CN201570856U - Intelligent monitoring unit applied to high-voltage frequency inverter - Google Patents
Intelligent monitoring unit applied to high-voltage frequency inverter Download PDFInfo
- Publication number
- CN201570856U CN201570856U CN200920246514XU CN200920246514U CN201570856U CN 201570856 U CN201570856 U CN 201570856U CN 200920246514X U CN200920246514X U CN 200920246514XU CN 200920246514 U CN200920246514 U CN 200920246514U CN 201570856 U CN201570856 U CN 201570856U
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- controlling
- man
- machine interface
- 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]
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses an intelligent monitoring unit applied to a high-voltage frequency inverter, which mainly comprises a signal acquisition module, a signal processing module, a signal control module, an external interface control module and a human-machine interface. The intelligent monitoring unit provided by the technical scheme of the utility model can monitor overheat, undervoltage, phase lack, overvoltage and overcurrent fault signals of a high-voltage frequency inverter power unit as well as the rotating speed, pressure, voltage and current and temperature signals of the entire machine of the high-voltage frequency inverter in real time; and when the conditions of overvoltage, overcurrent and overhigh temperature occur, the human-machine interface can reflect the fault state and the concrete positions of faults in real time and can automatically and timely cut off external high voltage to ensure the safety of equipment and timely provide accurate information for bringing great convenience to dealing with the problems.
Description
Technical field
The utility model relates to a kind of intelligence monitoring and controlling device, especially a kind of intelligence monitoring and controlling device that is applied on the high voltage converter.
Background technology
Along with the development of power electronic technology, frequency converter is as the product of Development of Power Electronic Technology, in the every field of national economy such as mine, industry such as metallurgy, petrochemical industry, running water, electric power is widely used, and bringing into play more and more important effect.According to Chinese Jiangxi News Network report on November 12nd, 2007, industrial electric weight accounts for 60% of whole whole society power consumption, and the heavy-duty motor power consumption accounts for 70% of whole industrial electric weight especially, under the situation of current international and domestic energy scarcity, the power consumption that reduce industrial electrical equipment, especially reduces heavy-duty motor just becomes the energy-conservation primary selection of entire society, and converter technique can realize the energy-conservation needs of industrial electrical equipment, and this technology can be widely used in the industrial electrical equipment product.The characteristics of converter technique are the service requirements according to product, and work frequency is adjusted into continuously adjustable frequency, are fit to the stepless level and smooth startup of electronic product, reduce the electrical impact and the mechanical shock of electronic product.
High voltage converter is used in the frequency control of elevator, blower fan, pump class and the compressor of industries such as mine, metallurgy, petrochemical industry, running water, electric power, because the excellent properties of frequency control, improved the running environment of these industry equipment on the one hand, on the other hand owing to used a large amount of microelectronic elements in the high voltage converter, in case certain electric elements breaks down in the equipment, will influence these equipment running status, and these equipment running status are huge to the production influence of above-mentioned industry.How to find out the state of fault message and the particular location of fault fast, how the running status of high voltage converter is monitored in real time, when breaking down, accurately understood the information and the location of fault of high voltage converter fault, obviously be very important, also be necessary.
The utility model content
Problem to be solved in the utility model is: a kind of intelligence monitoring and controlling device that can monitor running gear, malfunction and the fault particular location of high voltage converter in real time is provided.
In order to solve the problems of the technologies described above, the utility model provides a kind of intelligence monitoring and controlling device that is applied on the high voltage converter, and this intelligence monitoring and controlling device mainly is made up of signal acquisition module, signal processing module, signal controlling module, external interface control module and man-machine interface; Described signal acquisition module is used for gathering the switching value live signal and the analog quantity live signal of high voltage converter circuit, then above-mentioned live signal is sent to signal processing module; Switching value live signal and analog quantity live signal that described signal processing module is used for signal acquisition module is sent carry out decoding processing, then the live signal after the decoding processing are sent to the signal controlling module; Behind the live signal that described signal controlling module received signal processing module is sent, carrying out judgment processing is the frequency converter operating state signal, send the frequency converter operating state signal then to man-machine interface, the sending controling instruction signal is given the external interface control module simultaneously; The frequency converter operating state signal that described man-machine interface is sent the signal controlling module by industrial control configuration software is presented on the man-machine interface display screen; Described external interface control module is made the control corresponding instruction according to the control command signal that described signal controlling module is sent to external interface.
As a preferred version of the present utility model, described signal acquisition module is provided in a side of the switching value signal acquisition circuit in the power cell, described signal processing module is programmable gate array FPGA (hereinafter to be referred as FPGA), described signal controlling module is digital signal processor DSP (hereinafter to be referred as DSP), and described external interface control module is Programmable Logic Controller PLC (hereinafter to be referred as PLC); This signal acquisition circuit is transferred to FPGA by fiber optic serial after gathering digital signals such as overvoltage in power cell, overcurrent, under-voltage, overheated and phase shortage; Described FPGA carries out received serial signal after decoding processing is parallel signal, and parallel transmission is given DSP.
As another preferred version of the present utility model, described signal acquisition module is located in the high voltage converter circuitry, this signal acquisition module is the analog signal sample circuit, is used for gathering the analog signalses such as rotating speed, pressure, voltage, electric current and temperature of high voltage converter complete machine; Described signal processing module is the A/D modular converter in the digital signal processor DSP; Described signal controlling module is a digital signal processor DSP; Described external interface control module is Programmable Logic Controller PLC.
As another preferred version of the present utility model, described signal acquisition module is the analog signals Acquisition Circuit that is located at Programmable Logic Controller PLC inside, that this analog signals Acquisition Circuit is used to gather is given, transformer is overheated and overtemperature and cabinet door such as open at analog signals, and described signal processing module is the A/D modular converter in the digital signal processor DSP; Described signal controlling module is a digital signal processor DSP; Described external interface control module is above-mentioned Programmable Logic Controller PLC.
Further, described DSP connects man-machine interface and PLC by the RS232 communication modes.
Further, described DSP connects man-machine interface and PLC by the RS485 communication modes.
Further, described DSP selects TMS320F2812 type DSP for use.
Further, be provided with a fault memory module in the described man-machine interface, this fault memory module is used for the operating fault message of real time record frequency converter.
The beneficial effects of the utility model are:
1, the intelligence monitoring and controlling device that provides of the technical solution of the utility model can be monitored overheated, under-voltage, phase shortage, overvoltage and the over current fault signal of high voltage transducer power unit in real time, and the rotating speed of high voltage converter complete machine, pressure, voltage, electric current and temperature signal, when the too high situation of overvoltage, overcurrent and temperature occurring, man-machine interface can reflect malfunction and fault particular location in real time, and can in time cut off external high pressure automatically, the fail safe of assurance equipment, and information accurately in time is provided, for handling problem brings great convenience.
2, the technical characterictic of technical solutions of the utility model is to have developed original components and parts function in the high voltage converter, realizes that the cost of technical solutions of the utility model is low, helps applying of high voltage converter.
Description of drawings
Below in conjunction with the drawings and specific embodiments technical solutions of the utility model are described in further detail.
Fig. 1 is the principle schematic of the utility model intelligence monitoring and controlling device;
Fig. 2 is the utility model power cell operation intelligence monitoring and controlling device principle schematic;
Fig. 3 is the utility model complete machine operation intelligence monitoring and controlling device principle schematic.
Fig. 4 is the utility model frequency converter protection intelligence monitoring and controlling device principle schematic.
Embodiment
Fig. 1 is the supervising device principle schematic of technical solutions of the utility model, and Fig. 2, Fig. 3 and Fig. 4 are the specific embodiment schematic diagram of technical solutions of the utility model.
The composition of supervising device shown in Figure 1, annexation and each several part function are as described below: this intelligence monitoring and controlling device mainly is made up of signal acquisition module, signal processing module, signal controlling module, external interface control module and man-machine interface; Described signal acquisition module is used for gathering the switching value live signal and the analog quantity live signal of high voltage converter circuit, then above-mentioned live signal is sent to signal processing module; Switching value live signal and analog quantity live signal that described signal processing module is used for signal acquisition module is sent carry out decoding processing, then the live signal after the decoding processing are sent to the signal controlling module; Behind the live signal that described signal controlling module received signal processing module is sent, carrying out judgment processing is the frequency converter operating state signal, send the frequency converter operating state signal then to man-machine interface, the sending controling instruction signal is given the external interface control module simultaneously; The frequency converter operating state signal that described man-machine interface is sent the signal controlling module by industrial control configuration software is presented on the man-machine interface display screen; Described external interface control module is made the control corresponding instruction according to the control command signal that described signal controlling module is sent to external interface.
Power cell operation real time monitoring apparatus shown in Figure 2 utilizes the original components and parts of high voltage converter to realize monitoring function.In the power cell circuit, gather switching value signals such as overvoltage in the power cell, overcurrent, under-voltage, overheated, phase shortage with logic chip, this logic chip is exactly the switching value signal acquisition circuit, this logic chip sends the digital signal gathered to FPGA by fiber optic serial, and it is parallel signal that FPGA carries out decoding processing.Logic chip sends this parallel signal to FPGA, between FPGA and the DSP is to utilize address data bus to carry out communication, and the parallel signal that FPGA handles is transferred to DSP with prestissimo, is convenient to DSP and in time makes control command.DSP receives after the parallel signal that FPGA transmits by the address data bus communication, carry out judgment processing, afterwards, give man-machine interface, and the transmission control command signal is given external interface control module---PLC by RS232 or RS485 channel transfer frequency converter operating state signal; Man-machine interface shows malfunctions such as corresponding overcurrent, overvoltage, under-voltage, overheated and phase shortage by industrial control configuration software; When breaking down state, man-machine interface shows warning mark, and give the concrete occurrence positions that is out of order, meanwhile, DSP sends control command and gives PLC by after judging, PLC sends the instruction of cutoff high power supply to peripheral circuit such as high-voltage feedback power cabinet, high-voltage feedback power cabinet cutoff high power supply, the maintenance personal can be according to the prompting of man-machine interface and the fail safe after the high pressure outage, and safe handles problems.In converter technology, the technical staff usually utilizes FPGA to finish the frequency conversion algorithm, utilizes the decoding processing of FPGA switch amount signal in the technical solutions of the utility model, can utilize this to finish the part resource of frequency conversion algorithm FPGA; The controlled function of DSP can be utilized the required part resource with DSP of pulse generator in the Frequency Converter Control plate in the technical solutions of the utility model, also can use the DSP of a special use to finish controlled function.
Complete machine operation intelligence monitoring and controlling device shown in Figure 3, the high voltage converter complete machine is in service, requires needs to regulate motor speed according to equipment working condition, such as under control fan operation state, by rotational speed regulation and then adjusting blower pressure; The analog signals Acquisition Circuit of this complete machine operation intelligence monitoring and controlling device can collect analog signalses such as motor speed, blower pressure, voltage, electric current and temperature, this analog signals is converted to digital signal and sends to DSP through the A/D modular converter, DSP is through after the judgment processing, send the complete machine operating state signal to man-machine interface, the sending controling instruction signal is given PLC; Man-machine interface shows complete machine running statuses such as corresponding motor speed, blower pressure, electric current, voltage, temperature by industrial control configuration software.When breaking down state, man-machine interface shows warning mark, and give the concrete occurrence positions that is out of order, meanwhile, DSP sends control command and gives PLC by after judging, PLC sends the instruction of cutoff high power supply to peripheral circuit such as high-voltage feedback power cabinet, high-voltage feedback power cabinet cutoff high power supply, the maintenance personal can be according to the prompting of man-machine interface and the fail safe after the high pressure outage, and safe handles problems.A/D modular converter in the technical solutions of the utility model utilizes the inner all A/D modules of signal controlling module DSP; The controlled function of DSP can be utilized the required part resource with DSP of pulse generator in the Frequency Converter Control plate in the technical solutions of the utility model, also can use the DSP of a special use to finish controlled function.
Frequency converter protection supervising device shown in Figure 4, signal acquisition module in this supervising device is the analog signals Acquisition Circuit that is arranged on PLC inside, that this analog signals Acquisition Circuit collects is given, transformer is overheated and overtemperature and cabinet door are opened etc. after the analog signals, send to the A/D modular converter of DSP inside, this A/D modular converter converts it to digital signal, and sends to DSP, and DSP is after judgment processing, the transmit status signal is given man-machine interface, and sends instruction to PLC; When breaking down state, man-machine interface shows warning mark, and give the concrete occurrence positions that is out of order, meanwhile, DSP sends control command and gives PLC by after judging, PLC sends the instruction of cutoff high power supply to peripheral circuit such as high-voltage feedback power cabinet, high-voltage feedback power cabinet cutoff high power supply, the maintenance personal can be according to the prompting of man-machine interface and the fail safe after the high pressure outage, and safe handles problems.The controlled function of DSP can be utilized the required part resource with DSP of pulse generator in the Frequency Converter Control plate in the technical solutions of the utility model, also can use the DSP of a special use to finish controlled function.
The foregoing description is a preferred embodiment of the present utility model, and technical solutions of the utility model are not limited to foregoing description, and every equivalent transformation based on the technical solutions of the utility model principle all falls within the protection range of the present utility model.
Claims (8)
1. intelligence monitoring and controlling device that is applied on the high voltage converter, it is characterized in that: this intelligence monitoring and controlling device mainly is made up of signal acquisition module, signal processing module, signal controlling module, external interface control module and man-machine interface;
Described signal acquisition module is used for gathering the switching value live signal and the analog quantity live signal of high voltage converter circuit, then above-mentioned live signal is sent to signal processing module;
Switching value live signal and analog quantity live signal that described signal processing module is used for signal acquisition module is sent carry out decoding processing, then the live signal after the decoding processing are sent to the signal controlling module;
Behind the live signal that described signal controlling module received signal processing module is sent, carrying out judgment processing is the frequency converter operating state signal, send the frequency converter operating state signal then to man-machine interface, the sending controling instruction signal is given the external interface control module simultaneously;
The frequency converter operating state signal that described man-machine interface is sent the signal controlling module by industrial control configuration software is presented on the man-machine interface display screen;
Described external interface control module is made the control corresponding instruction according to the control command signal that described signal controlling module is sent to external interface.
2. intelligence monitoring and controlling device according to claim 1, it is characterized in that: described signal acquisition module is provided in a side of the switching value signal acquisition circuit in the power cell, described signal processing module is a programmable gate array FPGA, described signal controlling module is a digital signal processor DSP, and described external interface control module is Programmable Logic Controller PLC;
This signal acquisition circuit sends to programmable gate array FPGA by the fiber optic serial transmission after gathering overvoltage in power cell, overcurrent, under-voltage, overheated and phase shortage digital signal;
Described programmable gate array FPGA carries out received digital signal after decoding processing is parallel signal, the parallel digital signal processor DSP that sends to.
3. intelligence monitoring and controlling device according to claim 1, it is characterized in that: described signal acquisition module is located in the high voltage converter circuitry, this signal acquisition module is the analog signal sample circuit, is used for gathering rotating speed, voltage, electric current and the temperature simulation amount signal of high voltage converter complete machine; Described signal processing module is the A/D modular converter in the digital signal processor DSP; Described signal controlling module is a digital signal processor DSP; Described external interface control module is Programmable Logic Controller PLC.
4. intelligence monitoring and controlling device according to claim 1, it is characterized in that: described signal acquisition module is the analog signals Acquisition Circuit that is located at Programmable Logic Controller PLC inside, that this analog signals Acquisition Circuit is used to gather is given, transformer is overheated and overtemperature and cabinet door are opened analog signals, and described signal processing module is the A/D modular converter in the digital signal processor DSP; Described signal controlling module is a digital signal processor DSP; Described external interface control module is above-mentioned Programmable Logic Controller PLC.
5. according to claim 2,3 or 4 described arbitrary intelligence monitoring and controlling devices, it is characterized in that: described digital signal processor DSP connects man-machine interface and Programmable Logic Controller PLC by the RS232 communication modes.
6. according to claim 2,3 or 4 described arbitrary intelligence monitoring and controlling devices, it is characterized in that: described digital signal processor DSP connects man-machine interface and Programmable Logic Controller PLC by the RS485 communication modes.
7. according to claim 2,3 or 4 described arbitrary intelligence monitoring and controlling devices, it is characterized in that: described digital signal processor DSP is selected TMS320F2812 type DSP for use.
8. according to claim 2,3 or 4 described arbitrary intelligence monitoring and controlling devices, it is characterized in that: be provided with a fault memory module in the described man-machine interface, this fault memory module is used for the operating fault message of real time record frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920246514XU CN201570856U (en) | 2009-11-05 | 2009-11-05 | Intelligent monitoring unit applied to high-voltage frequency inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920246514XU CN201570856U (en) | 2009-11-05 | 2009-11-05 | Intelligent monitoring unit applied to high-voltage frequency inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201570856U true CN201570856U (en) | 2010-09-01 |
Family
ID=42663157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920246514XU Expired - Fee Related CN201570856U (en) | 2009-11-05 | 2009-11-05 | Intelligent monitoring unit applied to high-voltage frequency inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201570856U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288217A (en) * | 2011-04-12 | 2011-12-21 | 株洲变流技术国家工程研究中心有限公司 | Integrated type high-voltage frequency converter analog quantity detecting method and device |
| CN103368495A (en) * | 2013-08-02 | 2013-10-23 | 中国能源建设集团广东省电力设计研究院 | One-driven-two control method and control system of high voltage frequency converter |
| WO2014008857A1 (en) * | 2012-07-12 | 2014-01-16 | 上海电科电器科技有限公司 | Protection module for control and protective switching device |
| CN103884941A (en) * | 2014-03-28 | 2014-06-25 | 深圳市英威腾电气股份有限公司 | High-voltage inverter, power unit and method and system for testing power unit |
| CN104914333A (en) * | 2015-05-28 | 2015-09-16 | 株洲变流技术国家工程研究中心有限公司 | Remote monitoring system and method of high-voltage frequency converter |
| CN105259437A (en) * | 2015-10-14 | 2016-01-20 | 株洲变流技术国家工程研究中心有限公司 | Method for achieving fault analysis of high-voltage frequency converter |
| CN105652852A (en) * | 2015-12-21 | 2016-06-08 | 长沙奥托自动化技术有限公司 | Detection and monitoring system of high-voltage frequency converter power unit and mainboard thereof |
| CN106249086A (en) * | 2016-08-31 | 2016-12-21 | 浙江佳乐科仪股份有限公司 | A kind of aging band of large power reactor carries control equipment |
| CN107069668A (en) * | 2017-05-03 | 2017-08-18 | 北京索德电气工业有限公司 | A kind of frequency converter failure protection device and frequency converter |
| CN109255931A (en) * | 2018-09-29 | 2019-01-22 | 石狮市酷瑞电气有限责任公司 | A kind of frequency converter failure warning device and alarm system |
| CN109976209A (en) * | 2014-07-28 | 2019-07-05 | 计算系统有限公司 | The method of dcs the machine processing mechanical protection and failure prediction data |
| CN111766466A (en) * | 2020-06-28 | 2020-10-13 | 北京合康新能变频技术有限公司 | High-voltage inverter complete machine test tool system |
| CN112924797A (en) * | 2021-02-07 | 2021-06-08 | 东方日立(成都)电控设备有限公司 | Fault positioning method and system for high-voltage frequency conversion system |
-
2009
- 2009-11-05 CN CN200920246514XU patent/CN201570856U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288217A (en) * | 2011-04-12 | 2011-12-21 | 株洲变流技术国家工程研究中心有限公司 | Integrated type high-voltage frequency converter analog quantity detecting method and device |
| WO2014008857A1 (en) * | 2012-07-12 | 2014-01-16 | 上海电科电器科技有限公司 | Protection module for control and protective switching device |
| EP2874260A4 (en) * | 2012-07-12 | 2016-08-03 | Seari Electric Technology Co Ltd | Protection module for control and protective switching device |
| US9847197B2 (en) | 2012-07-12 | 2017-12-19 | Seari Electric Technology Co., Ltd. | Protection module for control and protective switching device |
| CN103368495A (en) * | 2013-08-02 | 2013-10-23 | 中国能源建设集团广东省电力设计研究院 | One-driven-two control method and control system of high voltage frequency converter |
| CN103368495B (en) * | 2013-08-02 | 2016-12-28 | 中国能源建设集团广东省电力设计研究院有限公司 | The control method of a kind of high voltage converter " one drag two " and control system |
| CN103884941A (en) * | 2014-03-28 | 2014-06-25 | 深圳市英威腾电气股份有限公司 | High-voltage inverter, power unit and method and system for testing power unit |
| CN109976209A (en) * | 2014-07-28 | 2019-07-05 | 计算系统有限公司 | The method of dcs the machine processing mechanical protection and failure prediction data |
