CN106602730A - Mine power monitoring system - Google Patents
Mine power monitoring system Download PDFInfo
- Publication number
- CN106602730A CN106602730A CN201710065579.3A CN201710065579A CN106602730A CN 106602730 A CN106602730 A CN 106602730A CN 201710065579 A CN201710065579 A CN 201710065579A CN 106602730 A CN106602730 A CN 106602730A
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- monitoring
- power
- substation
- power monitoring
- terminal
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 104
- 238000004891 communication Methods 0.000 claims abstract description 34
- 230000001012 protector Effects 0.000 claims description 9
- 238000012806 monitoring device Methods 0.000 claims description 8
- 238000007405 data analysis Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 230000004044 response Effects 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- H02J13/0006—
-
- 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
- H02J13/00019—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 optical means
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- H02J13/0013—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The embodiment of the invention discloses a mine power monitoring system comprising an upper computer arranged on the ground, an on-ground switch set, an underground switch set arranged under the ground, and at least one underground monitoring unit. The underground monitoring unit consists of a power monitoring substation, isolators, terminal equipment and an intrinsically safe power supply. The upper computer is used for collecting and displaying monitoring data of the terminal equipment, configuring parameters of the terminal equipment, and issuing a control instruction to the terminal equipment. The on-ground switch set is communication connection with the upper computer and the underground switch set. The power monitoring substation in communication connection with the underground switch set is used for monitoring the terminal equipment and uploading monitoring data of the terminal equipment. One end of each isolator is connected with the monitoring substation electrically and the other end is connected with the terminal equipment electrically. The intrinsically safe power supply connected with the power monitoring substation electrically is used for providing power for the power monitoring substation. The system has advantages of good real-time performance, fast response, and high stability and reliability.
Description
Technical field
The present embodiments relate to Mine Monitoring technical field, more particularly to a kind of mine electric power monitoring system.
Background technology
China is big coal country of the world, is again a coal fired power generation big country, in the following regular period, based on coal
Energy supply general layout will not change, and coal production is still Chinese national economy important component part.The peace in current colliery
Full production has caused the great attention of country, is also a research topic for having realistic meaning.Underground mining operation, it is special
It is not highly gassy mine, all there is gas potential collision hazard, and underground power supply system failure is the key factor for causing Gas Disaster.
As the development of computer technology, down-hole transformer station are more and more universal using micro computer monitoring, technology is more and more ripe, and part becomes
Power station has been realized in comprehensive automation and unattended duty.
At present, although automatic monitored control system is also applied, but it is primarily directed to ground power supply system.With general power transformation
Institute is different, and Underground Substation is mainly made up of central substation and several working section sub stations.Substation facilities disperses, ring
Border is severe, and the tour and operation of power transformation station equipment is whole manually, and the dispatcher's information communication on ground is not prompt enough,
Causing can not quickly understand, control the ruuning situation of transformer station, and there is a problem to solve in time, easily cause thing
Therefore.Therefore, it is badly in need of setting up a set of down-hole transformer station real-time monitoring system.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of mine electric power monitoring system, can lift mine electric power supervisory control
Stability and reliability.
A kind of mine electric power monitoring system is embodiments provided, is submitted including the host computer and well being arranged on well
Change planes group, and be arranged on the down-hole group of switches and at least one underground monitoring device of down-hole, the underground monitoring device bag
Include power monitoring substation, isolator, terminal unit and intrinsic safety electric source；
The host computer be used for collection and the monitoring data of display terminal, the parameter of configurating terminal device and issue it is right
The control instruction of terminal unit；Switch group connects respectively with the host computer and down-hole group of switches communication on the well
Connect；The communication of the power monitoring substation and the down-hole group of switches is connected, and for monitoring terminal equipment and uploads the terminal
The monitoring data of equipment；One end of the isolator electrically connects with power monitoring substation, and the other end is electrically connected with the terminal unit
Connect；The intrinsic safety electric source is electrically connected with the power monitoring substation, for powering for the power monitoring substation.
Further, the host computer is based on tcp/ip communication agreement and the power monitoring sub-station communication, the electric power
Outstation obtains the monitoring data of the terminal unit based on 485 communication protocols.
