CN107465261A - A kind of transformer station's anti-misoperation locking device based on Quick Response Code identification - Google Patents
A kind of transformer station's anti-misoperation locking device based on Quick Response Code identification Download PDFInfo
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- CN107465261A CN107465261A CN201610385590.3A CN201610385590A CN107465261A CN 107465261 A CN107465261 A CN 107465261A CN 201610385590 A CN201610385590 A CN 201610385590A CN 107465261 A CN107465261 A CN 107465261A
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- Prior art keywords
- quick response
- response code
- transformer station
- type switch
- device based
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- 238000004891 communication Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 101150053844 APP1 gene Proteins 0.000 description 2
- 101100189105 Homo sapiens PABPC4 gene Proteins 0.000 description 2
- 102100039424 Polyadenylate-binding protein 4 Human genes 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003278 mimic effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Classifications
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- H02J13/0075—
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to a kind of transformer station's anti-misoperation locking device based on Quick Response Code, it is characterised in that the anti-misoperation locking of transformer station is realized by identification of the smart mobile phone to device numbering Quick Response Code.The storage of large number quipments numbering and the operating process of high complexity are realized using the anti-APP softwares of smart mobile phone five, the requirement of transformer station one man operation can be met；The device structures such as used bluetooth plug-type switch, five preventing key sockets are simple, size is small, simple to install and are common to various equipment, are not easy high by operation maintenance personnel short circuit, anti-error reliability；Using device numbering Quick Response Code come unique mark equipment, construction is simple is easy to maintenance, reliable operation.
Description
Technical field
The present invention relates to a kind of electrical equipment anti-incorrect manipulation deadlock method, particularly a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification.
Background technology
In substation operation mode switches operation or upkeep operation, generally require to operate continuously the primary equipments such as more switches and disconnecting link.In order to ensure the correctness of operation, transformer station is designed with five-preventing system, operation maintenance personnel first carries out simulated operation according to operation order on mimic panel or five protection computers, mimic panel or five anti-machines number primary equipment descends into five preventing keys by operation order, five preventing keys are inserted on the Multiple-protection socket in primary equipment operator control panel by operation maintenance personnel, and a pair of normally opened contacts in five preventing keys are concatenated into primary equipment operating handle control loop by the binding post on Multiple-protection socket both sides.When the device numbering of current operation item in five preventing keys and the consistent numbering of Multiple-protection socket, normally opened contact closure, control loop turns on, and operation maintenance personnel can divides the/live primary equipment of conjunction by operating handle.
Subject matter existing for existing five-preventing system is：1st, Multiple-protection socket is complicated, size is big（30x60mm）Each Multiple-protection socket needs unique numbering in station, it expresses different numberings using the different arrangements of multiple pins in socket, typically 2 rows, 4 pins are often arranged, different numberings are expressed by cutting several pins, the limited amount of numbering, and it can only be corresponding with the equipment of particular number, if corresponding during installation malfunction, operation maintenance personnel maloperation interval can be caused.2nd, Multiple-protection socket is easy to be bypassed with the binding post on wire short circuit both sides by people, and so as to lose anti-error effect, reliability is low.3rd, when device numbering changes, Multiple-protection socket also must be changed synchronously, and maintenance workload is big.4th, the operation order of papery can only be taken to be operated to scene using existing five-preventing system, operation maintenance personnel, delineates carry out action-item confirmation by hand, it is also necessary to there is supervisor to be examined, operating efficiency is low.5th, the action-item limited amount that existing five-preventing system is supported, a few devices such as switch, disconnecting link can only be directed to and implement anti mis-closedown function.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification.
The object of the present invention is achieved like this：A kind of transformer station's anti-misoperation locking device based on Quick Response Code identification, including five anti-machines, supervisory control of substation machine and five preventing key sockets, it is characterised in that also include by smart mobile phone, bluetooth plug-type switch, device numbering Quick Response Code, operation indicating lamp, wherein：Five preventing key sockets have two pins, five anti-machines of the control loop for accessing equipment to be operated in a series arrangement or the five anti-interrupting input terminals for accessing smart electronicses control box or access, the jaw of bluetooth plug-type switch is engaged with five preventing key socket apertures, in bluetooth plug-type switch in control loop of a pair of the passive normally opened contacts of relay by five preventing key jack bases series connection access device；Smart mobile phone is connected by Bluetooth communication with bluetooth plug-type switch and controls the folding of bluetooth plug-type switch.
