CN106406125A - Intelligent overvoltage protection and detection alarm device - Google Patents
Intelligent overvoltage protection and detection alarm device Download PDFInfo
- Publication number
- CN106406125A CN106406125A CN201510448920.4A CN201510448920A CN106406125A CN 106406125 A CN106406125 A CN 106406125A CN 201510448920 A CN201510448920 A CN 201510448920A CN 106406125 A CN106406125 A CN 106406125A
- Authority
- CN
- China
- Prior art keywords
- alarm device
- overvoltage protection
- detection alarm
- spark gap
- unit
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/20—Status alarms responsive to moisture
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Alarm Systems (AREA)
Abstract
An intelligent overvoltage protection and detection alarm device provided by the present invention comprises a detection unit, an execution unit and a communication alarm unit, the execution unit is connected with the detection unit and the communication alarm unit separately and comprises a data processing terminal and an auxiliary switching device, and the detection unit comprises a humidity sensor and a digital acquisition unit connected therewith. The intelligent overvoltage protection and detection alarm device of the scheme is simple in structure, reliable in performance, low in cost and strong in practicality, regulates and controls the lightning arrester damp effected faults by an online monitoring means, effectively avoids the great accidents during the operation of a power transformation system, furthest guarantees the production and life power consumption demands of the masses, enables the user satisfaction degree, the equipment maintenance level and the labor efficiency to be improved and the personal safety accidents of workers, the electrical equipment accidents and the maintenance workload of the workers to be reduced, enables a system to reach a desired target, and has a popularization value.
Description
Technical field
The present invention relates to high-voltage transforming system protection technical field, more particularly, to a kind of intelligent overvoltage protection and detection alarm device.
Background technology
In high-voltage transforming system, resistor disc makes moist, explodes in Zinc-Oxide Arrester runs, it is the fault being easiest to occur, account for the 90% about of surge arrester failure, the how fast and simple failure condition judging such spark gap, and react in time, the difficult problem that always high tension distribution system staff is faced.
The patent of Patent No. CN201020137355.2 is related to a kind of arrester wireless on-line monitoring device, including main frame, multiple wireless senser base station, multiple wireless leakage current monitoring sensors and multiple wireless voltage monitoring sensor.Distance wireless two-way data transfer is adopted between above-mentioned multiple wireless senser base station, main frame is at least connected with the communication interface of one of wireless senser base station, and sends and receives data message by this wireless senser base station to all wireless leakage currents monitoring sensors and wireless voltage monitoring sensor.The final man-machine dialog interface by main frame main control software realizes the wireless leakage current in bigger region is monitored with the functions such as parameter setting, data operation, data storage, the state estimation of tested spark gap equipment, alarm and the warning information issue of sensor and wireless voltage monitoring sensor.This utility model has the characteristics that low cost, low-power consumption, high security, highly reliable and good environmental adaptability.
However, in routine use, a preferable solution, to realize the reasonably optimizing to device, so needing a kind of intelligent overvoltage protection and detection alarm device, can not find in time and solving problems.
Content of the invention
It is an object of the invention to provide a kind of intelligent overvoltage protection and detection alarm device, the operation that it enables spark gap controls and monitors, and switches by analysis protection and voluntarily, is prevented effectively from the generation of major accident during transformer substation system runs.
Be employed technical scheme comprise that by realizing the purpose of the present invention：A kind of intelligent overvoltage protection and detection alarm device; including detector unit, performance element and communication alert unit; described performance element is connected with described detector unit, described communication alert unit respectively; described performance element includes data processing terminal and auxiliary switching device, and described detector unit includes humidity sensor and connected digital collection unit.
Described auxiliary switching device includes standby spark gap and humidity discharging dehumidifier, and described standby spark gap is in parallel with operating spark gap by switching switch.
Described humidity discharging dehumidifier includes frequency conversion fan, electric heater and the connected driving means of difference.
