CN201947455U - Wireless sensor network system for monitoring data of grid in real time - Google Patents
Wireless sensor network system for monitoring data of grid in real time Download PDFInfo
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- CN201947455U CN201947455U CN2010206784518U CN201020678451U CN201947455U CN 201947455 U CN201947455 U CN 201947455U CN 2010206784518 U CN2010206784518 U CN 2010206784518U CN 201020678451 U CN201020678451 U CN 201020678451U CN 201947455 U CN201947455 U CN 201947455U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- 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
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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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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- 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
- Y04S40/128—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 involving the use of Internet protocol
Abstract
The utility model discloses a wireless sensor network system for monitoring data of a grid in real time, which comprises a wireless sensor node, a gateway node, an Internet network, and a data platform of a monitoring center, wherein the wireless sensor node acquires real-time operation state parameters of grid equipment, and transmits the acquired parameters to the data platform of the monitoring center through the gateway node and the Internet network; the data platform of the monitoring center monitors the received data of grid equipment in real time; and the wireless sensor node and the gateway node are connected with a power supply module. In the utility model, in-time induction for internal threats of the grid equipment is realized through data monitoring means so as to determine the equipment operation state of a circuit. The gateway node has a quick transmission speed and high anti-jamming capability; the wireless sensor network node and the gateway node can be used for effectively storing energy; and the operation of the wireless sensor network node and the gateway node at a long service life is realized.
Description
Technical field
The utility model relates to a kind of real-time power network data monitoring system, specifically a kind of wireless sensor network system that is used for the real-time power network data monitoring.
Background technology
Applying of real-time power network data monitoring technology is electric power netting safe running, the inevitable requirement that improves electric network transportation ability.The electric power transmission specialty is an electrical network assets maximum, distribution is the widest, equipment operating environment is complicated, abominable, the professional link of external force influencing factor pilosity.Electrical network high speed development in recent years also makes the deficiency of human resources highlight more simultaneously.Because the device security problem of transmission line such as the lead operating temperature is too high, sag variation, windage yaw discharge, aeolian vibration, shaft tower inclination etc. all can't be found by naked eyes mostly.Solve this a series of problem, except that the technical guarantee that electric aspect will be arranged, also should on means, innovate.Existing electric network data monitoring mode can not meet the demands.
Summary of the invention
For overcoming the deficiency of existing transmission line condition monitoring system, the purpose of this utility model provides a kind of wireless sensor network system that is used for the real-time power network data monitoring, this system adopts wireless sensor network, can realize transmission line online in real time status monitoring.
The purpose of this utility model is by realizing to state technical scheme:
A kind of wireless sensor network system that is used for the real-time power network data monitoring, it is characterized in that: this system comprises wireless sensor node, gateway node, Internet network and monitoring center's data platform, wireless sensor node is gathered grid equipment real-time running state parameter, and the parameter that collects is sent to monitoring center's data platform by gateway node and Internet network; Monitoring center's data platform is monitored the grid equipment real time data of receiving; Described wireless sensor node is connected with power module with gateway node.
In the utility model, described wireless sensor node comprises data acquisition module, data processing module and data transmission module, data collecting module collected grid equipment real-time running state parameter, and the parameter that collects is sent to data processing module, and the data after will handling send gateway node to by data transmission module.
In wireless sensor node, be provided with environmental parameter wireless sensor node, electric current wireless sensor node, light wireless sensor node, pressure wireless sensor node, displacement wireless sensor node, acceleration wireless sensor node and microwave induced formula wireless sensor node.Described environmental parameter comprises temperature, humidity, wind direction, wind speed, sunshine and rainfall.
Described gateway node comprises ZigBee module, processor module, GPRS module, memory and sim card socket, the ZigBee module sends the data that receive to processor module and handles, and the data after processor module will be handled send the GPRS module to and send the Internet network to by antenna; Memory is connected with processor module, and sim card socket is connected with the GPRS module.The ZigBee module is main the composition by CC 2430 radio-frequency (RF) receiving and transmission module mainly, CC2430 is embedded in the ZigBee agreement of curing, the data that receive are sent into processor module, processor is selected ARM9 for use, processor is used (SuSE) Linux OS, the GPRS module mainly is made of the GPRSMC55 chip, realizes being connected with the Internet net.
Described monitoring center data platform comprises data collection layer, data analysis layer, data center's layer, data analysis layer, repair based on condition of component layer and ultra-high-tension power transmission line.
The utility model can be realized six kinds of online in real time status monitorings of transmission line: electric transmission line isolator leakage current, equivalent salt deposit density, conductor temperature and dynamic compatibilization, ice covering on transmission lines are avenged, power transmission line is waved and the power transmission line burglar alarm.According to six kinds of monitorings, need seven kinds of wireless sensor network nodes, be respectively: environmental parameter (temperature, humidity, wind direction, wind speed, sunshine and rainfall) wireless senser transmission node, electric current wireless sensor node, light wireless sensor node, pressure wireless sensor node, displacement wireless sensor node, acceleration wireless sensor node and microwave induced formula wireless sensor node.
Wireless sensor network node is responsible for forming module with unified model power module operating voltage is provided to each, guarantee its operate as normal, the twin double-energy storage device of can device and forming that this power module is made up of solar-energy photo-voltaic cell and wind-driven generator by lithium battery and ultracapacitor, power module is except that guaranteeing the gateway node operate as normal, also efficiently, reasonably energy is stored the long-life work of realization gateway node.
The utility model is connected with the Internet network by zigbee wireless sensor network, GPRS network, sets up the wireless sensor network system of transmission line online in real time status monitoring.The GPRS/Internet internal gateway changes into the Internet data format with the data format of GPRS network, and Surveillance center can pass through Internet, realizes the real-time power network data monitoring.
The utility model is by installing corresponding sensing equipment on transmission line, means by on-line monitoring realize for the inherent timely induction that endangers of transmission line equipment, judge the equipment running status of circuit, thereby concentrate use repairing on the equipment existing manpower and equipment.It provides reliable technique and management to ensure for device security, stable, long period, full performance high-quality operation.
Compared with prior art, the beneficial effects of the utility model are: 1, wireless sensor node designs by monitoring parameter, and is simple in structure.2, gateway node selects for use ARM9 and (SuSE) Linux OS as data processing module, can satisfy the needs of electrical network online in real time status monitoring.3, be that main source of energy is powered to gateway node with the solar-energy photo-voltaic cell,, as supplementary energy, charge to ultracapacitor with micro wind turbine generator simultaneously to lithium cell charging.The utility model is widely used in the power transmission network.
Description of drawings
Fig. 1 is a system architecture diagram of the present utility model;
Fig. 2 is an environmental parameter wireless sensor network nodes block diagram in the utility model;
Fig. 3 is a network diagram artis block diagram in the utility model;
Fig. 4 is a power principle schematic diagram in the utility model;
Fig. 5 is monitoring center's data platform structural representation in the utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing and embodiment.
A kind of wireless sensor network system that is used for the real-time power network data monitoring, see Fig. 1, this system comprises wireless sensor node 1, gateway node 2, Internet network 3 and monitoring center's data platform 4, wireless sensor node 1 is gathered grid equipment real-time running state parameter, and the parameter that collects is sent to monitoring center's data platform 4 by gateway node 2 and Internet network 3; The grid equipment real time data that 4 pairs of monitoring center's data platforms are received is monitored; Wireless sensor node 1 is connected with power module 5 with gateway node 2.
Electric transmission line isolator leakage data monitoring: because transmission line defilement and insulation electron current leakage current excursion big (several microamperes to the hundreds of milliampere), require transducer that enough big dynamic range is arranged, simultaneously because the frequency spectrum that insulator partial discharge pulse signal comprises is very wide, also require transducer to have the frequency band (several Hz are to tens MHz) of broad, the good transient response and the linearity, adopt folding mutual inductance type current sensor.
The equivalent salt deposit density data monitoring: select optical sensor power transmission line equipment salt measuring density for use, measure error is little, stable and reliable operation.Concrete which kind of model should be finalized the design after doing related experiment.
Conductor temperature and dynamic compatibilization data monitoring: the dynamic compatibilization technology is installed on-Line Monitor Device exactly on power transmission line, lead state (conductor temperature, tension force, arc heavily wait) and meteorological condition (ambient temperature, sunshine, wind speed etc.) are monitored, under the prerequisite that does not break through existing technical regulation regulation, make full use of the recessive capacity of circuit objective reality, improve the transmission capacity of transmission line.
According to above-mentioned requirements, select humidity sensor HS1101, temperature sensor AN6701S, air velocity transducer WAA15, wind transducer select for use Bafeng to transducer thunder trellis code formula, and sunshine recorder is selected the bimetallic sunshine recorder for use.
Ice covering on transmission lines snow data monitoring: the inclination/angle of wind deflection according to weight change behind the line conductor icing and insulator carries out LOAD FOR, the icing growth mechanism, conductor galloping, the theoretical research of shaft tower and gold utensil ruggedness test and insulator ice sudden strain of a muscle aspect, ice covering on transmission lines snow on-line monitoring need be gathered insulator tension and inclination angle and environmental parameter (comprising temperature, humidity, wind speed, wind direction).Temperature, humidity, wind direction, air velocity transducer are selected together above.Pressure sensor is selected the resistance strain gage pressure sensor for use, and angular transducer is selected SCA100T for use.
Power transmission line is waved data monitoring: transmission pressure wave a kind of low frequency of being meant wind the on-circular cross-section lead being produced (about 0.1-3Hz), the lead self-excited vibration of large amplitude, peak swing can reach 5-300 times of diameter of wire.Waving on-line monitoring needs the measurement environment parameter equally, needs displacement and acceleration transducer simultaneously.Displacement transducer is selected displacement sensor of variable capacitor, and acceleration transducer is selected the ADXL330 type.
Environmental parameter wireless sensor transmissions design of node:
With six integrated wireless sensor nodes of environmental parameter transducer such as temperature, humidity, wind direction, wind speed, sunshine and rainfall.Fig. 2 is an environmental parameter wireless sensor network nodes block diagram in the utility model, have above characteristics owing to wireless sensor network node among Fig. 2, in the design of node, require lower, the necessary low energy consumption of node hardware cost, the necessary Routing Protocol of supporting multi-hop.The IEEE802.15.4/ZigBee agreement has taken into full account the wireless sensor network demands of applications, has equipment power saving, reliable communications, self-organization of network, characteristics such as self-healing ability is strong, with low cost, network capacity big, network security.By these basic demands, carried out supporting the hardware designs of the wireless sensor network node of 802.15.4/ZigBee agreement.The wireless communication chips of selecting for use is CC2430, and single-chip microcomputer is C8051.Environmental parameter transducer (6) receives multichannel monitoring parameter signal.Through the simulation multiplexer, become one tunnel output, through signal conditioning circuit 16 small-signal of transducer is amplified again, behind modulus (A/D) transducer, become digital signal, handle through single-chip microcomputer, respectively the data of handling are sent into ZigBee module (CC2430), the CC2430 inside modules is solidified the ZigBee agreement, and data monitored is launched.
Other wireless senser transmission node designs:
Demand according to six monitoring subsystems, want the design current wireless sensor node, the light wireless sensor node, the pressure wireless sensor node, the displacement wireless sensor node, the acceleration wireless sensor node, microwave induced formula wireless sensor node is totally six transducers, and the node structure block diagram of these transducers is basic identical.
The gateway node design:
Gateway node receives the signal of sending from wireless sensor node.Fig. 3 is a network diagram artis block diagram in the utility model, ZigBee module 21 is selected CC 2430 radio-frequency (RF) transceiver for use in Fig. 3, the CC2430 chip has adopted the framework of CC 2420 transceiver modules, has integrated ZigBee radio frequency (RF) front end, internal memory and microcontroller on single chip.It uses 18 MCU(8051), RAM with 32KB/64KB/128KB programmable internal memory and 8KB, also comprise analog-digital converter (8 ADC), a plurality of timers (Timer), AES-128 coprocessor, WatchDog Timer (watchdog-timer), the park mode timer of 32KHZ crystal oscillator, electrify restoration circuit (Power-on-Reset), power-fail detection circuit (Brow-out-Detection), and 21 programmable I/O pins.The CC2430 chip adopts the CMOS explained hereafter, and current loss is 27mA or 25mA during work.The park mode of CC2430 and the ultrashort time response that forwards aggressive mode to are particularly suitable for those and require the very long applications of battery life.
GPRS selects MC55 module 23 for use, by the built-in ICP/IP protocol stack of MC55 module, makes application program be easy to access network by the AT commands for controlling.The advantage of this scheme is that it does not need application program, the developer carries out TCP/IP and the PPP stack of oneself, minimized like this network has been connected into a cost and the time that application program new or that existed is required, realized that the wireless dial-up GPRS of data connects.
The power module design:
For easy to maintenance, reduce cost, wireless sensor network node and gateway node are all used same model power module 5, energy obtains the operation principle of management system: EMS is made up of switch switching circuit, voltage stabilizing circuit, ultracapacitor discharge booster circuit, comparison circuit and single chip circuit six parts, and Fig. 4 is a power principle schematic diagram in the utility model.
Its operation principle is when sunlight, and solar-energy photo-voltaic cell 37 is wireless sensor node (or gateway node) power supply by voltage stabilizing circuit, simultaneously unnecessary energy is stored in the lithium battery.The energy of wind-driven generator output charges to ultracapacitor.Along with increasing of electric weight in the ultracapacitor, the voltage at its two ends constantly raises, when voltage reaches high threshold voltage, switch switching circuit is connected, single chip circuit is started working, and single chip circuit control switch commutation circuit is connected then, makes ultracapacitor begin discharge, be sensor network nodes (or gateway node) power supply promptly, simultaneously apace to lithium ion cell charging by ultracapacitor discharge booster circuit.When the voltage at ultracapacitor two ends reached low threshold voltage, switch switching circuit disconnected, and single chip circuit quits work, and then switch switching circuit is disconnected, and ultracapacitor stops discharge, and EMS is got back to initial operating state.When the voltage of solar-energy photo-voltaic cell output hangs down very much, and the wind energy motor is wireless sensor network node (or gateway node) power supply by the energy of storing in the lithium battery also because of the wind-force deficiency can not continue to the ultracapacitor charging at this moment.
Single-chip microcomputer on the EMS has adopted the energy strategy of low-power consumption: only ultracapacitor discharge during this period of time in single-chip microcomputer just start working, this greatly reduces the energy consumption of whole system, thereby has increased the stream time of wireless senser gateway node.
Fig. 5 is monitoring center's data platform structural representation in the utility model.Monitoring center's data platform 4 is located at electric power transmission company.Adopt C/S and B/S framework, integrated data base, issue and management system, on-line analysis circuit running state parameter has the functions such as early warning, trend analysis, statistical report form of multi-parameter.And can provide the auxiliary judgment of status of equipment intuitively, perhaps the operations staff is that manual analysis is carried out on the basis with the platform information, to make things convenient for the manager that decision-making and correct issuing command are provided, find that early accident potential is also in time got rid of, ensure that all the time circuit is with the kilter reliability service.
Claims (5)
1. wireless sensor network system that is used for the real-time power network data monitoring, it is characterized in that: this system comprises wireless sensor node (1), gateway node (2), Internet network (3) and monitoring center's data platform (4), wireless sensor node (1) is gathered grid equipment real-time running state parameter, and the parameter that collects is sent to monitoring center's data platform (4) by gateway node (2) and Internet network (3); Monitoring center's data platform (4) is monitored the grid equipment real time data of receiving; Described wireless sensor node (1) is connected with power module (5) with gateway node (2).
2. the wireless sensor network system that is used for the real-time power network data monitoring according to claim 1, it is characterized in that: described wireless sensor node (1) comprises data acquisition module (11), data processing module (12) and data transmission module (13), data acquisition module (11) is gathered grid equipment real-time running state parameter, and the parameter that collects is sent to data processing module (12), and the data after will handling send gateway node (2) to by data transmission module (13).
3. the wireless sensor network system that is used for the real-time power network data monitoring according to claim 1 is characterized in that: be provided with environmental parameter wireless sensor node, electric current wireless sensor node, light wireless sensor node, pressure wireless sensor node, displacement wireless sensor node, acceleration wireless sensor node and microwave induced formula wireless sensor node in wireless sensor node (1).
4. the wireless sensor network system that is used for the real-time power network data monitoring according to claim 1, it is characterized in that: described gateway node (2) comprises ZigBee module (21), processor module (22), GPRS module (23), memory (24) and sim card socket (25), ZigBee module (21) sends the data that receive to processor module (22) and handles, and the data after processor module (22) will be handled send GPRS module (23) to and send Internet network (3) to by antenna; Memory (24) is connected with processor module (22), and sim card socket (25) is connected with GPRS module (23).
5. the wireless sensor network system that is used for the real-time power network data monitoring according to claim 1 is characterized in that: described monitoring center data platform (4) comprises data collection layer (41), data analysis layer (42), data center's layer (43), data analysis layer (44), repair based on condition of component layer (45) and ultra-high-tension power transmission line (46).
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| CN2010206784518U CN201947455U (en) | 2010-12-24 | 2010-12-24 | Wireless sensor network system for monitoring data of grid in real time |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355028A (en) * | 2011-10-18 | 2012-02-15 | 南京信息职业技术学院 | Chargeable power supply of high overload resistant dynamic test system |
| CN103259336A (en) * | 2013-04-17 | 2013-08-21 | 无锡市崇安区科技创业服务中心 | High-voltage fault monitoring system based on internet of things technology |
| CN104375065A (en) * | 2014-11-12 | 2015-02-25 | 国家电网公司 | Wireless automatic electrical equipment insulating property monitoring system |
-
2010
- 2010-12-24 CN CN2010206784518U patent/CN201947455U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355028A (en) * | 2011-10-18 | 2012-02-15 | 南京信息职业技术学院 | Chargeable power supply of high overload resistant dynamic test system |
| CN103259336A (en) * | 2013-04-17 | 2013-08-21 | 无锡市崇安区科技创业服务中心 | High-voltage fault monitoring system based on internet of things technology |
| CN104375065A (en) * | 2014-11-12 | 2015-02-25 | 国家电网公司 | Wireless automatic electrical equipment insulating property monitoring system |
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Granted publication date: 20110824 Termination date: 20121224 |