CN108631447A - Unattended intelligent transformer substation system - Google Patents

Unattended intelligent transformer substation system Download PDF

Info

Publication number
CN108631447A
CN108631447A CN201810863934.6A CN201810863934A CN108631447A CN 108631447 A CN108631447 A CN 108631447A CN 201810863934 A CN201810863934 A CN 201810863934A CN 108631447 A CN108631447 A CN 108631447A
Authority
CN
China
Prior art keywords
monitoring
transformer substation
video
substation
intelligent transformer
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.)
Withdrawn
Application number
CN201810863934.6A
Other languages
Chinese (zh)
Inventor
顾华
孙梁
胡斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaan Suzhou General Amperex Technology Ltd
Original Assignee
Huaan Suzhou General Amperex Technology Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huaan Suzhou General Amperex Technology Ltd filed Critical Huaan Suzhou General Amperex Technology Ltd
Priority to CN201810863934.6A priority Critical patent/CN108631447A/en
Publication of CN108631447A publication Critical patent/CN108631447A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit 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
    • H02J13/00006Circuit 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
    • H02J13/00019Circuit 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/124Systems 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 wired telecommunication networks or data transmission busses

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Alarm Systems (AREA)

Abstract

The invention discloses a kind of unattended intelligent transformer substation systems,Including the supervisory control of substation terminal being arranged in several substations,Collected data are uploaded to monitoring center by supervisory control of substation terminal by fiber optic network,Monitoring center mutually transmits signal with client by super five-pointed star Shielded Twisted Pair,Supervisory control of substation terminal includes connecting the hard disk video recorder of audio-video monitoring device,Gate inhibition's inspection device and the environment monitoring device being connect with data processing terminal,Power plant,Safety apparatus and warning device,Audio-video monitoring device is also connect with intelligent video analysis server,Monitoring center is provided with alarming and managing platform,Data processing terminal is by substation,The monitoring informations such as Auxiliary Power Unit are integrated and are uploaded to monitoring center,Realize the centralized management of substation equipment and running environment information,It is accurate and reliable with alarm,The live evidence of alarm is provided and retained in time.

Description

Unattended intelligent transformer substation system
Technical field
The present invention relates to technical field of electric power, and in particular to unattended intelligent transformer substation system.
Background technology
The power generation and consumption system being made of links such as power generation, transmission of electricity, power transformation, distribution and electricity consumptions when electric system, Wherein substation is the core link of electric system, is responsible for high-low pressure transformation and the power supply task of region, substation's tool Have huge amount, it is wide less than distribution and very to being located in meagrely-populated region the characteristics of, bring inconvenience to maintenance management.
With the in-depth reform of electric power bear management system, Substation Automation System is constantly progressive, unmanned mainboard or value It keeps pattern to be widelyd popularize in electric system, in addition to " four is distant for original comprehensive automation system of transformer substation (SCADA system) Outside (remote control, telemetering, shakes tune at remote signalling) " function, it is distant that initial stage unattended or on duty also introduces necessary and irreplaceable the 5th " remote viewing ", by video monitoring system, monitoring center can carry out monitoring remote video to each substation, so as to timely, direct Understand field condition.
Production management is no doubt extremely important, and trouble free service (antitheft, fire prevention etc.) also can not be ignored, for the theft of substation Case always just has generation, and the fire caused by charging equipment in station is also commonplace, so all can not before substation puts into operation Ripe anti-theft fireproof system.It, can also be in station stage by stage, in batches simultaneously in order to meet the needs of substation field operation and management The systems such as deployed environment monitoring, SF6 leakage alarms, gate inhibition, air conditioner ventilation, plumbing.
Many substations of State Grid Corporation of China have all been done step-by-step unattended or on duty at present, are power department saving Human resources, improve the efficiency of management, improve economic benefit.
With the release of intelligent grid construction, intelligent substation more becomes an indispensable composition in intelligent grid Part.By construction for many years, power industry unattended system common problem is at present:User is in respective power transformation Stand etc. and to have had been carried out partial video monitoring, rotating ring monitoring and integrated warning system, but mostly substep, implement in batches, lead to system Respective independent operating, or even often set system is required for independent administrative staff, it is difficult to accomplish the comprehensively monitoring of multisystem, concentrate tube Reason, virtually reduces the high efficiency of system, increases the management cost of system.For a user, how by dispersion to be System carries out unified networking monitoring and is only the current task of top priority to ensure that original investment will not waste.
Invention content
The technical problem to be solved in the present invention is to provide a kind of unattended intelligent transformer substation systems, by relatively independent prison It controls System and Surroundings monitoring fusion and realizes integrated monitoring analysis decision, improve the reliability of the safe operation of substation equipment, A large amount of personnel's operating times are saved, cost of human resources is saved.
In order to solve the above technical problem, the present invention provides a kind of unattended intelligent transformer substation systems, including setting Supervisory control of substation terminal in several substations, the supervisory control of substation terminal pass through collected data on fiber optic network Monitoring center is reached, the monitoring center mutually transmits signal, the substation with client by super five-pointed star Shielded Twisted Pair Monitor terminal includes the hard disk video recorder for connecting audio-video monitoring device, gate inhibition's inspection device and is connect with data processing terminal Environment monitoring device, power plant, safety apparatus and warning device, the audio-video monitoring device also with intelligent video Analysis server connects, and the monitoring center is provided with alarming and managing platform, ensures that the safety of data, data processing terminal will become Monitoring center is integrated and be uploaded to the monitoring informations such as power station environment, Auxiliary Power Unit, realizes substation equipment and operation The centralized management of environmental information improves the intelligent level of monitoring device, provides for monitoring center and accurately and reliably alarm, and and When provide and retain the live evidence of alarm.
Further, gate inhibition's inspection device includes recognition of face device, electric lock, card reader, door sensor and button, is realized more The control of grade permission and the combination of a variety of authorizations.
Further, the environment monitoring device includes that SF6 gases on-line monitoring, temperature monitoring, humidity detection, equipment connect Access point temperature monitoring and water-level detecting, the environment monitoring device link with the warning device, join to environment in monitoring center Amount sends out alarm signal when being more than preset value.
Further, the power plant includes wind turbine, lamps and lanterns, air-conditioning, water pump and dehumidifier, by being arranged indoors Various kinds of sensors, acquire the operating status of power plant, realize automatic, remote control.
Further, the audio-video monitoring device links with the lamps and lanterns, when having monitored abnormal conditions, beats automatically Open corresponding light.
Further, the safety apparatus links with the lamps and lanterns, according to the condition of setting, works as safety apparatus Deng generation alarm signal, corresponding light is automatically opened.
Further, the safety apparatus includes infrared emission, perimeter alarm, fence and vibration optical fiber, more Kind form protection.
Further, the warning device includes smoke alarm, flame detector, sound-light alarm and intelligent lighting, is led to It crosses different warning devices and early warning is carried out to different alerts.
Further, the audio-video monitoring device links with the warning device, once it monitors to violate preset rules Target, trigger the alarm of warning device scene immediately.
The advantageous effect of the unattended intelligent transformer substation system of the present invention compared with prior art is to make full use of manpower Resource ensures equipment stable operation and electric substation's safety, raises labour productivity and equipment operation maintenance level.
Description of the drawings
Fig. 1 is overall structure of the present invention;
Fig. 2 is intelligent video analysis server operating diagram of the present invention.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, a kind of unattended intelligent transformer substation system, including the substation being arranged in several substations supervise Collected data are uploaded to monitoring center, optical fiber transmission speed by control terminal, the supervisory control of substation terminal by fiber optic network Degree is fast, and the monitoring center mutually transmits signal with client by super five-pointed star Shielded Twisted Pair, surpasses five-pointed star Shielded Twisted Pair and passes Defeated signal ensures the safety of data, the supervisory control of substation terminal include the hard disk video recorder for connecting audio-video monitoring device, Gate inhibition's inspection device and the environment monitoring device being connect with data processing terminal, power plant, safety apparatus and alarm Monitoring center is integrated and be uploaded to the monitoring informations such as substation, Auxiliary Power Unit by device, data processing terminal, Audio-video monitoring device is based on the hardware devices such as hard disk video recorder, using extensive centralized monitoring system software as core, executes strong Big picture control function to linking when equipment manipulation, accident treatment, and can realize long-distance video inspection and remotely regard Frequency guiding function.
As shown in Fig. 2, the audio-video monitoring device is also connect with intelligent video analysis server, the audio-video monitoring Device links with the warning device, and the monitoring center is provided with alarming and managing platform, and alarming and managing platform is to intelligent video Analysis server carry out regulation management, the warning message of upload is stored and is classified, intelligent video analysis server according to Default rule handle video camera input video image, pair can with target carry out from motion tracking and early warning, once it is determined that target Preset rules are violated, trigger the alarm of warning device scene immediately, and warning information is uploaded to alarming and managing platform, alarming and managing Platform is popped up after receiving warning message by video, 3 kinds of modes of auditory tone cues+text prompt remind monitoring personnel, monitoring personnel Real-time video browsing can be carried out by audio-video monitoring device, while realize personnel and invading Realtime Alerts and candid photograph, improved The accuracy rate for driving system alarm, reduces the rate of failing to report of monitoring system alarming, while after detecting alert event, in time on It passes alarm field data and is stored in alarming and managing platform, with smaller storage resource come grabbing in real time when preserving alarm generation Figure, greatly improves monitoring management efficiency, information storage efficiency, the live evidence of preservation facilitates verification.
Gate inhibition's inspection device includes recognition of face device, electric lock, card reader, door sensor and button, gate inhibition's inspection dress The safety for ensureing access control system in the form of multistage permission control and the combination of a variety of authorizations is set, when holder's Card Reader When, system is implemented to show card holder photograph and identity archives, is compared by recognition of face, to confirm Card Reader person part, increases The safety of strong gate inhibition.
The environment monitoring device includes SF6 gases on-line monitoring, temperature monitoring, humidity detection, equipment access point temperature Monitoring and water-level detecting, the environment monitoring device link with the warning device, are more than pre- to environment parameter in monitoring center If sending out alarm signal when value, and pass through the automatic troubleshootings of carry out such as wind turbine, water pump in power plant.
The power plant includes wind turbine, lamps and lanterns, air-conditioning, water pump and dehumidifier, by the way that all kinds of biographies indoors are arranged Sensor acquires the operating status of power plant, realizes that automatic, remote control, the audio-video monitoring device join with the lamps and lanterns It is dynamic, when having monitored abnormal conditions, corresponding light is automatically opened, the safety apparatus links with the lamps and lanterns, institute It includes infrared emission, perimeter alarm, fence and vibration optical fiber to state safety apparatus, according to the condition of setting, when infrared To penetrating, the alarm signal of the generations such as perimeter alarm, fence, vibration optical fiber, automatically open corresponding light.
The warning device includes smoke alarm, flame detector, sound-light alarm and intelligent lighting, passes through different reports Alarm device carries out early warning to different alerts.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention It encloses without being limited thereto.Those skilled in the art on the basis of the present invention made by equivalent substitute or transformation, in the present invention Protection domain within.Protection scope of the present invention is subject to claims.

Claims (9)

1. a kind of unattended intelligent transformer substation system, which is characterized in that including the substation's prison being arranged in several substations Control terminal, collected data are uploaded to monitoring center by the supervisory control of substation terminal by fiber optic network, in the monitoring The heart mutually transmits signal with client by super five-pointed star Shielded Twisted Pair, and the supervisory control of substation terminal includes connection audio and video prison Control hard disk video recorder, gate inhibition's inspection device and the environment monitoring device being connect with data processing terminal of device, power plant, Safety apparatus and warning device, the audio-video monitoring device are also connect with intelligent video analysis server, the monitoring It is provided centrally with alarming and managing platform.
2. unattended intelligent transformer substation system as described in claim 1, which is characterized in that gate inhibition's inspection device includes Recognition of face device, electric lock, card reader, door sensor and button.
3. unattended intelligent transformer substation system as described in claim 1, which is characterized in that the environment monitoring device includes SF6 gases on-line monitoring, temperature monitoring, humidity detection, equipment access point temperature monitoring and water-level detecting, the environmental monitoring dress It sets and links with the warning device.
4. unattended intelligent transformer substation system as described in claim 1, which is characterized in that the power plant includes wind Machine, lamps and lanterns, air-conditioning, water pump and dehumidifier.
5. unattended intelligent transformer substation system as claimed in claim 4, which is characterized in that the audio-video monitoring device with The lamps and lanterns linkage.
6. unattended intelligent transformer substation system as claimed in claim 4, which is characterized in that the safety apparatus and institute State lamps and lanterns linkage.
7. unattended intelligent transformer substation system as described in claim 1, which is characterized in that the safety apparatus includes Infrared emission, perimeter alarm, fence and vibration optical fiber.
8. unattended intelligent transformer substation system as described in claim 1, which is characterized in that the warning device includes cigarette sense Detector, flame detector, sound-light alarm and intelligent lighting.
9. unattended intelligent transformer substation system as described in claim 1, which is characterized in that the audio-video monitoring device with The warning device linkage.
CN201810863934.6A 2018-08-01 2018-08-01 Unattended intelligent transformer substation system Withdrawn CN108631447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810863934.6A CN108631447A (en) 2018-08-01 2018-08-01 Unattended intelligent transformer substation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810863934.6A CN108631447A (en) 2018-08-01 2018-08-01 Unattended intelligent transformer substation system

Publications (1)

Publication Number Publication Date
CN108631447A true CN108631447A (en) 2018-10-09

Family

ID=63690067

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810863934.6A Withdrawn CN108631447A (en) 2018-08-01 2018-08-01 Unattended intelligent transformer substation system

Country Status (1)

Country Link
CN (1) CN108631447A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109558822A (en) * 2018-11-22 2019-04-02 杭州光曲智能科技有限公司 A kind of unattended operation transformer station monitoring system based on image recognition
CN109599782A (en) * 2018-12-17 2019-04-09 武汉泰可电气股份有限公司 Intelligent substation management system based on Internet of Things and intelligent recognition
CN109634330A (en) * 2018-12-30 2019-04-16 吴晗 A kind of Unattended substation system based on intelligent control
CN109980781A (en) * 2019-03-26 2019-07-05 惠州学院 A kind of transformer substation intelligent monitoring system
CN110691221A (en) * 2019-10-14 2020-01-14 上海许继电气有限公司 System for realizing intelligent video monitoring for unattended transformer substation
CN110854998A (en) * 2019-10-24 2020-02-28 北京中润惠通科技发展有限公司 Unattended inspection system of substation
CN111179120A (en) * 2020-01-06 2020-05-19 国网上海市电力公司 Monitoring and emergency repair platform for transformer substation
CN111601071A (en) * 2020-04-01 2020-08-28 上海申铁信息工程有限公司 Method and device for linkage of railway station platform protection system and video monitoring system
CN111796550A (en) * 2020-07-16 2020-10-20 广州心蛙科技有限责任公司 5g intelligent control district transformer substation auxiliary system with early warning function
CN112802298A (en) * 2020-12-28 2021-05-14 内蒙古电力(集团)有限责任公司包头供电局 Auxiliary monitoring management system in unattended substation
CN112825439A (en) * 2019-11-20 2021-05-21 中国南方电网有限责任公司超高压输电公司贵阳局 Comprehensive intelligent monitoring system for unattended transformer substation

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109558822A (en) * 2018-11-22 2019-04-02 杭州光曲智能科技有限公司 A kind of unattended operation transformer station monitoring system based on image recognition
CN109599782A (en) * 2018-12-17 2019-04-09 武汉泰可电气股份有限公司 Intelligent substation management system based on Internet of Things and intelligent recognition
CN109634330A (en) * 2018-12-30 2019-04-16 吴晗 A kind of Unattended substation system based on intelligent control
CN109980781A (en) * 2019-03-26 2019-07-05 惠州学院 A kind of transformer substation intelligent monitoring system
CN110691221A (en) * 2019-10-14 2020-01-14 上海许继电气有限公司 System for realizing intelligent video monitoring for unattended transformer substation
CN110854998A (en) * 2019-10-24 2020-02-28 北京中润惠通科技发展有限公司 Unattended inspection system of substation
CN110854998B (en) * 2019-10-24 2021-04-06 北京中润惠通科技发展有限公司 Unattended inspection system of substation
CN112825439A (en) * 2019-11-20 2021-05-21 中国南方电网有限责任公司超高压输电公司贵阳局 Comprehensive intelligent monitoring system for unattended transformer substation
CN111179120A (en) * 2020-01-06 2020-05-19 国网上海市电力公司 Monitoring and emergency repair platform for transformer substation
CN111601071A (en) * 2020-04-01 2020-08-28 上海申铁信息工程有限公司 Method and device for linkage of railway station platform protection system and video monitoring system
CN111796550A (en) * 2020-07-16 2020-10-20 广州心蛙科技有限责任公司 5g intelligent control district transformer substation auxiliary system with early warning function
CN112802298A (en) * 2020-12-28 2021-05-14 内蒙古电力(集团)有限责任公司包头供电局 Auxiliary monitoring management system in unattended substation

Similar Documents

Publication Publication Date Title
CN108631447A (en) Unattended intelligent transformer substation system
CN206894809U (en) Electric power safety operation and O&M intelligent monitoring system
CN105303636B (en) Wireless polling system and inspection management method
CN103488154B (en) A kind of substation operation environment remote comprehensive monitoring system and inter-linked controlling method thereof
CN110798344A (en) Intelligent power distribution operation and maintenance system
CN107991999A (en) Power cable tunnel comprehensive monitoring system and method
CN203520131U (en) Substation operating environment remote integrated monitoring system
CN108335449A (en) A kind of electrical fire interconnected monitoring system based on cloud platform
CN111524306A (en) Centralized monitoring system for power environment of machine room
CN114124953A (en) Power communication wisdom computer lab fortune dimension management and control system
CN103970098B (en) Intelligent substation auxiliary system comprehensive monitoring platform
CN113706817B (en) Transformer substation intelligent safety management method and system based on big data
CN105023403A (en) Linkage control method based on industrial safety emergency command integrated system
CN104699057A (en) Intelligent control system for substation facilities
CN208820537U (en) A kind of box-type substation integrated information monitoring system based on Internet of Things
CN108375962A (en) Offshore boosting station patrols control system
CN105785946A (en) Machine room environment control integrated monitoring platform
CN112634579A (en) Transformer substation security early warning linkage system
CN112233368A (en) Comprehensive security management platform
CN110062051A (en) Exempt from the managing and control system and method for power distribution room and pump house on duty
CN112994230A (en) Environment monitoring system for intelligent substation auxiliary system and use method thereof
CN209842394U (en) Intelligent monitoring system for rail-side machine room of 5T equipment
CN207612125U (en) Electric railway traction supply intelligent auxiliary system
CN211878460U (en) Intelligent comprehensive monitoring system for distribution transformer environment
CN113037842A (en) Remote maintenance system of substation automation system

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
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20181009