WO2015028062A1 - Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé - Google Patents

Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé Download PDF

Info

Publication number
WO2015028062A1
WO2015028062A1 PCT/EP2013/067889 EP2013067889W WO2015028062A1 WO 2015028062 A1 WO2015028062 A1 WO 2015028062A1 EP 2013067889 W EP2013067889 W EP 2013067889W WO 2015028062 A1 WO2015028062 A1 WO 2015028062A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
differential protection
differential
value
jump
Prior art date
Application number
PCT/EP2013/067889
Other languages
German (de)
English (en)
Inventor
Norbert Schuster
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2013/067889 priority Critical patent/WO2015028062A1/fr
Publication of WO2015028062A1 publication Critical patent/WO2015028062A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • H02H3/30—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
    • H02H3/305—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel involving current comparison
    • 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
    • H02H1/0084—Details of emergency protective circuit arrangements concerning transmission of signals by means of pilot wires or a telephone network; watching of these wires
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements

Definitions

  • the invention also relates to a corresponding electrical differential protection device for carrying out a Diffe ⁇ rentialschutzbacters.
  • Differential protection devices are used to monitor various primary components of electrical power supply networks, at ⁇ game as pipes, cables, bus bars and transformers.
  • the current flowing to the current measuring point is detected at at least two different measuring points ⁇ union of monitored primary component and the differential protection unit supplied.
  • the differential protection device forms by sign-correct addition of the current measured values differential current values, which are used to assess the Radiosituati ⁇ on the monitored primary component.
  • the difference current values lie in a range close to zero, since, in simplified terms, the current flowing into the component flows completely out of it again. However, resulting differential current values below a zero threshold over ⁇ , so let this operating condition to a faulty loading, for example, an internal short circuit, close.
  • the present fault current must be interrupted by opening of the primary component limiting switching devices, such as circuit breakers. For this generates the Differential protection device a corresponding error signal that causes the switching device to open their switch contacts.
  • the current measured values can be transmitted as analog or digital measured values over a comparatively short connection to a differential protection device.
  • differential protection devices are known in which the current measured values are transmitted in the form of analog current signals via elec ⁇ tric connection lines to a differential protection device.
  • the formation of the differential current value takes place via a current measuring transducer to which the current measured values are supplied in a suitable form.
  • the local and the received measured values must be timed in such a way that the measured values acquired at the same time are compared with each other. For example, if the respective transmission time of the measured values between the individual differential ⁇ protection devices is known, the respective time of data acquisition by the difference between the reception timing of the measurement data in the local Differentialschutzge can advises ⁇ and the known transmission time can be determined.
  • a remedy could be provided, for example, by synchronizing the internal timers of the differential protection devices with one another via an external timer system, for example by means of the time signal contained in the GPS signal. For this, however, special receiving systems, such as GPS receiver, in the differential protection devices are necessary, which have an increasing effect on the price of the device.
  • Another possibility is to carry out a rough plausibility check as to whether the expected transmission time matches the time of reception of the respective measured values. For example, if measurement values received significantly delay or early ge ⁇ geninate the expected time, it may rentialschutz mar to a disturbance of the temporal synchronization of the individual differential closed and the threshold value for
  • the invention has for its object to provide a possible kos ⁇ ten monte way with which a differential protection method can be performed as reliably as possible even during the transmission of current readings over relatively long distances.