| CN109976209B (en) * | 2014-07-28 | 2022-03-04 | 计算系统有限公司 | Mechanical health monitoring module |
| CN104914333A (en) * | 2015-05-28 | 2015-09-16 | 株洲变流技术国家工程研究中心有限公司 | Remote monitoring system and method of high-voltage frequency converter |
| CN105259437A (en) * | 2015-10-14 | 2016-01-20 | 株洲变流技术国家工程研究中心有限公司 | Method for achieving fault analysis of high-voltage frequency converter |
| CN105652852A (en) * | 2015-12-21 | 2016-06-08 | 长沙奥托自动化技术有限公司 | Detection and monitoring system of high-voltage frequency converter power unit and mainboard thereof |
| CN106249086A (en) * | 2016-08-31 | 2016-12-21 | 浙江佳乐科仪股份有限公司 | A kind of aging band of large power reactor carries control equipment |
| CN107069668B (en) * | 2017-05-03 | 2020-03-27 | 北京索德电气工业有限公司 | Frequency converter fault protection device and frequency converter |
| CN107069668A (en) * | 2017-05-03 | 2017-08-18 | 北京索德电气工业有限公司 | A kind of frequency converter failure protection device and frequency converter |
| CN109255931A (en) * | 2018-09-29 | 2019-01-22 | 石狮市酷瑞电气有限责任公司 | A kind of frequency converter failure warning device and alarm system |
| CN111766466A (en) * | 2020-06-28 | 2020-10-13 | 北京合康新能变频技术有限公司 | High-voltage inverter complete machine test tool system |
| CN112924797A (en) * | 2021-02-07 | 2021-06-08 | 东方日立(成都)电控设备有限公司 | Fault positioning method and system for high-voltage frequency conversion system |
| CN112924797B (en) * | 2021-02-07 | 2023-02-10 | 东方日立(成都)电控设备有限公司 | Fault positioning method and system for high-voltage frequency conversion system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201570856U (en) | Intelligent monitoring unit applied to high-voltage frequency inverter | |
| CN202524167U (en) | A state detection and intelligent control device for high-voltage circuit breaker | |
| CN103105796A (en) | Intelligent potential transformer (PT) automatic connection and separation switch device | |
| CN201663358U (en) | Intelligent energy consumption monitoring type three-phase distribution cabinet | |
| CN101764550A (en) | Integrated protection controller for wireless intelligent motor | |
| CN1893214A (en) | Low-voltage photovotaic parallel-in control device | |
| CN202737580U (en) | Intelligent power distribution switch equipment | |
| CN201256298Y (en) | Transforming plant voltage intelligent reactive dynamic compensation device based on field bus | |
| CN206225827U (en) | A kind of intelligent low-pressure comprehensive distribution box with plug-in type capacitance compensation | |
| CN206225828U (en) | A kind of distribution outlet of low-voltage comprehensive distribution box with plug-in type capacitance compensation and metering cabinet | |
| CN206225829U (en) | The distribution inlet wire and compensating cabinet of a kind of low-voltage comprehensive distribution box with plug-in type capacitance compensation | |
| CN207261178U (en) | A kind of wind-driven generator controls simulator | |
| CN202276135U (en) | Comprehensive protection controller for wireless intelligent motor | |
| CN201117391Y (en) | Transformer intelligent wind cooling control housing | |
| CN204082445U (en) | A kind of wind energy turbine set real-time monitoring system | |
| CN202325873U (en) | Remote centralized control device for generator set | |
| CN202423149U (en) | Low-voltage direct current circuit breaker | |
| CN201887554U (en) | Intelligent transformer monitoring system | |
| CN101783498A (en) | Modularized microcomputer motor protective monitoring device | |
| CN201408251Y (en) | Modularized microcomputer electromotor protective and monitoring device | |
| CN206422413U (en) | Comprehensive distribution box with plug-in type capacitance compensation | |
| CN104265565A (en) | Wind power plant real-time monitoring system and monitoring method | |
| CN201270410Y (en) | Motor protecting controller | |
| CN204290503U (en) | Integral intelligent AC power case | |
| CN204480043U (en) | The proving installation of pitch-variable system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Zhongkuang Huafei Technology Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Zhongkuang Huafei Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20141105 |
|
| EXPY | Termination of patent right or utility model |