CN205103345U - Monitoring system of looped netowrk cabinet - Google Patents
Monitoring system of looped netowrk cabinet Download PDFInfo
- Publication number
- CN205103345U CN205103345U CN201520909042.7U CN201520909042U CN205103345U CN 205103345 U CN205103345 U CN 205103345U CN 201520909042 U CN201520909042 U CN 201520909042U CN 205103345 U CN205103345 U CN 205103345U
- Authority
- CN
- China
- Prior art keywords
- monitoring
- monitoring system
- transmission cable
- signal
- alarm
- 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.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 89
- 230000005540 biological transmission Effects 0.000 claims abstract description 62
- 238000012806 monitoring device Methods 0.000 claims abstract description 27
- 239000000523 sample Substances 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 18
- 229910018503 SF6 Inorganic materials 0.000 claims description 8
- 230000005236 sound signal Effects 0.000 claims description 8
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 8
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 8
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 22
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005577 local transmission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a monitoring system of looped netowrk cabinet. This monitoring system just still includes electric current signal collector, temperature transducer and information monitoring devices including connecting the transmission cable between the looped netowrk cabinet of difference, wherein, electric current signal collector is connected with the transmission cable, temperature measurement sensor settings is on the transmission cable to signal collector is connected with the electric current, information monitoring devices is connected with electric current signal collector and temperature transducer respectively, and information monitoring devices is used for generating the monitoring results of electric current and temperature. The utility model provides an in the correlation technique monitoring system of looped netowrk cabinet gather the signal accuracy and low and monitor unsafe technical problem.
Description
Technical field
The utility model relates to power domain, in particular to a kind of monitoring system of ring main unit.
Background technology
Ring main unit has at confession electrical domain to be applied comparatively widely, and in the construction of local transmission network, played very important effect.At present, matured product be there is no for ring main unit comprehensive intelligent monitoring aspect both at home and abroad, the fault detector used, its sensor cannot measure electric current, simultaneous faults judges that precision is low, error is comparatively large, and the shortcoming such as a temperature instruction detecting box environment temperature, and in correlation technique, the monitoring system collection signal degree of accuracy of ring main unit is low and monitor inaccurate.
For above-mentioned problem, at present effective solution is not yet proposed.
Utility model content
The utility model embodiment provides a kind of monitoring system of ring main unit, low and monitor inaccurate technical matters with the monitoring system collection signal degree of accuracy at least solving ring main unit in correlation technique.
According to an aspect of the utility model embodiment, provide a kind of monitoring system of ring main unit, it comprises the transmission cable be connected between different ring main units, and also comprises current signal collector, temperature probe and information monitoring device; Wherein, current signal collector is connected with transmission cable; Temperature probe is arranged on transmission cable, and is connected with current signal collector; Information monitoring device is connected with temperature probe with current signal collector respectively, and information monitoring device is for generating the monitoring result of electric current and temperature.
Further, current signal collector is current transformer.
Further, current transformer is also for powering for ring main unit.
Further, also comprise: for showing the display device of monitoring result.
Further, display device is liquid crystal display.
Further, information monitoring device is also for generating alarm signal according to monitoring result.
Further, also comprise: for carrying out the alarm device of alarm according to alarm signal.
Further, alarm signal is sound signal, and alarm device is loudspeaker, for playing audio signal; Or alarm signal is light signal, alarm device is light crossing-signal, for display light signal.
Further, also comprise: for sending the communication device of monitoring result.
Further, also comprise: for receiving the host computer of the monitoring result that communication device sends.
Further, also comprise: sulfur hexafluoride gas monitoring device, this sulfur hexafluoride gas monitoring device is connected on transmission cable.
In the utility model embodiment, adopt the monitoring system of ring main unit, this monitoring system comprises: the transmission cable be connected with ring main unit, for transmission current; Current signal collector, is connected with transmission cable, can be used in the current value detecting electric current, and generates the failure message indicating transmission cable to break down according to current value; Temperature probe, to be arranged on transmission cable and to be connected with current signal collector, can be used in the temperature detecting transmission cable; Information monitoring device, be connected with current signal collector and temperature probe respectively, can be used in generating monitoring result according to the temperature of failure message and transmission cable, and then the monitoring system collection signal degree of accuracy solving ring main unit in correlation technique is low and monitor inaccurate technical matters, thus reach the object that also can realize fault current detection while of can realizing current measurement, by temperature probe being arranged on the highest cable end position of failure rate, temperature monitoring and alarm integrated technique effect can also be realized.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the monitoring system of ring main unit in a kind of embodiment of the utility model.
