CN202472396U - Off-grid small wind power station monitoring system - Google Patents
Off-grid small wind power station monitoring system Download PDFInfo
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- CN202472396U CN202472396U CN2012201046761U CN201220104676U CN202472396U CN 202472396 U CN202472396 U CN 202472396U CN 2012201046761 U CN2012201046761 U CN 2012201046761U CN 201220104676 U CN201220104676 U CN 201220104676U CN 202472396 U CN202472396 U CN 202472396U
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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
- 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 the field of a wind power technology, and in particular relates to a multi-zone and multi-unit oriented off-grid small wind power station monitoring system based on the Internet of things and a cloud computing technology in the field of the monitoring technology of an off-grid small wind power station. The system comprises a wind generating set, a wireless sensor network, a hub, an IPC (industrial personal computer), a server and a client, wherein the wind generating set comprises a windmill main body, a pole and a control power supply system; the windmill main body comprises a wind wheel, a generator, a revolution body and a vibration damper; the control power supply system comprises a brake controller, a fan controller, a storage battery, an inverter and an unloading box; the windmill main body is mounted on the outdoor pole; the control power supply system, the hub and the IPC are mounted in a control room; the generator of the wind generating set and the storage battery are connected with the fan controller through a cable respectively; and a voltage sensor and a current sensor are mounted in the fan controller.
Description
Technical field
The utility model relates to the wind power technology field, more specifically to from the monitoring technique field of the small-sized wind power station of net type, be a kind of based on Internet of Things and cloud computing technology, towards the multizone multicomputer from the small-sized wind power station supervisory system of net type.
Background technology
Wind energy is a kind of regenerative resource of inexhaustible, nexhaustible clean environment firendly, will become one of topmost green energy resource of 21 century.Wind regime is the principal element that influences wind power plant efficient; Annual mean wind speed is greater than the large-scale grid type wind power plant of the suitable construction in the area of 6m/s; And annual mean wind speed be 3 ~ 5m/s the area since wind-force little, unstable, should use small-sized from net type wind power plant.China accounts for the regional annual mean wind speed in national soil 76% all at 3 ~ 5m/s, therefore develops the small-sized meaning that China is had particular importance from net type wind power station.Wind power generating set is the key equipment of wind power station, and in order to improve small-sized safe reliability and serviceable life from the operation of net type wind power station, research and development are a crucial job from the supervisory system of the small-sized wind-powered electricity generation unit of net type.
Carried out certain research aspect domestic and international at present on-line monitoring, the remote control technology at the wind-powered electricity generation unit.External many large-scale wind electricity factory has all disposed wind-powered electricity generation set state monitoring system, like companies such as Flender, Clipper, NRG.Domestic and international existing wind-powered electricity generation unit monitoring system and wind-powered electricity generation unit monitoring method be to the design of large-scale grid type wind power generating set mostly; And small-sizedly bigger difference is arranged on structures such as yaw system, thereby be not suitable for small-sized from net type wind power generating set from net type wind power generating set and large-scale grid type wind power generating set.
Summary of the invention
The purpose of the utility model is to provide a kind of from the small-sized wind power station supervisory system of net type to above-mentioned weak point; Use wireless sensor network that wind speed, wind direction and tower bar vibration situation are carried out data acquisition and transmission, gather data such as dynamo current, generator voltage, accumulator battery voltage through wired mode and gather the fan controller; Blower fan system controller is implemented protective measures such as brake and off-load to blower fan when the data of being gathered surpass predefined safety value; The service data of local each wind-powered electricity generation unit is gathered to industrial computer through hub; Industrial computer again with data upload to server, the storage computation statistical function that provides through server can each wind-powered electricity generation unit of online in real time inquiry current with history data, realize danger early warning and carry out remote on-off control; The utility model has been realized small-sized from the on-line monitoring of net type wind-powered electricity generation unit towards the multizone multicomputer.
A kind ofly take following technical scheme to realize: a kind ofly to comprise wind-powered electricity generation unit, wireless sensor network, hub, industrial computer, server and user side from the small-sized wind power station supervisory system of net type from the small-sized wind power station supervisory system of net type; The wind-powered electricity generation unit comprises wind energy conversion system main body, tower bar and control electric power system; The wind energy conversion system main body comprises wind wheel, generator, solid of revolution and vibroshock; The control electric power system comprises brake controller, controller of fan, battery pack, inverter and off-load case; The wind energy conversion system main body is installed on the outdoor tower bar; Control electric power system, hub and industrial computer are installed in the pulpit; The alternating current that the wind-powered electricity generation set generator sends becomes direct current and is stored in the battery pack through the controller of fan rectification, and the direct current of battery pack output is supplied with electrical appliance work after being reverse into alternating current through inverter; The wind-powered electricity generation set generator is connected with controller of fan through cable respectively with battery pack, and voltage sensor and current sensor are housed in the controller of fan.
Wireless sensor network is made up of at least two wireless sensor nodes, and wireless sensor node has signals collecting, MANET and radio communication function, and wireless sensor network carries out data acquisition and transmission to wind speed, wind direction and tower bar vibration situation.Wireless sensor node comprises terminal node and aggregation node, and terminal node is installed on the maintenance platform of tower masthead portion of wind-powered electricity generation unit, and aggregation node is installed in the wind-powered electricity generation unit pulpit; The ruuning situation that corresponding sensor is used to monitor blower fan is installed in said terminal node according to actual needs, and the sensor of being installed comprises air velocity transducer, wind transducer and vibration transducer at least; Terminal node is periodically gathered data such as wind speed, wind direction and the vibration of tower bar, and the data that collect are wirelessly sent to aggregation node through the Zigbee agreement, and aggregation node is given hub with the data that receive through the wire transmission of RS485 agreement.Hub gathers the image data of each controller of fan and aggregation node, and carries out data interaction with industrial computer.The data that industrial computer is uploaded hub are stored, are analyzed and data are transferred to server through Internet or GPRS; When industrial computer detected wind speed or vibrates the preset value that surpasses in the industrial computer, industrial computer sent the brake of instruction control blower fan to controller of fan.
Described aggregation node and terminal node constitute star topology, and an aggregation node can be with 255 terminal nodes at most.
Voltage sensor that is equipped with in the controller of fan and current sensor can detect dynamo current, generator voltage and accumulator battery voltage in real time; In detected data surpass controller of fan during predefined safety value, blower fan system controller is implemented to brake to blower fan and protective measures such as off-load; Described brake process is: controller of fan sends signal and gives brake controller, and brake controller drives electric pushrod, makes the wind-powered electricity generation unit brake; Described off-load process is: controller of fan stops to battery charging, and the electric energy that blower fan sends is consumed through the off-load case.
Data memory module, statistical query module, early warning module and interactive module are installed in server, can monitor the ruuning situation of each the wind-powered electricity generation unit that is connected on the server in real time.Data memory module is pressed the storage of data attribute automatic clustering; The statistical query module provides all kinds of statistical reports and can generate and derive form automatically according to query contents; The early warning module is analyzed the detection data fault that possibly occur is in time sent early warning and warning; Interactive module realizes the data interaction of user side and server, thereby realizes the remote monitoring to the wind-powered electricity generation unit.
Described user side is terminal devices such as mobile phone or computing machine; User side is through wired or wireless form access server, and can be through the running status of the control of the interactive module in access server wind-powered electricity generation unit.User side can be realized the monitoring binding function with server, is about to the IP address of user side or the wind-powered electricity generation unit of phone number and required monitoring and sets up corresponding relation, is used for the running status that the wind-powered electricity generation unit is specified in monitoring in real time.
Described wired form comprises Internet etc.; The host-host protocol of described wireless comprises agreements such as Zigbee, GPRS, CDMA and LTE.
The kernel processor chip of described industrial computer can be monokaryon or the polycaryon processor of Intel or AMD.
Described early warning module is opened the user side of monitoring binding function to detecting to reach a conclusion after data analysis is judged and in real time the early warning information form is sent to, and when user side is mobile phone, early warning information will be sent with the note form.
Said early warning module compares the various detection data that on-line monitoring system obtains with prior preset threshold; If data surpass this scope; Then send order fan controller and take the corresponding protection action; Such as accumulator battery voltage is too high then to begin automatic deloading and brake when monitoring, cross the low outwards power supply and send prompting to the user in advance of inverter that then stops when monitoring accumulator battery voltage.
A kind of method for supervising from the small-sized wind power station supervisory system of net type comprises the steps:
1) wireless sensor network carries out data acquisition and transmission to wind speed, wind direction and tower bar vibration situation: terminal node is periodically gathered wind speed, wind direction and tower bar vibration situation data; And the data that collect are wirelessly sent to aggregation node through the Zigbee agreement, aggregation node is given hub with the data that receive through the wire transmission of RS485 agreement.
2) the wind-powered electricity generation set generator is connected with controller of fan through cable respectively with battery pack, and the voltage sensor that is equipped with in the controller of fan, current sensor detect dynamo current, generator voltage and accumulator battery voltage in real time;
3) controller of fan is to step 2) data such as detected dynamo current, generator voltage and accumulator battery voltage resolve; In the data of being gathered surpass controller of fan during predefined safety value, blower fan system controller is implemented to brake to blower fan and protective measures such as off-load; Described brake process is: controller of fan sends signal and gives brake controller, and brake controller drives electric pushrod, makes the wind-powered electricity generation unit brake; Described off-load process is: controller of fan stops to battery charging, and the electric energy that blower fan sends is consumed through the off-load case.
4) carry out data interaction between hub and industrial computer: the image data of each controller of fan and aggregation node hub aggregation step 2) and in the step 1); And give industrial computer with data transmission; The blower fan brake instruction of sending from user side or industrial computer simultaneously, is distributed to corresponding blower fan through hub.
5) industrial computer is stored, is analyzed the data that transmit in the step 4) and in real time data transferred to server through Internet or GPRS.When industrial computer detected wind speed or vibrates the preset value that surpasses in the industrial computer, industrial computer sent the brake of instruction control blower fan to controller of fan.
6) user side is through wired or wireless form access server, and the running status through the control of the interactive module in access server wind-powered electricity generation unit; User side and server are realized the monitoring binding function, are about to the IP address of user side or the wind-powered electricity generation unit of phone number and required monitoring and set up corresponding relation, and the running status of wind-powered electricity generation unit is specified in monitoring in real time; And it is current with history data, danger early warning with carry out remote on-off control through each wind-powered electricity generation unit of server online in real time inquiry.
The utility model is to small-sized peculiar structure from net type wind power generating set; Bond networking is technological with cloud computing, realized can be towards the multizone multicomputer small-sized from net type wind power station online monitoring system; The utility model is easy to implement; Economical and efficient has important application value.In addition, also possess following advantage:
1, small-sized wind-powered electricity generation unit does not have wind measuring device usually and adopts tail vane or following wind direction to become the oar technology and go off course to wind; The present invention is used for the security monitoring to the wind-powered electricity generation unit through disposing information such as wireless sensor network collection wind speed, wind direction, the vibration of tower bar; The mode of comparing the wire cable Information Monitoring has characteristics easy for installation; The mode of comparing wireless collection data such as GPRS/CDMA need not to pay Internet utilization fee usefulness to Virtual network operator, has the low characteristics of operation expense.
2, the monitoring that realizes through the present invention from net type small-size wind power-generating station; Can improve the intelligent controlling level of wind power station with lower cost; The user can control the fan operation state and blower fan is carried out operations such as remote on-off, the security and the serviceable life of having improved the wind-powered electricity generation unit operation through terminal devices such as computer or mobile phones in real time.
3, wind-powered electricity generation unit production firm is through the effective ruuning situation of watch-dog of native system, thereby can carry out plant maintenance targetedly, improves customer service efficient and level, can also carry out product introduction to potential customers through native system.
4, wind regime data and the fan operation parametric statistics carried out through native system have important value to improving fan performance and researching and developing novel fan equipment.
Description of drawings
Below will combine accompanying drawing that the utility model is described further:
Figure l is a kind of principle of work synoptic diagram from the small-sized wind power station supervisory system of net type of the utility model.
Fig. 2 be the utility model a kind of in the wind-powered electricity generation unit of the small-sized wind power station supervisory system of net type signals collecting and control synoptic diagram.
Fig. 3 is a kind of wireless sensor network structural representation from the small-sized wind power station supervisory system of net type of the utility model.
Embodiment
With reference to accompanying drawing 1 ~ 3, a kind ofly comprise wind-powered electricity generation unit 1, wireless sensor network 2, hub 3, industrial computer 4, server 5 and user side 6 from the small-sized wind power station supervisory system of net type; Wind-powered electricity generation unit 1 comprises wind energy conversion system main body, tower bar and control electric power system; The wind energy conversion system main body comprises wind wheel, generator, solid of revolution and vibroshock; The control electric power system comprises brake controller, controller of fan, battery pack, inverter and off-load case; The wind energy conversion system main body is installed on the outdoor tower bar; Control electric power system, hub 3 and industrial computer 4 are installed in the pulpit; The alternating current that wind-powered electricity generation unit 1 generator sends becomes direct current and is stored in the battery pack through the controller of fan rectification, and the direct current of battery pack output is supplied with electrical appliance work after being reverse into alternating current through inverter; Wind-powered electricity generation unit 1 generator is connected with controller of fan through cable respectively with battery pack, and voltage sensor and current sensor are housed in the controller of fan.
Described aggregation node and terminal node constitute star topology, and an aggregation node can be with 255 terminal nodes at most.
The voltage sensor that is equipped with in the controller of fan, current sensor can detect dynamo current, generator voltage and accumulator battery voltage in real time; In the data that detected surpass controller of fan during predefined safety value, blower fan system controller is implemented to brake to blower fan and protective measures such as off-load; Described brake process is: controller of fan sends signal and gives brake controller, and brake controller drives electric pushrod, makes the wind-powered electricity generation unit brake; Described off-load process is: controller of fan stops to battery charging, and the electric energy that blower fan sends is consumed through the off-load case.
Data memory module, statistical query module, early warning module and interactive module are installed in server 5, can monitor the ruuning situation of each the wind-powered electricity generation unit that is connected on the server 5 in real time.Data memory module is pressed the storage of data attribute automatic clustering; The statistical query module provides all kinds of statistical reports and can generate and derive form automatically according to query contents; The early warning module is analyzed the detection data fault that possibly occur is in time sent early warning and warning; Interactive module realizes the data interaction of user side 6 and server 5, thereby realizes the remote monitoring to the wind-powered electricity generation unit.
Described user side 6 is terminal devices such as mobile phone or computing machine; User side 6 is through wired or wireless form access server, and can be through the running status of the control of the interactive module in the access server 5 wind-powered electricity generation unit 1.User side 6 can be realized the monitoring binding function with server 5, is about to the IP address of user side 6 or the wind-powered electricity generation unit 1 of phone number and required monitoring and sets up corresponding relation, is used for the running status that wind-powered electricity generation unit 1 is specified in monitoring in real time.
Described wired form comprises Internet etc.; The host-host protocol of described wireless comprises agreements such as Zigbee, GPRS, CDMA and LTE.
The kernel processor chip of described industrial computer 4 can be monokaryon or the polycaryon processor of Intel or AMD.
Described early warning module is opened the user side 6 of monitoring binding function to detecting to reach a conclusion after data analysis is judged and in real time the early warning information form is sent to, and when user side 6 is mobile phone, early warning information will be sent with the note form.
Said early warning module compares the various detection data that on-line monitoring system obtains with prior preset threshold; If data surpass this scope; Then send order fan controller and take the corresponding protection action; Such as accumulator battery voltage is too high then to begin automatic deloading and brake when monitoring, cross the low outwards power supply and send prompting to the user in advance of inverter that then stops when monitoring accumulator battery voltage.
A kind of method for supervising from the small-sized wind power station supervisory system of net type comprises the steps:
1) 2 pairs of wind speed of wireless sensor network, wind direction and tower bar vibration situation are carried out data acquisition and transmission: terminal node is periodically gathered wind speed, wind direction and tower bar vibration situation data; And the data that collect are wirelessly sent to aggregation node through the Zigbee agreement, aggregation node is given hub 3 with the data that receive through the wire transmission of RS485 agreement.
2) the wind-powered electricity generation set generator is connected with controller of fan through cable respectively with battery pack, and the voltage sensor that is equipped with in the controller of fan, current sensor detect dynamo current, generator voltage and accumulator battery voltage in real time.
3) controller of fan is to step 2) data such as dynamo current, generator voltage and accumulator battery voltage of being gathered resolve; In the data of being gathered surpass controller of fan during predefined safety value, blower fan system controller is implemented to brake to blower fan and protective measures such as off-load; Described brake process is: controller of fan sends signal and gives brake controller, and brake controller drives electric pushrod, makes wind-powered electricity generation unit 1 brake; Described off-load process is: controller of fan stops to battery charging, and the electric energy that blower fan sends is consumed through the off-load case.
4) carry out data interaction between hub and industrial computer: the image data of each controller of fan and aggregation node hub 3 aggregation step 2) and in the step 1); And give industrial computer with data transmission; The blower fan brake instruction of sending from user side or industrial computer simultaneously, is distributed to corresponding blower fan through hub.
5) data that transmit in 4 pairs of step 4) of industrial computer are stored, are analyzed and in real time data transferred to server through Internet or GPRS.
6) user side 6 is through wired or wireless form access server 5, and the running status through the control of the interactive module in the access server 5 wind-powered electricity generation unit 1; User side 6 is realized the monitoring binding function with server 5, is about to the IP address of user side 6 or the wind-powered electricity generation unit 1 of phone number and required monitoring and sets up corresponding relation, and the running status of wind-powered electricity generation unit 1 is specified in monitoring in real time; And it is current with history data, danger early warning with carry out remote on-off control through each wind-powered electricity generation unit of server 5 online in real time inquiries.
Claims (7)
1. one kind is left the small-sized wind power station supervisory system of net type, it is characterized in that: comprise wind-powered electricity generation unit, wireless sensor network, hub, industrial computer, server and user side; The wind-powered electricity generation unit comprises wind energy conversion system main body, tower bar and control electric power system; The wind energy conversion system main body comprises wind wheel, generator, solid of revolution and vibroshock; The control electric power system comprises brake controller, controller of fan, battery pack, inverter and off-load case; The wind energy conversion system main body is installed on the outdoor tower bar; Control electric power system, hub and industrial computer are installed in the pulpit; The alternating current that the wind-powered electricity generation set generator sends becomes direct current and is stored in the battery pack through the controller of fan rectification, and the direct current of battery pack output is supplied with electrical appliance work after being reverse into alternating current through inverter; The wind-powered electricity generation set generator is connected with controller of fan through cable respectively with battery pack, and voltage sensor and current sensor are housed in the controller of fan;
Wireless sensor network is made up of at least two wireless sensor nodes, and wireless sensor node comprises terminal node and aggregation node, and terminal node is installed on the maintenance platform of tower masthead portion of wind-powered electricity generation unit, and aggregation node is installed in the wind-powered electricity generation unit pulpit; The ruuning situation that corresponding sensor is used to monitor blower fan is installed in said terminal node according to actual needs, and the sensor of being installed comprises air velocity transducer, wind transducer and vibration transducer at least; Terminal node is periodically gathered data such as wind speed, wind direction and the vibration of tower bar, and the data that collect are sent to aggregation node, and aggregation node is given hub with the data transmission that receives; Hub gathers the image data of each controller of fan and aggregation node, and carries out data interaction with industrial computer; The data that industrial computer is uploaded hub are stored, are analyzed and data are transferred to server through Internet or GPRS; When industrial computer detected wind speed or vibrates the preset value that surpasses in the industrial computer, industrial computer sent the brake of instruction control blower fan to controller of fan.
2. according to claim 1 a kind of from the small-sized wind power station supervisory system of net type, it is characterized in that: described aggregation node and terminal node constitute star topology, and an aggregation node can be with 255 terminal nodes at most.
3. according to claim 1 a kind of from the small-sized wind power station supervisory system of net type; It is characterized in that: data memory module, statistical query module, early warning module and interactive module are installed in described server, and monitoring in real time is connected to the ruuning situation of each the wind-powered electricity generation unit on the server.
4. according to claim 1 a kind of from the small-sized wind power station supervisory system of net type, it is characterized in that: described user side is mobile phone or computer terminal; User side is through wired or wireless form access server, and the running status through the control of the interactive module in access server wind-powered electricity generation unit.
5. according to claim 1 or 4 described a kind of from the small-sized wind power station supervisory system of net type; It is characterized in that: described user side and server are realized the monitoring binding; Be about to the IP address of user side or the wind-powered electricity generation unit of phone number and required monitoring and set up corresponding relation, the running status of wind-powered electricity generation unit is specified in monitoring in real time.
6. according to claim 4 a kind of from the small-sized wind power station supervisory system of net type, it is characterized in that: described wired form comprises Internet, and the host-host protocol of described wireless comprises Zigbee, GPRS, CDMA and LTE agreement.
7. according to claim 1 a kind of from the small-sized wind power station supervisory system of net type, it is characterized in that: the kernel processor chip of described industrial computer is monokaryon or the polycaryon processor of Intel or AMD.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012201046761U CN202472396U (en) | 2012-03-20 | 2012-03-20 | Off-grid small wind power station monitoring system |
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| CN2012201046761U CN202472396U (en) | 2012-03-20 | 2012-03-20 | Off-grid small wind power station monitoring system |
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| CN202472396U true CN202472396U (en) | 2012-10-03 |
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| CN2012201046761U Withdrawn - After Issue CN202472396U (en) | 2012-03-20 | 2012-03-20 | Off-grid small wind power station monitoring system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541042A (en) * | 2012-03-20 | 2012-07-04 | 无锡职业技术学院 | Internet-of-things (IOT)-based monitoring system and monitoring method for off-grid small wind power plant |
| CN103472773A (en) * | 2013-08-21 | 2013-12-25 | 山西大学工程学院 | Wireless monitoring system of wind power station |
| CN106527213A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Information collection device for quickly obtaining data of wind power plant |
| CN106527212A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Robot for wind power generation field |
| CN106527211A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Data collection device for wind power plant |
| US10743088B2 (en) | 2017-02-16 | 2020-08-11 | Watlow Electric Manufacturing Company | Compact modular wireless sensor |
| CN112253390A (en) * | 2020-11-12 | 2021-01-22 | 江苏乃尔风电技术开发有限公司 | Wind driven generator and control device thereof |
-
2012
- 2012-03-20 CN CN2012201046761U patent/CN202472396U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541042A (en) * | 2012-03-20 | 2012-07-04 | 无锡职业技术学院 | Internet-of-things (IOT)-based monitoring system and monitoring method for off-grid small wind power plant |
| CN102541042B (en) * | 2012-03-20 | 2013-07-03 | 无锡职业技术学院 | Internet-of-things (IOT)-based monitoring system and monitoring method for off-grid small wind power plant |
| CN103472773A (en) * | 2013-08-21 | 2013-12-25 | 山西大学工程学院 | Wireless monitoring system of wind power station |
| CN106527213A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Information collection device for quickly obtaining data of wind power plant |
| CN106527212A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Robot for wind power generation field |
| CN106527211A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Data collection device for wind power plant |
| US10743088B2 (en) | 2017-02-16 | 2020-08-11 | Watlow Electric Manufacturing Company | Compact modular wireless sensor |
| CN112253390A (en) * | 2020-11-12 | 2021-01-22 | 江苏乃尔风电技术开发有限公司 | Wind driven generator and control device thereof |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20130703 |
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| RGAV | Abandon patent right to avoid regrant |