CN201789336U - Remote service device for bus bar products - Google Patents
Remote service device for bus bar products Download PDFInfo
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- CN201789336U CN201789336U CN2010202447958U CN201020244795U CN201789336U CN 201789336 U CN201789336 U CN 201789336U CN 2010202447958 U CN2010202447958 U CN 2010202447958U CN 201020244795 U CN201020244795 U CN 201020244795U CN 201789336 U CN201789336 U CN 201789336U
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- bus
- cpu
- remote service
- service device
- plc
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- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The utility model relates to a remote service device for bus bar products, and belongs to the automatic control technical field of power supply and distribution. The device comprises a bus bar trunk device, an on-line monitor device and a network service device, wherein in the bus bar trunk device, each bus bar trunk unit is connected with each bus bar tap-off unit through a bus duct connector; the on-line monitor device comprises a monitor sensor, a CPU (computer processing unit), a CAN (controller area network) controller and a CAN transceiver; a current signal, a voltage signal and a temperature signal of the monitor sensor are respectively accessed to corresponding signal input terminals of the CPU; the CPU is connected with a CAN bus through the CAN controller and the CAN transceiver; a PLC (programmable logic controller ) is connected with the CAN bus; a control output terminal of the CPU is connected with an electric switch to control the on-off of a pile head of the bus bar of each tap-off unit; the PLC is connected with a PC in a two-way communication manner to conduct data exchange; and the PC and a remote diagnosis device form communication connection through the internet to conduct data exchange. The device provided by the utility achieves remote automatic control, and the data can be transmitted to the remote diagnosis device through a network, so as to provide references for failure diagnosis.
Description
Technical field
The utility model relates to a kind of bus product, relates in particular to a kind of bus product remote service device, belongs to for distribution automatic control technology field.
Background technology
The development of modern industrial technology is had higher requirement to distribution system reliability of operation and intelligent management thereof, and the increasing substantially of the extensive use of microprocessor technology and computer system security, the intelligent electrical apparatus element is rapidly developed, and bus product remote service device arises at the historic moment.Since the eighties in last century, international famous big company has successively released several industrial field bus and local communication agreement, and this development for bus product remote service device provides more senior technology platform.
Bus-duct connector is widely used as the controller switching equipment between the transmission facility between transformer and the power distribution cabinet or power distribution cabinet and the load.Bus main line device constitutes by one group of bus main line unit that is electrically connected by bus-duct connector each other and by the bus tap unit of each bus main line cell branch, and the busbar pile crown of described bus tap unit by wherein being controlled by motor switch is electrically connected with bus main line unit accordingly.
Along with the develop rapidly of China's economic construction, the demand of bus duct is being continued to increase, the bus duct product just develops towards the direction of high-performance, high-quality, many kinds.How bus duct technology and intelligent grid are combined, the power supply of building is controlled automatically and distributed, this is to need the problem that solves in the nearly stage industry.
On March 29th, 2006, publication number is the Chinese invention patent " Prediagnosis device of electric power equipment on line failure " of CN1752762, announced a kind of Prediagnosis device of electric power equipment on line failure that utilizes the voltage manner of comparison equipment and circuit to be done diagnosis, include intelligent electric power measurement and control instrument, communication device, on-site supervision main frame, be connected with the voltage measurement point of tested bus by the measuring junction of an intelligent electric power measurement and control instrument; Measuring junction by one or more intelligent electric power measurement and control instrument is connected with the voltage measurement point of tested outlet respectively, and the communication terminal of each intelligent electric power measurement and control instrument is connected with communication control unit by fieldbus; Communication control unit is connected with the on-site supervision main frame, by on-site supervision host process and video data.This invention can in time be found when the low-voltage complete device fails, but the voltage manner of comparison that it adopts determines it can only make the judgement of "Yes" and "No", can not gather concrete numerical value, does not have help for faults analysis and diagnosis.
On May 19th, 2010, publication number is the Chinese invention patent application of CN101710737A, announced a kind of bus intelligent control system, comprise bus main line device and on-Line Monitor Device, bus main line device constitutes by one group of bus main line unit that is electrically connected by bus-duct connector each other and by the bus tap unit of each bus main line cell branch, and the busbar pile crown of bus tap unit by wherein being controlled by motor switch is electrically connected with bus main line unit accordingly; On-Line Monitor Device comprises monitoring sensor spare, CPU, CAN controller and CAN transceiver; Monitoring sensor spare comprises and the current transformer of busbar pile crown coupling, the current measuring instrument that is connected with current transformer, the pressure measuring instrument in parallel with the busbar pile crown, and the temperature sensor that is placed in contiguous bus-duct connector; The output of current measuring instrument, pressure measuring instrument and temperature sensor connects the respective signal input of CPU respectively, and the temperature monitoring information with the electric current of respective bus bars tap unit, voltage and contiguous bus-duct connector passes to CPU respectively; The communication terminal of CPU connects the CAN bus by CAN controller and CAN transceiver, and PLC links to each other with the CAN bus by CAN interface adapter, in order to realize remote centralized control; The control output end of CPU connects the controlled end of motor switch, in order to according to the PLC instruction that receives, controls the break-make of corresponding tap unit busbar pile crown.This system can not analyze and diagnoses fault long-range, can not provide data for later accident analysis.
The utility model content
The technical problems to be solved in the utility model is, at the shortcoming that exists in the above prior art, proposes a kind of bus product remote service device, by the monitoring to bus duct, realizes the remote auto control to distribution system, and provides foundation for failure diagnosis.
For solving above technical problem, a kind of bus product remote service device provided by the utility model, comprise bus main line device and on-Line Monitor Device, described bus main line device constitutes by one group of bus main line unit that is electrically connected by bus-duct connector each other and by the bus tap unit of each bus main line cell branch, and the busbar pile crown of described bus tap unit by wherein being controlled by motor switch is electrically connected with bus main line unit accordingly; Described on-Line Monitor Device comprises monitoring sensor spare, CPU, CAN controller and CAN transceiver; Described monitoring sensor spare comprise with the current transformer of described busbar pile crown coupling, the current measuring instrument that is connected with described current transformer, with described busbar pile crown pressure measuring instrument in parallel, and the temperature sensor that is placed in contiguous bus-duct connector; The output of described current measuring instrument, pressure measuring instrument and temperature sensor connects the respective signal input of CPU respectively, and the temperature monitoring information with the electric current of respective bus bars tap unit, voltage and contiguous bus-duct connector passes to CPU respectively; The communication terminal of described CPU connects the CAN bus by CAN controller and CAN transceiver, and PLC links to each other with described CAN bus by CAN interface adapter; The control output end of described CPU connects the controlled end of described motor switch, according to the PLC instruction that receives, controls the break-make of corresponding tap unit busbar pile crown; This bus product remote service device also comprises PC and contains the tele-diagnostic device of parameter information such as address, electric current, voltage, temperature and failure diagnosis processing scheme standardized data library module that described tele-diagnostic device is netted with internet and is connected; Described PC is connected with described PLC both-way communication and carries out exchanges data, and described PC is provided with the network interface card interface and is connected with the internet net by the network interface card interface, and then is connected with the communication of described tele-diagnostic device formation; The data that store in the described PC are by in the corresponding data library module of the described tele-diagnostic device of Internet network typing, and the data in the described database module are passed through the Internet network-feedback to described PC.
Because the utility model is at bus duct node place mounting temperature sensor, current transformer, current measuring instrument and pressure measuring instrument are installed at tap unit busbar pile crown place, can record electric current, voltage, temperature parameter at any time and pass to CPU, realize exchanges data by CPU and CAN bus, make PLC in good time each bus main line unit of acquisition process and tap unit data and store, and control signal is fed back to the CPU of tap unit, motor switch equipment with the control corresponding site moves, thereby plays the effect of online failure monitoring.The utlity model has following advantage:
1, saves hardware investment.The on-line monitoring equipment of field bus system is dispersed in the scene, can directly carry out control and computing function, can reduce a large amount of transmitters and adjuster, computing unit etc., has saved considerable hardware investment, and can reduce the floor space in control room.
2, save mounting cost.The wiring of field bus system is very simple, can articulate several even up to a hundred equipment on the communication bus, saves installation accessories, and installation workload significantly reduces, and the workload of design and wiring check and correction also significantly reduces.
3, reduce maintenance cost.Because field control equipment has self diagnosis and certain troubleshooting capability, and relevant information being sent to the control room by digital communication, the user can monitor and inquire about the operation of all devices in real time, in time understands maintenance information, so that early stage analyze and fix a breakdown, shorten and safeguard downtime
4, the accuracy and the reliability of measurement data have been improved.Because intellectuality, the digitlization of field bus device have fundamentally improved the accuracy of measuring with control.
5, the data among the PLC are input in the PC, PC obtain by Internet net and tele-diagnostic device write to each other after, the data that store in the PC are passed through the Internet Network Transmission to tele-diagnostic device, and input database, for later accident analysis provides foundation, tele-diagnostic device is analyzed, is handled and diagnose the information of being gathered, and feedback diagnostic result, service engineering teacher can read diagnostic information by Web browser, and constantly database is safeguarded and upgraded historical data.
As preferred version of the present utility model, described current measuring instrument, pressure measuring instrument are arranged in multifunction electric meter, are connected with the respective signal input of described CPU by multifunction electric meter.
As preferred version of the present utility model, also comprise detecting units such as power, power factor, electric weight, frequency in the described multifunction electric meter.
As preferred version of the present utility model, described temperature sensor has one group of respective signal input that meets CPU by the driver that articulates.
As preferred version of the present utility model, described CPU adopts AT89C51 type single-chip microcomputer.
As preferred version of the present utility model, described PLC adopts the S7-300 control module.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the theory diagram of a preferred embodiment of the utility model.
Embodiment
As shown in Figure 1, a kind of bus product remote service device of the present utility model comprises bus main line device, on-Line Monitor Device and Web services apparatus.Bus main line device constitutes by one group of bus main line unit that is electrically connected by bus-duct connector each other and by the bus tap unit of each bus main line cell branch, and the busbar pile crown of bus tap unit by wherein being controlled by motor switch is electrically connected with bus main line unit accordingly.
On-Line Monitor Device comprises monitoring sensor spare, CPU, CAN controller and CAN transceiver, CPU preferably adopts AT89C51 type single-chip microcomputer, the CAN controller preferably adopts SJA1000 type CAN controllers, and the CAN transceiver preferably adopts AT82C250 type bus driver.
Monitoring sensor spare comprises and the current transformer of busbar pile crown coupling, the current measuring instrument that is connected with current transformer, the pressure measuring instrument in parallel with the busbar pile crown, and the temperature sensor that is placed in contiguous bus-duct connector.Current transformer is little electric current with big current transformation, is sent to current measuring instrument and measures.Temperature sensor has one group, connects the respective signal input of CPU by the driver that articulates.Current measuring instrument, pressure measuring instrument are arranged in multifunction electric meter, also comprise detecting units such as power, power factor, electric weight, frequency in the multifunction electric meter.
The output of current measuring instrument, pressure measuring instrument and temperature sensor connects the respective signal input of CPU respectively, and the temperature monitoring information with the electric current of respective bus bars tap unit, voltage and contiguous bus-duct connector passes to CPU respectively; The communication terminal of CPU connects the CAN bus by CAN controller and CAN transceiver, the S7-300 control module that PLC preferably adopts Siemens China to produce, link to each other with the CAN bus by CAN interface adapter, carry out exchanges data, realize remote centralized control, by twisted-pair feeder is the CPU of PLC and substation that AT89C51 type single-chip microcomputer is articulated on the bus, constitutes the low-level communication network.Bus allows each node equality contention bus on it, thereby can constitute the redundant network structure with many host nodes.The control output end of CPU connects the controlled end of motor switch, in order to according to the PLC instruction that receives, controls the break-make of corresponding tap unit busbar pile crown.
Tele-diagnostic device is connected with the internet net, and PC is connected with the PLC both-way communication and carries out exchanges data, and PC is provided with the network interface card interface and is connected with the internet net by the network interface card interface, and then is connected with the communication of described tele-diagnostic device formation; Tele-diagnostic device establishes the standardized data storehouse of parameter informations such as comprising address, electric current, voltage, temperature and failure diagnosis processing scheme.The standardized data storehouse is set up according to the data of the experience of fault solution before, collection, makes on-Line Monitor Device can diagnose the bus operation conditions accurately, provides reference for service engineering teacher solves fault.