Described driving means include driving generator and regulating circuit, and described driving generator is PWM waveform generator, and described regulating circuit is Buck conversion circuit.
Described data processing terminal includes main control chip and connected data storage, and described main control chip is connected with described switching switch.
Described digital collection unit includes high-speed data acquisition card, and is connected with described data processing terminal by RS485 module.
Described communication alert unit includes communication network and the monitoring form interconnecting respectively, alarm device with it.
Described monitoring form includes inquiring about panel and high-clear display, and described alarm device includes audible-visual annunciator.
The intelligent overvoltage protection of the present invention and detection alarm device, it is the auxiliary detection type protection equipment being connected with spark gap under running status, can detect whether spark gap makes moist by detector unit in time, and take countermeasure, standby spark gap in device uses the spark gap equipment with operating spark gap same model same specification, humidity sensor is respectively arranged at the bottom of each spark gap, taking Zinc-Oxide Arrester as a example, it includes insulating coating and stem stem, stem stem is stacked by multiple zinc oxide resistance sheets and constitutes, humidity sensor is just arranged at the bottom of zinc oxide resistance sheet, humidity sensor is connected to high-speed figure collecting unit and the data processing terminal of achievable multichannel communication, simultaneously, data processing terminal is also associated with high-clear display.In high-voltage transforming system operation, the system one side is passed through detector unit and each spark gap failed synchronization that whether makes moist is shown on the screen of high-clear display, for staff's inquiry and observation, on the other hand, by data processing terminal according to current humidity situation and alarm signal, realize to exiting in time of the spark gap that makes moist and being incorporated in time of standby spark gap in time, be incorporated to and exit process and rely on switching switch to realize；After main control chip is compared by detection, judge the Adjusted Option of corresponding spark gap, just main control chip is relied on to send trigger, switching is switched into row energization, complete corresponding opening and closing operations, and then realization runs spark gap and the throwing of standby spark gap is moved back and cut, whole process reaction is rapider, and remove artificial judgment time and the danger of switching from, operating error is little, processing technology is simple, low cost.After the spark gap that makes moist exits, automatic humidity discharging dehumidifier, humidity discharging dehumidifier includes frequency conversion fan, electric heater and the connected driving means of difference, driving means include driving generator and regulating circuit, driving generator is PWM waveform generator, regulating circuit is Buck conversion circuit, one side heater, on the other hand, size according to current humidity, controlled the rotation speed of the fan of frequency conversion fan by driving means, make frequency conversion fan be changed into warm braw blower fan, to reach the purpose of quick humidity discharging.
Humidity sensor is arranged at spark gap bottom, sampling memory is set between humidity sensor and digital collection unit, sampling memory not only can record sensor humidity value, can also carry out record and the output of data by being connected with the other elements in shielded box；The interconnection that communication alert unit one side can be realized between unit by communication network, on the other hand can realize the monitoring display of system data and operational circumstances；Communication alert unit includes communication network and the monitoring form interconnecting with it, and communication network includes Local Sensor Network and remote wireless network, and sensor network adopts electric force carrier transmission, and remote wireless network adopts distance point-to-point transmission.Information transmission mode is to ensure that the basis of monitoring information transmission in time, and power carrier does not rely on auxiliary element, can achieve direct line transmission, is readily applicable to the sensor network of a small range interconnection；Remote wireless network both can be using gsm wireless transmission, can interconnect with various public communication network, strong interference immunity, the high communication quality, is not subject to distance limit, it would however also be possible to employ distance point-to-point transmission, GSM transmission is used by data management system, it is not necessary to use SIM, greatly reduce life-time service expense compared to for gsm wireless transmission.
Digital collection unit includes high-speed data acquisition card, and be connected with data processing terminal by RS485 module, simultaneously, the input of data collecting card can also be connected with communication network, it is to use cooperatively with data collecting card, the junction of shielded box and communication network can arrange wireless status amount harvester, carries out once collecting of data, and transmit and carry out the secondary of data to data collecting card and collect；The outfan of data collecting card passes through distance point-to-point communication; can also be connected with the server of high voltage substation control centre; server includes some Ethernet formula network switch; thus the over-pressure safety device in single region can be coupled; and rely on Local Sensor Network and remote wireless network; expand to for the supervision of all protection devices of whole transformer station, control; the control centre of whole power transformation region micro-system can also be upgraded to by advanced electric power technology of Internet of things, laid good communication network basis for extension monitoring function.
When remote wireless network adopts gsm wireless to transmit; tradition regulation and control can be improved needs special messenger's monitor in real time, the shortcoming of feedback of the information poor in timeliness; as can be in preferred GSM message mode; i.e. spark gap break down protection act when; can be by SMS to the concrete action message of administration section's feed back on-site; realize alerting in time, ageing height.
In actual use, in order to ensure safety and the accuracy of device, data processing terminal and digital collecting unit may be contained within shielded box, casing periphery setting an insulating shroud, simultaneously, environmental measurement point can be set in shielded box, for monitoring the operation conditions of operating condition near spark gap and the system.Environmental measurement point includes pressure transducer on casing, vibrating sensor and embedded temperature transducer, and embedded temperature transducer includes high-precision temperature probe and its data line connecting；Environmental measurement point is powered using POE, with the network data transmission line of Local Sensor Network for supply source circuit；It is as data transmission channel using Ethernet that POE powers, do not need specially to set up server, deployment is simple, easy to use, each monitor node is based on wireless status amount harvester, the information such as the temperature collecting, pressure are converted into digital signal, monitoring software is transmitted data to by ICP/IP protocol.Meanwhile, setting monitoring form on shielded box, monitoring form includes inquiring about panel and high-clear display, realizes showing in real time on the spot to each sampled data and service data.
Device also includes alarm device, i.e. audible-visual annunciator, is arranged near spark gap, when the humidity of zinc oxide resistance sheet exceedes setting value, alarm sound and light alarm at once, reminds relevant personnel's technology to dispose, and can be effectively prevented from spark gap inefficacy, the generation of explosion accident.
A kind of intelligent overvoltage protection of this programme and detection alarm device have the advantages that the following aspects：
1st, the system can monitor the ruuning situation of each spark gap of high voltage substation in time, and automatic decision whether there is fault of making moist, and then is automatically brought into operation, and when Failure risk occurs, standby spark gap is cut correct position in time；
2nd, the system passes through communication network, spark gap status information and operation handover information is shown it is possible in time information be reminded staff by communication in time on equipment, is easy to personnel's fast reaction；
3rd, this programme structure is simple, dependable performance, low cost, practical, by on-line monitoring, fault that spark gap is made moist regulates and controls, it is effectively prevented from the generation of major accident during transformer substation system runs, ensure the need for electricity that the people produces, lives to greatest extent, improve user satisfaction；Reduce staff's personal safety accident and electrical equipment accident；Improve plant maintenance level and labor efficiency, reduce personnel's maintenance workload；This system reaches expectation target, has promotional value.
Brief description
Fig. 1 is the structure principle chart of the present invention.
Specific embodiment
Embodiment
As shown in Figure 1; a kind of intelligent overvoltage protection and detection alarm device; including detector unit, performance element and communication alert unit; performance element is connected with detector unit, communication alert unit respectively; performance element includes data processing terminal and auxiliary switching device, and detector unit includes humidity sensor 4 and connected digital collection unit；Auxiliary switching device includes standby spark gap 8 and humidity discharging dehumidifier, and standby spark gap is in parallel with operating spark gap by switching switch；Humidity discharging dehumidifier includes frequency conversion fan 9, electric heater 10 and the connected driving means of difference；Driving means include driving generator 11 and regulating circuit 12, and driving generator is PWM waveform generator, and regulating circuit is Buck conversion circuit；Data processing terminal 7 includes main control chip 1 and connected data storage 2, and main control chip is connected with switching switch 3；Digital collection unit includes high-speed data acquisition card 5, and is connected with data processing terminal by RS485 module 6；Communication alert unit includes communication network 13 and the monitoring form interconnecting respectively, alarm device 14 with it；Monitoring form includes inquiring about panel 15 and high-clear display 16, and alarm device includes audible-visual annunciator.
The intelligent overvoltage protection of the present invention and detection alarm device, it is the auxiliary detection type protection equipment being connected with spark gap under running status, can detect whether spark gap makes moist by detector unit in time, and take countermeasure, standby spark gap in device uses the spark gap equipment with operating spark gap same model same specification, humidity sensor is respectively arranged at the bottom of each spark gap, taking Zinc-Oxide Arrester as a example, it includes insulating coating and stem stem, stem stem is stacked by multiple zinc oxide resistance sheets and constitutes, humidity sensor is just arranged at the bottom of zinc oxide resistance sheet, humidity sensor is connected to high-speed figure collecting unit and the data processing terminal of achievable multichannel communication, simultaneously, data processing terminal is also associated with high-clear display.In high-voltage transforming system operation, the system one side is passed through detector unit and each spark gap failed synchronization that whether makes moist is shown on the screen of high-clear display, for staff's inquiry and observation, on the other hand, by data processing terminal according to current humidity situation and alarm signal, realize to exiting in time of the spark gap that makes moist and being incorporated in time of standby spark gap in time, be incorporated to and exit process and rely on switching switch to realize；After main control chip is compared by detection, judge the Adjusted Option of corresponding spark gap, just main control chip is relied on to send trigger, switching is switched into row energization, complete corresponding opening and closing operations, and then realization runs spark gap and the throwing of standby spark gap is moved back and cut, whole process reaction is rapider, and remove artificial judgment time and the danger of switching from, operating error is little, processing technology is simple, low cost.After the spark gap that makes moist exits, automatic humidity discharging dehumidifier, humidity discharging dehumidifier includes frequency conversion fan, electric heater and the connected driving means of difference, driving means include driving generator and regulating circuit, driving generator is PWM waveform generator, regulating circuit is Buck conversion circuit, one side heater, on the other hand, size according to current humidity, controlled the rotation speed of the fan of frequency conversion fan by driving means, make frequency conversion fan be changed into warm braw blower fan, to reach the purpose of quick humidity discharging.
Humidity sensor is arranged at spark gap bottom, sampling memory is set between humidity sensor and digital collection unit, sampling memory not only can record sensor humidity value, can also carry out record and the output of data by being connected with the other elements in shielded box；The interconnection that communication alert unit one side can be realized between unit by communication network, on the other hand can realize the monitoring display of system data and operational circumstances；Communication alert unit includes communication network and the monitoring form interconnecting with it, and communication network includes Local Sensor Network and remote wireless network, and sensor network adopts electric force carrier transmission, and remote wireless network adopts distance point-to-point transmission.Information transmission mode is to ensure that the basis of monitoring information transmission in time, and power carrier does not rely on auxiliary element, can achieve direct line transmission, is readily applicable to the sensor network of a small range interconnection；Remote wireless network both can be using gsm wireless transmission, can interconnect with various public communication network, strong interference immunity, the high communication quality, is not subject to distance limit, it would however also be possible to employ distance point-to-point transmission, GSM transmission is used by data management system, it is not necessary to use SIM, greatly reduce life-time service expense compared to for gsm wireless transmission.
Digital collection unit includes high-speed data acquisition card, and be connected with data processing terminal by RS485 module, simultaneously, the input of data collecting card can also be connected with communication network, it is to use cooperatively with data collecting card, the junction of shielded box and communication network can arrange wireless status amount harvester, carries out once collecting of data, and transmit and carry out the secondary of data to data collecting card and collect；The outfan of data collecting card passes through distance point-to-point communication; can also be connected with the server of high voltage substation control centre; server includes some Ethernet formula network switch; thus the over-pressure safety device in single region can be coupled; and rely on Local Sensor Network and remote wireless network; expand to for the supervision of all protection devices of whole transformer station, control; the control centre of whole power transformation region micro-system can also be upgraded to by advanced electric power technology of Internet of things, laid good communication network basis for extension monitoring function.
