WO2019234271A1 - Dispositif de changement statique de prises en charge pour des transformateurs à enroulements de régulation discontinus - Google Patents

Dispositif de changement statique de prises en charge pour des transformateurs à enroulements de régulation discontinus Download PDF

Info

Publication number
WO2019234271A1
WO2019234271A1 PCT/ES2019/070363 ES2019070363W WO2019234271A1 WO 2019234271 A1 WO2019234271 A1 WO 2019234271A1 ES 2019070363 W ES2019070363 W ES 2019070363W WO 2019234271 A1 WO2019234271 A1 WO 2019234271A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
static
voltage
static switches
tap
Prior art date
Application number
PCT/ES2019/070363
Other languages
English (en)
Spanish (es)
Inventor
Antonio GÓMEZ EXPÓSITO
Manuel BARRAGÁN VILLAREJO
Francisco de Paula GARCÍA LÓPEZ
José María MAZA ORTEGA
Original Assignee
Universidad De Sevilla
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 Universidad De Sevilla filed Critical Universidad De Sevilla
Priority to ES19814374T priority Critical patent/ES2964632T3/es
Priority to EP19814374.5A priority patent/EP3780038B1/fr
Publication of WO2019234271A1 publication Critical patent/WO2019234271A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
    • G05F1/16—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices
    • G05F1/20—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers

Definitions

  • the object of the invention is framed in the technical field of electricity, more specifically the proposed invention is applied in the area of alternating current power electrical systems and, particularly, in the activities of generation, transport and distribution of electrical energy .
  • the proposed invention is directed to transformers, specifically to a specific topology of a load tap changer based on static switches for applications that require dynamic voltage regulation, such as:
  • the transformer is one of the key parts of current electrical systems because it allows adapting the voltage levels between the different parts of the electrical system in an efficient and safe way.
  • Most of the transformers in the mains are equipped with tap-changers that, by modifying the number of turns of the primary winding, allow the value of the secondary voltage to be adjusted within a range around the nominal voltage.
  • tap changers there are two technologies of tap changers: vacuum and load.
  • the former can only be operated with the transformer disconnected from the network.
  • the seconds can be operated when the transformer is in operation allowing a dynamic regulation of the secondary voltage before variations of the primary voltage and / or the load.
  • the proposed invention consists of a specific topology of load tap-changer based on static switches for applications that require dynamic voltage regulation, among which are:
  • the current operation of the electrical power systems requires that the voltages of the network nodes remain within the regulatory limits regardless of the state of charge.
  • the transformer with tap changer being one of them.
  • a transformer has several electrically insulated windings that are magnetically coupled so that the relationship between the voltages of the windings, known by the transformation ratio, is a function of their winding ratio.
  • the purpose of the tap changer is to maintain the voltage of one of the windings regardless of the voltage of the other and the state of charge of the transformer.
  • the winding in which the changer is installed is divided into two: main winding and regulation winding.
  • the first contains the bulk of windings of the winding while the second is formed by a set of coils with a number of turns in relation to the main and which are electrically accessible. In this way, depending on the electrical connection selected in the regulation winding, the total number of turns of the winding can be modified and, therefore, the transformer transformation ratio.
  • the process of modifying the number of turns is called switching, there are two basic ways of carrying it out: on load and on empty.
  • the change of the number of turns is carried out with the transformer in service for which an electromechanical switch characterized by being a bulky, complex and expensive device is normally used. Due to these characteristics, the tap-on-load changers are used in applications where it is not possible to interrupt the service to regulate the voltage, for example in high voltage (AT) transformers at medium voltage (MT).
  • AT high voltage
  • MT medium voltage
  • the change of turns is done with the transformer out of service, that is, without load.
  • the vacuum tap changer is a very simple and low-cost device, so it is usually installed in medium voltage (MT) transformers at low voltage (BT).
  • the object of the present invention is directed to a load tap changer based on power electronics with a symmetrical arrangement of static switches, sensors for monitoring and control as well as a passive trigger device that ensures its operation in case of power failures.
  • control signals being applicable to transformers that have at least one regulation winding, in addition to the main windings, electrically discontinuous, that is, open at least at one point.
  • the regulation winding is divided into at least two semi-windings electrically isolated formed by a set of coils whose terminals are electrically accessible.
  • a terminal of a static switch based on a power electronics device is connected to each of the terminals of the regulating semi-windings, which are electrically accessible. There are, therefore, the same number of static switches as accessible terminals of the regulating half-winding and equal to the number of semi-winding regulation coils plus one.
  • the other terminals of the static switches are connected to each other forming at least two common points, one for each of the electrically isolated semi-windings. These common points join together through an electrical connection.
  • the set is completed with a series of voltage and intensity sensors, required for monitoring and control of the device, arranged in specific locations.
  • the intensity measurement is carried out in the electrical connection between the common points mentioned above.
  • a voltage sensor is located in each regulation half-winding between an electrically accessible terminal and the common point.
  • the static switch used in the invention can be formed by two IGBTs in antiseries with their respective diodes in antiparallel, or an IGBT with four diodes or two thyristors in antiparallel. If necessary, a snubber can be included to reduce the overvoltages in the switching instants of the static switches. Said static switches are controlled by the corresponding trip signals calculated by a control system, which determines which is the most appropriate socket at each moment depending on the operating conditions and the setpoints. In the case of multi-phase applications, this control system has the following hierarchical structure:
  • Local controller associated to each of the transformer phases. It is responsible for providing the appropriate trip signals to the static switches depending on the central controller setpoint. Additionally, it measures the operation variables of the changer (voltage, intensity, temperature and / or any other parameter) required by the centralized controller.
  • Centralized controller responsible for determining which is the appropriate regulation socket in each of the phases based on the operation setpoint selected by the user and the different operation variables sent by each of the local controllers.
  • the central controller having all the information of the phases, can determine the most appropriate operating instructions at all times to optimize the overall operation of the application.
  • the communication between local controllers and centralized control is done through optical or wireless means to provide adequate galvanic isolation.
  • local and centralized controllers are embedded within a single control device.
  • a passive trip device is incorporated into one of the static switches associated with each semi-winding so that it is guaranteed that, at all times, even in case of failure of control signals, the circuit is closed.
  • Figures 1 a and 1 b.- Shows a view of respective transformers equipped with electrically discontinuous regulation windings, that is to say with at least one opening point; where in figure 1 a a single-phase transformer or a phase of a three-phase star connection is represented while in figure 1 b a phase of a transformer with the three-phase triangle connection is represented.
  • Figure 2. Shows a topology of an MT / BT tap changer applying the state of the art.
  • Figure 3. Shows a diagram showing the proposed topology of a MT / BT tap changer.
  • FIGS 4a-4c.- show respective diagrams representing (4a) Equivalent scheme of the closed static switch (correct control signals). (4b) Equivalent scheme of the static open switch (control signal failure). (4c) Static switch voltage and intensity in operation with correct control signals and with control signal failure.
  • FIGS 5a-5b They show: (5a) A scheme of components of the passive firing device. (5b) A graph showing the operation of the passive firing device. PREFERRED EMBODIMENT OF THE INVENTION
  • the invention is applicable to transformers equipped with electrically discontinuous regulating windings, that is to say with at least one opening point like those shown in Figure 1.
  • a single-phase transformer or a phase of a three-phase star connection is depicted in Figure 1 a, while a phase of a transformer with the three-phase triangle connection is represented in Figure 1b.
  • Said transformers comprise a main winding (30 in Figure 1 a; 30a and 30b in Figure 1 b) and an electrically discontinuous regulating winding open at a point such that it is divided into an upper semi-winding formed by the coils (32 , 34) and lower semi-winding formed by the coils (36, 38).
  • the terminals of the upper half-winding (42, 43 and 44) and the lower half-winding (45, 46 and 47) are electrically accessible, both being isolated from each other as terminals 44 and 45 are not electrically connected.
  • Figure 3 shows the embodiment of a changer based on static switches object of this invention on the transformer shown in Figure 1 b.
  • the nominal voltage of the main winding (30a, 30b) is Up-Ur while the nominal voltage of the regulating windings (32, 34, 36, 38) is Ur.
  • a first set of static switches (61 a, 62a, 63a) are connected to the accessible terminals of the upper half-winding (42, 43, 44) of the regulating winding.
  • the free terminals of said first set of static switches (61 a, 62a, 63a) in turn are connected to a first common point (48a).
  • a second set of static switches (61 b, 62b, 63b) are connected to the accessible terminals of the lower half-winding (45, 46, 47) of the regulating winding, and their free terminals are connected to a second common point (48b).
  • the common points (48a, 48b) are electrically joined together and the intensity circulating in said electrical junction is measured through the corresponding intensity sensor (90).
  • the voltages of the other switches are easily calculated by applying Kirchhoff's second law and taking into account that the regulation coils are identical to each other. In this way, it is possible to determine the maximum effective voltage to which each switch could be exposed, which is decisive for its dimensioning purposes.
  • the maximum voltages of the static switches are in the range 2Ur (switches (61 a, 63a, 61 b, 63b)) and Ur (switches (62a, 62b)).
  • the maximum current without overload that can circulate through the static switches is the nominal current of the winding, In, the maximum power associated with the changer, calculated as the sum of the power of each of the switches, It is for this specific case: 10Urln.
  • Static changer object of the invention Effective voltages depending on the selected outlet.
  • the proposed invention provides advantages compared to the state of the art of the tap changer presented in Figure 2. Again, it is possible to select five possible primary voltage levels depending on the static switch that closes: (101) closed Up-2Ur ; (103) closed Up-Ur; (105) closed Up; (107) closed Up + Ur; (109) closed Up + 2Ur.
  • the number of static switches (101, 103, 105, 107, 109) in this configuration is equal to the number of regulation coils plus one (2n + 1, five in the configuration shown in Figure 2).
  • Table 2 shows the effective voltages to which the different static switches are subjected depending on the selected socket. As an example, if the socket corresponding to the Up-Ur voltage level is selected, the static switch (103) must be closed, the voltage of said switch being zero.
  • the voltages of the other switches are easily calculated by applying Kirchhoff's second law and taking into account that the regulation coils are identical to each other. In this way, it is possible to determine the maximum effective voltage to which each switch could be exposed in normal operation, which is decisive for its dimensioning purposes.
  • the maximum voltages of the static switches are in the range 4Ur (switches (101) and (109)) and 2Ur (switch (105)).
  • the maximum current without overload that can circulate through the static switches is the nominal current of the winding.
  • the maximum power associated with the changer calculated as sum of the power of each of the static switches (61 a, 62a, 63a, 61 b, 62b, 63b), is for this specific case: 16Urln.
  • Static changer according to the state of the art: Effective voltages depending on the selected outlet.
  • the invention incorporates voltage sensors (80a, 80b) that measure the voltage of static switches that occupy the same relative position in each of the semi-windings, for example and in view of Figure 3 in the static switches (63a, 63b ). In this sense, the voltage measurement could also be located by measuring the voltage of the static switches (61 a, 61 b).
  • the information provided by the sensors (90, 80a, 80b) is measured by a local control unit (70) which, in turn, sends it to the central controller (100).
  • Said central controller (100) receives this information from the local controllers (70) associated with the different phases and determines the most appropriate take for each of them based on the operating parameters and the operating instructions.
  • Communication between the local control unit (70) and the central controller (100) is preferably carried out by means of optical or wireless means (95) to guarantee galvanic isolation of the tap-changer.
  • optical or wireless means 95
  • the object of the invention is complemented by a passive trip device (66a and 66b) for each of the semi-windings.
  • the purpose of said device is to close one of the static switches (61 a, 62a, 63a, 61 b, 62b, 63b) for each of the regulating semi-windings in case of failure of the respective control signals (71 a, 72a, 73a, 71 b, 72b, 73b).
  • the passive trip device (66a, 66b) acts when a certain instantaneous voltage value of the static switches is reached, for which it is essential to take into account the effective voltage values under normal operating conditions shown in the Table 1 .
  • the performance of the device must be higher than the peak value corresponding to the maximum effective values shown in Table 2 plus a certain safety margin that takes into account the possible variations in the network voltage.
  • the physical embodiment of the passive firing device (66a, 66b) is based on the scheme shown in Figure 5a.
  • Said passive trip device (66a, 66b) is formed by a trip circuit (68b) that is fed from a non-linear impedance (67b) whose value is variable depending on the voltage: infinite in case the voltage is lower to a threshold value and zero otherwise.
  • a non-linear impedance 67b
  • the trip signal (72b) from the control system (70) is correct, the voltage at the static switch is zero and the passive trip device has no power, so the trip signal (74b) does not is generated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

La présente invention porte sur un dispositif de changement de prises en charge basé sur des interrupteurs statiques pour des applications qui nécessitent une régulation dynamique de la tension. Le dispositif de changement de l'invention est équipé d'une unité de commande centrale qui détermine la valeur de consigne optimale de fonctionnement en fonction de l'information fournie par les unités de commandes locales associées à chacune des phases. Pour ce faire, les unités de commandes locales sont reliées à une série de capteurs de tension et d'intensité qui déterminent l'état de fonctionnement du dispositif de changement. De plus, ces unités de commande locale actionnent les signaux de commande des interrupteurs statiques pour sélectionner la prise optimale déterminée par le dispositif de commande centrale.
PCT/ES2019/070363 2018-06-06 2019-05-30 Dispositif de changement statique de prises en charge pour des transformateurs à enroulements de régulation discontinus WO2019234271A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES19814374T ES2964632T3 (es) 2018-06-06 2019-05-30 Dispositivo cambiador estático de tomas en carga para transformadores con devanados de regulación discontinuos
EP19814374.5A EP3780038B1 (fr) 2018-06-06 2019-05-30 Dispositif de changement statique de prises en charge pour des transformateurs à enroulements de régulation discontinus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201830549A ES2734601B2 (es) 2018-06-06 2018-06-06 Dispositivo cambiador estatico de tomas en carga para transformadores con devanados de regulacion discontinuos
ESP201830549 2018-06-06

