CN103124105A - Wireless intelligent sensor network system for monitoring states of intelligent substation devices - Google Patents
Wireless intelligent sensor network system for monitoring states of intelligent substation devices Download PDFInfo
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention relates to a wireless intelligent sensor network system for monitoring states of intelligent substation devices. The system is overall divided into a transformer substation level state monitoring system and a dispatching center level state monitoring system, the transformer substation level state monitoring system is divided into a sensing layer, an accessing layer and an application layer, an intelligent sensor on the sensing layer is responsible for collecting image and scalar data, and transmitting information to a monitoring center platform on the application layer through the accessing layer, and key information is transmitted to a dispatching center monitor integration platform through an electric power data communication network. A self-organization and self-recovery wireless substation device monitoring network is established to replace traditional wired ways, so that hierarchical distribution co-processing of data is achieved, communication load balancing capacity of the monitoring network is improved, wiring difficulties of installation are reduced, installation costs of transformation and upgrade of the substation devices are reduced, flexibility and use ratio of the monitoring network system are enhanced, overall assessment of operation conditions of the substation devices is enhanced, and fault hidden dangers of the devices can be timely found and eliminated.
Description
Technical field
The invention belongs to substation equipment state on_line monitoring technical field, particularly a kind of Wireless intelligent sensor network system towards the intelligent transformer substation equipment state monitoring.
Background technology
Intelligent substation is three-decker, i.e. station level, wall, the process layers of adopting at present more.The main integrated tradition of process layer once, the intelligent assembly of secondary device forms, as intelligent transformer, intelligent breaker, unconventional instrument transformer etc., the state information collection of these equipment is the bases of carrying out equipment state evaluation, risk assessment, Strategies of Maintenance formulation and repair and maintenance etc., and the raising of equipment state on-line monitoring performance level is the intelligent substation safe operation, improves intelligent grid to the inevitable requirement of Obtaining Accurate and the network interactive of status information of equipment.The existing research history for many years of high voltage device of transformer station on-line monitoring, the insulation of the equipment such as power transformer, switchgear, instrument transformer and lightning arrester and machine performance on-line monitoring technique are at power grid application, and some areas grid company has been set up full station equipment multi-parameter, multi-functional on-line monitoring system.And along with the development of intelligent grid technology, the IEC standard has proposed concept and the standard of the intelligent electronic device IED of substation equipment status monitoring, and the integrated various functions equipment such as intelligent assembly, integrated intelligent terminal is developed on this basis, and the cable network scheme is generally adopted in current monitoring to various converting equipments, but this scheme exists line arrangement and change inconvenience, the network upgrade expansion is difficult, installation and maintenance are complicated, the high in cost of production shortcoming, therefore considers to adopt wireless technology that the substation equipment Condition Monitoring Technology is expanded and upgraded.
Wireless sensor network (Wireless Sensor Network, WSN) is a kind of special wireless self-organization network, has been widely used in other various fields such as military affairs, environmental monitoring, health care, household, business, industry.With respect to the communication system of legacy equipment status monitoring, wireless sensor network has that wiring is simple, device is simplified, cost is low, plug and play, have self-organizing and extensive property, is more suitable for distributed treatment, is convenient to build the advantage such as application platform.
Intelligent sensor technology in wireless sensor network be one just at flourish Modern Sensor Technology, than the simple function of traditional sensors, the intelligence sensor characteristics are mainly reflected in that precision is high, reliability and stability good, signal to noise ratio is high, resolving power is strong, adaptivity is strong, cost performance is low.Function has comprised self-correcting zero, demarcation, self-correcting certainly; Auto-compensation; The data preliminary treatment; Automatic gauging, certainly seek fault; Data storage, memory; Both-way communication, standardized digital output; From judgement and decision-making treatment etc.The above characteristics of intelligence sensor are more suitable for the monitoring state of in intelligent substation intelligent assembly or integrated intelligent terminal and data traffic is complicated, the monitoring requirements of isomery, it not only can be realized the collection of simple scalar data (as temperature, noise, electric current etc.), transmission and process, the multimedia data informations such as the sound that all right obtaining information amount is abundant, image, realize fine-grained information monitoring, and to the conduct monitoring at all levels in perception zone.
Summary of the invention
The present invention is directed to the deficiency of existing substation equipment condition monitoring system, proposed a kind of Wireless intelligent sensor network system towards the intelligent transformer substation equipment state monitoring, can realize intelligent substation equipment on-line real-time state monitoring.
The technical scheme that the present invention takes:
A kind of Wireless intelligent sensor network system towards intelligent transformer substation equipment state monitoring is characterized in that: this system is according to the tri-level logic structure of intelligent substation, and monitoring network system is divided into three layers of sensing layer, Access Layer and application layers.This system comprises intelligence sensor node, leader cluster node, network coordinator, radio network gateway, fiber optic network, transformer station's level monitoring center data platform and control centre's level status monitoring integrated platform.Intelligence sensor node is responsible for gathering the real-time running state parameter of traditional primary equipment and intelligent assembly, and parameter is carried out preliminary treatment, the data after then processing are sent to level monitoring center of transformer station data platform by leader cluster node, network coordinator, radio network gateway and fiber optic network; The data analysis of monitoring center's data platform to receiving, realize functions such as early warning, failure diagnosis, risk assessment to equipment optionally environment division state analysis result being sent to control centre's status monitoring integrated platform by the electric power data communication network simultaneously according to analysis result.
In the present invention, described sensing layer: mainly the intelligence sensor node by the various electric equipments of monitoring forms, intelligence sensor is integrated traditional data pick-up and imageing sensor, be responsible for scalar data and the image of distinct device in the awareness apparatus layer, equipment carried out status visualization show.
Described Access Layer: be mainly status information of equipment and status image after the process analog-to-digital conversion, fusion by leader cluster node, then the data of handling well are sent network coordinator, then the radio network gateway of band GPRS modem docks fiber optic network between intelligent substation wall and station level by fiber optic network.
Described application layer: mainly comprise monitoring center in station level, expert system, server etc., be responsible for storage and the analysis of device status data, completed every monitoring parameter computing in conjunction with database and expert system by monitoring center's server, dope equipment operation condition, and then provide foundation for maintenance decision system; Optionally the equipment on-line status data is transferred to control centre's monitoring system by router through electric power data network in addition.
Adopt the redundancy Star Network in described convergence-level between intelligence sensor and leader cluster node.
Freely form netted or tree network according to the network operation between leader cluster node in described convergence-level.
Compared with prior art, the invention has the beneficial effects as follows: 1. have for current cable network that line arrangement and change inconvenience, network upgrade expansion difficulty, installation and maintenance are complicated, the high in cost of production problem, adopt wireless sensor network to make the cost of monitoring system, autgmentability increase; 2. the data analysis of monitoring center's data platform assessment in the Data Fusion of leader cluster node and application layer in the preliminary preliminary treatment of the data of intelligence sensor, Access Layer in sensing layer is conducive to distributed collaboration collection, processing, fusion, the analysis of status information of equipment; 3. intelligence sensor node is pressed monitoring equipment and the integrated sensor of parameter, actual deployment, practical function, and network topology is flexible; 4. leader cluster node, network coordinator select high-end processor as data processing module, can satisfy the processing of intelligent substation complex data stream and the needs of online real-time state monitoring; 5. the flexible design of Routing Protocol can satisfy the transmitting of equipment state isomerism data, and the state characteristic of wireless sensor network own changes.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the Wireless intelligent sensor network system schematic towards the intelligent transformer substation equipment state monitoring.
Fig. 2 is the structural representation of intelligence sensor in the monitoring system framework.
Fig. 3 is the structural representation of leader cluster node in the monitoring system framework.
Fig. 4 is transformer station's level and control centre's level two-stage condition monitoring system schematic diagram.
Embodiment
As shown in Figure 1, a kind of Wireless intelligent sensor network system towards the intelligent transformer substation equipment state monitoring comprises the sensing layer, Access Layer and the application layer that adopt hierarchical routing protocol design and distributed information associated treatment and fusion, wherein:
In sensing layer, monitoring target mainly comprises: environmental parameter, the monitoring of whole station, intelligent power transformation device/reactor, GIS, intelligent breaker, unconventional voltage/current instrument transformer, lightning arrester, high voltage bus; The sensor type that adopts comprises: gas sensor, uhf sensor, sieve formula coil pickoff, little water sensor, dielectric loss transducer, temperature sensor, pressure sensor, current sensor, humidity sensor, imageing sensor.
The concrete deployment of intelligence sensor node is that the equipment in transformer station logically is divided into different monitoring intervals by type, interval inner sensor node is divided into different bunches by data pick-up and imageing sensor, each bunch is the equal of a comparatively fixing wireless network, the scope of system is determined by the actual conditions of network coverage area, after intelligence sensor collects data and carries out preliminary treatment, data are sent to the leader cluster node at place bunch.
In Access Layer leader cluster node be positioned at divide bunch centered by the position, make each node and its transmission range roughly the same, the power consumption profile of each node is comparatively even, thereby avoids some node because transmission range far causes the too much consumption of energy; When disposing leader cluster node, the employing redundancy arranges, and leader cluster node breaks down, and the sensor node data image that it is responsible for can merge transmission by the redundancy leader cluster node that closes on respectively, so just consist of other new bunch, effectively improved the reliability of wireless sensor network; The leader cluster node of different bunches can form the network topologies such as netted, tree type fast according to network operation state.Leader cluster node is mainly completed data fusion and the packet of hopping, can with its lower bunch the intelligence sensor node collection the data image fusion treatment and send to nearby network coordinator, simultaneously network coordinator can also be sent to its packet to bunch broadcasting of its jurisdiction, complete distributed collaboration and process.Simultaneously, also complete network dynamic reconfigurable algorithm, keep the robustness of network.
Data are sent to the network coordinator with GPRS modern after the leader cluster node fusion treatment, network coordinator is except participating in communication, the main responsible network of coordinating to set up, other function also comprises: network node Identity Management, link-state information management, forwarding of packets transmit networked beacons, in addition, network coordinator will be stored some essential informations, as node device data, data retransmission table and device association etc.Can communicate by letter between adjacent network coordinator, so just can when line fault occurring, guarantee that the data image of sensor node can normally transmit by multihop path.
Final data is sent to radio network gateway by network coordinator, then docks 100,000,000 or gigabit Ethernet between wall and station level by GPRS network.
In application layer monitoring center in conjunction with expert system and server by to every monitoring parameter computing, provide monitoring of equipment early warning, equipment fault diagnosis, equipment state grading, equipment risk evaluation, maintenance decision support, counter arrange management, produce add up, the service of information security management.
As shown in Figure 2, described intelligence sensor is to detect and the transducer of the information processing function with low side microcontroller, the information that has concurrently, have self calibration, self diagnosis, data storage, logic judgement, the information processing function, comprise data acquisition module, low side microcontroller, data memory module, radio-frequency (RF) receiving and transmission module, power module.In data acquisition module according to the state parameter of distinct device, integrated required imageing sensor, current sensor, uhf sensor equiscalar data and image acquisition component, the work of data selection management multisensor operation; The analog signal that gathers is transferred to the low side microcontroller through analog to digital converter and carries out the data preliminary treatment, then by radio-frequency (RF) receiving and transmission module output equipment state parameter, as partial discharge, oil temperature, resistive Leakage Current, iron core and clamp earthing current, energy storage motor electric current, capacity current, humidity etc.
Wherein the data-handling capacity of intelligence sensor node does not require very highly, so microcontroller adopts 4 low side microcontrollers, considers from the low-power consumption angle during chip selection, as MSP430Flxx MCU series; Select the near radio technology according to applied environment and demand in radio-frequency (RF) receiving and transmission module, as Zigbee, Bluetooth (bluetooth), UWB (super wideband), Wi-Fi (WLAN (wireless local area network) 802.11), IrDA (infrared data transmission), NFC (short-range communication); Sensor parameters is adjusted PROM and is connected with the low side microcontroller, is responsible for the data that calibrate for error that storage sensor is measured; Data storage E
2PROM is responsible for the historical data of storage device status parameter; Power module can consider to adopt rechargeable type, is responsible for the intelligence sensor modules is powered.
As shown in Figure 3, described leader cluster node comprises radio-frequency (RF) receiving and transmission module, high-end processor module, memory and power module.The intelligence sensor node radio-frequency (RF) receiving and transmission module type at the corresponding place of the radio-frequency (RF) receiving and transmission module of leader cluster node bunch sends the data that receive to high-end processor module and processes; Leader cluster node needs multi-source, the diversiform data at place bunch are carried out fusion treatment, the high data volume business that particularly comprises image, so 32 high-end processors of processor adopting, support the energy-conservation strategies such as DVS (dynamic electric voltage adjusting) or DFS (dynamic voltage scaling), as arm processor etc., the data after processor module is processed send network coordinator to by radio-frequency (RF) receiving and transmission module; Memory is connected with high-end processor module; Power module adopts the charging type, is responsible for each functional module power supply to leader cluster node.
As shown in Figure 4, intelligent transformer substation equipment state monitoring integrated platform general frame is divided into two-stage status monitoring platform: transformer station's level monitoring center data platform and control centre's status monitoring integrated platform.Control centre's status monitoring integrated platform is mainly to the capital equipment key state information of zone access intelligent substation and the equipment electric parameter of collecting from control centre's related system, utilize cloud computing, a large amount of historical datas are analyzed, for running status and the failure risk of equipment provides more professional, more macro-forecast.
level monitoring center of transformer station data platform is positioned at the station level of intelligent substation, by collecting device on-line condition monitoring data and from the relevant static data of the equipment of production management system or power dispatch system operation and management system or Enterprise Resources Planning management system, then to the status information of equipment modeling, build model library and knowledge base, the monitoring and warning module, fault diagnosis module, the Condition evaluation module, risk evaluation module is carried out analyzing and processing to the data model, the maintenance decision information of equipment is provided, analyzing data can be by the UI interface module with form, curve, the mode of log query or automatic alarm represents.In addition, the UI interface module also provides the different user roles' such as expert assessment and evaluation interface, system maintenance people operator interfaces, domestic consumer interface interface.
Claims (4)
1. Wireless intelligent sensor network system towards intelligent transformer substation equipment state monitoring, it is characterized in that, integral body is divided into transformer station's level and control centre's level two-stage condition monitoring system, adopt layered distribution type structure in the intelligent transformer substation equipment state monitoring network, be divided in logic three layers of sensing layer, Access Layer and application layers.
2. the Wireless intelligent sensor network system towards the intelligent transformer substation equipment state monitoring according to claim 1, is characterized in that, sensing layer comprises intelligent assembly and intelligence sensor.To adopt integrated traditional for intelligent substation once, the intelligent assembly of secondary device, and equipment itself also may be with the integrated sensor module.Intelligence sensor is to detect and the transducer of the information processing function with low side microcontroller, the information that has concurrently, is responsible for the real-time status data of intelligent assembly are monitored and gathered.
3. the Wireless intelligent sensor network system towards intelligent transformer substation equipment state monitoring according to claim 1, is characterized in that, Access Layer comprises leader cluster node, network coordinator, with the radio network gateway of GPRS modem.Leader cluster node merges rear formation information from the intelligence sensor receive data to data, and information is sent to network coordinator with less radio-frequency.At last, information exchange is crossed with the radio network gateway of GPRS modem, the fiber optic network of station level, is sent to monitoring center's data platform of station level.
4. the Wireless intelligent sensor network system towards intelligent transformer substation equipment state monitoring according to claim 4, it is characterized in that, application layer mainly comprises monitoring center, expert system, server etc., be responsible for storage and the analysis of device status data, completed every monitoring parameter computing in conjunction with database and expert system by monitoring center's server, dope equipment operation condition, maintenance decision is provided; And by the electric power data communication network, the presence transfer of data of equipment is monitored integrated platform to the control centre.
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