When remote wireless network adopts gsm wireless to transmit; tradition regulation and control can be improved needs special messenger's monitor in real time, the shortcoming of feedback of the information poor in timeliness; as can be in preferred GSM message mode; i.e. spark gap break down protection act when; can be by SMS to the concrete action message of administration section's feed back on-site; realize alerting in time, ageing height.
In actual use, in order to ensure safety and the accuracy of device, data processing terminal and digital collecting unit may be contained within shielded box, casing periphery setting an insulating shroud, simultaneously, environmental measurement point can be set in shielded box, for monitoring the operation conditions of operating condition near spark gap and the system.Environmental measurement point includes pressure transducer on casing, vibrating sensor and embedded temperature transducer, and embedded temperature transducer includes high-precision temperature probe and its data line connecting；Environmental measurement point is powered using POE, with the network data transmission line of Local Sensor Network for supply source circuit；It is as data transmission channel using Ethernet that POE powers, do not need specially to set up server, deployment is simple, easy to use, each monitor node is based on wireless status amount harvester, the information such as the temperature collecting, pressure are converted into digital signal, monitoring software is transmitted data to by ICP/IP protocol.Meanwhile, setting monitoring form on shielded box, monitoring form includes inquiring about panel and high-clear display, realizes showing in real time on the spot to each sampled data and service data.
Device also includes alarm device, i.e. audible-visual annunciator, is arranged near spark gap, when the humidity of zinc oxide resistance sheet exceedes setting value, alarm sound and light alarm at once, reminds relevant personnel's technology to dispose, and can be effectively prevented from spark gap inefficacy, the generation of explosion accident.
Finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, other modifications or equivalent that those skilled in the art are made to technical scheme, without departing from the spirit and scope of technical solution of the present invention, all should cover in the middle of scope of the presently claimed invention.
Claims (8)
1. a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Including detector unit, performance element and communication alert unit, described performance element is connected with described detector unit, described communication alert unit respectively, described performance element includes data processing terminal and auxiliary switching device, and described detector unit includes humidity sensor and connected digital collection unit.
2. as claimed in claim 1 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described auxiliary switching device includes standby spark gap and humidity discharging dehumidifier, and described standby spark gap is in parallel with operating spark gap by switching switch.
3. as claimed in claim 2 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described humidity discharging dehumidifier includes frequency conversion fan, electric heater and the connected driving means of difference.
4. as claimed in claim 3 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described driving means include driving generator and regulating circuit, and described driving generator is PWM waveform generator, and described regulating circuit is Buck conversion circuit.
5. as claimed in claim 2 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described data processing terminal includes main control chip and connected data storage, and described main control chip is connected with described switching switch.
6. as claimed in claim 1 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described digital collection unit includes high-speed data acquisition card, and is connected with described data processing terminal by RS485 module.
7. as claimed in claim 1 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described communication alert unit includes communication network and the monitoring form interconnecting respectively, alarm device with it.
8. as claimed in claim 7 a kind of intelligent overvoltage protection and detection alarm device it is characterised in that：Described monitoring form includes inquiring about panel and high-clear display, and described alarm device includes audible-visual annunciator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448920.4A CN106406125A (en) | 2015-07-28 | 2015-07-28 | Intelligent overvoltage protection and detection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448920.4A CN106406125A (en) | 2015-07-28 | 2015-07-28 | Intelligent overvoltage protection and detection alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106406125A true CN106406125A (en) | 2017-02-15 |
Family
ID=58009478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510448920.4A Pending CN106406125A (en) | 2015-07-28 | 2015-07-28 | Intelligent overvoltage protection and detection alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106406125A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073619U (en) * | 1989-05-16 | 1991-03-20 | 陈达银 | Automatic changer of lightning arrester's fusing fuse |
| US5383085A (en) * | 1992-09-28 | 1995-01-17 | Siemens Aktiengesellschaft | Assembly for the discharge of electric overvoltages |
| CN201038750Y (en) * | 2007-05-10 | 2008-03-19 | 王德言 | Lightning protection square cabin |
| CN202471845U (en) * | 2011-12-07 | 2012-10-03 | 宜阳县电业局 | Lightning arrester remote on-line monitoring device |
| CN202710690U (en) * | 2012-03-06 | 2013-01-30 | 嘉兴电力局 | Lightning arrester leakage current online monitoring system based on wireless sensor network |
| CN203205851U (en) * | 2013-04-08 | 2013-09-18 | 上海臻和防雷电气技术有限责任公司 | Anti-thunder remote early warning monitoring box |
-
2015
- 2015-07-28 CN CN201510448920.4A patent/CN106406125A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073619U (en) * | 1989-05-16 | 1991-03-20 | 陈达银 | Automatic changer of lightning arrester's fusing fuse |
| US5383085A (en) * | 1992-09-28 | 1995-01-17 | Siemens Aktiengesellschaft | Assembly for the discharge of electric overvoltages |
| CN201038750Y (en) * | 2007-05-10 | 2008-03-19 | 王德言 | Lightning protection square cabin |
| CN202471845U (en) * | 2011-12-07 | 2012-10-03 | 宜阳县电业局 | Lightning arrester remote on-line monitoring device |
| CN202710690U (en) * | 2012-03-06 | 2013-01-30 | 嘉兴电力局 | Lightning arrester leakage current online monitoring system based on wireless sensor network |
| CN203205851U (en) * | 2013-04-08 | 2013-09-18 | 上海臻和防雷电气技术有限责任公司 | Anti-thunder remote early warning monitoring box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109742862B (en) | Remote control system for safe power utilization | |
| CN109787363B (en) | Safe power utilization system based on voice module | |
| CN202602375U (en) | Wind power generation box type transformer cloud terminal | |
| CN102435871A (en) | On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization | |
| CN205610353U (en) | Drop out fuse on -line monitoring system | |
| CN202998169U (en) | Intelligent power source monitoring device | |
| CN204758748U (en) | Cubical switchboard intelligent integrated monitoring devices | |
| CN105048303A (en) | Intelligent control distribution box system capable of remotely early warning | |
| CN104932395B (en) | Solar photovoltaic assembly monitors the intelligent maintenance device and maintaining method of system | |
| CN106160660A (en) | photovoltaic module fault monitoring system | |
| CN209676004U (en) | A kind of the wireless monitor detector and system of electric line safe operation | |
| CN207067754U (en) | A kind of generating set remote monitoring system | |
| CN204155435U (en) | A kind of wireless temperature acquisition system | |
| CN202309221U (en) | Wireless temperature and humidity monitoring device for high-voltage switch cabinets | |
| CN115356665A (en) | Multifunctional online monitoring method for outdoor drop-out fusion tube | |
| CN207753502U (en) | Automate main website novel maintenance monitoring system | |
| CN109980782A (en) | A kind of the wireless monitor detector and system of electric line safe operation | |
| CN211698656U (en) | Safe operation and maintenance module and intelligent compact shelf applying same | |
| CN102118060A (en) | Control method and system for intelligent digital automatic power transmission and distribution | |
| CN107546856A (en) | A kind of ring-main unit comprehensive monitoring system | |
| CN203787795U (en) | Safe low-voltage distribution box | |
| CN111582657A (en) | Intelligent community electricity utilization safety management system | |
| CN202814597U (en) | High-voltage power transmission line temperature measuring system | |
| CN202815559U (en) | Intelligent power distribution room management system | |
| CN207460095U (en) | A kind of intelligent photovoltaic combiner box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |