CN107918340A - A kind of power distribution automation adjustment method on the spot based on simulation main website - Google Patents
A kind of power distribution automation adjustment method on the spot based on simulation main website Download PDFInfo
- Publication number
- CN107918340A CN107918340A CN201711240938.0A CN201711240938A CN107918340A CN 107918340 A CN107918340 A CN 107918340A CN 201711240938 A CN201711240938 A CN 201711240938A CN 107918340 A CN107918340 A CN 107918340A
- Authority
- CN
- China
- Prior art keywords
- main website
- debugging
- simulation
- power distribution
- spot
- 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
- 238000004088 simulation Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 5
- 230000011664 signaling Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000009472 formulation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 238000012795 verification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
Abstract
The invention discloses a kind of power distribution automation adjustment method on the spot based on simulation main website.Support original distribution main station system IEC61968 model criterias, establish an interim simulation main website, the required various information in display scheduling end in distribution terminal Commissioning field, and can be synchronized with actual motion main website.Live power distribution automation simulation main website joint debugging method, by way of full automatic access is debugged and what debugging was reported automatically generates, can find potential trouble point at once, carry out defect elimination at the scene in time.The power distribution automation of main website adjustment method on the spot is simulated at the same time, is solved to be now able to the contradiction that field test need to must be set up communicate with main website, is reduced the time that terminal is debugged on the spot, the efficiency that raising power distribution automation is debugged on the spot.
Description
Technical field
The present invention relates to telecontrol information in distribution automation system to gather field, be international standard IEC61850 distribution from
A kind of application in dynamicization field.
Background technology
With the digitizing of power distribution network, information-based, automation, interactive and intelligentized development, to the distant of distribution terminal
The requirement for the efficiency that control, remote measurement, the standardization of remote signalling " three is distant " information, distribution terminal are debugged is higher and higher.Terminal and reality at present
The laying of communication equipment takes a long time between the operation main website of border, and the debugging to distribution terminal brings very big unfavorable.At present
When carrying out power distribution automation and debugging on the spot, it is necessary to keep communicating with main website, need, by terminal commissioning staff, also to need one at the scene
People is coordinated in actual motion main website, in communications facility when breaking down, be able to not will be got in touch with main website, is caused existing
Field debugging can not be normally carried out, and cause the significant wastage of personnel and time.
(1) data sent on distribution terminal will have clear and definite implication, and different terminal equipment manufacturer formulates a unified mark
Table masterplate and automatic generation method on schedule；
(2) distribution terminal equipment needs to have self-described function and unified interface specification；
(3) effectively power distribution automation quickly access with joint debugging, acceptance method, ensure the practical of distribution system；
(4) the terminal device field adjustable flow of standard, automatically generates terminal debugging report, can promptly and accurately exclude existing
Field failure；
(5) security, reliability, the requirement of stability are reached.
In traditional power distribution automation is debugged on the spot, distribution terminal (ring main unit DTU, on-pole switch FTU etc.) information
Specification access distribution main website needs end side personnel manually to carry out the examination and submission of three distant table signals, then is safeguarded by main website
Personnel with the information that terminal commissioning staff provides point by point check examination.Transmission test between distribution terminal and distribution main website
By be accomplished manually, terminal and the remote debugging efforts efficiency of main website it is low, field basic debugging to communication dependence it is big, be unfavorable for
The Large scale construction of electrical power distribution automatization system and popularization and application.Remote signalling, remote measurement, remote controlled point table are transmitted by manual type, then
By the mode of information point table input database, there are relevance between the indefinite and various data of data implication is not strong manually for main website
The problem of.The joint debugging of distribution end access at present external environment restriction, joint debugging heavy workload, the scene such as communicated needs power off time to grow
Etc. problem.
The present invention is carried with easy to commissioning staff by designing a kind of simulation main website for depositing in laptop,
When carrying out power distribution automation and debugging on the spot, it is complete to be not required to the communication equipment laying of terminal and actual motion main website, can carry out
Full process automatization is debugged, and multiple terminals that current actual motion main website faces while the coordination difficulty of access is reduced, according to existing
Field debugging situation, debugging report can be read by automatically generating, and improve debugging efficiency.
The content of the invention
Goal of the invention：The meaning that simulation main website can be carried is to solve live distribution power automation terminal and does not possess and main website
The contradiction that can not be debugged during communication, is not required to keep communicating freely with terminal commissioning staff's moment when main website maintenance personnel debugs at the scene
It is logical, improve commissioning staff's efficiency.Meanwhile simulation main website can solve distribution power automation terminal operation and maintenance information point table before putting into operation and advise
Generalized and the difficulty issued automatically, in debugging at the scene, establish the debugging of standard and check and accept system, can be in time by simulating main website
The debugging report of generation finds field failure, such as order of connection problem, crosses flow problem etc..Simulation main station system possesses specified
The inputting interface of overcurrent value so that the adaptability of field adjustable is stronger.Debugging, which is carried out, using simulation main website avoids multiple terminals
The problem of accessing at the same time.
Technical solution：In order to solve the above technical problems, the technical solution adopted by the present invention is：Invention is a kind of based on simulation master
Stand and debug the distribution terminal information method that quick joint debugging is automatically accessed with overall process on the spot of subsystem, carry out power distribution automation
Debug on the spot.
(1) mold sync and the figure for simulating main website are synchronous.The model of actual motion main website and graphic file are synchronized to
Simulate in main website, synchronizing content includes distribution terminal information, passage and stipulations etc.；In debugging at the scene, simulation main website receives
After data message, compare the information such as channel number, IP address, the network port, the state that puts into operation, if the letter synchronous with actual motion main website
Manner of breathing is consistent, then returns to confirmation message, if inconsistent with synchronizing information, in the instant debugging report of simulation main website generation into
Row feedback.
(2) terminal commissioning staff can learn the accuracy of " three is distant " data by way of secure accessing platform；
(3) debugging on the spot for distribution terminal is realized by way of debugging process standardization, including different interval data
On send order, telemetry and overcurrent overload alarm signal；
Hardware layer explanation：The domestic mainstream server of D5200 (power distribution network train operation control and management system) is installed, for scene
The wireless module or cable that commissioning staff uses.Operating system layer：(SuSE) Linux OS, up to dream database.D5200 systems can
Directly apply to the quick of power distribution automation to debug on the spot, realize automatic decision wiring line sequence, protection remote measurement matching, it is final automatic
Generation debugging report.
Brief description of the drawings
Fig. 1 carries out power distribution automation using simulation main website and debugs schematic diagram on the spot；
Fig. 2 simulations main website mold sync flow chart.
Embodiment
The present invention is further described with reference to specific embodiment.
(1) on the premise of distribution terminal is installed in place at the scene, carrying out scene using simulation main website, debugging can be put on the spot
The de- dependence to communication, realize terminal on the spot quickly with main website joint debugging.Simulation main website debugging system is debugged using subsystem is debugged
States model, automatic point table generation technique, with actual motion main website simultaneous techniques, realize that power distribution automation simulation main station system is preposition
Collection and real time data processing.The debugging enironment completely the same with operation main website, verification " three are realized at the scene by simulating main website
It is distant ", terminal configuration parameters, the correctness of stipulations configuration etc., ensure it is consistent with main website end acceptance criteria, flow, realize distribution oneself
Dynamicization is quickly debugged on the spot；
(2) deployment simulation main station system debugging system, distribution terminal information full mistake of the deployment based on power distribution automation main station
Process automation access function module, actual motion main website is according to each self-generating model of result of the information exchange sent in terminal producer
Configuration file, then actual motion main website is according to the database of distribution terminal self-described fileinfo renewal main station system, formulation
Based on " it is three distant " standard point table, and then mold sync carried out by distribution main website management tool exp_man, passes through Graph texts
Part figure is synchronized to simulation main website.When debugging on the spot at the scene, distribution terminal commissioning staff can lead according to field condition with simulation
Information in standing is checked；
(3) required standard power distribution automation debugs flow on the spot, and the order of data is sent in unified field adjustable wiring, from
And ensure the correctness of field connection line sequence.According to field condition, the rated value of input overcurrent overload in simulation main website, from
It is dynamic to judge whether overcurrent Overload, CT (current transformer) equipment work normally and overcurrent overload announcement
Whether alert signal can normally send；
(4) method by automating generation terminal debugging report, debugs reporting requirements with reference to on-site terminal, automatically generates
Terminal debugging result is reported, all failures that distribution terminal is likely to occur in debugging process on the spot, such as wiring are shown in report
Sequence error, alarm signal can not generate, current transformer accuracy is sub-standard, switch changed position and remote signals be not immediately right
The problems such as answering.Reiterate to standardize herein and debug the importance of flow, sent in debugging process in remote signals and telemetry
The deviation for sequentially and on defined sending order to produce, can displaying scene wiring error in the debugging report of generation；
Each one of use site main flow terminal any producer's distribution terminal such as FTU, DTU, foundation meet project distribution end
Hold joint debugging, acceptance criteria system, for the overall process with regard to the quick joint debugging test of system of simulation main website and power distribution automation main station
Quickly access.During inspection, semaphore, change debugging dosage order, conversion terminal protection definite value etc. are sent by changing on FTU, DTU
Disturbing factor verification simulation main website carries out the reliability of power distribution automation adjustment method on the spot.
Claims (5)
1. a kind of power distribution automation adjustment method on the spot based on simulation main website, it is characterised in that simulation main website can actively be sent out
The distribution terminal that existing engineering site is newly installed, and according to the self-described configuration information sent on distribution terminal, create distribution terminal amount
Model library is surveyed, the remote measurement sent on automatic identification distribution terminal, remote signalling real time data, according to field failure, automatically generate debugging report
Accuse, comprise the following steps that：
(1) what simulation main website and actual motion main website formulated unification is the standardization point table of " three is distant " based on remote control, remote measurement, remote signalling
Template, the equipment that template is suitable for each main flow terminal producer, by main website maintenance personnel by being exported in actual motion main website, and according to
The information that distribution terminal producer provides is verified；
(2) it is synchronous with actual motion main website progress mold sync and figure to simulate main website；
(3) installation is complete in engineering site for distribution terminal, accesses power distribution automation communication network, and simulation main website front server is beaten
Open network monitoring service；
(4) distribution terminal on the spot by way of standardizing joint debugging realized by debugging process, and field adjustable order is formulated before debugging, existing
Debugging should be performed in strict accordance with the debugging order of formulation on the spot for field.
2. according to the method described in claim 1, it is characterized in that：The distribution terminal must be with reality before removing debugging
Main website establishes the rigid condition of communication.
3. according to the method described in claim 1, it is characterized in that：Establish the distribution terminal debugging stream of the standard based on " three is distant "
Journey and acceptance criteria system, the relation of signal sequence and field connection is sent in analysis, automatically generates debugging report immediately, is found existing
Field wiring faults.
4. according to the method described in claim 1, it is characterized in that：Main website is simulated before telemetry is received, passes through simulation
Value is defined in main website Debugging interface input current protection customization, so as to judge that live electric current whether there is overcurrent condition, strengthens hair
Send the levels of precision of alarm signal.
5. according to the method described in claim 1, it is characterized in that：Simulation main website and actual motion main website use simultaneous techniques,
Realize power distribution automation simulation main station system front-collection and real time data processing, simulation main website at the scene with actual motion main website
Possesses completely the same debugging enironment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240938.0A CN107918340A (en) | 2017-11-30 | 2017-11-30 | A kind of power distribution automation adjustment method on the spot based on simulation main website |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240938.0A CN107918340A (en) | 2017-11-30 | 2017-11-30 | A kind of power distribution automation adjustment method on the spot based on simulation main website |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107918340A true CN107918340A (en) | 2018-04-17 |
Family
ID=61897180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711240938.0A Pending CN107918340A (en) | 2017-11-30 | 2017-11-30 | A kind of power distribution automation adjustment method on the spot based on simulation main website |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107918340A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116144A (en) * | 2018-07-27 | 2019-01-01 | 国网湖北省电力有限公司咸宁供电公司 | A kind of prefix type terminal detection platform of distribution |
| CN109444582A (en) * | 2018-11-08 | 2019-03-08 | 积成电子股份有限公司 | The automatic adjustment method in distribution terminal side based on live mobile terminal and simulation main website |
| CN110095684A (en) * | 2019-05-17 | 2019-08-06 | 南方电网科学研究院有限责任公司 | A kind of terminal connection relationship method of calibration, equipment and distribution terminal test equipment |
| CN110531724A (en) * | 2019-09-17 | 2019-12-03 | 国网辽宁省电力有限公司辽阳供电公司 | A kind of automatic sample definition method of telemetering based on smart grid Dispatching Control System |
| CN110618328A (en) * | 2019-09-26 | 2019-12-27 | 国网湖南省电力有限公司 | On-site joint debugging test method for power distribution terminal |
| CN111799889A (en) * | 2020-07-24 | 2020-10-20 | 国网湖北省电力有限公司黄石供电公司 | Debugging method for general efficient processing of urban network distribution network automatic terminal |
| CN112702384A (en) * | 2020-11-25 | 2021-04-23 | 易源士创信息科技(南京)有限公司 | Device plug and play implementation method based on IEC 61850/IEC CIM standard model |
| CN113972747A (en) * | 2021-12-23 | 2022-01-25 | 广州思泰信息技术有限公司 | Automatic closed-loop debugging device and method for distribution network automation terminal |
| CN114184887A (en) * | 2021-11-29 | 2022-03-15 | 国网江苏省电力有限公司南京供电分公司 | System and method for diagnosing FTU fault on site |
| CN115395651A (en) * | 2022-08-30 | 2022-11-25 | 国网山东省电力公司蒙阴县供电公司 | Master station simulation system for protection debugging |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150006141A1 (en) * | 2013-06-26 | 2015-01-01 | International Business Machines Corporation | Method, computer program and system providing real-time power grid hypothesis testing and contigency planning |
| CN104269934A (en) * | 2014-10-23 | 2015-01-07 | 国家电网公司 | Transformer substation monitoring information debugging method based on mobile type simulating and dispatching main station |
| CN104635084A (en) * | 2015-02-03 | 2015-05-20 | 国家电网公司 | Distribution automation equipment transmission test method based on simulator station |
| CN105262230A (en) * | 2015-11-26 | 2016-01-20 | 国网辽宁省电力有限公司大连供电公司 | Method for establishing portable scheduling master station system to debug newly-built substation |
| CN106771760A (en) * | 2016-12-30 | 2017-05-31 | 国网天津市电力公司 | A kind of distributed FA functional diagnosis method based on main website simulation |
-
2017
- 2017-11-30 CN CN201711240938.0A patent/CN107918340A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150006141A1 (en) * | 2013-06-26 | 2015-01-01 | International Business Machines Corporation | Method, computer program and system providing real-time power grid hypothesis testing and contigency planning |
| CN104269934A (en) * | 2014-10-23 | 2015-01-07 | 国家电网公司 | Transformer substation monitoring information debugging method based on mobile type simulating and dispatching main station |
| CN104635084A (en) * | 2015-02-03 | 2015-05-20 | 国家电网公司 | Distribution automation equipment transmission test method based on simulator station |
| CN105262230A (en) * | 2015-11-26 | 2016-01-20 | 国网辽宁省电力有限公司大连供电公司 | Method for establishing portable scheduling master station system to debug newly-built substation |
| CN106771760A (en) * | 2016-12-30 | 2017-05-31 | 国网天津市电力公司 | A kind of distributed FA functional diagnosis method based on main website simulation |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116144A (en) * | 2018-07-27 | 2019-01-01 | 国网湖北省电力有限公司咸宁供电公司 | A kind of prefix type terminal detection platform of distribution |
| CN109444582B (en) * | 2018-11-08 | 2020-10-09 | 积成电子股份有限公司 | Automatic debugging method for power distribution terminal side based on field mobile terminal and analog master station |
| CN109444582A (en) * | 2018-11-08 | 2019-03-08 | 积成电子股份有限公司 | The automatic adjustment method in distribution terminal side based on live mobile terminal and simulation main website |
| CN110095684A (en) * | 2019-05-17 | 2019-08-06 | 南方电网科学研究院有限责任公司 | A kind of terminal connection relationship method of calibration, equipment and distribution terminal test equipment |
| CN110095684B (en) * | 2019-05-17 | 2022-02-15 | 南方电网科学研究院有限责任公司 | Terminal connection relation checking method and device and power distribution terminal testing device |
| CN110531724A (en) * | 2019-09-17 | 2019-12-03 | 国网辽宁省电力有限公司辽阳供电公司 | A kind of automatic sample definition method of telemetering based on smart grid Dispatching Control System |
| CN110618328A (en) * | 2019-09-26 | 2019-12-27 | 国网湖南省电力有限公司 | On-site joint debugging test method for power distribution terminal |
| CN111799889A (en) * | 2020-07-24 | 2020-10-20 | 国网湖北省电力有限公司黄石供电公司 | Debugging method for general efficient processing of urban network distribution network automatic terminal |
| CN112702384A (en) * | 2020-11-25 | 2021-04-23 | 易源士创信息科技(南京)有限公司 | Device plug and play implementation method based on IEC 61850/IEC CIM standard model |
| CN112702384B (en) * | 2020-11-25 | 2022-07-22 | 易源士创信息科技(南京)有限公司 | Device plug and play implementation method based on IEC 61850/IEC CIM standard model |
| CN114184887A (en) * | 2021-11-29 | 2022-03-15 | 国网江苏省电力有限公司南京供电分公司 | System and method for diagnosing FTU fault on site |
| CN113972747A (en) * | 2021-12-23 | 2022-01-25 | 广州思泰信息技术有限公司 | Automatic closed-loop debugging device and method for distribution network automation terminal |
| CN113972747B (en) * | 2021-12-23 | 2022-04-08 | 广州思泰信息技术有限公司 | Automatic closed-loop debugging method for distribution network automation terminal |
| CN115395651A (en) * | 2022-08-30 | 2022-11-25 | 国网山东省电力公司蒙阴县供电公司 | Master station simulation system for protection debugging |
| CN115395651B (en) * | 2022-08-30 | 2023-07-14 | 国网山东省电力公司蒙阴县供电公司 | Master station simulation system for protection debugging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107918340A (en) | A kind of power distribution automation adjustment method on the spot based on simulation main website | |
| CN107346917B (en) | Secondary device based on virtual machine integrates joint debugging method | |
| CN103176084B (en) | Intelligent substation simulation system in panoramic replace mode and integration testing method for intelligent substation simulation system | |
| CN104460346B (en) | Feeder automation action logic test method based on power distribution terminal service verification | |
| CN105373655B (en) | A kind of method of one electrical secondary system connection figure of organic association Intelligent transformer station | |
| CN101546472B (en) | Implement method of integrated universal simulation test system for electric network scheduling and electric quantity collection | |
| CN104820635B (en) | A kind of self-closing ring gauge about robustness testing method based on the semantic parsing of dynamic script | |
| CN112765258B (en) | Power distribution network graph model checking management system and method thereof | |
| CN106971663B (en) | A kind of wind power plant analogue system and method | |
| CN108400908A (en) | Supervisory control of substation information checks and accepts device and method automatically | |
| CN108257439A (en) | A kind of distribution automation Training Methodology and analogue system for adapting to various modes | |
| CN108923953A (en) | A kind of virtual main station system of power remote machine debugging | |
| CN107819647B (en) | Intelligent substation station control layer network tester | |
| CN104483842A (en) | Regulation and control integrated automatic master station comparison method | |
| CN110784020A (en) | Automatic checking and accepting equipment, system and method for monitoring information | |
| CN113422820A (en) | Automatic joint debugging device and method for main station telecontrol information | |
| CN204291050U (en) | A kind of dispatching and monitoring information check system | |
| CN107666179B (en) | Method and system for updating information of power distribution automation graph-model interaction point table | |
| CN104868599A (en) | Intelligent substation message simulation test and association analysis system, and simulation method | |
| CN105262211A (en) | Distribution master station and terminal synchronous on-line self-diagnosis method | |
| CN110991037A (en) | Intelligent substation test simulation system based on SCD | |
| CN113437798B (en) | Master-substation data consistency verification method for master-substation telecontrol information | |
| CN110989547A (en) | Detection method and system for intelligent substation one-key sequence control system | |
| CN105680441A (en) | Simulated replacement technique-based simulated point-alignment device | |
| CN111046543A (en) | Intelligent substation test simulation method |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 225009 Weiyang Road, Jiangsu, China, No. 179, No. Applicant after: YANGZHOU POWER SUPPLY BRANCH OF STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Applicant after: NARI TECHNOLOGY Co.,Ltd. Applicant after: STATE GRID CORPORATION OF CHINA Address before: No. 179, Weiyang Road, Yangzhou City, Yangzhou City, Jiangsu Province Applicant before: YANGZHOU POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER Co. Applicant before: NARI TECHNOLOGY Co.,Ltd. Applicant before: State Grid Corporation of China |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180417 |