Publications (1)

Publication Number Publication Date
WO2019234271A1 true WO2019234271A1 (fr) 2019-12-12

Family

ID=68763546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2019/070363 WO2019234271A1 (fr) 2018-06-06 2019-05-30 Dispositif de changement statique de prises en charge pour des transformateurs à enroulements de régulation discontinus

Country Status (3)

Country Link
EP (1) EP3780038B1 (fr)
ES (2) ES2734601B2 (fr)
WO (1) WO2019234271A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112670067A (zh) * 2020-11-18 2021-04-16 中国电力科学研究院有限公司 一种对称型真空泡负载平衡的过渡电路装置及控制方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021111181A1 (de) * 2021-04-30 2022-11-03 Infineon Technologies Bipolar Gmbh & Co. Kg Laststufenschaltermodul, Anordnung aus Laststufenschaltermodul und Leistungstransformator und Verfahren zum Betrieb eines Laststufenschaltermoduls
ES2936183B2 (es) 2021-09-14 2023-12-27 Univ Sevilla Interruptor estatico de corriente alterna con rango extendido de intensidad
ES2950896A1 (es) * 2022-03-10 2023-10-16 Ormazabal Corporate Tech A I E Método de determinación de la consigna óptima y de la política de control de un regulador automático de tensión para transformadores con cambiador de tomas eléctricas en carga

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195038A (en) 1961-05-15 1965-07-13 Brentford Electric Ltd Voltage or current regulator apparatus
US3700925A (en) 1971-03-29 1972-10-24 Westinghouse Electric Corp Thyristor tap changer for electrical inductive apparatus
US4220411A (en) 1978-08-14 1980-09-02 The United States Of America As Represented By The Secretary Of The Navy Fiber optic light launching assembly
US5969511A (en) 1995-08-01 1999-10-19 N.V. Eneco Method and device for continuous adjustment and regulation of transformer turns ratio, and transformer provided with such device
WO2006087401A1 (fr) * 2005-02-15 2006-08-24 Universidad De Sevilla Changeur de prises pour transformateurs de moyenne/basse tension

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA112302C2 (uk) * 2010-12-17 2016-08-25 Машіненфабрік Райнхаузен Гмбх Ступеневий перемикач
US10147562B2 (en) * 2014-11-25 2018-12-04 Hai Wang On-load voltage regulation tap switch for transformer and switch control method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195038A (en) 1961-05-15 1965-07-13 Brentford Electric Ltd Voltage or current regulator apparatus
US3700925A (en) 1971-03-29 1972-10-24 Westinghouse Electric Corp Thyristor tap changer for electrical inductive apparatus
US4220411A (en) 1978-08-14 1980-09-02 The United States Of America As Represented By The Secretary Of The Navy Fiber optic light launching assembly
US5969511A (en) 1995-08-01 1999-10-19 N.V. Eneco Method and device for continuous adjustment and regulation of transformer turns ratio, and transformer provided with such device
WO2006087401A1 (fr) * 2005-02-15 2006-08-24 Universidad De Sevilla Changeur de prises pour transformateurs de moyenne/basse tension
ES2274684A1 (es) 2005-02-15 2007-05-16 Universidad De Sevilla Cambiador de tomas para transformadores de media/baja tension.

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
A. BETTANIN, M. COPPO , A. SAVIO, R. TURRI: "Voltage management strategies for low voltage networks supplied through phase-decoupled on-load-tap-changer transformers", 2017 AEIT INTERNATIONAL ANNUAL CONFERENCE, 22 September 2017 (2017-09-22), Cagliari, Italy, pages 1 - 6, XP033280553 *
EGOITZ MARTINEZ; IOSU FERNANDEZ; JOSE MARIA CANALES: "Thyristor based solid state tap changer for distribution transformers", 2013 IEEE 11TH INTERNATIONAL WORKSHOP OF ELECTRONICS, CONTROL, MEASUREMENT, SIGNALS AND THEIR APPLICATION TO MECHATRONICS, 26 June 2013 (2013-06-26), Toulouse, France, pages 1 - 5, XP032519406, DOI: 10.1109/ECMSM.2013.6648942 *
See also references of EP3780038A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112670067A (zh) * 2020-11-18 2021-04-16 中国电力科学研究院有限公司 一种对称型真空泡负载平衡的过渡电路装置及控制方法
CN112670067B (zh) * 2020-11-18 2022-07-01 中国电力科学研究院有限公司 一种对称型真空泡负载平衡的过渡电路装置及控制方法

Also Published As

Publication number Publication date
EP3780038B1 (fr) 2023-08-16
EP3780038A4 (fr) 2022-01-26
EP3780038C0 (fr) 2023-08-16
ES2734601B2 (es) 2020-07-08
EP3780038A1 (fr) 2021-02-17
ES2964632T3 (es) 2024-04-08
ES2734601A1 (es) 2019-12-10

Similar Documents

Publication Publication Date Title
ES2964632T3 (es) Dispositivo cambiador estático de tomas en carga para transformadores con devanados de regulación discontinuos
ES2933566T3 (es) Sistema de red eléctrica
Tao et al. ITER coil power supply and distribution system
BR112018011543B1 (pt) Módulo de injeção por impedância ativa para balanceamento de linha dinâmica de uma linha de transmissão de alta tensão distribuída, melhoria para no módulo e método para fornecer balanceamento de linha dinâmica e distribuída de uma linha de transmissão de alta tensão
TW201444265A (zh) 旁路串接電池轉換器
JP2013198232A (ja) 三相不平衡抑制システム
BRPI0822822A2 (pt) Instalação tendo um circuito intermediário de voltagem cc e conversores autocomutados
BR102015020363B1 (pt) Sistema elétrico e método de operação de um sistema elétrico
US8207716B2 (en) Useful improvements in the art of 3-phase electronic tap changer commutation device
Zito et al. Design and realization of JT-60SA fast plasma position control coils power supplies
KR20160040415A (ko) 콘덴서 개폐용 지능형 스위칭 모듈
US9287764B2 (en) Energy delivery system and method for a gate drive unit controlling a thyristor-based valve
US7737667B2 (en) 3-phase electronic tap changer commutation and device
KR101568154B1 (ko) 콘덴서 개폐용 지능형 스위칭 모듈
Zheng et al. A DC controller for continuous variable series reactors (CVSRs)
US20200028359A1 (en) Ac switching arrangement
US11476672B2 (en) System and method for stabilizing an alternating voltage grid
CN104272405A (zh) 地区电网变压器
Xu et al. Modeling and control of extended multiterminal high voltage direct current systems with three‐wire bipole structure
US20210359617A1 (en) Electrical assembly
CN220440383U (zh) 用于控制交流电网中的潮流的设备
WO2020038704A1 (fr) Valve de commutation
KR102655598B1 (ko) 지상 무효 전력 공급 장치 및 이의 온도 보정을 제어하기 위한 방법
JP2009278813A (ja) 瞬時電圧低下補償装置
Lakdawala et al. A Review on Load Sharing of Transformer

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19814374

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019814374

Country of ref document: EP

Effective date: 20201112

NENP Non-entry into the national phase

Ref country code: DE