In the work, PC is the communication scheduling of substation single chip computer AT 89C51 by PLC to each slave computer as host computer, presence states is shown on the touch-screen, and can independently makes the decision-making of reporting to the police.Monitoring sensor spare records electric current, voltage, temperature parameter and passes to slave computer at tap unit busbar pile crown place, and slave computer with electric current, voltage, temperature parameter with reference threshold is relatively made normal still unusual judgement.If the data exception of monitoring station, then slave computer will order this website to continue to detect and report PLC.Whether PLC sends the caution of reporting to the police, and collects the ruuning situation of each substation simultaneously, and analysis-by-synthesis is made final judgement, overload or whether transducer has fault, and control signal is fed back to the single-chip microcomputer of substation, with the motor switch equipment action of control corresponding site.
Occurring when unusual, PLC gathers the data of each bus main line unit and tap unit and stores, and data comprise parameter informations such as address information and electric current, voltage, temperature.PLC enters data in the PC, PC obtain by Internet net and tele-diagnostic device write to each other after, the data that PC stores are passed through the Internet Network Transmission to tele-diagnostic device, and input database, for later accident analysis provides foundation, tele-diagnostic device is analyzed, is handled and diagnose the information of being gathered, and feedback diagnostic result, service engineering teacher can read diagnostic information by Web browser, and constantly database is safeguarded and upgraded historical data.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all fall into the protection range of the utility model requirement.
Claims (7)
1. bus product remote service device, comprise bus main line device and on-Line Monitor Device, described bus main line device constitutes by one group of bus main line unit that is electrically connected by bus-duct connector each other and by the bus tap unit of each bus main line cell branch, and the busbar pile crown of described bus tap unit by wherein being controlled by motor switch is electrically connected with bus main line unit accordingly; Described on-Line Monitor Device comprises monitoring sensor spare, CPU, CAN controller and CAN transceiver; Described monitoring sensor spare comprise with the current transformer of described busbar pile crown coupling, the current measuring instrument that is connected with described current transformer, with described busbar pile crown pressure measuring instrument in parallel, and the temperature sensor that is placed in contiguous bus-duct connector; The output of described current measuring instrument, pressure measuring instrument and temperature sensor connects the respective signal input of CPU respectively, and the temperature monitoring information with the electric current of respective bus bars tap unit, voltage and contiguous bus-duct connector passes to CPU respectively; The communication terminal of described CPU connects the CAN bus by CAN controller and CAN transceiver, and PLC links to each other with described CAN bus by CAN interface adapter; The control output end of described CPU connects the controlled end of described motor switch, according to the PLC instruction that receives, controls the break-make of corresponding tap unit busbar pile crown; It is characterized in that: also comprise PC and contain the tele-diagnostic device of parameter information such as address, electric current, voltage, temperature and failure diagnosis processing scheme standardized data library module, described tele-diagnostic device is netted with internet and is connected; Described PC is connected with described PLC both-way communication and carries out exchanges data, and described PC is provided with the network interface card interface and is connected with the internet net by the network interface card interface, and then is connected with the communication of described tele-diagnostic device formation; The data that store in the described PC are by in the corresponding data library module of the described tele-diagnostic device of Internet network typing, and the data in the described database module are passed through the Internet network-feedback to described PC.
2. bus product remote service device according to claim 1 is characterized in that described current measuring instrument, pressure measuring instrument are arranged in multifunction electric meter, is connected with the respective signal input of described CPU by multifunction electric meter.
3. bus product remote service device according to claim 2 is characterized in that, also comprises detecting units such as power, power factor, electric weight, frequency in the described multifunction electric meter.
4. bus product remote service device according to claim 3 is characterized in that described temperature sensor has one group of respective signal input that meets CPU by the driver that articulates.
5. according to each described bus product remote service device in the claim 1 to 4, it is characterized in that described CPU adopts AT89C51 type single-chip microcomputer.
6. bus product remote service device according to claim 5 is characterized in that, described PLC adopts the S7-300 control module.