Wherein, Reference numeral is as follows:
10, ring main unit; 12, transmission cable; 14, current signal collector; 16, temperature probe; 18, information monitoring device.
Embodiment
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in instructions of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
The utility model provides a kind of structural representation of monitoring system of ring main unit 10, as shown in Figure 1, this monitoring system comprises the transmission cable 12 be connected between different ring main units 10, and also comprises current signal collector 14, temperature probe 16 and information monitoring device 18; Wherein, current signal collector 14 is connected with transmission cable 12; Temperature probe 16 is arranged on transmission cable 12, and is connected with current signal collector 14; Information monitoring device 18 is connected with temperature probe 16 with current signal collector 14 respectively, and information monitoring device 18 is for generating the monitoring result of electric current and temperature.
In above-mentioned monitoring system, transmission cable 12 can be used in transmission current; Current signal collector 14 is connected with transmission cable 12, can be used in the current value detecting electric current, and generates the failure message indicating transmission cable 12 to break down according to current value; Temperature probe 16 can be used in the temperature detecting transmission cable 12; Information monitoring device 18 is connected with current signal collector 14 and temperature probe 16 respectively, can be used in generating monitoring result according to the temperature of failure message and transmission cable 12, and then the monitoring system collection signal degree of accuracy solving ring main unit 10 in correlation technique is low and monitor inaccurate technical matters, thus reach the object that also can realize fault current detection while of can realizing current measurement, by temperature probe 16 is arranged on the highest cable end position of failure rate, temperature monitoring and alarm integrated technique effect can also be realized.
Particularly, above-mentioned temperature probe 16 can be arranged on transmission cable 12, such as temperature probe 16 can be arranged on the cable end position of the highest transmission cable of failure rate 12, to detect the temperature of transmission cable 12, and in prior art, only detect the cabinet environment temperature of ring main unit 10, temperature monitoring is not carried out for the cable end part as ring main unit 10 major failure point.
Alternatively, in the present embodiment, current signal collector 14 is current transformer.
Particularly, current transformer can be adopted to be connected to detect the current value of electric current with transmission cable 12, and the failure message indicating this transmission cable 12 to break down is generated according to above-mentioned current value, such as, current transformer can select open type current transformer, it should be noted that, in the present embodiment, current transformer is adopted to replace traditional sensor, in addition, Optical Fiber Transmission can also be replaced with wire, make breakdown judge more accurately, reliably.
Alternatively, in the present embodiment, current transformer is also for powering for ring main unit 10.
Particularly, current transformer is also for powering for ring main unit 10, now, current transformer is as power supply, for passive ring main unit 10 realizes current transformer power supply, solving monitor when not being with internal battery, can be its power supply by current transformer, solve the problem that ring main unit 10 panel meter is limited by battery life.
Alternatively, in the present embodiment, the monitoring system of ring main unit 10 also comprises display device, for showing monitoring result.
Particularly, the monitoring system of ring main unit 10 also comprises display device, after information monitoring device 18 generates testing result according to the temperature of failure message and transmission cable 12, shows above-mentioned testing result.
Alternatively, in the present embodiment, display device is liquid crystal display LCD, LiquidCrystalDisplay.
Alternatively, in the present embodiment, information monitoring device 18 is also for generating alarm signal according to monitoring result.
Alternatively, in the present embodiment, the monitoring system of ring main unit 10 also comprises alarm device, and this alarm device is used for carrying out alarm according to alarm signal.
Particularly, the monitoring system of ring main unit 10 also comprises alarm device, this alarm device is used for carrying out alarm according to alarm signal, such as, after temperature is become electric signal by temperature probe 16, be sent to single-chip microcomputer through analog to digital conversion to calculate, temperature is demonstrated by LCD display, the temperature of the monitoring system on-line monitoring cable end of above-mentioned ring main unit 10, when this temperature anomaly by alarm device alarm, further, the monitoring system of ring main unit 10 also possesses event recording function (SOE, Sequenceofevent), record trouble electric current generation time and peak value, the alarm on the spot of short circuit grounding fault, cable head temperature delta data record, temperature beyond limit is alarm on the spot, achieve temperature monitoring and alarm integrated.
It should be noted that, the monitoring function of the monitoring system of ring main unit 10, can concentrate and indicate on the spot by LCD display is unified: by unified indicating device on the panel of switch cubicle, machinery instruction, trouble spot, cable head temperature, fault current etc. are concentrated and indicates on the spot, realization to active management, reduces handling cost to the passive maintenance of ring main unit 10 equipment.
Alternatively, in the present embodiment, alarm signal is sound signal, and alarm device is loudspeaker, for playing audio signal; Or alarm signal is light signal, alarm device is light crossing-signal, for display light signal.
Particularly, above-mentioned alarm signal can be sound signal, and alarm device is now loudspeaker, for playing audio signal; Or alarm signal can be light signal, alarm device time secondary is light crossing-signal, for display light signal.
Alternatively, in the present embodiment, the monitoring system of ring main unit 10 also comprises: for sending the communication device of monitoring result.
Particularly, the monitoring system of ring main unit 10 also comprises communication device, this communication device is for sending monitoring result, it should be noted that, can by wired or wireless mode and field data transmission unit DTU, DataTransferUnit communication, failure message passed to a distant place by DTU or utilize special transponder by general packet radio service technology GPRS, GeneralPacketRadioService and distant place communication, solve in prior art, need the monitoring of will overlap product mix more and could realize ring main unit 10, electric current indicates, fault alarm, the states such as temperature instruction adopt respective a set of sensor and instrument respectively, various testing result cannot be gathered and surveillance (SCADA by electrical network channel uploading data, SupervisoryControlAndDataAcquisition) problem.
It can thus be appreciated that, monitoring system collection signal degree of accuracy for ring main unit in correlation technique 10 is low, monitor inaccurate problem, the utility model proposes a kind of monitoring system of ring main unit 10, by current signal collector 14, wherein this current signal collector 14 is connected with transmission cable 12, detect the current value of electric current, and generate the failure message indicating transmission cable 12 to break down according to current value, temperature probe 16, to be arranged on transmission cable 12 and to be connected with current signal collector 14, for detecting the temperature of transmission cable 12, information monitoring device 18, be connected with current signal collector 14 and temperature probe 16 respectively, monitoring result is generated for the temperature according to failure message and transmission cable 12, thus reach the object that also can realize fault current detection while of can realizing current measurement, can also by temperature probe 16 be arranged on the highest cable end position of failure rate, realize temperature monitoring and alarm integrated, wherein, adopt current transformer as signal gathering unit, report to the police more accurate, install temperature probe 16 and the wiring of switch auxiliary contact additional simultaneously, just electric current can be indicated, fault alarm, temperature instruction is shown by LCD, further, the monitoring system of this ring main unit 10 additionally provides communication module, various monitoring result can upload SCADA system by electrical network channel, the Integral lifting automatization level of ring main unit 10.
Alternatively, in the present embodiment, also comprise: for receiving the host computer of the monitoring result that communication device sends.In the observation process of reality, multiple communication device is connected between different ring main units 10, and one or several ring main unit 10 is in same switchgear building.Host computer for receiving the monitoring result that each communication device sends being set, the situation such as electric current, temperature in each switchgear building can being monitored at host computer place simultaneously, make observation process more convenient.This host computer is arranged in communication main website usually, and monitoring result is sent to host computer place by wireless or wired mode by the communication device in each switchgear building.
Alternatively, in the present embodiment, also comprise: sulfur hexafluoride gas monitoring device, this sulfur hexafluoride gas monitoring device is connected on transmission cable.This sulfur hexafluoride gas monitoring device can the leakage situation of Real-Time Monitoring sulfur hexafluoride gas, to improve security.
The following correspondence monitoring method of above-mentioned ring main unit monitoring system is described in detail, and the method comprises the steps:
Step S32, detect the current value of the electric current obtained through transmission cable transmission, wherein, transmission cable is connected with ring main unit;
Step S34, the current value according to electric current generates the failure message indicating transmission cable to break down;
Step S36, detects the temperature of transmission cable;
In the application above-mentioned steps S36, can by the temperature of the cable end position of the highest transmission cable of detection failure rate, obtain the temperature of this transmission cable, and in prior art, only detect the cabinet environment temperature of ring main unit, temperature monitoring is not carried out for the cable end part as ring main unit major failure point.
Step S38, the temperature according to failure message and transmission cable generates monitoring result.
This monitoring method, by detecting the current value of the electric current obtained through transmission cable transmission, wherein, transmission cable is connected with ring main unit; Current value according to electric current generates the failure message indicating transmission cable to break down; Detect the temperature of transmission cable; Temperature according to failure message and transmission cable generates monitoring result, solve the monitoring system collection signal degree of accuracy of ring main unit in correlation technique low and monitor inaccurate technical matters, on the one hand, gather current signal by current signal collector, current measurement can be realized and also can realize fault current detection simultaneously; On the other hand, can also by temperature probe being arranged on the highest cable end position of failure rate, realize temperature monitoring and alarm integrated.
It can thus be appreciated that, monitoring system collection signal degree of accuracy for ring main unit in correlation technique is low, monitor inaccurate problem, the utility model proposes a kind of monitoring method of ring main unit, by detecting the current value of the electric current obtained through transmission cable transmission, wherein, transmission cable is connected with ring main unit, current value according to electric current generates the failure message indicating transmission cable to break down, detect the temperature of transmission cable, temperature according to failure message and transmission cable generates monitoring result, the monitoring system collection signal degree of accuracy solving ring main unit in correlation technique is low, and monitor inaccurate technical matters, thus reach the object that also can realize fault current detection while of can realizing current measurement, can also by temperature probe being arranged on the highest cable end position of failure rate, realize temperature monitoring and alarm integrated, wherein, adopt current transformer as signal gathering unit, report to the police more accurate, install temperature probe and the wiring of switch auxiliary contact additional simultaneously, just electric current can be indicated, fault alarm, temperature instruction is shown by LCD, further, the monitoring system of this ring main unit additionally provides communication module, various monitoring result can upload SCADA system by electrical network channel, the Integral lifting automatization level of ring main unit.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the division of such as unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical solution of the utility model contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the utility model.And aforesaid storage medium comprises: USB flash disk, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (11)
1. the monitoring system of a ring main unit, it is characterized in that, comprise the transmission cable (12) be connected between different ring main units (10), and also comprise current signal collector (14), temperature probe (16) and information monitoring device (18); Wherein, described current signal collector (14) is connected with described transmission cable (12); Described temperature probe (16) is arranged on described transmission cable (12), and is connected with described current signal collector (14); Described information monitoring device (18) is connected with described temperature probe (16) with described current signal collector (14) respectively, and described information monitoring device (18) is for generating the monitoring result of electric current and temperature.
2. monitoring system according to claim 1, is characterized in that, described current signal collector (14) is current transformer.
3. monitoring system according to claim 2, is characterized in that, described current transformer is also for being described ring main unit (10) power supply.
4. monitoring system according to claim 1, is characterized in that, also comprises: for showing the display device of described monitoring result.
5. monitoring system according to claim 4, is characterized in that, described display device is liquid crystal display.
6. monitoring system according to claim 1, is characterized in that, described information monitoring device (18) is also for generating alarm signal according to described monitoring result.
7. monitoring system according to claim 6, is characterized in that, also comprises: for carrying out the alarm device of alarm according to described alarm signal.
8. monitoring system according to claim 7, is characterized in that, described alarm signal is sound signal, and described alarm device is loudspeaker, for playing described sound signal; Or described alarm signal is light signal, described alarm device is light crossing-signal, for showing described light signal.
9. monitoring system according to claim 1, is characterized in that, also comprises: for sending the communication device of described monitoring result.
10. monitoring system according to claim 9, is characterized in that, also comprises: for receiving the host computer of the described monitoring result that described communication device sends.
11. monitoring systems according to claim 1, is characterized in that, also comprise: sulfur hexafluoride gas monitoring device, and described sulfur hexafluoride gas monitoring device is connected on described transmission cable (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909042.7U CN205103345U (en) | 2015-11-13 | 2015-11-13 | Monitoring system of looped netowrk cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909042.7U CN205103345U (en) | 2015-11-13 | 2015-11-13 | Monitoring system of looped netowrk cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205103345U true CN205103345U (en) | 2016-03-23 |
Family
ID=55519121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520909042.7U Active CN205103345U (en) | 2015-11-13 | 2015-11-13 | Monitoring system of looped netowrk cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205103345U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601457A (en) * | 2017-01-24 | 2017-04-26 | 北京合锐赛尔电力科技股份有限公司 | Current transformer with temperature measuring device |
| CN108085717A (en) * | 2016-11-23 | 2018-05-29 | 广西南宁凡成电子科技有限公司 | A kind of electrolytic aluminium factory overhead traveling crane networked system |
| CN112345881A (en) * | 2020-09-29 | 2021-02-09 | 贵州电网有限责任公司 | Ring network power supply cable fault positioning system and method based on cloud platform |
-
2015
- 2015-11-13 CN CN201520909042.7U patent/CN205103345U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085717A (en) * | 2016-11-23 | 2018-05-29 | 广西南宁凡成电子科技有限公司 | A kind of electrolytic aluminium factory overhead traveling crane networked system |
| CN108085717B (en) * | 2016-11-23 | 2024-04-19 | 广西南宁凡成电子科技有限公司 | Crown block networking system of electrolytic aluminum factory |
| CN106601457A (en) * | 2017-01-24 | 2017-04-26 | 北京合锐赛尔电力科技股份有限公司 | Current transformer with temperature measuring device |
| CN112345881A (en) * | 2020-09-29 | 2021-02-09 | 贵州电网有限责任公司 | Ring network power supply cable fault positioning system and method based on cloud platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108684010B (en) | Cable well running state online monitoring device and monitoring method based on Internet of things | |
| CN109324270A (en) | A kind of high-tension switch cabinet intelligent online monitoring system | |
| CN105548814B (en) | A kind of distribution line ground fault judgment method and system | |
| CN204854975U (en) | Cubical switchboard temperature on -line monitoring system | |
| CN102298107A (en) | Portable ultrasonic wave and cloud detection apparatus for partial discharge | |
| CN202583315U (en) | On-line monitoring system for transformer iron core grounding current | |
| CN102494787B (en) | Method and device for dynamically monitoring temperature of power cable connectors | |
| CN103321933A (en) | Fan state online monitoring system and method based on advanced reduced instruction-set computer machine (ARM) and ZigBee | |
| CN106603274B (en) | Power distribution network fault positioning method based on multidimensional communication data | |
| CN205103345U (en) | Monitoring system of looped netowrk cabinet | |
| CN105223463A (en) | The monitoring system of ring main unit and method | |
| CN104090252A (en) | Comprehensive detecting system and method for cable type fault indicator | |
| CN202614889U (en) | Cable safety monitoring device | |
| CN112381467A (en) | Artificial intelligence line loss analysis system based on big data of distribution station district total collection | |
| CN210327647U (en) | Intelligent Micro terminal of changing on spot | |
| CN202631679U (en) | Power tunnel online type high-voltage cable sheath circulating current fault waveform recording system | |
| CN205596111U (en) | Online identification system of platform district's circuit | |
| CN205091430U (en) | Transformer internal discharge failure diagnosis device | |
| CN104880222A (en) | 3G wireless communication-based secondary equipment state monitoring system | |
| CN111552213B (en) | Power communication equipment | |
| CN108917823A (en) | The on-line monitoring method and system of automatic setting switchgear monitoring parameters | |
| CN116317171B (en) | Electric quantity and non-electric quantity internet of things monitoring device | |
| CN202814597U (en) | High-voltage power transmission line temperature measuring system | |
| CN206470340U (en) | Power quality monitoring system | |
| CN203037764U (en) | Movable type lightning protection comprehensive detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |