CN202838002U - Power cable tunnel centralized control system - Google Patents
Power cable tunnel centralized control system Download PDFInfo
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- CN202838002U CN202838002U CN 201220494133 CN201220494133U CN202838002U CN 202838002 U CN202838002 U CN 202838002U CN 201220494133 CN201220494133 CN 201220494133 CN 201220494133 U CN201220494133 U CN 201220494133U CN 202838002 U CN202838002 U CN 202838002U
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Abstract
The utility model discloses a power cable tunnel centralized control system, which comprises a monitoring center. The monitoring center is connected with a well cover monitoring subsystem, an electronic code well cover lock subsystem, a video monitoring subsystem, an optical fiber multi-gas detection subsystem, a water-collecting well water level detection subsystem, and a plurality of fireproof door detection subsystems, wherein the well cover monitoring subsystem and the electronic code well cover lock subsystem are installed on a well cover; and the video monitoring subsystem, the optical fiber multi-gas detection subsystem, the water-collecting well water level detection subsystem and the plurality of the fireproof door detection subsystems are installed in a tunnel. The power cable tunnel centralized control system ensures the safety of city power supply, promotes intelligent city cable network management, carries out condition based maintenance on power transmission cables, strengthens operating maintenance management of high-voltage cables, refines defect management on aspects of the high-voltage cables and ancillary facilities, perfects centralized monitoring management of the high-voltage cables, realizes automatic and intelligent management of power cable network gradually, and builds a unified and perfect remote monitoring management center for the power cable network.
Description
Technical field
The utility model relates to a kind of tunnel centralized control system, relates in particular to a kind of power cable tunnel centralized control system.
Background technology
The at present management of state's inner cable specialty also is in the scheduled overhaul stage, and general employing is regularly carried out the preventive trial of major insulation and cross interconnected system and method that thermometric is surveyed load the operation conditions of cable is checked.By the standard value in above-mentioned check result and the rules is compared, then arrange maintenance schedule that equipment is carried out interruption maintenance if exceed standard.But from economic angle and technical standpoint, scheduled overhaul has significant limitation.For example routine test and maintenance caused very large directly and indirect economy waste, according to statistics in making regular check on and keeping in repair, it is this flower that 60% cost is only arranged.In addition, check under the low pressure that is different from the equipment service condition, many insulation defects and potential fault can't in time be found.For cable is carried out preventive trial, also to regularly arrange to move cable and have a power failure, increased the power off time of cable machinery, with social development to the electrical network high reliability, the requirement of low outage rate is more and more incompatible.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, and a kind of power cable tunnel centralized control system is provided, and it has the power cable of assurance system normally moves, and guarantees urban electricity supply safety, promotes the advantage of intelligent city cable system management.
To achieve these goals, the utility model adopts following technical scheme:
A kind of power cable tunnel centralized control system, it comprises Surveillance center, and Surveillance center is connected with well lid Monitor And Control Subsystem, electronic cipher pattern manhole cover lock subsystem, video monitoring subsystem, many gas of optical fiber detection subsystem, sump water level detecting subsystem, fire-proof door detection subsystem, tunnel multimode detection case respectively; Described well lid Monitor And Control Subsystem, electronic cipher pattern manhole cover lock subsystem are installed on the well lid, described video monitoring subsystem, and many gas of optical fiber detection subsystem, sump water level detecting subsystem and some fire-proof door detection subsystem are installed in the tunnel.
Described well lid Monitor And Control Subsystem comprises at least one well lid control terminal, the well lid control terminal is uploaded to corresponding minute station host with well lid control terminal duty, minute station host is uploaded to total station host with well lid control terminal duty, alarm condition and management information, total station host is uploaded to administration and supervision authorities with information again, administration and supervision authorities comprise monitoring station, and monitoring station is connected cable to be connected with central management station with the alarm center; Be connected with the alarm center, realize illegal 110 interlink warnings of opening of well lid.
Described master station Host Administration divides station host greater than 50; Multiple communication modes is provided, serial ports, Ethernet, described minute station host provides 4,8,16 tunnel controls, and every road is 32 well lid control terminals of monitoring at most, reach 10KM with the communication distance of well lid control terminal, provide the multiple communication mode: serial ports, Ethernet;
Described well lid control terminal comprises the well lid controller, and the well lid controller is provided with lock body.The well lid control terminal is located in the control terminal box, and described control terminal box has waterproof, protection against the tide, dustproof, against shock function;
Described well lid control terminal and substation main-machine communication are accepted auto-unlocking, locking order that minute station host assigns, adopt the remote power feeding mode, adopt the RS485 interface communication, and speed adopts 600BPS or 1200BPS, and communication distance reaches 10KM.
Described electronic cipher pattern manhole cover lock subsystem comprises electronic lock, electron key and password burning part; Described electronic lock and electron key have numerical ciphers;
Described electron key comprises opening handle and electronic key box, and opening handle is used for connecting electronic key case open manhole cover electronic lock; Described opening handle head has copper contact, is used for carrying out communication with the well lid electronic lock;
Described electronic key box comprises cipher authentication circuit and accumulator, and wherein, electronic key box sends cipher authentication information and power supply by opening handle to well lid internal electron lock;
Described password cd-rom recorder is connected with electronic key box after the well lid electronic lock connects by special-purpose burning line, the password of electronic key box and well lid electronic lock is read to write at any time.
Described video monitoring subsystem structure figure comprises at least one high-speed ball camera that is installed in the cable tunnel, then high-speed ball camera is connected to photoelectric commutator in the transformer station through photoelectric commutator by telecommunication optical fiber through video server, photoelectric commutator is connected with the network switch in the transformer station, the network switch in the transformer station respectively with transformer station in disk array, the Streaming Media storage server, management server is communicated by letter with the network switch of cable Surveillance center, the network switch of cable Surveillance center is communicated by letter with digital video matrix, digital video matrix is connected with large-screen tv wall, and the central point that is connected with large-screen tv wall at digital video matrix connects monitor terminal.
Described many gas of optical fiber detection subsystem, it comprises at least one many gas detecting instrument, many gas detecting instruments are connected fiber-optic fiber gas monitoring (FBG) demodulator and supervisory system main-machine communication through the mine anti-explosion optical cable with fiber-optic fiber gas monitoring (FBG) demodulator by GPZ;
Described Optical Fiber Transmission optical cable two ends welding APC joint uses the APC joint that the many gas detecting instruments of optical fiber are linked to each other with the optical cable of laying;
Described fiber-optic fiber gas monitoring (FBG) demodulator adopts the RS232 interface line of standard to be connected with the supervisory system main frame.
Described sump water level detecting subsystem comprises at least one water level detection gauge, water level detection gauge is connected with the supervisory system main frame by 485 buses, described water-level instrumentation is placed directly in the well in tunnel, in case well is filled with water, water-level instrumentation just can float, and water-level instrumentation is uploaded to the supervisory system main frame with the waterlevel data that gathers through 485 buses.
Described fire-proof door detection subsystem is KHSJ-11 cable duct fire-proof door automatic closing system.
Described well lid plugging structure is installed lattice door in the well head porch, pin with lock at ordinary times, can only open door by cable tunnel one side when the personnel of needing repairing enter, and die punching interts mutually, is fixedly connected into integral body with card key, and vertical tube spacing 100mm can't bore more; Described lattice door adopts stainless steel, and thickness is not less than 1.5mm.
The power cable tunnel centralized control system is through the detection of pick-up unit in each system to electric power tunnel, each pick-up unit is uploaded to the outstation main frame with the situation in the electric power tunnel that detects through optical cable, there is again the outstation main frame to be uploaded to Surveillance center, by Surveillance center according to these information, make electric power tunnel be in real time in the monitoring, promote the management of intelligent city cable system, better carry out the repair based on condition of component of feeder cable, reinforced high pressure cable operation maintenance management, the defect management of refinement high-tension cable and affiliated facility aspect, improve the management of high-tension cable Centralized Monitoring, set up the remote monitoring and administration center of the perfect power cable net of unification.
The beneficial effects of the utility model: the utility model is guaranteed urban electricity supply safety, promote the management of intelligent city cable system, better carry out repair based on condition of component, reinforced high pressure cable operation maintenance management, refinement high-tension cable and the affiliated facility aspect of feeder cable defect management, improve high-tension cable Centralized Monitoring management, progressively realize robotization, the intelligent management of power cable net, set up the remote monitoring and administration center of the perfect power cable net of unification.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the well lid Monitor And Control Subsystem;
Fig. 3 is the video monitoring subsystem;
Fig. 4 is many gas of optical fiber detection subsystem,
Fig. 5 is sump water level detecting subsystem diagram.
Wherein, 1. administration and supervision authorities, 2. total station host, 3. divide station host, 4. well lid control terminal, 5. cable tunnel, 51. high-speed ball camera, 52. four road video servers, 53. single channel video servers, 6. transformer station, 61. disk arrays, 62. Streaming Media storage servers, 63. management server, 7. cable Surveillance center, 71. digital video matrixes, 72. monitor terminal, 73. large-screen tv walls, 8. internal network, 9. telecommunication optical fiber, 10. photoelectric commutator, 11. network switchs, 12. measuring points, 13. junction box, 14. the mine anti-explosion optical cable, 15. fiber-optic fiber gas monitoring (FBG) demodulator, 16. supervisory system main frames, 17. well lid Monitor And Control Subsystem, 18. electronic cipher pattern manhole cover lock subsystem, 19. video monitoring subsystems, 20. many gas of optical fiber detection subsystem, 21. sump water level detecting subsystem, 22. the fire-proof door detection subsystem, 23. Surveillance center, 24. water level detection gauge.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, a kind of power cable tunnel centralized control system, it comprises Surveillance center 23, and Surveillance center 23 is connected with well lid Monitor And Control Subsystem 17, electronic cipher pattern manhole cover lock subsystem 18, video monitoring subsystem 19, many gas of optical fiber detection subsystem 20, sump water level detecting subsystem 21, fire-proof door detection subsystem 22 respectively; Described well lid Monitor And Control Subsystem, electronic cipher pattern manhole cover lock subsystem are installed on the well lid, described video monitoring subsystem, and many gas of optical fiber detection subsystem, sump water level detecting subsystem and some fire-proof door detection subsystem are installed in the tunnel.
As shown in Figure 2, described well lid Monitor And Control Subsystem 17 comprises at least one well lid control terminal 4, well lid control terminal 4 is uploaded to corresponding minute station host 3 with well lid control terminal 4 duties, minute station host 3 is uploaded to total station host 2 with well lid control terminal 4 duties, alarm condition and management information, total station host 2 is uploaded to information administration and supervision authorities 1 again, administration and supervision authorities 1 comprise monitoring station, and monitoring station is connected cable to be connected with central management station with the alarm center; Monitoring station is connected with the alarm center, realizes illegal 110 interlink warnings of opening of well lid.
Described administration and supervision authorities 1 usefulness TCP/IP Ethernet networking mode.
Described total station host 2 with the form of graphical interfaces provide cable shaft state, Real Time Monitoring, spread for 3 times to minute station host and to close the control command of pattern manhole cover lock, various faults alarm form, sound, figure, voice, note etc. are provided; The file administration of maintainer and well lid control terminal 4; The staff logs in management; The historical record inquiry, text printing; Communicate by letter with other branch office's central management stations, monitoring station in the administration and supervision authorities 1.
2 management minute station hosts 3 of described total station host are greater than 50; Provide multiple communication modes, serial ports, Ethernet.
Described minute station host's 3 real time monitoring well lid control terminals, 4 duties; Send remote switch pattern manhole cover lock control command; Give the well lid control terminal 4 power supplies.
Described minute station host 3 provides 4,8,16 tunnel controls, and every road is 32 well lid control terminals 4 of monitoring at most, reaches 10KM with the communication distance of well lid control terminal 4, provides the multiple communication mode: serial ports, Ethernet.
Described well lid control terminal 4 comprises the well lid controller, and the well lid controller is provided with lock body.Well lid control terminal 4 is located in the control terminal box, and described control terminal box has waterproof, protection against the tide, dustproof, against shock function.
Described well lid control terminal 4 has electric control lock control function, communicates by letter with minute station host 3, accepts auto-unlocking, locking order that minute station host 3 assigns, adopt the remote power feeding mode, adopt the RS485 interface communication, speed adopts 600BPS or 1200BPS, and communication distance reaches 10KM.
Described electronic cipher pattern manhole cover lock subsystem 18 comprises electronic lock, electron key and password cd-rom recorder part; Described electronic lock and electron key have numerical ciphers, in correspondence with each other; Adopt cryptographic algorithm during password transmission.
Described electron key comprises opening handle and electronic key box, and opening handle is used for connecting electronic key case open manhole cover electronic lock; Described opening handle head has copper contact, is used for carrying out communication with the well lid electronic lock.
Described electronic key box comprises cipher authentication circuit and accumulator, and wherein, electronic key box sends cipher authentication information and power supply by opening handle to well lid internal electron lock.
Described password cd-rom recorder is connected with electronic key box after the well lid electronic lock connects by special-purpose burning line, the password of electronic key box and well lid electronic lock is read to write at any time.
The unlatching of described all electronic lock all needs to examine verification process through a password, and process is as follows:
Behind the key sleeve that the electron key intervening well covers after entering duty, the battery in the electron key is powered to electronic lock by key, simultaneously self-contained identification cipher is sent to electronic lock, and request is opened;
Electronic lock get electric after, receive the encrypted message that electron key is sent, check with the password that self stores, if cryptographic core is to correctly, then carry out release and return one to electron key and check successful information, the receiving of electron key check after the successful information status indicator lamp can prompting operation person's cryptographic core to passing through.At this moment the operator can rotate the handle unlatching lock bolt of electron key, finishes the anti-lock bolt open function of invading.
As shown in Figure 3, described video monitoring subsystem 19 comprises the front monitoring front-end subsystem, and the front monitoring front-end subsystem is connected with transmission platform, management control system and back-stage management subsystem.
Described front monitoring front-end subsystem comprises at least one infrared high-speed ball video camera 51 and supporting camera lens, protective cover, decoding driver, alarm, front end Based Intelligent Control server with it.
Described transmission platform comprises cable and optical cable.
Described management control system comprises video switcher, controller, operation keyboard, all kinds of control communication interface, power supply and with it supporting control desk, monitor cabinet, monitor, display, large-size screen monitors, built-in hard disk video tape recorder, Streaming Media memory device and disk array.
Described video monitoring system structural drawing comprises at least one high-speed ball camera 51 that is installed in the cable tunnel, high-speed ball camera 51 is being connected to photoelectric commutator 10 in transformer station 6 through photoelectric commutator 10 by telecommunication optical fiber 9 through four road video servers 52 and single channel video server 53, photoelectric commutator 10 is connected with the network switch 11 in the transformer station 6, the network switch 11 in the transformer station 6 respectively with transformer station 6 in disk array 61, Streaming Media storage server 62, the network switch 11 of management server 63 and cable Surveillance center 7 is communicated by letter, the network switch 11 of cable Surveillance center 7 is communicated by letter with digital video matrix 71, digital video matrix 71 is connected with large-screen tv wall 73, and the central point that is connected with large-screen tv wall 73 at digital video matrix 71 connects monitor terminal 72.
Described video monitoring subsystem 19 adopts advanced dynamic inter-frequency networking technology, intelligent power control technology, senior dynamic routing adjustment technology, seamless soft hand-off and video optimized technology, guarantees that video image is level and smooth in transmission course, clear, smooth.
As shown in Figure 4, described many gas of optical fiber detection subsystem 20, it comprises at least one many gas detecting instrument, and many gas detecting instruments are connected with fiber-optic fiber gas monitoring (FBG) demodulator 15 through mine anti-explosion optical cable 14 by GPZ, and fiber-optic fiber gas monitoring (FBG) demodulator 15 is communicated by letter with supervisory system main frame 16.
The many gas detecting instruments of described optical fiber, Real-Time Monitoring gas leakage concentration and scene temperature; Described mine anti-explosion optical cable 14 passes to supervisory system main frame 16 in the pulpit with sensor signal.16 pairs of transducing signals of supervisory system main frame carry out demodulation, and the real-time information of site environment state is provided.
Described mine anti-explosion optical cable 14 optical cable in process of deployment must not have the situation of obvious Zhe ﹑ Niu ﹑ pressure and rigid damage, lay complete rear at the two ends of mine anti-explosion optical cable 14 welding APC joint, use the APC joint that sensing device is linked to each other with the optical cable of laying, note using alcohol to keep the cleaning of connector.
Described fiber-optic fiber gas monitoring (FBG) demodulator 15 adopts the RS232 interface line of standard to be connected with supervisory system main frame 16, and fiber-optic fiber gas monitoring (FBG) demodulator 15 also is connected with many gas of optical fiber instrument.
As shown in Figure 5, described sump water level detecting subsystem 21 comprises at least one water level detection gauge 24, water level detection gauge 24 is connected with supervisory system main frame 16 by 485 buses, described water-level instrumentation 24 is placed directly in the well in tunnel, in case well is filled with water, water-level instrumentation 24 just can float, and water-level instrumentation 24 is uploaded to supervisory system main frame 16 with the waterlevel data that gathers through 485 buses.
Described fire-proof door detection subsystem 22 is KHSJ-11 cable duct fire-proof door automatic closing system.
Described fire-proof door adopts import steel first class vent, fills 1200 ℃ of heatproofs in the door leaf with on the s, and fire endurance is not less than 1 hour high-quality applied fireproofing, and supporting stainless steel Hardware fitting, guarantees that the switch of fire-proof door is flexible, not bite.
Described fire resisting wall adopts the materials such as mining mineral wool block and back-fire relief bag to build system, thickness is not less than 240mm, the fire resisting wall both sides are not less than 1.5 meters cable brushing frie retardant coating, before the frie retardant coating brush cable surface is cleared up, when building fire wall by laying bricks or stones, also can take into account draining and the plague of rats of cable duct, guarantee the steadiness of fire wall.The shutoff cable cavern uses fire barrier, accomplishes that should there be the overlap joint about 50mm at the dividing plate place, uses the bolt fixation, adopts special washer.Be installed in technical gaps and slit stifled tight with organic fire prevention calking than large part.
The power pack of described above-mentioned supervisory system mainly adopts main control equipment power supply and remote equipment power supply.The main control equipment in the supervisory system wherein; be deployed in nearby the transformer station such as the comprehensively monitoring main frame; the screen position that takies in the transformer station is the main control equipment power supply; the DC36V power supply that provides for main control equipment in the transformer station has perfect back-up protection; the reliability of whole system is very high, and power supply is without technical difficulty.
Described well lid plugging structure is installed lattice door in the well head porch, pin with lock at ordinary times, can only open door by cable tunnel one side when the personnel of needing repairing enter, and die punching interts mutually, is fixedly connected into integral body with card key, and vertical tube spacing 100mm can't bore more; Described lattice door adopts stainless steel, and thickness is not less than 1.5mm.
Although above-mentionedly by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (9)
1. power cable tunnel centralized control system, it is characterized in that, it comprises Surveillance center, and Surveillance center is connected with well lid Monitor And Control Subsystem, electronic cipher pattern manhole cover lock subsystem, video monitoring subsystem, many gas of optical fiber detection subsystem, sump water level detecting subsystem, some fire-proof door detection subsystem respectively; Described well lid Monitor And Control Subsystem and electronic cipher pattern manhole cover lock subsystem are installed on the well lid, described video monitoring subsystem, and many gas of optical fiber detection subsystem, sump water level detecting subsystem and some fire-proof door detection subsystem are installed in the tunnel.
2. power cable tunnel centralized control system as claimed in claim 1, it is characterized in that, described well lid Monitor And Control Subsystem comprises at least one well lid control terminal, the well lid control terminal is uploaded to corresponding minute station host with well lid control terminal duty, minute station host is uploaded to total station host with well lid control terminal duty, alarm condition and management information, total station host is uploaded to administration and supervision authorities with information again, administration and supervision authorities comprise monitoring station, and monitoring station is connected cable to be connected with central management station with the alarm center; Be connected with the alarm center, realize illegal 110 interlink warnings of opening of well lid.
3. power cable tunnel centralized control system as claimed in claim 2, it is characterized in that, described well lid control terminal comprises the well lid controller, and the well lid controller is provided with lock body, and the well lid control terminal is located in the control terminal box, described well lid control terminal and substation main-machine communication, accept auto-unlocking, locking order that minute station host assigns, adopt the remote power feeding mode, adopt the RS485 interface communication, speed adopts 600BPS or 1200BPS, and communication distance reaches 10KM.
