CN103944261B - The network monitoring method of high voltage bus running status and system thereof - Google Patents
The network monitoring method of high voltage bus running status and system thereof Download PDFInfo
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- CN103944261B CN103944261B CN201410145086.7A CN201410145086A CN103944261B CN 103944261 B CN103944261 B CN 103944261B CN 201410145086 A CN201410145086 A CN 201410145086A CN 103944261 B CN103944261 B CN 103944261B
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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
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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
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- 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
Abstract
The invention discloses network monitoring method and the system thereof of a kind of high voltage bus running status, this system, including some measured zone, if arranging dry measure node in each measured zone, and each measured zone all configures a distributed host；Each is measured node and all includes three to six sensor units；Between the sensor unit of each measurement node, one of them sensor unit has wireless communication module, and remaining each sensor unit has infrared communication module；In each measurement node, there is infrared communication between the sensor unit of infrared communication module and the sensor unit with wireless communication module and be connected；Each measure node all pass sequentially through there is the sensor unit of wireless communication module, single-chip microcomputer connects with corresponding distributed host radio communication；Between each distributed host, network service connects.Therefore, the network monitoring system of high voltage bus running status of the present invention builds according to decentralized supervisory control, the thought of centralized management, has extensibility.
Description
Technical field
The present invention relates to network monitoring method and the system thereof of a kind of high voltage bus running status, belong to the status monitoring field using radio sensing network to carry out intelligent grid.
Background technology
Along with improving constantly that power supply reliability requires, operation of power networks develops towards intelligent direction.Intelligent grid is by highly integrated for advanced sensing measurement technology, ICT, analysis decision technology and automatic control technology, electricity power technology and network infrastructure and that formed new-modernization electrical network.Intelligent grid will realize the acquisition to electrical network panoramic information, based on reliable physics electrical network and information exchange platform, integrate the various data messages produced in real time in operation of power networks, show comprehensive, complete and fine power grid operation state to Regulation personnel, be provided that corresponding aid decision support simultaneously and control embodiment and contingency plan.
In electrical network, bus is for connection to the transmission facility between voltage power distribution equipment at different levels and transformator thereof, is one of crucial composition in network system.Along with intelligent grid is to monitoring in real time, control, diagnose and the demand such as analysis being continuously increased, bus intellectualized technology the most progressively develops.The normal safe of bus runs, and is the essential condition ensureing electric power transmission, and once bus breaks down, it will cause transmission of electricity to interrupt even causing dangerous accident.And if the running status of bus can be understood in real time, fault occur before can pinpoint the problems in time and get rid of hidden danger, it becomes possible to avoid unnecessary loss.
Current existing female line monitoring system, frequently with communication implementation such as CAN, Fibre Optical Sensor, radio sensing networks.CAN bus is one of the most widely used fieldbus, is the serial communication bus of a kind of multiple host pattern.CAN is applied to the monitoring of bus running status, there is wiring and the problem such as diversion project is big, irremovable, deployment workload is bigger.Fibre Optical Sensor is a kind of device that measured parameter is changed into measurable optical signal, and using light as the carrier of sensitive information, using optical fiber as the medium of transmission sensitive information.Fibre Optical Sensor has high temperature resistant, not good by electromagnetic interference, electrical insulation capability, can the series of advantages such as steady operation in the adverse circumstances such as strong-electromagnetic field.But so far, Fibre Optical Sensor cost is high, is not suitable for popularization and application on a large scale.And radio sensing network has that layout is convenient, electromagnetism interference and the many advantages such as construction cost is relatively low, research and wide application are the most obtained.
Existing high voltage bus temperature monitoring system based on radio sensing network has the following disadvantages, and is i.e. difficult in the case of ensureing High-Voltage Insulation reliably accurately, efficiently realize communication and fault location；Limited system maximum node number is few, limits the scale of networking.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of network monitoring method of high voltage bus running status, it builds according to decentralized supervisory control, the thought of centralized management, has extensibility simultaneously.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of network monitoring method of high voltage bus running status, first, is divided into some measured zone by electrical network, to the tested high voltage bus being in each measured zone, according to the cabling connection of this tested high voltage bus, if arranging dry measure node；Secondly, corresponding to each measurement node, three to six sensor units are set, to be respectively used to measure the relevant parameter of each phase bus corresponding to this measurement node；Between each sensor unit of each measurement node, one of them sensor unit has wireless communication module, remaining each sensor unit has infrared communication module, the relevant parameter collected is transmitted to the sensor unit with wireless communication module by the way of infrared transmission by the described sensor unit with infrared communication module, have after the relevant parameter that each sensor unit collects collects by the sensor unit of wireless communication module, by the distributed host in communication transmission to corresponding measured zone, each distributed host passes through single-chip microcomputer, according to received relevant parameter, corresponding node of measuring is monitored in real time.
nullAs a further improvement on the present invention，Described sensor unit is temperature sensor unit，Described single-chip microcomputer is single-chip microcomputer Msp430，It is integrated with data processing module，Temperature information according to received each temperature sensor unit feedback，Compare with the temperature threshold preset in single-chip microcomputer Msp430，If the temperature information of temperature sensor unit feedback is more than temperature threshold，Trigger warning circuit，If the temperature information of temperature sensor unit feedback is less than temperature threshold，Then judge whether the temperature information that Current Temperatures sensor unit feeds back exists change compared with the most tested high voltage bus temperature information，If the temperature information of Current Temperatures sensor unit feedback is in rising change，Then update the temperature information that in distributed host, corresponding measurement node is corresponding，Otherwise then carry out corresponding operating according to the instruction of distributed host input.
Another technical purpose of the present invention is to provide the monitoring system of a kind of network monitoring method realizing above-mentioned high voltage bus running status, including some measured zone, if the tested high voltage bus in each measured zone arranges dry measure node according to cabling connection, and each measured zone all configures a distributed host；Each is measured node and all includes three to six sensor units, to be respectively used to measure the relevant parameter of each phase bus corresponding to this measurement node；Between the sensor unit of each measurement node, one of them sensor unit has wireless communication module, and remaining each sensor unit has infrared communication module；In each measurement node, there is infrared communication between the sensor unit of infrared communication module and the sensor unit with wireless communication module and be connected；Each measure node all pass sequentially through there is the sensor unit of wireless communication module, single-chip microcomputer connects with corresponding distributed host radio communication；Between each distributed host, network service connects.
Described sensor unit includes power module, this power module include Current Mutual Inductance circuit, stand-by power supply and for switch Current Mutual Inductance circuit, stand-by power supply power supply switching chip.
Described sensor unit is temperature sensor unit, and including temperature measuring circuit, this temperature measuring circuit includes thermocouple.
Described single-chip microcomputer is single-chip microcomputer Msp430, this single-chip microcomputer Msp430 includes Zigbee wireless communication module and data processing module, single-chip microcomputer Msp430 receives the temperature information measuring node feeding back by Zigbee wireless communication module, simultaneously by the received temperature information measuring node feeding back after data processing module processes, transmitted to distributed host by Zigbee wireless communication module.
Data processing module has the functions such as realtime curve, real-time curve drafting, historgraphic data recording and storage, logout, automatic report generation, real-time control；And also there is fault or potential faults warning function.
According to above technical scheme, relative to prior art, the present invention has the advantage that
1, the network monitoring system of high voltage bus running status of the present invention builds according to decentralized supervisory control, the thought of centralized management, has extensibility；
2, realizing communication by infrared mode between the sensor unit in measurement node of the present invention, advantage mainly has: the communication between sensor unit is not affected by electromagnetic interference, it is adaptable to the environment of highfield；Communication between different measuring node also will not interfere, and each is measured meshed network and can coexist under same overall situation independently of one another.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the present invention；
Fig. 2 is the structural representation of single measurement node of the present invention；
Fig. 3 is the structural representation of monitoring system of the present invention；
Fig. 4 is power supply switch circuit figure；
Fig. 5 is temperature measuring circuit figure；
Fig. 6 is data processing module flow chart.
Detailed description of the invention
Technical scheme is explained below with reference to accompanying drawing.
High voltage bus of the present invention (as long as referring to 10kV/6kV/1kV high voltage bus here) monitoring system is a distributed monitoring system, build according to decentralized supervisory control, the thought of centralized management, simultaneously for improving the extensibility of system herein, devise system architecture as shown in Figure 1.
On tested high voltage bus, according to the connection of bus cabling, arranging several and measure node, each measurement point has 3 sensor units, measures the relevant parameter of A, B, C three-phase bus respectively.Data message between 3 sensor units of each node, realizes communication (1 grade of network in Fig. 1) by infrared mode, and is aggregated into by data message in one of them unit.Measurement node is external, then based on communication transmitting data information, i.e. for 3 sensor units at same measurement node are external, can be conceptualized as one and measure node.Several are measured node and form wireless sensor network by communication, it is achieved the transmission (2 grades of networks in Fig. 1) to tested bus related data information, and collect these data messages to distributed host.The LAN (3 grades of networks in Fig. 1) that several distributed host recompositions are bigger, every distributed host all can monitor the state of all nodes in real time, and can issue, by Internet, the data message recorded, it is achieved remotely monitor.
10kV bus has A, B, C three-phase, voltage to be between phase and phase the line voltage of three phase bus system.In order to ensure to insulate reliably, in the present invention, the measurement (monitoring) to three-phase bus uses floating potential method, sensor node unit on the most each phase bus has same potential with corresponding bus, so, on A, B, C three-phase bus at same measurement node, the current potential of 3 sensor units just differs.Communication is realized by infrared mode, as shown in Figure 2 between sensor unit.In measuring node, the advantage of over the horizon communication system is used mainly to have: the communication between sensor unit is not affected by electromagnetic interference, it is adaptable to the environment of highfield；Communication between different measuring node also will not interfere, and each is measured meshed network and can coexist under same overall situation independently of one another.
As it is shown on figure 3, single-chip microcomputer Msp430 is as Master control chip, it at most can gather the temperature data of 6 passages, and temperature data information is shown on liquid crystal (or charactron).The numbering of different bus temperature monitoring nodes, by being configured by grafting keypad on this node flexibly.Single-chip microcomputer Msp430 uses Zigbee communication, receives instruction and temperature monitoring threshold value that host computer is sent, and sends the bus temperature data message recorded to host computer.When bus temperature changes, the temperature data information recorded can actively be sent to host computer by bus temperature monitoring node, and when bus temperature exceedes temperature threshold, this node is reported to the police by light emitting diode, buzzer.
A sensor unit must be had to have radio communication function in one measurement node, the data of other two unit send to this unit by the way of infrared radio, externally sent by this unit is unified, therefore another two unit need not wireless communication module.Sensor unit containing radio communication function is made up of 5 parts: power module, measurement module, infrared communication module, data management module and wireless communication module etc..Sensor unit without radio communication is then made up of 4 parts: power module, measurement module, infrared communication module, data management module.
In the application, the working power of sensor unit i.e. power module, as shown in Figure 4, it is that electromagnetic induction principle based on operation of current transformers realizes, from transmission line of electricity, obtain faradic current particular by mutual-inductance element, recycle change-over circuit, convert the current to voltage, and after voltage stabilizing, export DC voltage, think that other function internal circuit are powered.In view of sensing power taking only could normally work in certain load current range, power module has the most specially installed additional reserve battery, i.e. power module sense power taking can normally work time, use sensing way to take power power, and for reserve battery charging；And when sensing power taking cisco unity malfunction, just powered by reserve battery.Power supply switch circuit is as shown in Figure 3.Wherein, GET_POS is the positive output end of sensing power-supply circuit, and BAT_POS is the positive output end of battery, and EDVCC is connected to other parts of circuit, for the positive output end of power module.TPS2110 is that power supply switches special chip, and when the voltage of GET_POS switches threshold values higher than TPS2110, EDVCC with GET_POS connects, and disconnects with BAT_POS, and result is powered with sensing way to take power for measuring node；And when the voltage of GET_POS is less than the switching threshold values of TPS2110, EDVCC with BAT_POS connects, and disconnect with GET_POS, so, change reserve battery into and power for measuring node.
The circuit of temperature survey and the signal detection i.e. measurement module of sensor unit is as shown in Figure 5.Temperature transducer uses PT100 type thermocouple.Dut temperature signal is amplified, inputs to A/D convertor circuit.Zener diode D1 shields, to prevent overvoltage from making circuit damaged.
The infrared communication module of sensor unit, it is achieved the infrared communication between each sensor unit.Infrared communication technique, it it is the data transmit-receive being realized radio communication by the mutually conversion between electric pulse and infrared light pulse, be suitable for low cost, high speed communication data cross-platform, point-to-point connects, and has the technical characterstics such as low-angle (within 30 degree of cone angles), short distance, point-to-point linear transmission data message and strong security.Infrared communication technique be limit use space, have light-proof material barrier, can be Compartmentalization；Infrared communication technique utilizes this feature of optical transport data, it is determined that it does not exist and takies wireless channel resource, and safety is the highest.Additionally, infrared communication technique also has the advantages such as the installation of strong interference immunity, system is simple, be easily managed.Infrared communication technique is applied to the structure of high voltage bus monitoring system, on the one hand the highfield interference to communication can be avoided, what is more important, interfering of signal between different measuring node can be prevented effectively from so that the sensor unit in individual node can realize communicating reliably independently.
The design uses MSP430F149 single-chip microcomputer as microprocessor, complete real-time centralized calculation and the process of data measured information, i.e. it constitute the data processing module in system constructed by the present invention.The program flow diagram of single-chip microcomputer is as shown in Figure 6.
The data that all the sensors unit in same measurement node records, after over the horizon communication system gathers, then are sent out away by communication.That is, several measure node network consisting, wherein, each communication measured between node, use what radio magnetic wave mode realized.If the distance between different such networks is enough remote, does not results in interference each other, so, identical frequency can be used；If distance is near, be not enough to avoid interference, then in order to ensure not interfere with each other between heterogeneous networks, heterogeneous networks is accomplished by using different communication frequencies.Several are measured node and wirelessly realize the network that communication is constituted, also referred to as radio sensing network.
The data of radio sensing network finally collect to corresponding distributed computer station, monitoring programme on computer can show each node in monitored bus-bar system, the state of temperature of each unit under test and the situation etc. of variations in temperature in real time, and has the functions such as realtime curve, real-time curve drafting, historgraphic data recording and storage, logout, automatic report generation, real-time control；And also there is fault or potential faults warning function, by modes such as the changes of sound and color, or related personnel's timely handling failure hidden danger can be reminded with special alarm screen；And can record, preserve the data message such as the situation of Parameters variation, the time of generation, fault type before and after fault occurs, and can random printing, show and export.
Data on distributed computer, can be stored in real time to local Relational database, and the data in this data base are available for native query, it is also possible to for other computer inqueries in network.In other words, as long as other computers are networked with distributed main frame, get final product the data message of long-range real-time query mother's 10kV line monitoring system, it is achieved the long-range monitoring of 10kV bus working.By several distributed host networkings, can be by several independent radio sensing network one bigger monitoring networks of composition, to meet the detection needs of bigger 10kV bus condition detecting system.
Claims (5)
1. the network monitoring method of a high voltage bus running status, it is characterized in that: first, electrical network is divided into some measured zone, to the tested high voltage bus being in each measured zone, cabling connection according to this tested high voltage bus, if arranging dry measure node；Secondly, corresponding to each measurement node, three to six sensor units are set, to be respectively used to measure the relevant parameter of each phase bus corresponding to this measurement node；Between each sensor unit of each measurement node, one of them sensor unit has wireless communication module, remaining each sensor unit has infrared communication module, the relevant parameter collected is transmitted to the sensor unit with wireless communication module by the way of infrared transmission by the described sensor unit with infrared communication module, have after the relevant parameter that each sensor unit collects collects by the sensor unit of wireless communication module, by the distributed host in communication transmission to corresponding measured zone, each distributed host passes through single-chip microcomputer, according to received relevant parameter, corresponding node of measuring is monitored in real time；Described sensor unit is temperature sensor unit, described single-chip microcomputer is single-chip microcomputer Msp430, it is integrated with data processing module, temperature information according to received each temperature sensor unit feedback, compare with the temperature threshold preset in single-chip microcomputer Msp430, if the temperature information of temperature sensor unit feedback is more than temperature threshold, trigger warning circuit, if the temperature information of temperature sensor unit feedback is less than temperature threshold, then judge whether the temperature information that Current Temperatures sensor unit feeds back exists change compared with the most tested high voltage bus temperature information, if the temperature information of Current Temperatures sensor unit feedback is in rising change, then update the temperature information that in distributed host, corresponding measurement node is corresponding, otherwise then carry out corresponding operating according to the instruction of distributed host input.
The network monitoring system of high voltage bus running status the most according to claim 1, it is characterized in that: described sensor unit includes power module, this power module include Current Mutual Inductance circuit, stand-by power supply and for switch Current Mutual Inductance circuit, stand-by power supply power supply switching chip.
The network monitoring system of high voltage bus running status the most according to claim 2, it is characterised in that: described sensor unit is temperature sensor unit, and including temperature measuring circuit, this temperature measuring circuit includes thermocouple.
The network monitoring system of high voltage bus running status the most according to claim 3, it is characterized in that: described single-chip microcomputer is single-chip microcomputer Msp430, this single-chip microcomputer Msp430 includes Zigbee wireless communication module and data processing module, single-chip microcomputer Msp430 receives the temperature information measuring node feeding back by Zigbee wireless communication module, simultaneously by the received temperature information measuring node feeding back after data processing module processes, transmitted to distributed host by Zigbee wireless communication module.
The network monitoring system of high voltage bus running status the most according to claim 4, it is characterised in that: data processing module has realtime curve, real-time curve drafting, historgraphic data recording and storage, logout, automatic report generation, Real Time Control Function；And also there is fault or potential faults warning function.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0949733A2 (en) * | 1998-04-06 | 1999-10-13 | Eaton Corporation | Accessory network for an electronic trip unit |
| CN201852639U (en) * | 2010-09-21 | 2011-06-01 | 上海科斗电子科技有限公司 | Wireless temperature sensor |
| CN103674291A (en) * | 2012-11-01 | 2014-03-26 | 曾奕 | Temperature monitoring system of all-insulated bus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0949733A2 (en) * | 1998-04-06 | 1999-10-13 | Eaton Corporation | Accessory network for an electronic trip unit |
| CN201852639U (en) * | 2010-09-21 | 2011-06-01 | 上海科斗电子科技有限公司 | Wireless temperature sensor |
| CN103674291A (en) * | 2012-11-01 | 2014-03-26 | 曾奕 | Temperature monitoring system of all-insulated bus |
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