7. according to each described bus product remote service device in the claim 1 to 4, it is characterized in that described PLC adopts the S7-300 control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202447958U CN201789336U (en) | 2010-07-02 | 2010-07-02 | Remote service device for bus bar products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202447958U CN201789336U (en) | 2010-07-02 | 2010-07-02 | Remote service device for bus bar products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789336U true CN201789336U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202447958U Expired - Lifetime CN201789336U (en) | 2010-07-02 | 2010-07-02 | Remote service device for bus bar products |
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| Country | Link |
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| CN (1) | CN201789336U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545384A (en) * | 2011-12-23 | 2012-07-04 | 鲍庆宝 | Thing-connected bus system |
| CN103368015A (en) * | 2012-04-10 | 2013-10-23 | 泰科电子(上海)有限公司 | Intelligent connector and bus controller |
| CN103968230A (en) * | 2014-05-20 | 2014-08-06 | 莱芜钢铁集团有限公司 | Cabinet capacity instrument of piston type gas cabinet |
| CN104143735A (en) * | 2014-06-30 | 2014-11-12 | 江苏德驰电气有限公司 | Low-voltage bus duct instrumented connector |
| CN104368979A (en) * | 2014-11-19 | 2015-02-25 | 江苏华鹏智能电气股份有限公司 | Method for producing bus duct sectional materials |
| CN104679075A (en) * | 2015-02-11 | 2015-06-03 | 国网浙江省电力公司嘉兴供电公司 | Intelligent analyzing and monitoring system for load and temperature rise of generatrix groove |
| CN106123969A (en) * | 2016-08-29 | 2016-11-16 | 四川蜀腾母线有限公司 | Bus duct electric parameter monitors and warning system |
| CN107101786A (en) * | 2016-02-23 | 2017-08-29 | 上海鼎灿投资咨询有限公司 | A kind of air-leakage test and tele-control system |
| CN108287530A (en) * | 2017-12-29 | 2018-07-17 | 江阴弘远新能源科技有限公司 | Information data platform chain based on wind-powered electricity generation intelligent plant |
| CN111380623A (en) * | 2020-02-18 | 2020-07-07 | 广州市扬新技术研究有限责任公司 | System and method for measuring temperature of power bus |
-
2010
- 2010-07-02 CN CN2010202447958U patent/CN201789336U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545384A (en) * | 2011-12-23 | 2012-07-04 | 鲍庆宝 | Thing-connected bus system |
| CN103368015A (en) * | 2012-04-10 | 2013-10-23 | 泰科电子(上海)有限公司 | Intelligent connector and bus controller |
| CN103368015B (en) * | 2012-04-10 | 2016-08-17 | 泰科电子(上海)有限公司 | Intelligent connector and bus control unit |
| CN103968230A (en) * | 2014-05-20 | 2014-08-06 | 莱芜钢铁集团有限公司 | Cabinet capacity instrument of piston type gas cabinet |
| CN104143735A (en) * | 2014-06-30 | 2014-11-12 | 江苏德驰电气有限公司 | Low-voltage bus duct instrumented connector |
| CN104368979A (en) * | 2014-11-19 | 2015-02-25 | 江苏华鹏智能电气股份有限公司 | Method for producing bus duct sectional materials |
| CN104368979B (en) * | 2014-11-19 | 2017-01-11 | 江苏华鹏母线股份有限公司 | Method for producing bus duct sectional materials |
| CN104679075A (en) * | 2015-02-11 | 2015-06-03 | 国网浙江省电力公司嘉兴供电公司 | Intelligent analyzing and monitoring system for load and temperature rise of generatrix groove |
| CN107101786A (en) * | 2016-02-23 | 2017-08-29 | 上海鼎灿投资咨询有限公司 | A kind of air-leakage test and tele-control system |
| CN106123969A (en) * | 2016-08-29 | 2016-11-16 | 四川蜀腾母线有限公司 | Bus duct electric parameter monitors and warning system |
| CN108287530A (en) * | 2017-12-29 | 2018-07-17 | 江阴弘远新能源科技有限公司 | Information data platform chain based on wind-powered electricity generation intelligent plant |
| CN111380623A (en) * | 2020-02-18 | 2020-07-07 | 广州市扬新技术研究有限责任公司 | System and method for measuring temperature of power bus |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
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| CX01 | Expiry of patent term |