Described operation indicating lamp is attempted by between outlet and the ground of five preventing key sockets, is lighted when positive electricity reaches.
Described device numbering Quick Response Code is arranged on beside five preventing key sockets or/and is arranged on the display screen of smart electronicses control box or/and is arranged on the display screen of supervisory control of substation machine.
Described device numbering Quick Response Code is Chinese letter co or QR codes or PDF417 codes.
Five described preventing key sockets are arranged on five anti-machines or/and on supervisory control of substation machine.
The five anti-APP softwares that Quick Response Code can be scanned and control bluetooth plug-type switch are installed on described smart mobile phone.
The present invention realizes the storage of large number quipments numbering and the operation of high complexity using the anti-APP softwares of smart mobile phone five, can meet the requirement of transformer station one man operation；Used bluetooth plug-type switch build is compact, it is in light weight, be easy to carry；Used five preventing keys socket structure is simple, size is small, simple to install and is common to various equipment, is not easy high by operation maintenance personnel short circuit, anti-error reliability；Using device numbering Quick Response Code come unique mark equipment, construction is simple is easy to maintenance, reliable operation.
Brief description of the drawings
Fig. 1 is the schematic diagram that the method for the present invention is applied in traditional cable control loop；
Fig. 2 is the schematic diagram that the method for the present invention is applied in smart electronicses control box；
Fig. 3 is the circuit structure diagram of five preventing key sockets of the invention and bluetooth plug-type switch；
Fig. 4 is the service routine flow chart that the anti-request of smart electronicses control box five is interrupted；
Fig. 5 is the subroutine flow chart that smart electronicses control box waits five anti-request involutions.
Embodiment
1 the invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1：Operation power positive pole（+KM）Connect the handle of a distant place/on the spot（QK1）Common port, the handle of a distant place/on the spot（QK1）" on the spot " pin connect five preventing key sockets（K1）Wire inlet pin, five preventing key sockets（K1）Go out wire pin attended operation handle（QK2）Common port, while five preventing key sockets（K1）Go out wire pin attended operation warning light（LED1）Positive pole, the negative pole of operation indicating lamp passes through current-limiting resistance（R1）Ground connection, " dividing ", " conjunction " pin access controlled device executing agency of operating handle, controlled device executing agency attended operation power cathode（-KM）, so as to form five-defence block control loop.
Device numbering Quick Response Code（QR1）Icon be attached to five preventing key jack bases（K1）Near and be easy to scanning position on, the present embodiment device numbering Quick Response Code uses Chinese letter co.
As shown in figure 3, bluetooth plug-type switchs（S1）Plug and five preventing key sockets（K1）It is supporting, bluetooth plug-type switch（S1）In control loop of a pair of the passive normally opened contacts of interior relay by five preventing key jack bases series connection access device, bluetooth plug-type switch（S1）Closure by the smart mobile phone with its Bluetooth pairing（APP1）Upper five anti-APP softwares control.
Five anti-machines（PC1）From supervisory control of substation machine（PC2）Receive the actual position information of the switching values such as switch, disconnecting link, pressing plate, the contraposition of picture pel division state on five anti-machines, operation maintenance personnel is needed in equipment such as supervisory control of substation hands- operation switch, disconnecting link, pressing plates to five anti-machine request grant commands, when the numbering of equipment to be operated is identical with numbering in grant commands on supervisory control of substation machine, the operation side on supervisory control of substation machine is allowed to.Five anti-machines only have simulated operation function, without the direct control function of substation equipment.
A five preventing key sockets are also equipped with five anti-machines（K2）, five anti-machine collection five preventing key sockets of access（K2）Bluetooth plug-type switch state, when bluetooth plug-type switch closing position when, the operation requests for a certain equipment that five anti-machines send response supervisory control of substation machine.
Key information in smart mobile phone APP（Action-item and operating process）Downloaded by five anti-machines, operation maintenance personnel could generate key information after must completing simulated operation on five anti-machines according to operation order.
Smart mobile phone and bluetooth plug-type switch constitute five preventing keys, five preventing key sockets（K1）With device numbering Quick Response Code, that operation indicating lamp constitutes five is anti-lock.
When operation maintenance personnel, which holds operation order, carries out execute-in-place to transformer station, include the key information of operating process and action-item firstly the need of simulated operation is carried out on five anti-machines to generate, key information is downloaded in smart mobile phone APP again, bluetooth plug-type switch is inserted into five preventing key sockets before subsequent operation maintenance personnel to controlled device operator control panel（K1）In, again with five anti-software APP scanning devices numbering Quick Response Codes on smart mobile phone, when scans content is identical with the device numbering of current operation item in smart mobile phone APP, smart mobile phone controls bluetooth plug-type switch closure by Bluetooth communication, when a distant place/handle is pulled on the spot on the spot, operation indicating lamp is lighted, and operation maintenance personnel could pass through handle（QK2）Control device.
When operation maintenance personnel is in supervisory control of substation machine（PC2）, it is necessary to which bluetooth plug-type switch to be first inserted into five preventing key sockets of five anti-machines during upper progress equipment operation（K2）In, again with the device numbering Quick Response Code in chart spacing picture on smart mobile phone scanning supervisory control of substation machine, when scans content is identical with the device numbering of current operation item in smart mobile phone, smart mobile phone is switched by Bluetooth control bluetooth plug-type and closed, send the device numbering of current operation item to five anti-machines by data wire simultaneously, when five anti-machines receive supervisory control of substation machine to the operation requests of the device numbering, sending the equipment operation to supervisory control of substation machine allows order.Supervisory control of substation machine and five anti-machines close on installation.
The operation of operation maintenance personnel is completed by smart mobile phone, is not required to take papery operation order during equipment operation, its operating process meets that the one man operation of unattended operation transformer station requires.
As shown in Figure 2：IC1 is the smart electronicses control box using communication message control device executing agency, and it is provided with a five preventing key sockets（K1）, the terminal of interruption 1 of five preventing key sockets access smart electronicses control box.Device numbering Quick Response Code is posted above five preventing key sockets（QR1）, device numbering Quick Response Code uses Chinese letter co.Lower section access operation warning light is closed in five preventing key sockets（LED1）, smart electronicses control box pass through IO1 terminals drive operation indicating lamp.Handle point is sequentially ingressed into the lower section of closing on of operation indicating lamp（S2）, handle close（S3）, a handle distant place（S4）, handle on the spot（S5）, smart electronicses control box respectively pass through IO2, IO3, IO4, IO5 terminal gather S2, S3, S4, S5 state.
When being operated in operation maintenance personnel to smart electronicses control box, bluetooth plug-type is switched first（S1）It is inserted into five preventing key sockets, then uses smart mobile phone（APP1）Scanning device numbering Quick Response Code, when scans content is identical with the device numbering of current operation item in smart mobile phone, smart mobile phone controls bluetooth plug-type switch closure by Bluetooth communication, and at this moment smart electronicses control box receives five preventing key sockets and closing position（Interrupt 1 signal）And enter five 1 service routines of anti-interruption, 1. program is first shut off interruption 1, to prevent bluetooth plug-type switch relay contact chatter from causing interrupt requests repeatedly.2. after program read a distant place indicate on the spot, when handle on the spot（S5）Not when closing position, the warning information of program output " distant place on the spot handle not on the spot ", call waiting terminates after interrupting 1 involution subprogram；When handle on the spot（S5）During to close position, lighting operation allows indicator lamp, and be delayed 2 seconds states for reading five preventing key sockets, interrupts 1 when five preventing key sockets disconnect then opening, extinguishes operation indicating lamp, and terminate program；Handle point is then read when five preventing key sockets still remain closed（S2）Closed with handle（S3）State.3. handle point（S2）Trip signal message then is sent to equipment executing agency closing position, handle closes（S3）Combined floodgate command message then is sent to equipment executing agency in conjunction position, 2. handle point and handle, which close not return then in conjunction position, continues to scan on the state that a distant place indicates on the spot, handle point, handle close.4. 1 involution subprogram, EP (end of program) are interrupted in program call waiting after operational order is sent.The five anti-1 service routine flow charts that interrupt are shown in Fig. 4, wait 1 involution subprogram to be interrupted to see Fig. 5.
Claims (6)
1. a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification, including five anti-machines, supervisory control of substation machine and five preventing key sockets, it is characterised in that also include by smart mobile phone, bluetooth plug-type switch, device numbering Quick Response Code, operation indicating lamp, wherein：Five preventing key sockets have two pins, five anti-machines of the control loop for accessing equipment to be operated in a series arrangement or the five anti-interrupting input terminals for accessing smart electronicses control box or access, the jaw of bluetooth plug-type switch is engaged with five preventing key socket apertures, in bluetooth plug-type switch in control loop of a pair of the passive normally opened contacts of relay by five preventing key jack bases series connection access device；Smart mobile phone is connected by Bluetooth communication with bluetooth plug-type switch and controls the folding of bluetooth plug-type switch.
2. a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification according to claim 1, it is characterised in that described operation indicating lamp is attempted by between outlet and the ground of five preventing key sockets, is lighted when positive electricity reaches.
3. a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification according to claim 1, it is characterised in that described device numbering Quick Response Code is arranged on beside five preventing key sockets or/and is arranged on the display screen of smart electronicses control box or/and is arranged on the display screen of supervisory control of substation machine.
4. a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification according to claim 1, it is characterised in that described device numbering Quick Response Code is Chinese letter co or QR codes or PDF417 codes.
5. a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification according to claim 1, it is characterised in that five described preventing key sockets are arranged on five anti-machines or/and on supervisory control of substation machine.
6. a kind of transformer station's anti-misoperation locking device based on Quick Response Code identification according to claim 1, it is characterised in that the five anti-APP softwares that can be scanned Quick Response Code and control bluetooth plug-type switch are provided with described smart mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385590.3A CN107465261A (en) | 2016-06-03 | 2016-06-03 | A kind of transformer station's anti-misoperation locking device based on Quick Response Code identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610385590.3A CN107465261A (en) | 2016-06-03 | 2016-06-03 | A kind of transformer station's anti-misoperation locking device based on Quick Response Code identification |
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| Publication Number | Publication Date |
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| CN107465261A true CN107465261A (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610385590.3A Pending CN107465261A (en) | 2016-06-03 | 2016-06-03 | A kind of transformer station's anti-misoperation locking device based on Quick Response Code identification |
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| CN (1) | CN107465261A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084946A (en) * | 2019-05-23 | 2019-08-02 | 国家电网有限公司 | A kind of system and method that five-defence block is used for based on wearable device |
| CN110473393A (en) * | 2019-08-28 | 2019-11-19 | 傲视恒安科技（北京）有限公司 | A kind of smart bluetooth desktop power-supply system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2931701Y (en) * | 2006-06-23 | 2007-08-08 | 朱宗强 | Avoiding miss-locking equipment for microcomputer |
| CN101013635A (en) * | 2006-12-13 | 2007-08-08 | 淄博微联电子有限公司 | Intelligent remote control locking method and apparatus for preventing electric misoperation |
| CN201363001Y (en) * | 2008-12-16 | 2009-12-16 | 泰安慧致电子科技有限公司 | Error prevention key for Bluetooth communication |
| CN103839193A (en) * | 2014-03-07 | 2014-06-04 | 国家电网公司 | Transformer substation anti-misoperation method and system based on two-dimension code identification technology |
| CN204576233U (en) * | 2015-05-07 | 2015-08-19 | 华电国际电力股份有限公司邹县发电厂 | A kind of intelligence of the electric anti-misoperation based on Quick Response Code managing and control system |
-
2016
- 2016-06-03 CN CN201610385590.3A patent/CN107465261A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2931701Y (en) * | 2006-06-23 | 2007-08-08 | 朱宗强 | Avoiding miss-locking equipment for microcomputer |
| CN101013635A (en) * | 2006-12-13 | 2007-08-08 | 淄博微联电子有限公司 | Intelligent remote control locking method and apparatus for preventing electric misoperation |
| CN201363001Y (en) * | 2008-12-16 | 2009-12-16 | 泰安慧致电子科技有限公司 | Error prevention key for Bluetooth communication |
| CN103839193A (en) * | 2014-03-07 | 2014-06-04 | 国家电网公司 | Transformer substation anti-misoperation method and system based on two-dimension code identification technology |
| CN204576233U (en) * | 2015-05-07 | 2015-08-19 | 华电国际电力股份有限公司邹县发电厂 | A kind of intelligence of the electric anti-misoperation based on Quick Response Code managing and control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084946A (en) * | 2019-05-23 | 2019-08-02 | 国家电网有限公司 | A kind of system and method that five-defence block is used for based on wearable device |
| CN110084946B (en) * | 2019-05-23 | 2023-11-14 | 国家电网有限公司 | System and method for five-prevention locking based on wearable equipment |
| CN110473393A (en) * | 2019-08-28 | 2019-11-19 | 傲视恒安科技（北京）有限公司 | A kind of smart bluetooth desktop power-supply system |
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Application publication date: 20171212 |
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