WO2017101238A1 - 一种保证智能变电站保护跳闸可靠性的装置和方法 - Google Patents
一种保证智能变电站保护跳闸可靠性的装置和方法 Download PDFInfo
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- WO2017101238A1 WO2017101238A1 PCT/CN2016/079222 CN2016079222W WO2017101238A1 WO 2017101238 A1 WO2017101238 A1 WO 2017101238A1 CN 2016079222 W CN2016079222 W CN 2016079222W WO 2017101238 A1 WO2017101238 A1 WO 2017101238A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1044—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices with specific ECC/EDC distribution
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
- G06F9/3877—Concurrent instruction execution, e.g. pipeline, look ahead using a slave processor, e.g. coprocessor
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- 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
- H02J13/00016—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 a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Definitions
- the invention relates to a device and a method for ensuring the reliability of a smart substation protection trip.
- the digital substation is the development direction of the current substation automation system, especially the promulgation of the international standard (IEC61850) of the substation communication network and system, which provides a standard specification for the construction of digital substation, which greatly promotes the development of digital substation application construction.
- IEC61850 international standard
- Ethernet becomes the most important communication medium.
- the communication network replaces the secondary cable, and the AC module and control module of the traditional protection and control device are eliminated. All the information is transmitted through the process layer network, and the substation is reduced for purchase.
- the cost of secondary cable and cable laying also greatly simplifies the workload of conventional substations for secondary wiring.
- the trip protection error of the relay protection device is realized by the start-up plus protection logic.
- the starting condition and the operating condition of the device are different, and the starting conditions are relatively easy to be satisfied. For example, the voltage and current fluctuations will cause the protection to start. It will not be exported to trip the circuit breaker; the conditions of the protection action are strict.
- the device will start after the device starts up and meets the protection action logic condition, and the outlet trips the circuit breaker.
- the relay circuit is blocked to ensure that the device cannot operate the circuit breaker in any unactivated state.
- the transmission of switching and trip signals is implemented by the Goose service in the IEC61850 standard, which is a hard-wired network data communication method that replaces traditional intelligent electronic devices.
- the measurement and control and protection device sends a jump command to the intelligent operation box through Goose, and the intelligent operation box performs the switching of the switch according to the received command.
- the digital substation protection device there is still logic for protection and startup, but eventually it will jump through Ethernet packets after satisfying the software logic.
- the gate message is sent.
- digital substation protection devices With the increasing requirements for intelligence, information, and digitization, digital substation protection devices use a large number of integrated circuit devices, they bear the core functions of the system, but as the hardware platform becomes more complex and larger, The usage of integrated devices will increase, and the risk of abnormal operation of the protection device due to some hardware failures will become higher and higher. The failure of the common hardware on the data processing link will cause the protection device to malfunction.
- the present invention provides an apparatus and method for ensuring the reliability of intelligent substation protection tripping, adopting dual FPGA and dual CPU architecture, and improving the anti-missing capability of the protection device through the data link redundancy check mode, in the hardware device.
- failures such as single event interference (SEU)
- SEU single event interference
- An apparatus for ensuring reliability of a smart substation protection trip comprising: a connected main CPU and a sub CPU, a connected main FPGA and a sub-FPGA, wherein the main FPGA and the sub-FPGA are connected to a physical layer of the protection device, Both the primary CPU and the secondary CPU are associated with the status monitoring data output of the protected device.
- the main CPU sends the processing result to the main FPGA, and the sub CPU sends the processing result to the sub-FPGA.
- the sub-FPGA receives the information sent by the sub-CPU and synchronizes the current information with the main FPGA.
- the main FPGA compares the current trip information obtained from the main CPU with the current trip information obtained from the sub-FPGA. If they are consistent, the main FPGA sends the information received from the main CPU. To the protection device, otherwise, the information received from the main CPU is discarded.
- Step 1 The main CPU and the sub CPU respectively collect state monitoring data of the protected device, perform protection logic judgment according to the sampled value, and send the result of the protection action to the corresponding FPGA, wherein the main CPU transmits the trip message to the main
- the FPGA calculates the CRC corresponding to the acquired data and transmits it to the main FPGA; the sub CPU transmits the trip state to the sub-FPGA;
- Step 2 The primary FPGA and the secondary FPGA perform preprocessing on the received data, wherein the secondary FPGA synchronizes the current information with the primary FPGA; the primary FPGA parses the information received from the primary CPU: if the information does not include the trip information, then the primary The FPGA directly attaches the CRC to the physical layer received from the main CPU to the physical layer of the protection device; if the information includes the trip information, the primary FPGA obtains the current trip information obtained from the main CPU and the current trip information obtained from the secondary FPGA. For consistency comparison, if they are consistent, the primary FPGA directly sends the CRC to the physical layer of the protection device from the tail of the information received from the primary CPU. Otherwise, the information received from the primary CPU is discarded.
- the hardware device fails, any processing unit will get the wrong trip result, and eventually the trip start information detected by the dual FPGA will be inconsistent, and the trip message will be forbidden to exit, thus abnormal.
- the effect is controlled within the device.
- the device anti-missing capability can be significantly enhanced, and the reliability and stability of the system can be improved.
- FIG. 1 is a structural block diagram of an apparatus for ensuring reliability of a smart substation protection trip
- FIG. 2 is an information flow diagram of a method for ensuring the reliability of intelligent substation protection tripping according to the present invention.
- a device for ensuring the reliability of the intelligent substation protection trip comprising a connected main CPU and a sub CPU, a connected main FPGA and a sub-FPGA, and the main FPGA and the sub-FPGA are both physically connected to the protection device (
- the PHY is connected, and both the main CPU and the sub CPU are connected to the status monitoring data output of the protected device.
- the hardware architecture adopts dual CPU plus dual FPGA redundancy architecture.
- the FPGA acts as a coprocessor for network message processing, and the dual CPU receives the same measurement data as the basis for protection logic judgment.
- the device acts as a protection device supporting the IEC61850 protocol, which monitors the measurement status of the protected device, including switching quantity, voltage, current, phase, etc., and when detecting the failure of the protected device, sends a Goose message through the GOOSE service to issue a trip command. Go to the intelligent operation box and cut off the connection between the protected equipment and the primary system.
- the main CPU sends the processing result to the primary FPGA, and the secondary CPU sends the processing result to the secondary FPGA.
- the secondary FPGA receives the information sent by the secondary CPU and synchronizes the current information with the primary FPGA.
- the main FPGA compares the current trip information obtained from the main CPU with the current trip information obtained from the sub-FPGA. If they are consistent, the main FPGA sends the information received from the main CPU. To the protection device, otherwise, the information received from the main CPU is discarded.
- the primary FPGA and the secondary FPGA perform one-way communication, and the secondary FPGA sends the message to the primary FPGA in a framing manner and periodically.
- the communication between the primary and secondary FPGAs generally adopts a high-speed communication interface, and uses framing to communicate and periodically transmit.
- the physical interface can be any standard interface such as MII, EPPI, SPI, PCIE, RGMII, for example, RGMII (Reduced Gigabit Media Independent) Interface: Simplified Gigabit Media Independent Interface)
- the interface sends, the data bandwidth is 1Gbps, and all data is less than 1us.
- Two-way communication between the main FPGA and the physical layer chip of the protection device such as S3MII bidirectional communication interface, one-way communication between the sub-FPGA and the physical layer chip of the protection device, such as S3MII communication interface, physical layer of the secondary FPGA receiving protection device The message sent.
- Ethernet message link layer CRC Cyclic Redundancy Check Code
- FPGA Fibre Channel Control Coding
- the CRC is calculated by the main CPU and then sent through the FPGA. Specifically, when the main CPU sends a message to the main FPGA, the CRC corresponding to the message is simultaneously sent, and the main FPGA sends the process to the Ethernet message.
- the CRC is sent directly at the end of the frame, and the CRC is no longer calculated by itself and the main FPGA does not change any message content.
- the main FPGA is only responsible for deciding whether to send or not, and can not change any message content.
- the content of the message changes, and the receiving side cannot receive the correct message, ensuring that the protection device does not malfunction. ,can have Effectiveness guarantees data integrity.
- the main FPGA can determine the type of the packets to be sent by parsing the packet format. Sexual verification. If the message does not contain the trip information (that is, the ordinary message), it does not need to be directly sent out by the consistency check.
- the link trip information list synchronized with the secondary FPGA needs to be compared, when the data of the dual FPGA is simultaneously When the link is allowed to trip, the local frame packet can be sent through the Ethernet. Otherwise, the frame data is discarded.
- the format of the trip information supports multiple LD devices (Laser disc), and in this example, 16 different trip start signal states are supported.
- the frame header, frame tail, and check are added, and the specific value of the trip start signal is encoded to ensure that the code value is as irregular as possible, preventing 1 bit misalignment and misjudgment after the overall shift.
- a method for ensuring the reliability of the intelligent substation protection trip includes the following steps:
- Step 1 The main CPU and the sub CPU respectively collect state monitoring data of the protected device, perform protection logic judgment according to the sampled value, and send the result of the protection action to the corresponding FPGA, wherein the main CPU transmits the trip message to the main
- the FPGA calculates the CRC corresponding to the acquired data and transmits it to the main FPGA; the sub CPU transmits the trip state to the sub-FPGA;
- Step 2 The primary FPGA and the secondary FPGA perform preprocessing on the received data, wherein the secondary FPGA synchronizes the current information with the primary FPGA; the primary FPGA parses the information received from the primary CPU: if the information does not include the trip information, then the primary The FPGA directly attaches the CRC to the physical layer received from the main CPU to the physical layer of the protection device; if the information includes the trip information, the primary FPGA obtains the current trip information obtained from the main CPU and the current trip information obtained from the secondary FPGA. Consistency comparison, if consistent, the main FPGA The CRC is directly attached to the physical layer received from the main CPU to the physical layer of the protection device, otherwise, the information received from the main CPU is discarded.
- the hardware device fails. Any processing unit that obtains an incorrect trip result will eventually cause the trip start information detected by the dual FPGA to be inconsistent, and the trip message will be prohibited from being exported, thereby controlling the abnormal effect in the device.
- the device anti-missing capability can be significantly enhanced, and the reliability and stability of the system can be improved.
Abstract
Description
Claims (6)
- 一种保证智能变电站保护跳闸可靠性的装置,其特征在于,包括相连的主CPU和副CPU、相连的主FPGA和副FPGA,所述主FPGA和副FPGA均与保护装置的物理层相连,所述主CPU和副CPU均与被保护设备的状态监视数据输出端相连:其中,主CPU将处理结果发送给主FPGA,副CPU将处理结果发送给副FPGA,副FPGA接收到副CPU发送的信息后向主FPGA同步当前的信息;当主FPGA接收到跳闸信息时,则主FPGA对从主CPU获得的当前的跳闸信息与从副FPGA获得的当前的跳闸信息进行一致性比较,若一致,则主FPGA将从主CPU接收的信息发送至保护装置,否则,丢弃从主CPU接收的信息。
- 根据权利要求1所述的一种保证智能变电站保护跳闸可靠性的装置,其特征在于,主FPGA和副FPGA之间进行单向通信,副FPGA采用成帧方式、周期的向主FPGA发送消息。
- 根据权利要求2所述的一种保证智能变电站保护跳闸可靠性的装置,其特征在于,主FPGA和保护装置的物理层芯片之间进行双向通信,副FPGA和保护装置的物理层芯片之间进行单向通信,副FPGA接收保护装置的物理层发送的消息。
- 根据权利要求1所述的一种保证智能变电站保护跳闸可靠性的装置,其特征在于,主CPU在向主FPGA发送报文时,同时发送报文对应的CRC,主FPGA在发送过程以太网报文时将此CRC直接附在帧尾发出,不再自行计算CRC且主FPGA不改变任何报文内容。
- 根据权利要求4所述的一种保证智能变电站保护跳闸可靠性的装置,其特征 在于,主FPGA接收主CPU发送的报文后,解析报文格式判断是否包含跳闸信息,若不包含跳闸信息则无需一致性校验直接发送出去。
- 一种保证智能变电站保护跳闸可靠性的方法,其特征在于,具体包括如下步骤:步骤1、主CPU和副CPU分别采集被保护设备的状态监视数据,根据采样值进行保护逻辑判断,并将保护动作的结果发送给各自对应的FPGA,其中,主CPU将跳闸报文传送至主FPGA,同时计算采集数据对应的CRC并传送至主FPGA;副CPU将跳闸状态传送至副FPGA;步骤2、主FPGA和副FPGA对接收到的数据进行预处理,其中,副FPGA向主FPGA同步当前的信息;主FPGA对从主CPU接收的信息进行解析:若信息不包含跳闸信息,则主FPGA直接将CRC附在从主CPU接收的信息尾部发送至保护装置的物理层;若信息包含跳闸信息,则主FPGA对从主CPU获得的当前的跳闸信息与从副FPGA获得的当前的跳闸信息进行一致性比较,若一致,则主FPGA直接将CRC附在从主CPU接收的信息尾部发送至保护装置的物理层,否则,丢弃从主CPU接收的信息。
Priority Applications (6)
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GB1811082.5A GB2561129B (en) | 2015-12-16 | 2016-04-14 | Apparatus and method for ensuring reliability of protection trip of intelligent substation |
MYPI2018000951A MY197033A (en) | 2015-12-16 | 2016-04-14 | Apparatus and method for ensuring reliability of protection trip of intelligent substation |
BR112018012323-4A BR112018012323B1 (pt) | 2015-12-16 | 2016-04-14 | Aparelho e método para assegurar confiabilidade de disparo de proteção de subestação inteligente |
US16/062,635 US10637287B2 (en) | 2015-12-16 | 2016-04-14 | Apparatus and method for ensuring reliability of trip protection of intelligent substation |
RU2018124354A RU2690175C1 (ru) | 2015-12-16 | 2016-04-14 | Устройство и способ обеспечения надежности защитного отключения интеллектуальной подстанции |
AU2016370128A AU2016370128B2 (en) | 2015-12-16 | 2016-04-14 | Apparatus and method for ensuring reliability of protection trip of intelligent substation |
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CN201510945548.8 | 2015-12-16 | ||
CN201510945548.8A CN105429094B (zh) | 2015-12-16 | 2015-12-16 | 一种保证智能变电站保护跳闸可靠性的装置和方法 |
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CN (1) | CN105429094B (zh) |
AU (1) | AU2016370128B2 (zh) |
BR (1) | BR112018012323B1 (zh) |
GB (1) | GB2561129B (zh) |
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AU2016370128B2 (en) | 2019-06-20 |
GB2561129B (en) | 2021-11-17 |
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RU2690175C1 (ru) | 2019-05-31 |
MY197033A (en) | 2023-05-22 |
BR112018012323A2 (zh) | 2018-12-04 |
CN105429094B (zh) | 2018-02-16 |
AU2016370128A1 (en) | 2018-07-19 |
GB201811082D0 (en) | 2018-08-22 |
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US20190190315A1 (en) | 2019-06-20 |
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