CN202093379U - Remote wireless realtime measurement and control system for wind power plant - Google Patents
Remote wireless realtime measurement and control system for wind power plant Download PDFInfo
- Publication number
- CN202093379U CN202093379U CN2011201542428U CN201120154242U CN202093379U CN 202093379 U CN202093379 U CN 202093379U CN 2011201542428 U CN2011201542428 U CN 2011201542428U CN 201120154242 U CN201120154242 U CN 201120154242U CN 202093379 U CN202093379 U CN 202093379U
- Authority
- CN
- China
- Prior art keywords
- data
- control
- module
- unit
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The utility model relates to a remote wireless realtime measurement and control system for a wind power plant, mainly composed of an in-situ intelligent measurement and control system (100), a local control centre (110) and a central remote control centre (120). The in-situ intelligent measurement and control system (100) comprises a data measurement and control terminal (101), a data transmission module (102), a data analyzing and processing module (103), a switching value detection and control module (104), a data centralizing, analyzing and processing module (105) and a GPRS wireless data transmission module (116); and the local control centre (110) and the central remote control centre (120) are each a computer. According to the utility model, the remote realtime data acquisition and control of the wind turbine generator system, the transformer station and the weather station system of the wind power plant are realized, providing realtime data for the operation management of the wind plant, the predication of a wind power and the scheduling control of a power system; and a GPRS wireless data transmission mode is adopted, having the characteristics of low construction cost, convenience in maintenance, easiness in expansion.
Description
Technical field
The utility model relates to the control and the measurement mechanism of a kind of wind farm device and operation, the real-time measurement and control system of particularly a kind of wind energy turbine set long distance wireless.
Background technology
Wind energy resources is a kind of pure green resource, is one of the most ancient on the earth, most important energy.Its huge reserves, renewable, wide, free of contamination characteristic that distributes in the world makes wind power generation become the important directions of world's regenerative resource development.Wind-powered electricity generation is one of minimum reduction of greenhouse gas discharge technology of cost, and there is the demand of huge and sustainable growth the world market for the such zero-discharge technology of wind-powered electricity generation.Wind has randomness, and for the wind-power electricity generation industry, the wind energy turbine set majority is in scarcely populated desolate and out-of-the-way ground, can not carry out manual record.Moreover these microclimate environment are abominable, so just need complete, the reliable data acquisition and monitoring of cover system to monitor the production operation situation of wind energy turbine set.
The topological network of existing wind energy turbine set supervisory system is most to adopt the wired ethernet form between the supervisory control comuter to connect.Though this wired ethernet form technology maturation, safety, reliable, because communication cable is an optical fiber, so laying expense costliness, maintenance cost is very high, and fragile, not easy-maintaining.When a large amount of use optical-fibre communications, can take a large amount of land resource.In rare epoch of this land resource nowadays, it is very unadvisable using the cable network communication.
Communication has: data radio station, spread spectrum communication, microwave communication, GSM communication, GPRS communication.Data radio station has wide coverage, emissive power is big, propagation delay time is little, convenient for installation and maintenance advantage, be suitable for a little many and disperse, the application scenario of geographical environment complexity.But because the emissive power of data radio station is big, need be to administration commission of wireless station application-specific frequency, and wireless designated lane is more crowded, and therefore in the wind energy turbine set supervisory system, data radio station uses and is subjected to certain restriction.The spread spectrum communication advantage is that antijamming capability is strong, transmission speed is high, error rate of system is low, emissive power is little, but shortcoming is that requirement communication two ends are unobstructed, and is relatively more difficult to the big city.It is few generally to be used for communication point, the occasion that required communication rate is higher.In the wind energy turbine set supervisory system, owing to have cost and aspect, region, being not easy to adopt spread spectrum communication mode is the blower fan group communication of numerous dispersion.Microwave communication is generally point-to-point transmission.Though microwave communication can be saved the expense of building wire transmission line, and has very high bandwidth, can realize very high message transmission rate, but, because less technical sophistication and the cost height of building a cover microwave telecommunication system that add of amount of communication data makes microwave communication use seldom in the wind energy turbine set supervisory system.The GSM network has saved a lot of problems that the wiring networking brings, and communication distance is unrestricted, and the GSM network coverage is wide, and reliable communications generally adopts its value-added service short message to be carrier, and simple in structure, cost is low.But real-time is poor, and communication flows is subjected to the restriction of 140 bytes of short message, so the use of GSM in the wind energy turbine set monitoring system is restricted to a great extent.GPRS is as a kind of high speed, efficient, economic wireless system, have that network coverage is wide, data bandwidth, adaptability are strong, valuation is by the advantage of flow rate calculation, real-time online, that be specially adapted to be interrupted, paroxysmal or frequent, a spot of data transmission, also be applicable to mass data transmission once in a while, satisfy the bi-directional data information transmission of data acquisition and monitoring fully.Along with the development of GPRS technology at moving communicating field, oneself also provides a kind of new data transmission communication modes for the wind energy turbine set monitoring with management system through applying to many fields that need wireless data transmission.
So, use development prospect wide in this design, the increasingly mature wireless GPRS type of attachment of technology is reconstructed the network architecture of wind energy turbine set supervisory system.Use the GPRS wireless network forms, both can save a large amount of spaces, can reduce again and drop into expense in advance, reduce maintenance cost, and be easy to carry out the network expansion, simple in structure, saved great amount of manpower.
Summary of the invention
Shortcoming and deficiency at prior art, the utility model provides a kind of real-time measurement and control system of wind energy turbine set long distance wireless based on GPRS, realize that the remote live of wind-powered electricity generation unit, transformer station, meteorological system measures and control, for the scheduling controlling of operational management, wind power prediction and the electric system of wind energy turbine set provides real time data.The technical scheme that the utility model adopted is as follows.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model is characterized in that, by intelligent observing and controlling system (100), local control center (110) and central-remote control center (120) form on the spot.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model, it is characterized in that, described intelligent observing and controlling system on the spot (100) is by data detection and control terminal (101), data transmission module (102), data analysis, processing module (103), switching value Detection ﹠ Controling module (104), data centralization, analysis and processing module (105), GPRS wireless data transmission module (106) is formed; Every cover intelligent observing and controlling system has unique ID, and correspondence is installed on a cover unit.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model, it is characterized in that, described data detection and control terminal (101), the difference according to the IO interface type of the on-the-spot observing and controlling object of wind energy turbine set comprises the some kinds of data control modules with different IO interface.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model is characterized in that, described parameter with data control module collection of different IO interface comprises meteorologic parameter: wind speed, wind direction, humidity and environment temperature; The wind power generating set parameter: wind speed round, engine speed, generator coil temperature, gear case oil temperature, gear case front and back bearings temperature, gear case vibration, hydraulic system oil temperature, oil pressure, oil level, cabin vibration, tower oscillation, low, high speed shaft vibrates, the driftage state, and make up according to nearby principle.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model, it is characterized in that, the parameter of described data control module control with different IO interface comprises: the startup of generator, stop, the height of power output etc. needs the various parameters of control, and makes up according to nearby principle.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model, it is characterized in that, described data analysis, processing module (103), comprise data analysis subelement (1031) and judgment sub-unit (1032), data analysis subelement (1031) calculates monitor data according to the parameters that data transmission unit (102) receives, described monitor data comprises the average power of wind-powered electricity generation unit, the wind speed of wind energy turbine set, wind direction, temperature, humidity and air pressure etc., whether the monitor data that judgment sub-unit (1032) judgment data analysis subunit computes obtains exceeds the range of set value that prestores, and generates command adapted thereto in view of the above.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model, it is characterized in that, described switching value Detection ﹠ Controling module (104), comprise that control signal generates subelement (1041) and output control sub unit (1042), control signal generates the instruction generation control signal corresponding that subelement (1041) sends according to judgment sub-unit (1032); The switching value output action that the control signal that output control sub unit (1042) generates according to control signal generation subelement (1041) is switched on or cut off the power supply, and produce corresponding alerting signal.
The real-time measurement and control system of wind energy turbine set long distance wireless of the present utility model, it is characterized in that, described local control center (110) and central-remote control center (120) are computing machine, constitute the telecommunication passage by internet or GPRS network adapter and intelligent observing and controlling system (100) on the spot, can preserve the various service data information of each unit of wind energy turbine set, carry out in real time or data management functions such as the demonstration of historical data, curve, inquiry, statistics, printing, and can carry out that the related remote parameter is provided with and control intelligent observing and controlling system (100) on the spot.
The beneficial effect of the technical scheme that the utility model provides is: according to nearby principle, measured parameter and control signal that the position is concentrated relatively are combined in the data control module, different according to the I/O mode of measured parameter and control signal, the data control module also has corresponding data channel, thereby can make the detection and control terminal link unitized, be convenient to maintenance management, reduce cost, improve reliability of data transmission.The different data of same wind-powered electricity generation unit or transformer station, weather station are aggregated into data centralization, analysis and the processing module of counterpart again by control module, after carrying out analyzing and processing by this module, packing links to each other with host computer through the GPRS unification, adopt such layering, hierarchical structure, not only avoided the field data signal transmission distance long, but also reduced and the direct-connected number of devices of host computer, strengthen the reliability of systematic survey and control, further reduced cost.Simultaneously, make every cover wind-powered electricity generation unit, the relative host computer of transformer station become single equipment with the weather station, regulate and control and manage convenient, for the scheduling controlling of the operational management of wind energy turbine set, wind power prediction and electric system provides real time data.
Description of drawings
Fig. 1 is the system global structure block diagram.
Fig. 2 is a signal conditioning circuit.
Fig. 3 is the circuit diagram of RS485 interface.
Fig. 4 generates loop circuit figure for control signal.
Fig. 5 is the output control circuit circuit diagram.
Fig. 6 is the structural drawing of GPRS module.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the system global structure block diagram, and the real-time measurement and control system of wind energy turbine set long distance wireless of utility model is by intelligent observing and controlling system (100), local control center (110) and central-remote control center (120) form on the spot.
Intelligent observing and controlling system (100) is by data detection and control terminal (101) on the spot, data transmission module (102), data analysis, processing module (103), switching value Detection ﹠ Controling module (104), data centralization, analysis and processing module (105), GPRS wireless data transmission module (106) is formed; Every cover intelligent observing and controlling system has unique ID, and correspondence is installed on a cover unit.
Data detection and control terminal (101), responsible technical data of gathering wind-powered electricity generation unit, transformer station, system place, weather station, the control of the line correlation of going forward side by side; According to the difference of the on-the-spot observing and controlling object of wind energy turbine set, comprise the data control module of different IO interface.The parameter of gathering comprises meteorologic parameter: wind speed, wind direction, humidity and environment temperature; The wind power generating set parameter: wind speed round, engine speed, generator coil temperature, gear case oil temperature, gear case front and back bearings temperature, gear case vibration, hydraulic system oil temperature, oil pressure, oil level, cabin vibration, tower oscillation, low, high speed shaft vibrates, the driftage state.The parameter of control comprises: the startup of generator, stop, the height of power output etc. needs the various parameters of control.And measure and control according to the nearby principle combination.
Data transmission module (102), the data transmission of data detection and control terminal (101) output is arrived data analysis, processing module (103), data analysis, processing module (103) are with data analysis, judgement and the generation control signal of data transmission module (102) output; Described switching value Detection ﹠ Controling module (104) is used for the switching value signal output action of switching on or cutting off the power supply according to the control signal that data analysis, processing module (103) generate, and produces corresponding alerting signal; Described GPRS wireless data transmission module (106), receive the output signal of data analysis, processing module (103) by the GPRS communication, and convey the received signals to local control center (110), or receive the control signal of local control center (110), and will receive the control signal of coming and be sent to data analysis, processing module (103); Described local control center (110), be used to receive the signal that GPRS wireless data transmission module (106) sends,, carry out human-machine operation and handle according to the needs of wind power generating set actual motion, assign control command to data analysis, processing module (103), be convenient to operating personnel and use.Also can directly be transferred to central-remote control center (120) by the signal of GPRS wireless data transmission module (106) output and carry out respective handling.
Data transmission module (102), the data transmission that data detection and control terminal (101) is exported arrives data analysis, processing module (103).Comprise signal conditioning circuit (1021) and RS-485 switching device interface (1022), signal conditioning circuit (1021) one ends link to each other with the intelligent acquisition module bus interface of data acquisition unit (101), the other end links to each other with RS485 switching device interface (1022), and the output interface of RS485 converter is connected with data analysis, processing module (103).The RS-485 fieldbus carries out signal condition earlier with the data that data detection and control terminal (101) is uploaded, be transferred to the RS485 converter then, the RS485 converter carries out level conversion to data, and the data upload after will changing is to data analysis, processing module (103).Fig. 2 is a signal conditioning circuit, and the front is that second order inverse filtering circuit becomes voltage signal with current signal, through the filtering amplified signal be-1.5V is to+1.5V, wherein diode D1 and D2 play the effect of protection.The back is an adding circuit, and this circuit makes its scope become 0-3V to the effect of signal start bit.Fig. 3 is the circuit diagram of RS485 interface.
Data analysis, processing module (103), data analysis, judgement and generation control signal with data transmission module (102) output adopt single-chip microcomputer as master controller.Comprise data analysis subelement (1031) and judgment sub-unit (1032).Wherein, data analysis subelement (1031) calculates monitor data according to the parameters that data transmission module (102) receives, and described monitor data comprises the average power of wind-powered electricity generation unit, wind speed, wind direction, temperature, humidity and the air pressure etc. of wind energy turbine set.Whether the monitor data that judgment sub-unit (1032) judgment data analysis subunit computes obtains exceeds the scope of the setting value that prestores, and generates command adapted thereto in view of the above.
Switching value Detection ﹠ Controling module (104) comprises that control signal generates subelement (1041) and output control sub unit (1042).Control signal generates the instruction generation control signal corresponding that subelement (1041) sends according to judgment sub-unit (1032).The state of switching value is to learn by the position signalling that detects its special auxiliary contact or signal relay contact.Fig. 4 generates loop circuit figure for control signal.T type RC low-pass filter can filter the high frequency interference in loop; Resistance R 10, R11 play the current-limiting protection effect, and diode plays the effect of protection optocoupler.The switching value output action that the control signal that output control sub unit (4012) generates according to control signal generation subelement (4011) is switched on or cut off the power supply, and produce corresponding alerting signal.Fig. 5 is the output control circuit circuit diagram, output control sub unit (4012) control isolating switch and on-load switch action, and its reliability directly reflects the system reliability of its supervisory system.
GPRS wireless data transmission module (106), receive the output signal of data analysis, processing module (103) by the GPRS communication, and convey the received signals to local control center (110), or receive the control signal of local control center (110), and will receive the control signal of coming and be sent to data analysis, processing module (103).Comprise GPRS module (1061) and serial communication modular (1062), GPRS module (1061) is communicated by letter with the single-chip microcomputer master controller by serial interface, and finishes and being connected of GPRS network under its control, thereby realizes passing mutually with the data of host computer.The structural drawing of GPRS module such as Fig. 6, the GPRS module in order to improve the factor of assurance of system, inserts back-up source for the GPRS module by RS232 interface and single chip communication, by the SIM card circuit, inserts GPRS network.GPRS module (1061) at first needs to have Auto Login feature after powering on, promptly have the function that is attached to GPRS network automatically.Secondly the GPRS transmitting terminal will have the result of data acquisition process to send to Surveillance center through GPRS network.GPRS module (1061) also will have according to the Long-distance Control information that receives and feeds back to data analysis, processing module (103) in addition.
Local control center (110), be used to receive the signal that GPRS wireless data transmission module (106) sends,, carry out human-machine operation and handle according to the needs of wind power generating set actual motion, assign control command to data analysis, processing module (103), be convenient to operating personnel and use.Remote monitoring function is divided into monitoring function and control function: monitoring function is promptly by remote data acquisition, at the service data of the real-time display monitoring object of monitoring interface or the history data of query monitor object; Control function promptly sends the control and management order by the monitored object to far-end and realizes remote control function.Remote configuration management is in order to make monitored device or the system can operate as normal or by appointment requirement work, and its operational factor is carried out Remote configuration, browses and examined.It is in order to find the fault that monitored object or system itself exists and in time to take measures to handle or eliminate fault that remote failure is handled.Remote failure is handled and is comprised malfunction monitoring, localization of fault, alarm notification, fault handling and recovery test etc.
Central-remote control center (120) and local control center (110) have identical functions, it all is computing machine, just the position is different with residing management hierarchy, also can directly be transferred to central-remote control center (120) by the signal of GPRS wireless data transmission module (106) output and carry out respective handling.
When needing in the wind energy turbine set to increase new aerogenerator, owing to adopted the GPRS radio communication, need not to lay again communications optical cable, only need to increase corresponding GPRS module and intelligent acquisition module, carry out corresponding software setting and debugging can be finished dilatation to supervisory system, convenient and save time.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. the real-time measurement and control system of wind energy turbine set long distance wireless is characterized in that, described system is by intelligent observing and controlling system (100), local control center (110) and central-remote control center (120) form on the spot.
2. system according to claim 1, it is characterized in that, described intelligent observing and controlling system on the spot (100) is by data detection and control terminal (101), data transmission module (102), data analysis, processing module (103), switching value Detection ﹠ Controling module (104), data centralization, analysis and processing module (105), GPRS wireless data transmission module (106) is formed; Every cover intelligent observing and controlling system has unique ID, and correspondence is installed on a cover unit.
3. system according to claim 2 is characterized in that, described data detection and control terminal (101), and the difference according to the IO interface type of the on-the-spot observing and controlling object of wind energy turbine set comprises the some kinds of data control modules with different IO interface.
4. system according to claim 2, it is characterized in that, described data analysis, processing module (103), comprise data analysis subelement (1031) and judgment sub-unit (1032), data analysis subelement (1031) calculates monitor data according to the parameters that data transmission unit (102) receives; Whether the monitor data that judgment sub-unit (1032) judgment data analysis subunit computes obtains exceeds the range of set value that prestores, and generates command adapted thereto in view of the above.
5. system according to claim 2, it is characterized in that, described switching value Detection ﹠ Controling module (104), comprise that control signal generates subelement (1041) and output control sub unit (1042), control signal generates the instruction generation control signal corresponding that subelement (1041) sends according to judgment sub-unit (1032); The switching value output action that the control signal that output control sub unit (1042) generates according to control signal generation subelement (1041) is switched on or cut off the power supply, and produce corresponding alerting signal.
6. system according to claim 1, it is characterized in that, described local control center (110) and central-remote control center (120) are computing machine, constitute the telecommunication passage by internet or GPRS network adapter and intelligent observing and controlling system (100) on the spot, can preserve the various service data information of each unit of wind energy turbine set, carry out demonstration, curve, inquiry, statistics, the printing function of real time data and historical data, and can carry out that the related remote parameter is provided with and control intelligent observing and controlling system (100) on the spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201542428U CN202093379U (en) | 2011-05-16 | 2011-05-16 | Remote wireless realtime measurement and control system for wind power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201542428U CN202093379U (en) | 2011-05-16 | 2011-05-16 | Remote wireless realtime measurement and control system for wind power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093379U true CN202093379U (en) | 2011-12-28 |
Family
ID=45368436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201542428U Expired - Fee Related CN202093379U (en) | 2011-05-16 | 2011-05-16 | Remote wireless realtime measurement and control system for wind power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093379U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197618A (en) * | 2013-02-22 | 2013-07-10 | 上海电机学院 | Method and system of monitoring wind-driven generator |
| CN103728942A (en) * | 2013-12-24 | 2014-04-16 | 青海能高新能源有限公司 | Local data collecting and processing system of wind generating set |
| CN104764487A (en) * | 2015-03-05 | 2015-07-08 | 浙江大学 | GPRS-based wind power gear box remote monitoring and diagnosis method |
| CN105298762A (en) * | 2015-11-27 | 2016-02-03 | 温州电力设计有限公司 | Wind power generation set maintaining and monitoring method based on 4G technology |
| CN109725627A (en) * | 2018-12-06 | 2019-05-07 | 南京信息工程大学 | A kind of wind power climbing event detection system and detection method |
| CN111240381A (en) * | 2019-11-22 | 2020-06-05 | 福建众芯成信息科技有限公司 | Agricultural greenhouse data acquisition and industrial control system |
-
2011
- 2011-05-16 CN CN2011201542428U patent/CN202093379U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197618A (en) * | 2013-02-22 | 2013-07-10 | 上海电机学院 | Method and system of monitoring wind-driven generator |
| CN103728942A (en) * | 2013-12-24 | 2014-04-16 | 青海能高新能源有限公司 | Local data collecting and processing system of wind generating set |
| CN104764487A (en) * | 2015-03-05 | 2015-07-08 | 浙江大学 | GPRS-based wind power gear box remote monitoring and diagnosis method |
| CN104764487B (en) * | 2015-03-05 | 2017-04-12 | 浙江大学 | GPRS-based wind power gear box remote monitoring and diagnosis method |
| CN105298762A (en) * | 2015-11-27 | 2016-02-03 | 温州电力设计有限公司 | Wind power generation set maintaining and monitoring method based on 4G technology |
| CN109725627A (en) * | 2018-12-06 | 2019-05-07 | 南京信息工程大学 | A kind of wind power climbing event detection system and detection method |
| CN111240381A (en) * | 2019-11-22 | 2020-06-05 | 福建众芯成信息科技有限公司 | Agricultural greenhouse data acquisition and industrial control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202093379U (en) | Remote wireless realtime measurement and control system for wind power plant | |
| CN104269937B (en) | A kind of operation monitoring system in distributed photovoltaic power station | |
| CN202033053U (en) | Multi-information integration-based integrated transmission line state monitoring device | |
| CN104898579A (en) | Oil pumping well data acquisition control system and method based on wireless network | |
| CN110446176A (en) | A kind of information transmission system and method towards wide area distribution transformer terminal unit | |
| CN103324179A (en) | Distributed-type wind power plant integrated monitoring system based on wireless network | |
| CN105406523A (en) | Monitoring method for electric vehicle charging station in photovoltaic grid-connected operation | |
| CN105119377A (en) | Super-ZigBee Internet of Things-based power grid intelligent monitoring system and method | |
| CN202422385U (en) | Intelligent networking dynamic routing far-end acquisition system for electric energy meters | |
| CN201830299U (en) | Wireless indicator data remote transmission system | |
| CN114285159B (en) | Energy control system for transformer area | |
| CN110798263A (en) | Intelligent power distribution network communication multidimensional networking structure | |
| CN113608020A (en) | Remote electric energy monitoring control system | |
| CN103605172B (en) | Be applicable to the radio data transmission method of wind energy gradient meteorological observation | |
| CN203352591U (en) | Centralized monitoring system for satellite antennas | |
| CN210924880U (en) | Network smart electric meter data acquisition system | |
| CN202617171U (en) | Heat supply network remote monitoring system based on wireless sensor network | |
| CN205070602U (en) | Electric wire netting intelligent monitoring system based on networking of super -ZigBee thing | |
| CN208568961U (en) | A kind of power circuit detection system based on electric line carrier communication technology | |
| CN206894357U (en) | A kind of distributed power source supervisory systems based on LoRa technologies | |
| CN203114528U (en) | Wind power monitoring and fault diagnosis system | |
| CN110012056A (en) | A kind of smart city water utilities remote monitoring system and method based on cloud platform | |
| CN202488213U (en) | Condition monitoring agency device and system for electric transmission line | |
| CN104199412A (en) | Wireless network-based remote monitoring system of distributed wind power plant | |
| CN205247187U (en) | Urine power station cloud monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120516 |