and camera power be 500mW, main control chip maximum power is 30mW.Upstream data collector is the Monitoring Data periodically gathered to most of business in monitoring station direction, data acquisition intervals 30min.For ten grades of links, within the cycle needing transmission state Monitoring Data, wireless communicator can be completed data transfer task by timely, fast wake-up, and this work period is about 5min.In the cycle of transmitting not having Condition Monitoring Data, communication equipment can enter resting state automatically.The solar energy power accumulating tankage of power supply to the device is 100Ah, and voltage is 5V, and when not considering to cause the factors such as voltage drop to solar storage battery charging and battery loss, the operating time of monitoring equipment is about 120 days.
Adopt solar cell as charge power supply, not by human factor and external interference, long-time running cost is low and be easy to safeguard, automatically can maintain the power supply of checkout equipment for a long time.For security consideration, shaft tower can not hang longer wire, therefore solar electric power supply system will be arranged on shaft tower together with monitoring equipment, so the volume and weight of electric power system will meet load-bearing and the wind resistance requirement of pole and tower design.Simultaneously casing adopts antimagnetic metal material, and is connected with the earth by shaft tower, and this measure can play the effect of shield electromagnetic interference, dust-proof, waterproof and anti-lightning, and guarantee monitoring system is reliable and stable.
Power cable oversheath status information capture and the DigiMesh communication technology, based on the DigiMesh network platform, combine, realize data back in a multi-hop fashion by cable jacket condition monitoring system design provided by the invention.Cable status data are measured by data acquisition unit by this design in real time, transfer of data is carried out by wireless Internet of Things, have efficient, the feature of high reliability and super low-power consumption, possesses the ability of stronger resisting nature disaster emergency communication simultaneously, timely monitoring situation can be sent to neighbouring monitoring station, monitoring station processes data, according to the state of the data judging cable jacket after process.A difficult problem for final solution Real-Time Monitoring power cable oversheath state and status data transfers, can realize the timely maintenance of power cable simultaneously, has important realistic meaning to reducing the potential safety hazard existed in circuit.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. based on the cable jacket condition monitoring system of DigiMesh network, it is characterized in that, described system includes: sensor node, aggregation node and central server; Sensor node is separately positioned on every section point of cable under test, and aggregation node is arranged on one end of the contiguous central server of cable under test, and central server is positioned at remote monitoring center; Central server, aggregation node and sensor node are long-chain tree topology; Carry out data interaction between sensor node, sensor node and aggregation node carry out data interaction, and aggregation node and central server carry out data interaction.
2. as claimed in claim 1 based on the cable jacket condition monitoring system of DigiMesh network, it is characterized in that: described sensor node has included data acquisition unit, battery module and wireless communicator, battery module provides working power for data acquisition unit and wireless communicator; Data acquisition unit is sent by the data acquisition unit of cable to the sensor node on same branch road and is received monitoring pulse, then the monitoring pulse information received is sent to wireless communicator; Wireless communicator includes Main Processor Unit and xtend wireless communication unit, Main Processor Unit control data collector, battery module and xtend wireless communication unit work, receive and the monitoring pulse information of deal with data collector transmission, and by the monitoring pulse information after process to the xtend wireless communication unit of this sensor node, monitoring pulse information after process is sent to xtend wireless communication unit or the aggregation node of objective sensor node by this xtend wireless communication unit, and the information of convergence is sent to central server by aggregation node again.
3., as claimed in claim 2 based on the cable jacket condition monitoring system of DigiMesh network, it is characterized in that: data acquisition unit sends data to Main Processor Unit by UART interface unit.
4., as claimed in claim 2 based on the cable jacket condition monitoring system of DigiMesh network, it is characterized in that: Main Processor Unit adopts 16 RISC mixed signal process Msp430F169 single-chip microcomputers.
5. as claimed in claim 2 based on the cable jacket condition monitoring system of DigiMesh network, it is characterized in that: described battery module includes charging control unit, solar cell and lead acid accumulator, the electric energy that solar cell produces is lead-acid battery electric power storage by charging control unit, and charging control unit receives the control command that Main Processor Unit sends.
6. as described in claim 1 to 5 any one, system carries out the method for monitoring, and it is characterized in that, concrete steps are as follows:
1) for each sensor node and aggregation node carry out unique number;
2) according to the geographical position of sensor node, sub-clustering is carried out to sensor node;
3) sensor node is to the adjacent sensors node of same cluster, by cable transmitted in parallel and reception monitoring pulse;
4) sensor node processes the monitoring pulse received, and by the mode of radio communication, the monitoring pulse signal after process is sent to next sensor node or aggregation node;
5) if next node is sensor node, then step 4 is proceeded to); If next node is aggregation node, then proceed to step 6);
6) aggregation node is by the information that converges to by the mode of radio communication, and the information of convergence is sent to central server;
7) central server is according to the information received, the state of monitoring cable oversheath.
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| CN201410782198.3A CN104410713B (en) | 2014-12-16 | 2014-12-16 | Cable jacket condition monitoring system and its monitoring method based on DigiMesh networks |
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| CN201410782198.3A CN104410713B (en) | 2014-12-16 | 2014-12-16 | Cable jacket condition monitoring system and its monitoring method based on DigiMesh networks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025020A (en) * | 2015-07-07 | 2015-11-04 | 成都英力拓信息技术有限公司 | Internet of Things implementation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118881A (en) * | 2009-12-31 | 2011-07-06 | 深圳先进技术研究院 | Monitoring device of overhead transmission lines and monitoring method |
| CN102818590A (en) * | 2012-07-29 | 2012-12-12 | 江苏大学 | Wireless sensor network-based transmission lines icing on-line monitoring system |
-
2014
- 2014-12-16 CN CN201410782198.3A patent/CN104410713B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118881A (en) * | 2009-12-31 | 2011-07-06 | 深圳先进技术研究院 | Monitoring device of overhead transmission lines and monitoring method |
| CN102818590A (en) * | 2012-07-29 | 2012-12-12 | 江苏大学 | Wireless sensor network-based transmission lines icing on-line monitoring system |
Non-Patent Citations (3)
| Title |
|---|
| 张华芳子: "基于Mesh的高压输电线路监测通信系统研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 朱先飞: "能量采集无线Mesh网路由协议研究", 《科学技术与工程》 * |
| 李宝林 等: "无线传感网路径选择机制研究", 《西华师范大学学报（自然科学版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025020A (en) * | 2015-07-07 | 2015-11-04 | 成都英力拓信息技术有限公司 | Internet of Things implementation method |
| CN105025020B (en) * | 2015-07-07 | 2017-12-29 | 成都英力拓信息技术有限公司 | A kind of implementation method of Internet of Things |
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