4. power cable tunnel centralized control system as claimed in claim 1 is characterized in that, described electronic cipher pattern manhole cover lock subsystem comprises electronic lock, electron key and password cd-rom recorder part; Described electronic lock and electron key have numerical ciphers;
Described electron key comprises opening handle and electronic key box, and opening handle is used for connecting electronic key case open manhole cover electronic lock; Described opening handle head has copper contact;
Described electronic key box comprises cipher authentication circuit and accumulator, and wherein, electronic key box sends cipher authentication information and power supply by opening handle to well lid internal electron lock;
Described password cd-rom recorder is connected with electronic key box after the well lid electronic lock connects by special-purpose burning line, the password of electronic key box and well lid electronic lock is read to write at any time.
5. power cable tunnel centralized control system as claimed in claim 1, it is characterized in that, described video monitoring subsystem comprises at least one high-speed ball camera that is installed in the cable tunnel, then high-speed ball camera is connected to photoelectric commutator in the transformer station through photoelectric commutator by telecommunication optical fiber through video server, photoelectric commutator is connected with the network switch in the transformer station, the network switch in the transformer station respectively with transformer station in disk array, the Streaming Media storage server, management server is communicated by letter with the network switch of cable Surveillance center, the network switch of cable Surveillance center is communicated by letter with digital video matrix, digital video matrix is connected with large-screen tv wall, and the central point that is connected with large-screen tv wall at digital video matrix connects monitor terminal.
6. power cable tunnel centralized control system as claimed in claim 1, it is characterized in that, described many gas of optical fiber detection subsystem, it comprises at least one multiple gas detection sensor, multiple gas detection sensor is connected fiber-optic fiber gas monitoring (FBG) demodulator and supervisory system main-machine communication through the mine anti-explosion optical cable with fiber-optic fiber gas monitoring (FBG) demodulator by GPZ;
Described mine anti-explosion optical cable two ends welding APC joint;
Described GPZ uses the APC joint that the optical fiber multi-gas sensor is linked to each other with the optical cable of laying;
Described fiber-optic fiber gas monitoring (FBG) demodulator adopts the RS232 interface line of standard to be connected with the supervisory system main frame.
7. power cable tunnel centralized control system as claimed in claim 1, it is characterized in that, described sump water level detecting subsystem comprises at least one water level detection gauge, and water level detection gauge is connected with the supervisory system main frame by 485 buses, and described water-level instrumentation is placed directly in the well in tunnel.
8. power cable tunnel centralized control system as claimed in claim 1 is characterized in that, described fire-proof door detection subsystem is KHSJ-11 cable duct fire-proof door automatic closing system.
9. power cable tunnel centralized control system as claimed in claim 1, it is characterized in that, describedly be provided with well lid plugging structure design at well lid, described well lid plugging structure is installed lattice door in the well head porch, pin with lock at ordinary times, can only open door by cable tunnel one side when the personnel of needing repairing enter, die punching interts mutually, be fixedly connected into integral body with card key, described lattice door adopts stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494133 CN202838002U (en) | 2012-09-26 | 2012-09-26 | Power cable tunnel centralized control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494133 CN202838002U (en) | 2012-09-26 | 2012-09-26 | Power cable tunnel centralized control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202838002U true CN202838002U (en) | 2013-03-27 |
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ID=47949666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220494133 Expired - Lifetime CN202838002U (en) | 2012-09-26 | 2012-09-26 | Power cable tunnel centralized control system |
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| Country | Link |
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| CN (1) | CN202838002U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393099A (en) * | 2017-08-24 | 2017-11-24 | 深圳供电局有限公司 | Digital lock |
| CN113778030A (en) * | 2021-08-19 | 2021-12-10 | 国网山东省电力公司金乡县供电公司 | Remote control system for low-voltage equipment of cable tunnel |
-
2012
- 2012-09-26 CN CN 201220494133 patent/CN202838002U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393099A (en) * | 2017-08-24 | 2017-11-24 | 深圳供电局有限公司 | Digital lock |
| CN113778030A (en) * | 2021-08-19 | 2021-12-10 | 国网山东省电力公司金乡县供电公司 | Remote control system for low-voltage equipment of cable tunnel |
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