  • an error signal can be only be produced with high reliabil ⁇ stechnik when a threshold value is exceeded by the differential current value is in fact due to an error in the monitored primary component, while an induced solely by erroneous time measurement value approximation Threshold exceeded does not result in the delivery of an error signal.
  • the method according to the invention can be used particularly advantageously if the current measured values detected at the different measuring points are transmitted in the form of data telegrams via a communication network.
  • the communication network may be an IP-based communication network configured in any configuration.
  • the data ⁇ legramme be routed within the communication network over several network components, such as routers, switches or bridges, differences in transmission times may occur.
  • the difference current value can be compared for example with a ⁇ Pa as parameters fixed predetermined threshold. However, it is considered to be particularly advantageous if, to check whether the difference current value is the predetermined
  • Exceeds the threshold also stabilizing values are formed from the current measured values of a ⁇ individual measuring points and is checked as part of a trigger area determining whether an image formed by reference to a differential current value and a respective associated stabilization value measurement-value pair in a predetermined tripping range, and detected an exceeding of the threshold value when the measured value pair is within the tripping range.
  • a further advantageous embodiment of the invention shown SEN method provides that for checking whether the profile of the measured current values includes a jump on ⁇ at a measuring point, the difference between an actual measured current value and a an integer number N of periods earlier detected current measured value is formed, and the presence of a jump in the current profile is detected when this difference exceeds a pre ⁇ given jump threshold.
  • the parameter N may assume the value 2, in which case a jump would be detected if the difference ⁇ from the current current measurement value I (t) and the current measurement value I (t-2T) previously recorded two periods ago exceeds the jump threshold value :
  • the jump threshold S Sp tion for example, can be set in depen ⁇ dependence of the approach for evaluating the differential current value ⁇ drawn threshold S D iff, beispielswei ⁇ se can apply the following relationship for the jump threshold S Sp tion:
  • a warning signal is generated in the event that a threshold border differ- ence current value, but not a jump in the current profile is present ⁇ .
  • This warning signal can, for example, cause the generation of a warning message which causes the operator of the differential protection device to encounter problems with the transmission time of the differential protection device
  • the warning signal can also be used, for example, to cause an automatic time alignment of all differential protection devices with a master time signal to restore a ge ⁇ exact time synchronization of the individual differential protection devices with each other.
  • a differential ⁇ apparatus for generating an error signal indicative of a Def ⁇ ler in an electrical power supply network, Ge dissolves
  • said differential protection device is arranged to at a measuring point of a primary component of the electrical ⁇ 's power supply network current values detect, with their own current measuring values and the current measurement values at least one further at another measuring point of the primary märkomponente disposed differential protection device by sign-adding a differential current value to bil ⁇ , and to generate the error signal when the differential current exceeds a predetermined threshold value
  • the differential protection device is also set up to receive the current measured values detected by the at least one further differential protection device, to check whether the course of the own current measured values or the course the current measured values of the at least one further differential protection device has a jump on ⁇ , and only then to form the error signal when a ⁇ hand, the differential current value exceeds the predetermined threshold value and on the other hand, at least one of the characteristics of the current measuring values comprising a jump
  • the Diffe ⁇ rentialschutz réelle invention is also set up to carry out any embodiment of the method according to the invention, so that everything can be obtained tialtik réelle to the process is said also to the differentiation.
  • Figure 1 is a schematic view of one of two
  • Differential protection devices monitored Power supply line of an electrical power supply network
  • FIG. 1 shows a part 10 of an electrical energy supply network (not further described in the following).
  • a primary component 11 is arranged, which may be, for example, a three-phase electrical free ⁇ line of the electrical energy supply network.
  • the primary component 11 is monitored at its first end IIa means of a first differential protection device 12a and ih ⁇ rem second end IIb means of a second differential protection device 12b.
  • first current wall ⁇ learning 14a at a first measuring point at the first end IIa of the primary component 11
  • second current transformers 15a, 15b and 15c at a second measuring point at the second end IIb of the primary component 11 current signals recorded.
  • Digital current measurement values are generated from the analo ⁇ gen current signals.
  • the measured current values can be embodied, for example, as current- indicator measured values which indicate an indication of the amplitude and phase angle of the current signal at the time of detection.
  • the determination of digital current measured values can be done either in the
  • differential protection devices 12a, 12b are connected to one another by a communication connection 16, which is indicated only schematically in FIG. 1, and may be, for example, an IP-based communication network. However, any other communication link of any desired type for connecting the differential protection devices can 12a and 12b are turned ⁇ sets.
  • the separate power measurements are made available, that is, it can in each differential protection device 12a and 12b, respectively for each stage 13a, 13b, 13c of the protected object 11 depending ⁇ wells pairs of Both ends IIa and IIb recorded current readings are formed.
  • measured current values from both ends of IIa and IIb of the primary component 11 can be in one or differential ⁇ arresters both 12a and 12b by means of a data processing ⁇ means a difference between the amounts of current values for each phase (or a correct sign sum ) are formed as difference ⁇ current value and compared with a threshold.
  • the differential protection devices 12a and 12b via control lines 17a, 17b from a corresponding Aus ⁇ release signal to phase-selectively switchable power switches 18 and 19, whereby the corresponding phase-related Leis ⁇ tion switch 18a, 18b, 18c or 19a, 19b, 19c is caused to open its switch contacts and the affected by the error phase 13a, 13b, 13c separated from the rest of Energyversor ⁇ supply network.
  • phase 13b Is, for example, on the phase 13b, a ground fault is present, detect the differential protection devices 12a and 12b this Toggle handle of each threshold exceeded Diffe ⁇ rence current value and provide trigger signals to the phase claim related ⁇ NEN power switch 18b and 19b, respectively from, the phase 13b of the Separate primary component 11 from the power grid.
  • a three-phase primary component 11 is shown with only two ends IIa or IIb of Figure 1, which he ⁇ find new method can be used with several branches, also at any single or multiphase primary components with two or more ends, such as electrical bus bars.
  • Figure 2 shows a part 20 of an electrical power supply system with a Primärkompo ⁇ component in the form of a bus bar 21 with a branch 21 in a schematic view. For better clarity has been dispensed with the presentation of further outgoing from the busbar 21 branches. In addition, a single-phase representation has been chosen for the sake of simplicity; however, the bus bar 21 itself may have any number of phase conductors (eg, three).
  • the busbar 21 has in each case a measuring point 22a, 22b, 22c in the region of its ends and is delimited at each end by a respective power switch 23a, 23b, 23c.
  • secondary currents are detected with only schematically indicated current transformers and differential protection devices 24a, 24b, 24c supplied. These detect the secondary currents in the form of current measured values and use these current measured values to form a differential current value and possibly also a stabilization value.
  • the differential protection devices 24a-c ⁇ average the own current measured values via a communication link 25, which may be exemplified by a communications network with a ring structure, to the respective other Differentialschutzgerä ⁇ te.
  • the differential protection devices communicate with the communication link 25 via network components 26a, 26b and 26c, which may, for example, be network switches.
  • the measured current values received by the respective differential protection devices are added to the own current measured values used to form the difference current value and possibly a stabilization value.
  • one or more of the differential protection devices 24a-c makes a decision as to whether or not there is an error with respect to the busbar 21 and, if necessary, generates an error signal.
  • a local measured current value I A ⁇ be placed riding.
  • a local current reading is one such
  • Such current measured values I B and I c are provided which have been recorded by differential measuring devices arranged at remote measuring points and have been transmitted to the local differential protection device.
  • the local measured current value I A and the current measurement values ⁇ I B and I c can be determined, for example like in the form of Stromzei-.
  • a differential current value Ion f is calculated from the own current measured value I A and the received associated current measured values I B and I c of the other differential protection devices by sign-correct addition and transmitted to block 33.
  • Threshold or a dynamically adjusted threshold can be derived, for example, based on the position of a measured value pair formed from differential current and stabilizing current in a triggering diagram. If it is determined a threshold violation in block 33, ie the difference exceeds ⁇ current value Ioi ff the threshold value S D i ff, a entspre ⁇ and fair output signal is supplied to one input of an AND gate 34th
  • the provided in block 30a measured current value I A is white ⁇ terhin used to the course of the local power measurement ⁇ values with respect to a possible current jump to ban ⁇ chen.
  • the measured current value I A is also fed to a block 35, which executes a jump detector.
  • jump indicators J B and J c of the other differential protection devices are determined, transmitted to the local differential protection device and provided there in blocks 38a and 38b.
  • the jump indicators J B and J c of the other differential protection devices are supplied to the other inputs of the OR gate 36.
  • the AND gate 34 generates an output signal in the form of an error signal F indicating an error with respect to the primary component, if both the difference current value I onf exceeds the threshold value S D iff at the same time and a jump in the course of the at least one measurement point of the primary component Current measured values recognized wor ⁇ is.
  • a warning signal is generated.
  • This warning signal can beispielswei ⁇ se cause the generation of a warning message, the transfer time the operator of the differential protection device to problems with the excess of the current measurement values and / or indicative of an inaccurate time synchronization of the individual differential protection devices, making this appropriate maintenance procedures can hit ⁇ .
  • the warning signal for example, also there are ⁇ to use, start an automatic time synchronization of all differential protection devices with a master clock signal to ver ⁇ to restore an exact time synchronization of the individual differential protection devices together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un procédé de protection différentielle, servant à générer un signal de défaut qui indique un défaut concernant un composant primaire (11, 21) d'un réseau d'alimentation en énergie électrique, selon lequel on acquiert des mesures d'intensité respectives en au moins deux points de mesure (11a‑b, 22a‑c) distincts du composant primaire (11, 21) du réseau d'alimentation en énergie électrique; à partir de ces mesures d'intensité, on forme par addition, en respectant les signes, une valeur d'intensité différentielle; et on génère le signal de défaut lorsque cette valeur d'intensité différentielle dépasse une valeur seuil prédéfinie. Selon l'invention, pour pouvoir mettre en œuvre de la manière la plus économique et la plus fiable possible un procédé de protection différentielle, y compris lorsque les mesures d'intensité sont transmises sur des distances relativement longues, on vérifie en plus pour chaque point de mesure (11a‑b, 22a‑c) si la courbe des mesures d'intensité respectivement acquises en ce point présente une discontinuité et on forme le signal de défaut uniquement lorsque d'une part la valeur d'intensité différentielle dépasse la valeur seuil prédéfinie et que d'autre part la courbe des mesures d'intensité présente une discontinuité en au moins un des points de mesure (11a‑b, 22a‑c). L'invention concerne également un appareil de protection différentielle correspondant.
PCT/EP2013/067889 2013-08-29 2013-08-29 Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé WO2015028062A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/067889 WO2015028062A1 (fr) 2013-08-29 2013-08-29 Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/067889 WO2015028062A1 (fr) 2013-08-29 2013-08-29 Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé

Publications (1)

Publication Number Publication Date
WO2015028062A1 true WO2015028062A1 (fr) 2015-03-05

Family

ID=49085025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/067889 WO2015028062A1 (fr) 2013-08-29 2013-08-29 Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé

Country Status (1)

Country Link
WO (1) WO2015028062A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105162092A (zh) * 2015-08-27 2015-12-16 南京南瑞继保电气有限公司 远方跳闸保护故障就地判别方法
EP3300199A1 (fr) 2016-09-22 2018-03-28 Siemens Aktiengesellschaft Procédé et dispositif destinés à contrôler un disjoncteur pour un réseau d'alimentation en énergie électrique lors du passage à zéro du courant
WO2019120517A1 (fr) * 2017-12-20 2019-06-27 Abb Schweiz Ag Sélection de phase utilisant des mesures multiterminal d'une ligne de transmission
CN110601129A (zh) * 2019-09-05 2019-12-20 深圳供电局有限公司 一种电网输电线路零序保护整定值现场校验系统及方法
CN110646687A (zh) * 2019-09-05 2020-01-03 深圳供电局有限公司 一种电网输电线路的距离保护整定值现场校验系统及方法
CN110676802A (zh) * 2019-09-05 2020-01-10 深圳供电局有限公司 一种光纤电流差动保护整定值现场校验系统及方法
CN114126028A (zh) * 2020-08-28 2022-03-01 宸芯科技有限公司 一种差动保护方法、装置、通信单元和存储介质
CN114126028B (zh) * 2020-08-28 2024-06-11 宸芯科技股份有限公司 一种差动保护方法、装置、通信单元和存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339931A1 (de) 1973-08-03 1975-02-20 Siemens Ag Differentialschutzeinrichtung
EP0384306A1 (fr) * 1989-02-22 1990-08-29 Licentia Patent-Verwaltungs-GmbH Procédé pour générer des signaux de déclenchement pour interrupteurslors de courts-circuits dans des barres omnibus et/ou des sections de barres omnibus
EP1071961B1 (fr) 1998-04-17 2002-07-31 Siemens Aktiengesellschaft Dispositif, procede et installation de mesure de courant servant a mesurer un courant dans un conducteur
DE20220276U1 (de) * 2002-02-25 2003-06-18 Schulze Wolfgang Vorrichtung zur Überwachung eines elektrischen Stromnetzes
WO2008034400A1 (fr) * 2006-09-22 2008-03-27 Siemens Aktiengesellschaft Procédé pour générer un signal d'erreur indiquant la présence d'une erreur dans un circuit électrique de transformateur de courant auxiliaire, ainsi que dispositif de protection par circuit de compensation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339931A1 (de) 1973-08-03 1975-02-20 Siemens Ag Differentialschutzeinrichtung
EP0384306A1 (fr) * 1989-02-22 1990-08-29 Licentia Patent-Verwaltungs-GmbH Procédé pour générer des signaux de déclenchement pour interrupteurslors de courts-circuits dans des barres omnibus et/ou des sections de barres omnibus
EP1071961B1 (fr) 1998-04-17 2002-07-31 Siemens Aktiengesellschaft Dispositif, procede et installation de mesure de courant servant a mesurer un courant dans un conducteur
DE20220276U1 (de) * 2002-02-25 2003-06-18 Schulze Wolfgang Vorrichtung zur Überwachung eines elektrischen Stromnetzes
WO2008034400A1 (fr) * 2006-09-22 2008-03-27 Siemens Aktiengesellschaft Procédé pour générer un signal d'erreur indiquant la présence d'une erreur dans un circuit électrique de transformateur de courant auxiliaire, ainsi que dispositif de protection par circuit de compensation

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105162092A (zh) * 2015-08-27 2015-12-16 南京南瑞继保电气有限公司 远方跳闸保护故障就地判别方法
EP3300199A1 (fr) 2016-09-22 2018-03-28 Siemens Aktiengesellschaft Procédé et dispositif destinés à contrôler un disjoncteur pour un réseau d'alimentation en énergie électrique lors du passage à zéro du courant
US10734179B2 (en) 2016-09-22 2020-08-04 Siemens Aktiengesellschaft Method and apparatus for controlling a circuit breaker in an electrical energy supply network
CN111512512A (zh) * 2017-12-20 2020-08-07 Abb电网瑞士股份公司 使用传输线路的多终端测量的相位选择
WO2019120517A1 (fr) * 2017-12-20 2019-06-27 Abb Schweiz Ag Sélection de phase utilisant des mesures multiterminal d'une ligne de transmission
US11280824B2 (en) 2017-12-20 2022-03-22 Hitachi Energy Switzerland Ag High sensitive phase selection method
CN111512512B (zh) * 2017-12-20 2021-07-30 Abb电网瑞士股份公司 使用传输线路的多终端测量的相位选择
CN110601129A (zh) * 2019-09-05 2019-12-20 深圳供电局有限公司 一种电网输电线路零序保护整定值现场校验系统及方法
CN110676802A (zh) * 2019-09-05 2020-01-10 深圳供电局有限公司 一种光纤电流差动保护整定值现场校验系统及方法
CN110676802B (zh) * 2019-09-05 2021-09-24 深圳供电局有限公司 一种光纤电流差动保护整定值现场校验系统及方法
CN110646687B (zh) * 2019-09-05 2022-02-08 深圳供电局有限公司 一种电网输电线路的距离保护整定值现场校验系统及方法
CN110646687A (zh) * 2019-09-05 2020-01-03 深圳供电局有限公司 一种电网输电线路的距离保护整定值现场校验系统及方法
CN114126028A (zh) * 2020-08-28 2022-03-01 宸芯科技有限公司 一种差动保护方法、装置、通信单元和存储介质
CN114126028B (zh) * 2020-08-28 2024-06-11 宸芯科技股份有限公司 一种差动保护方法、装置、通信单元和存储介质

Similar Documents

Publication Publication Date Title
EP3136528B1 (fr) Procede de protection differentielle, dispositif de protection differentielle et systeme de protection differentielle
EP2605352B1 (fr) Protection de lignes parallèles d'un réseau d'alimentation en énergie électrique
EP3447870B1 (fr) Procédé de protection différentielle, dispositif de protection différentielle et système de protection différentielle
EP3198698B1 (fr) Procédé de protection de différentiel et appareil de protection de différentiel permettant de mettre en oeuvre un procédé de protection de différentiel
WO2015028062A1 (fr) Procédé de protection différentielle et appareil de protection différentielle permettant la mise en œuvre d'un tel procédé
EP3477808B1 (fr) Procédé, appareil de protection et système de protection permettant de reconnaître un défaut sur une ligne d'un réseau d'alimentation électrique
DE2155470B2 (de) Verfahren zum digitalen Bestimmen der Lage der Nulldurchgange eines sinus förmigen Wechselstromsignals
WO2013010591A1 (fr) Détection et localisation de défauts dans une ligne de distribution d'énergie alimentée d'un seul côté
EP3719510B1 (fr) Procédé, dispositif et système de détection d'un emplacement de défaillance sur une conduite d'un réseau d'alimentation électrique
EP3876373B1 (fr) Procédé de protection différentielle, dispositif de protection différentielle et système de protection différentielle
EP3968037A1 (fr) Procédé et dispositif de détermination d'un emplacement défectueux dans un réseau de distribution d'énergie électrique
DE102007017543A1 (de) Verfahren zur Entfernungsortung von Erdschlüssen
EP2289137A1 (fr) Ensemble et procédé pour produire un signal d erreur
EP3036808B1 (fr) Procédé et système de protection différentielle
DE2604311A1 (de) Phasenvergleichsrelais
DE102012215166B4 (de) Schaltgerät für einen Einphasenmotor und einen Drehstrommotor
WO2013060382A1 (fr) Procédé et appareil de protection pour détecter un défaut à la terre dans un réseau d'alimentation en énergie électrique polyphasé, pourvu d'un point neutre compensé ou isolé
EP2345123B1 (fr) Procédé de protection différentielle et appareil de protection différentielle
EP3916939A1 (fr) Procédé pour une protection de conduites et agencement de protection
EP2901534B1 (fr) Procédé de protection différentielle et appareil de protection servant à mettre en uvre un procédé de protection différentielle
EP3524467B1 (fr) Procédé et dispositif de surveillance des conducteurs électriques et des raccordements dans des sous-stations à redresseur et des sections de route des voies électriques associées
EP4064490A1 (fr) Appareil de protection différentielle et système de protection permettant de surveiller des objets de protection d'un réseau d'alimentation énergétique
DE19959793B4 (de) Differentialschutzverfahren
DE60120698T2 (de) Verfahren zur detektion von widerstandsbehafteten fehlern
EP3913382B1 (fr) Procédé et dispositif de détermination de la localisation d'un défaut non symétrique à trois pôles sur une ligne d'un réseau d'alimentation électrique triphasé

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: 13756126

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13756126

Country of ref document: EP

Kind code of ref document: A1