CN112366824A - Remote control resetting device for relay protection inspection site - Google Patents
Remote control resetting device for relay protection inspection site Download PDFInfo
- Publication number
- CN112366824A CN112366824A CN202011271031.2A CN202011271031A CN112366824A CN 112366824 A CN112366824 A CN 112366824A CN 202011271031 A CN202011271031 A CN 202011271031A CN 112366824 A CN112366824 A CN 112366824A
- Authority
- CN
- China
- Prior art keywords
- reset
- push rod
- electric push
- control
- remote control
- 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
- 238000007689 inspection Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/005—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for remote controlled apparatus; for lines connecting such apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Relay Circuits (AREA)
Abstract
The invention relates to a remote control reset device for a relay protection inspection site, which comprises a reset driving mechanism and a control device, wherein the reset driving mechanism comprises a fixed seat for fixing the reset driving mechanism on a protection screen cabinet, an electric push rod for driving a reset button on the protection screen cabinet to reset and a telescopic connecting rod, wherein two ends of the telescopic connecting rod are respectively connected with the fixed seat and the electric push rod so as to adjust the distance between the fixed seat and the electric push rod and enable the electric push rod to be arranged on the reset button; the control device comprises a microcontroller, a wireless communication module and a power supply module, the microcontroller is electrically connected with the wireless communication module to receive a reset control command of the remote control terminal through the wireless communication module, the microcontroller is electrically connected with the control end of the electric push rod to control the push rod of the electric push rod to move up and down and drive the reset button to complete reset work, and the power supply module supplies power to the control device and an electric component on the reset driving mechanism. The device is favorable for reducing the labor intensity of workers and improving the working efficiency.
Description
Technical Field
The invention belongs to the field of relay protection of power systems, and particularly relates to a remote control reset device for a relay protection inspection site.
Background
With the development of social economy, the electricity consumption of China is increased year by year, so that the installed capacity of a power plant is continuously enlarged, the grid structure of an electric power system is enlarged, and the requirements on all-round functions of relay protection of the electric power system are higher and higher. When the relay protection is refused to operate or is operated by mistake, serious consequences such as expansion of accidents, damage to equipment, damage to power grid stability and the like are often caused, so that the relay protection quality control work needs to be done well.
With the development of the technology, the relay protection equipment is continuously updated, so that the difficulty of the routine maintenance work of the relay protection equipment is increased, and meanwhile, due to the increase of the load demand of a user, more and more transformer substations are put into operation for use, so that the workload of the routine maintenance work of the relay protection is increased.
In the protection test process, the protection action logic needs to be analyzed correctly besides the timeliness and the accuracy of information uploading. Because the on-site protection device is self-maintained in the fault state in the test process, a debugger needs to get up to reset the device after debugging a protection action logic. The whole protection debugging process is usually required to be repeated for dozens of times to hundreds of times, so that the fatigue degree of a debugger is increased, and the efficiency of protection debugging is reduced, therefore, a reset device capable of being used for a relay protection inspection site is urgently needed to be researched.
Disclosure of Invention
The invention aims to provide a remote control reset device for a relay protection inspection site, which is beneficial to reducing the labor intensity of workers and improving the working efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a remote control reset device for a relay protection inspection site comprises a reset driving mechanism and a control device, wherein the reset driving mechanism comprises a fixed seat for fixing the reset driving mechanism on a protection screen cabinet, an electric push rod for driving a reset button on the protection screen cabinet to reset and a telescopic connecting rod, wherein two ends of the telescopic connecting rod are respectively connected with the fixed seat and the electric push rod so as to adjust the distance between the fixed seat and the electric push rod and enable the electric push rod to be arranged on the reset button; the control device comprises a microcontroller, a wireless communication module and a power supply module, the microcontroller is electrically connected with the wireless communication module to receive a reset control command of the remote control terminal through the wireless communication module, the microcontroller is electrically connected with the control end of the electric push rod to control the push rod of the electric push rod to move up and down and drive the reset button to complete reset work, and the power supply module supplies power for electric components on the control device and the reset driving mechanism.
Furthermore, the fixed seat is rotatably connected with one end of the telescopic connecting rod to change the orientation of the telescopic connecting rod, the fixed seat is fixed at a proper position on the protection screen cabinet, the distance between the fixed seat and the electric push rod is adjusted through the telescopic connecting rod, and then the relative position of the electric push rod and the reset button is adjusted, so that the electric push rod is arranged on the reset button.
Furthermore, the fixing seat is made of a permanent magnet and is strongly adsorbed on a cabinet plate of the protection screen cabinet.
Furthermore, the telescopic connecting rod is an electric telescopic connecting rod, and the microcontroller is electrically connected with the control end of the electric telescopic connecting rod so as to control the telescopic work of the electric telescopic connecting rod.
Furthermore, a remote control terminal is also provided, and the remote control terminal wirelessly communicates with the wireless communication module of the control device to send a reset control command to control the action of the electric push rod.
Furthermore, the remote control terminal is a mobile phone terminal, the wireless communication module is a bluetooth module, and the mobile phone terminal is in bluetooth communication with the bluetooth module of the control device.
Furthermore, the control program of the microcontroller is internally provided with an action stroke adjusting function of the electric push rod, so that the reset distance of the electric push rod is set and adjusted through a remote control terminal.
Compared with the prior art, the invention has the following beneficial effects: the device realizes the equipment reset of the relay protection inspection site by using a remote control means, not only reduces the labor intensity of debugging personnel when debugging equipment, but also improves the working efficiency of protection debugging. The device is applicable in the protection screen cabinet of different structural style of transformer substation, and the mounted position is unrestricted, and the suitability is strong to do not have electrical connection with the operation equipment, use safe and reliable. Therefore, the invention has strong practicability and wide application prospect.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a protection screen cabinet in an embodiment of the present invention.
Fig. 3 is a schematic diagram of the field installation of the device in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1-3, the present invention provides a remote control reset device for a relay protection inspection site, which includes a reset driving mechanism and a control device 1, wherein the reset driving mechanism includes a fixing base 2 for fixing the reset driving mechanism on a protection screen cabinet 5, an electric push rod 3 for driving a reset button 6 on the protection screen cabinet 5 to reset, and a telescopic connecting rod 4, two ends of the telescopic connecting rod 4 are respectively connected with the fixing base 2 and the electric push rod 3 to adjust a distance between the fixing base and the electric push rod, so that the electric push rod is placed on the reset button. The control device 1 comprises a microcontroller, a wireless communication module and a power supply module, the microcontroller is electrically connected with the wireless communication module to receive a reset control command of the remote control terminal through the wireless communication module, the microcontroller is electrically connected with the control end of the electric push rod to control the push rod of the electric push rod to move up and down, the reset button is driven to complete reset work, and the power supply module supplies power for electric components on the control device and the reset driving mechanism. The control device 1 can be mounted on a telescopic connecting rod 4 or an electric push rod 3.
In this embodiment, the fixing base is rotatably connected with one end of the telescopic connecting rod to change the orientation of the telescopic connecting rod, the fixing base is fixed at a proper position on the protection screen cabinet, and the distance between the fixing base and the electric push rod is adjusted through the telescopic connecting rod, so that the relative position of the electric push rod and the reset button is adjusted, and the electric push rod is placed on the reset button.
In this embodiment, the fixing base is made by the permanent magnet to the powerful absorption is on the cabinet board of protection screen cabinet, and is fixed reliable, convenient dismantlement. The permanent magnet used is a flat cylindrical permanent magnet with a diameter of about 6cm, but is not limited to 6 cm. The telescopic link may optionally be made of a sufficiently rigid non-magnetic material. The electric push rod can adopt a progressive motor with a through screw rod, and can also adopt other mechanical structure designs to assist other motors. In this embodiment, the electric push rod adopts a 57BYGH series through screw rod stepping motor, and the length of the up-and-down protrusion of the push rod for pressing the reset button is 5cm, and the push rod can freely move up and down.
In other embodiments of the present invention, in order to further improve the automation degree of the device, the telescopic link may be an electric telescopic link, and the microcontroller is electrically connected to the control end of the electric telescopic link to control the telescopic operation thereof.
The remote control reset device is also provided with a remote control terminal, and the remote control terminal is in wireless communication with the wireless communication module of the control device to send a reset control command to control the action of the electric push rod. In this embodiment, the remote control terminal is a mobile phone terminal, the wireless communication module is a bluetooth module, and the mobile phone terminal performs bluetooth communication with the bluetooth module of the control device.
In order to meet the requirements of different protection device reset buttons on site, an action stroke adjusting function of the electric push rod is built in a control program of the microcontroller, so that the action stroke of the electric push rod at each time can be locked after the action stroke reaches a proper position by setting and adjusting the reset distance of the electric push rod in a mode of observing by human eyes or trying to reset.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (7)
1. A remote control reset device for a relay protection inspection site is characterized by comprising a reset driving mechanism and a control device, wherein the reset driving mechanism comprises a fixed seat for fixing the reset driving mechanism on a protection screen cabinet, an electric push rod for driving a reset button on the protection screen cabinet to reset and a telescopic connecting rod, and two ends of the telescopic connecting rod are respectively connected with the fixed seat and the electric push rod so as to adjust the distance between the fixed seat and the electric push rod and enable the electric push rod to be arranged on the reset button; the control device comprises a microcontroller, a wireless communication module and a power supply module, the microcontroller is electrically connected with the wireless communication module to receive a reset control command of the remote control terminal through the wireless communication module, the microcontroller is electrically connected with the control end of the electric push rod to control the push rod of the electric push rod to move up and down and drive the reset button to complete reset work, and the power supply module supplies power for electric components on the control device and the reset driving mechanism.
2. The remote control reset device for the relay protection inspection site as claimed in claim 1, wherein the fixing base is rotatably connected to one end of the telescopic link to change the orientation of the telescopic link, the fixing base is fixed at a suitable position on the protection screen cabinet, and the distance between the fixing base and the electric push rod is adjusted by the telescopic link, so as to adjust the relative position between the electric push rod and the reset button, so that the electric push rod is placed on the reset button.
3. The remote-control reset device for the relay protection inspection site as claimed in claim 2, wherein the fixing base is made of a permanent magnet and is strongly attached to a cabinet plate of the protection screen cabinet.
4. The remote control resetting device for the relay protection inspection site as claimed in claim 1, wherein the telescopic link is an electric telescopic link, and the microcontroller is electrically connected to a control end of the electric telescopic link to control the telescopic operation of the electric telescopic link.
5. The remote control resetting device for the relay protection inspection site as claimed in claim 1, wherein a remote control terminal is further provided, the remote control terminal wirelessly communicates with the wireless communication module of the control device to issue a resetting control command to control the operation of the electric push rod.
6. The remote control resetting device for the relay protection inspection site as claimed in claim 5, wherein the remote control terminal is a mobile phone terminal, the wireless communication module is a Bluetooth module, and the mobile phone terminal is in Bluetooth communication with the Bluetooth module of the control device.
7. The remote control resetting device for the relay protection inspection site as claimed in claim 1, wherein the microcontroller has a function of adjusting the stroke of the electric push rod built in its control program, so as to set and adjust the resetting distance of the electric push rod via the remote control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011271031.2A CN112366824A (en) | 2020-11-13 | 2020-11-13 | Remote control resetting device for relay protection inspection site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011271031.2A CN112366824A (en) | 2020-11-13 | 2020-11-13 | Remote control resetting device for relay protection inspection site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112366824A true CN112366824A (en) | 2021-02-12 |
Family
ID=74515545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011271031.2A Pending CN112366824A (en) | 2020-11-13 | 2020-11-13 | Remote control resetting device for relay protection inspection site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112366824A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1200273A (en) * | 1958-03-20 | 1959-12-21 | Merlin Gerin | Relays for remote reset control of protection relays |
| FR2738391A1 (en) * | 1995-09-06 | 1997-03-07 | Michel Bensadoun | Circuit breaker resetting device |
| CN207473820U (en) * | 2017-10-14 | 2018-06-08 | 广西电网有限责任公司桂林供电局 | A kind of wireless remote controller for relay protection involution |
| CN207572744U (en) * | 2017-11-10 | 2018-07-03 | 广东电网有限责任公司佛山供电局 | A kind of remote-control apparatus of magnetic adsorption type high-voltage ring network switch cabinet |
| CN110880431A (en) * | 2018-09-06 | 2020-03-13 | 嘉灵科技有限公司 | Remotely operated ground fault circuit interrupter |
-
2020
- 2020-11-13 CN CN202011271031.2A patent/CN112366824A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1200273A (en) * | 1958-03-20 | 1959-12-21 | Merlin Gerin | Relays for remote reset control of protection relays |
| FR2738391A1 (en) * | 1995-09-06 | 1997-03-07 | Michel Bensadoun | Circuit breaker resetting device |
| CN207473820U (en) * | 2017-10-14 | 2018-06-08 | 广西电网有限责任公司桂林供电局 | A kind of wireless remote controller for relay protection involution |
| CN207572744U (en) * | 2017-11-10 | 2018-07-03 | 广东电网有限责任公司佛山供电局 | A kind of remote-control apparatus of magnetic adsorption type high-voltage ring network switch cabinet |
| CN110880431A (en) * | 2018-09-06 | 2020-03-13 | 嘉灵科技有限公司 | Remotely operated ground fault circuit interrupter |
Non-Patent Citations (1)
| Title |
|---|
| 魏嘉隆 等: "《220kV、110kV、10kV断路器快速分闸机械手的研制》", 《机电信息》, pages 32 - 33 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204442215U (en) | A kind of control cubicle of remote controlled switched reluctance motor | |
| CN112366824A (en) | Remote control resetting device for relay protection inspection site | |
| CN202276196U (en) | Intelligent monitoring terminal device of intelligent switchhouse | |
| CN201937200U (en) | Diversified high-voltage fully-automatic removing-type handcart | |
| CN201408933Y (en) | Portable insulation electricity-inspection operating device | |
| CN204290493U (en) | A kind of power distribution automation detection and control terminal with bluetooth maintenance function | |
| CN104316114A (en) | Intensive type touch screen intelligent power meter | |
| CN213423338U (en) | Contactless line parameter measurement system | |
| CN204631590U (en) | A kind of machine room power failure Intelligent short message alarm system | |
| CN109656153A (en) | A kind of cement shaft tower electrical verification and ground line robot control system | |
| CN203871207U (en) | Electric power circuit break pressure plate | |
| CN203368139U (en) | Novel passive protection device for ring main unit | |
| CN102608458A (en) | Intelligent monitoring system for alternating-current distribution lightning protection box for communication base stations | |
| CN203072269U (en) | Electric appliance control cabinet with monitor camera | |
| CN201540590U (en) | B/S framework networking electronic analog chart board system | |
| CN208656717U (en) | A kind of photovoltaic plant cleaning monitoring system | |
| CN203191086U (en) | Wireless temperature measurement concentration display apparatus | |
| CN201893611U (en) | Direct current power control module | |
| CN202798156U (en) | Data acquisition control system with novel alternating current contactor | |
| CN206363524U (en) | One kind can communication type intelligent breaker | |
| CN218673699U (en) | Testing device capable of being built quickly | |
| CN219977787U (en) | Subway train switch door stability testing arrangement | |
| CN202395527U (en) | Intelligent ring main unit control device | |
| CN204425842U (en) | A kind of industrial frequency control cabinet | |
| CN204515086U (en) | The auto-action proving installation of automatic change over |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210212 |