Further, the power monitoring substation includes the network switch being connected with the down-hole group of switches, and
Monitoring mainboard, network interface change-over panel, the fiber termination box being connected with the network switch, and the electricity being connected with the intrinsic safety electric source
Source plate, the power panel is the network switch, monitoring mainboard, network change-over panel are powered.
Further, protector is configured with the terminal unit, for the voltage of acquisition terminal equipment, electric current or work(
Rate parameter.
Further, the host computer includes communication memory module, device management module, data analysis module and display tube
Reason module；
The communication memory module, for realizing the communication of the host computer and the terminal unit, and monitors to history
Data are stored and managed；
The device management module, for configuring to terminal unit parameter, and the operation shape of monitoring terminal equipment
State；
The data analysis module, for diagnosing to terminal equipment failure or underground electric network line fault；
The display management module, for the running status of real-time display terminal, operational factor and history number is monitored
According to.
Further, the host computer also includes warning module, for breaking down or underground electric network in terminal unit
During line failure, warning information is sent.
Further, the terminal unit include it is following at least one：High-explosive switch, feeding switch, luminaire, startup
Device and mobile substation.
Further, the down-hole is additionally provided with cable current monitoring sensor, for monitoring the leakage electricity of downhole cable
Stream.
Further, it is configured with data read and write interface on the power monitoring substation.
Further, the power monitoring substation is intrinsic safety type power monitoring substation.
The mine electric power monitoring system provided in the embodiment of the present invention, the host computer on well is by group of switches and well on well
Lower group of switches carries out communication and is connected with the outstation of down-hole, and outstation is connected by isolator with each terminal unit,
Realize collection and display of the host computer to the monitoring data of terminal unit, the configuration of terminal unit parameter and to terminal unit
Or the control of down-hole circuit, real-time is good, fast response time, improves the stability and reliability of mine electric power supervisory control
Property.
Description of the drawings
Fig. 1 is a kind of structural representation of mine electric power monitoring system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of power monitoring substation provided in an embodiment of the present invention.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.May be appreciated
It is that specific embodiment described herein is used only for explaining the present invention, rather than limitation of the invention.Further need exist for explanation
, for the ease of description, part related to the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
Fig. 1 is a kind of structural representation of mine power system provided in an embodiment of the present invention, as shown in figure 1, this enforcement
The mine power system that example is provided includes being arranged on group of switches 2 on host computer 1 and well on well, and the well for being arranged on down-hole
The underground monitoring device 4 of lower group of switches 3 and at least one, the underground monitoring device 4 includes power monitoring substation 41, isolator
42nd, terminal unit 43 and intrinsic safety electric source 44.
The host computer 1 be used for collection and the monitoring data of display terminal 43, the parameter of configurating terminal device 43 and
Issue the control instruction to terminal unit 43；On the well group of switches 2 respectively with the host computer 1 and the down-hole switch
The communication connection of group 3；The power monitoring substation 41 is connected with the down-hole group of switches 3 communication, for monitoring terminal equipment 43
And upload the monitoring data of the terminal unit 43；One end of the isolator 42 electrically connects with outstation 41, the other end with
The terminal unit 43 is electrically connected；The intrinsic safety electric source 44 is electrically connected with the power monitoring substation 41, for for the electric power
Outstation 41 is powered.
Group of switches 2 and down-hole group of switches 3 include respectively at least one network switch on the well, and the down-hole is handed over
The network switch of group 3 of changing planes can adopt explosion-proof switch.
The host computer 1 is by group of switches 2 on the well and down-hole group of switches 3 based on tcp/ip communication agreement and institute
State power monitoring substation 41 to communicate, the power monitoring substation 41 is based on 485 communication protocols and the terminal equipment in communication.
Further, the host computer 1 can include communication memory module, device management module, data analysis module and
Display management module.
The communication memory module, for realizing the communication of the host computer and the terminal unit, and monitors to history
Data are stored and managed.
The device management module, for configuring to terminal unit parameter, and the operation shape of monitoring terminal equipment
State.Specifically, can remotely be set by adjust to the terminal unit Protection parameters value of value parameter and protector of device management module
Put, facilitate user management and operation.
The data analysis module, for diagnosing to terminal equipment failure or down-hole line fault.
The display management module, for the running status of real-time display terminal, operational factor and history number is monitored
According to.The module can be by underground power supply used network with the figure (high-explosive switch, feeding switch, mobile substation etc.) of physical end equipment
Shown by the display screen of host computer with actual power circuit, and by the running status and operational factor of terminal unit
(such as power supply parameter) is shown in real time by host computer display screen, facilitates staff to be checked.In addition, can be by end
The operational factor of end equipment intuitively shown in the form of independent picture electric instrument, facilitates staff to be checked；Also
History monitoring data can be shown in the form of form or curve.
Host computer is also equipped with mistake from place's function, host computer can be avoided caused by mistake to crash or exited without reason etc. seriously
The generation of problem, it is reliable and stable that safeguards system is run.
Further, the host computer can also include warning module, for breaking down or down-hole in terminal unit
When power network line breaks down, warning information is sent.Specifically can be by corresponding figure in display screen display picture with red sudden strain of a muscle
Bright mode sends alarm, and/or activation sound alarm, so as to remind staff timely to carry out troubleshooting.
Fig. 2 gives the structural representation of power monitoring substation provided in an embodiment of the present invention, as shown in Fig. 2 the electric power
Outstation 41 includes the network switch 411 being connected with the down-hole group of switches 3, and with the network switch
411 connection monitoring mainboard 412, network interface change-over panel 413, fiber termination boxs 414, can also include display screen (not shown) and with
The power panel (not shown) of the intrinsic safety electric source connection, the power panel is the network switch 411, monitoring mainboard
412nd, network change-over panel 413 is powered.Be provided with RS485 communication interfaces on the monitoring mainboard 412 of power monitoring substation 41, can with match somebody with somebody
The terminal unit for being equipped with RS485 interfaces enters row data communication based on MODBUS communication protocols, and network interface change-over panel 413 is used for will configuration
There is the terminal unit of Ethernet power port, by its Ethernet power port after isolation conversion, access network switch 411 is corresponding
Input port, realizes the data communication of network interface terminal unit, and fiber termination box 414 is used to set the terminal for being configured with Ethernet optical port
It is standby, through the gigabit or 100,000,000 optical port modules of the access network switch 411 of fiber termination box 414, realize the data of optical port terminal unit
Communication, the display screen can be used for the display of each interface message of power monitoring substation 41 and terminal unit 43.Preferably, institute
Stating monitoring mainboard 412 can adopt STM32 kernel control chips.
Power monitoring substation 41 is preferably arranged to intrinsic safety structure, is carried by Flameproof and intrinsically safe power supply box intrinsic safety electric source
For direct current 21V power supplys.Power monitoring substation inside arranges independent power circuit and supply voltage is converted to into the network switch
411st, monitor the voltage needed for each several parts such as mainboard 412, network change-over panel 413 and display screen to be powered respectively.
Further, protector 431 is configured with the terminal unit 43, for the voltage of acquisition terminal equipment 43, electricity
Stream or power parameter and number of switches data, and above-mentioned parameter and data are uploaded in real time by outstation upper
Machine, is analyzed by host computer, is stored and is shown, host computer is capable of achieving the remotely control to terminal unit and is broken after analysis
Electricity, close a floodgate and locking function, earth leakage search/lockout and anti-overstep tripping defencive function are excessively stream, overvoltage, electric leakage, three-phase imbalance, disconnected
Equal defencive function.The terminal unit 43 can be included in high-explosive switch, feeding switch, trigger, mobile substation extremely
One item missing.It should be noted that the protector 431 for depicting setting in high-explosive switch merely exemplary in Fig. 2, other-end sets
Protector is may also set up in standby.
Power monitoring substation 41 can acquisition time each terminal unit 43 the monitoring data such as the parameters of electric power of protector 431
Information, is then packaged into unified form, and wait is received after the order of acquisition monitoring data of host computer 1, immediately by each bag
Data is activation is to host computer 1；If power monitoring substation 41 is received after the control command of the transmission of host computer 1, electric power is stopped immediately
The all working of outstation 41, performs the control command, and for example, controlling corresponding protector carries out breaking-closing operating.Electric power
The intermediate equipment that outstation 41 is communicated as mine electric power monitoring system, help system completes the remote measurement of power monitoring, distant
Letter, remote regulating, remote control and remote viewing function.
Further, the power monitoring substation 41 possesses data storage function, configures on the power monitoring substation 41
There is data read and write interface.The data in the data reader/writer such as reading such as flash disk, hard disk outstation can be passed through in down-hole, in well
When upper can by data reader/writer data import host computer 1, so can ensure that the reliability of digital independent, with prevent due to
Network error causes the data on power monitoring substation 41 normally to upload to the problem of host computer 1.
Multiple underground monitoring devices 4 can be set in down-hole, the power monitoring substation 41 of each underground monitoring device 4 is responsible for one
The management of the protector in individual region, multiple power monitoring substations 41 realize the management respectively in whole downhole monitoring region, each electricity
Power outstation 41 connects up down-hole group of switches 3, and structure defines down-hole power monitoring network, and down-hole group of switches 3 is led to
Cross group of switches 2 on well to be attached with host computer 1, realize the unified management of mine electric power monitoring system.
Further, the down-hole is additionally provided with photographic head 45, for obtaining each equipment of down-hole and power network line in real time
Monitored picture.
Further, the down-hole is additionally provided with cable current monitoring sensor 46, for monitoring the leakage of downhole cable
Electric current, the cable current monitoring sensor 46 is connected 41 with power monitoring substation.Working environment under mine is very poor, work surface
In a humidity environment Jing is often pulled cable, easily causes cable insulation to destroy, and cable current monitoring sensor 46 is by monitoring
Leakage Current in cable, if the Leakage Current in cable is not in the current threshold of setting, then it is assumed that the cable insulation effect
Difference, can send early warning, remind staff to be processed.
The mine electric power monitoring system that the present embodiment is provided, the host computer on well is exchanged by group of switches on well and down-hole
Unit carries out communication and is connected with the outstation of down-hole, and outstation is connected by isolator with each terminal unit, is realized
Collection and display of the host computer to the monitoring data of terminal unit, the configuration of terminal unit parameter and to terminal unit or well
The control of lower circuit, real-time is good, fast response time, improves the stability and reliability of mine electric power supervisory control.
Above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that this
It is bright to be not limited to specific embodiment described here, various obvious changes, again can be carried out for a person skilled in the art
Adjustment and replacement are without departing from protection scope of the present invention.Therefore, although by above example the present invention has been carried out compared with
For detailed description, but the present invention is not limited only to above example, without departing from the inventive concept, can be with
Including more other Equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of mine electric power monitoring system, it is characterised in that including group of switches on the host computer and well being arranged on well, with
And the down-hole group of switches and at least one underground monitoring device of down-hole are arranged on, the underground monitoring device includes power monitoring
Substation, isolator, terminal unit and intrinsic safety electric source；
The host computer is used for collection and the monitoring data of display terminal, the parameter of configurating terminal device and issues to terminal
The control instruction of equipment；Switch group is connected respectively with the host computer and down-hole group of switches communication on the well；Institute
State the communication of power monitoring substation and the down-hole group of switches to be connected, for monitoring terminal equipment and upload the terminal unit
Monitoring data；One end of the isolator electrically connects with power monitoring substation, and the other end is electrically connected with the terminal unit；It is described
Intrinsic safety electric source is electrically connected with the power monitoring substation, for powering for the power monitoring substation.
2. system according to claim 1, it is characterised in that the host computer is based on tcp/ip communication agreement and the electricity
Power outstation communicates, and the power monitoring substation is based on 485 communication protocols and the terminal equipment in communication.
3. system according to claim 1, it is characterised in that the power monitoring substation includes and the down-hole switch
The network switch of group connection, and monitoring mainboard, network interface change-over panel, the fiber termination box being connected with the network switch, with
And the power panel being connected with the intrinsic safety electric source, the power panel is the network switch, monitoring mainboard and network change-over panel
Power supply.
4. system according to claim 1, it is characterised in that protector is configured with the terminal unit, for gathering
The voltage of terminal unit, electric current or power parameter.
5. system according to claim 1, it is characterised in that the host computer includes communication memory module, equipment control
Module, data analysis module and display management module；
The communication memory module, for realizing the communication of the host computer and the terminal unit, and to history monitoring data
Stored and managed；
The device management module, for configuring to terminal unit parameter, and the running status of monitoring terminal equipment；
The data analysis module, for diagnosing to terminal equipment failure or underground electric network line fault；
The display management module, for the running status of real-time display terminal, operational factor and history monitoring data.
6. system according to claim 5, it is characterised in that the host computer also includes warning module, in terminal
When device fails or underground electric network line failure, warning information is sent.
7. system according to claim 1, it is characterised in that the terminal unit include it is following at least one：Height pops
Pass, feeding switch, luminaire, trigger and mobile substation.
8. system according to claim 1, it is characterised in that the down-hole is additionally provided with cable current monitoring sensor,
For monitoring the Leakage Current of downhole cable.
9. system according to claim 1, it is characterised in that be configured with reading and writing data on the power monitoring substation and connect
Mouthful.
10. system according to claim 1, it is characterised in that the power monitoring substation is intrinsic safety type power monitoring point
Stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710065579.3A CN106602730A (en) | 2017-02-06 | 2017-02-06 | Mine power monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710065579.3A CN106602730A (en) | 2017-02-06 | 2017-02-06 | Mine power monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106602730A true CN106602730A (en) | 2017-04-26 |
Family
ID=58585789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710065579.3A Pending CN106602730A (en) | 2017-02-06 | 2017-02-06 | Mine power monitoring system |
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| Country | Link |
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| CN (1) | CN106602730A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983024A (en) * | 2018-07-14 | 2018-12-11 | 山东工商学院 | Mining earth leakage protective test and distant place closing device |
| CN109120066A (en) * | 2018-08-24 | 2019-01-01 | 淮北矿业股份有限公司 | A kind of coal mine electric power monitoring system transmission device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070206644A1 (en) * | 2006-03-02 | 2007-09-06 | Abb Technology Ag | Remote terminal unit and monitoring, protection and control of power systems |
| CN201851162U (en) * | 2010-11-20 | 2011-06-01 | 山西晋城无烟煤矿业集团有限责任公司 | Wireless monitoring device for coal mine roof separation layer |
| CN205210649U (en) * | 2015-11-05 | 2016-05-04 | 广东罗尔科技有限公司 | Be suitable for coal mine power supply monitored control system of multiple agreement integrated protection ware |
| CN206759161U (en) * | 2017-02-06 | 2017-12-15 | 煤炭科学技术研究院有限公司 | A kind of mine electric power monitoring system |
-
2017
- 2017-02-06 CN CN201710065579.3A patent/CN106602730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070206644A1 (en) * | 2006-03-02 | 2007-09-06 | Abb Technology Ag | Remote terminal unit and monitoring, protection and control of power systems |
| CN201851162U (en) * | 2010-11-20 | 2011-06-01 | 山西晋城无烟煤矿业集团有限责任公司 | Wireless monitoring device for coal mine roof separation layer |
| CN205210649U (en) * | 2015-11-05 | 2016-05-04 | 广东罗尔科技有限公司 | Be suitable for coal mine power supply monitored control system of multiple agreement integrated protection ware |
| CN206759161U (en) * | 2017-02-06 | 2017-12-15 | 煤炭科学技术研究院有限公司 | A kind of mine electric power monitoring system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983024A (en) * | 2018-07-14 | 2018-12-11 | 山东工商学院 | Mining earth leakage protective test and distant place closing device |
| CN109120066A (en) * | 2018-08-24 | 2019-01-01 | 淮北矿业股份有限公司 | A kind of coal mine electric power monitoring system transmission device |
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Application publication date: 20170426 |
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