WO2009012800A1 - Appareil de protection et procédé de fonctionnement d'un appareil de protection - Google Patents

Appareil de protection et procédé de fonctionnement d'un appareil de protection Download PDF

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Publication number
WO2009012800A1
WO2009012800A1 PCT/EP2007/006704 EP2007006704W WO2009012800A1 WO 2009012800 A1 WO2009012800 A1 WO 2009012800A1 EP 2007006704 W EP2007006704 W EP 2007006704W WO 2009012800 A1 WO2009012800 A1 WO 2009012800A1
Authority
WO
WIPO (PCT)
Prior art keywords
protection
protective
devices
zones
secondary protection
Prior art date
Application number
PCT/EP2007/006704
Other languages
German (de)
English (en)
Inventor
Jörg BLUMSCHEIN
Tevfik Sezi
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 EP07786414A priority Critical patent/EP2171821A1/fr
Priority to PCT/EP2007/006704 priority patent/WO2009012800A1/fr
Priority to CN2007801000045A priority patent/CN101755373B/zh
Publication of WO2009012800A1 publication Critical patent/WO2009012800A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/30—Staggered disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values

Definitions

  • the invention relates to a protective device with the features according to the preamble of claim 1.
  • Such protective devices are sold, for example, by Siemens AG under the product name SIPROTEC. These protective devices are used to protect a protective device associated with the electrical line, hereinafter called own line, a power supply system. They have a main protection function which, in the event of a fault on their own line, quickly generates a main trip signal for switching off the own line, if specified main protection tripping conditions are met.
  • the previously known protection devices can also have a reserve protection function which is suitable for generating a reserve triggering signal for switching off one's own line delayed by a predetermined staggering time without fulfilling the actual main protection triggering conditions if predetermined reserve protection triggering conditions exist.
  • the mentioned reserve protection function can cause the problem that by switching off a line of the energy supply system by a protective device in other neighboring protective devices tripping conditions are met, so that it in rare cases to a cascaded shutdown of lines through a variety of protection devices and a so-called "blackout" occurs, in which to a significant extent also parts of the
  • Power supply system are shut down, which are actually not affected by an error and actually should not have been shut down because the Protective devices specified in the main protection tripping conditions were not fulfilled.
  • the invention has the object to provide a protective device in which a shutdown of fault-free sections of a power supply system is even better avoided than before in the event of a system failure.
  • the protective device has a communication device for communication with indirectly or immediately adjacent protective devices and a control device connected to the communication device, and that the control device for forming a reserve protection function - hereinafter referred to as "first" reserve protection function to distinguish from other reserve protection function - configured is that it can also check, based on the transmitted current readings of adjacent protection devices using the Kirchoffoff law, whether an error has occurred within one or more secondary protection zones defined by the adjacent protection devices and that it is a back-up trip signal - hereinafter differentiated from other back-up trip signals "first".
  • Reserve trip signal - can be used to switch off the own line if an error has occurred within one of these secondary protection zones is.
  • a significant advantage of the protective device according to the invention is the fact that this is not only the own line and, in cooperation with neighboring protection devices, also cross-border zones - here referred to as secondary protection zones - by making use of the Kirchhoff law principle. For example, if the protection device detects that the sum of the currents within an associated secondary protection zone within which it is located is zero or approximately equal to zero and thus no fault has occurred in this secondary protection zone, the protection device may also switch off its own line in case of overload permanently or for a predetermined period of time distance, whereby the initially described cascaded automatic shutdown of not faulty sections of the power plant is avoided.
  • the secondary protection zones at least one of which is formed with at least one inner protection device which is completely contained within the secondary protection zone, and with at least one additional, electrically outside protective device, thereby electrically the at least one inner protection device around a closed outer shell of the secondary protection zone is defined by external protection devices.
  • the secondary protection zones are formed such that each protection device forms an internal protection device for at least one of the secondary protection zones.
  • the first backup protection function operates with as little delay as possible, preferably faster than, just as fast or almost as fast as the main contactor function of the protection device and in particular faster than other backup protection function that delays according to a predetermined staggering time to react.
  • a delayed response of other staggered backup protection functions can be blocked permanently or for a predetermined period of time if the first backup protection function has not detected an error in its associated secondary protection zones.
  • the control device of the protective device preferably has an input device into which inputs can be fed for determining the assigned adjacent protective devices and for defining one or more secondary protection zones.
  • the user can be set individually how secondary protection zones should be procured and arranged in the energy supply system.
  • control device of the protective device can have a zone-forming function, which can automatically determine one or more secondary protection zones on the basis of predetermined topology data of the energy supply system.
  • a zoning function is designed such that an automatic formation of the secondary protection zones depending on the quality and / or the loading there is a communication connection to the neighboring protection devices.
  • the protective device also has a second reserve protection function which differs from the first reserve protection function and which is suitable for generating a second reserve triggering signal for switching off the dedicated line in the event of an overload situation on the own line without fulfilling the predetermined main protection triggering conditions by a predetermined staggering time. if predetermined overload tripping conditions are met.
  • the control device will activate the second backup protection function if there is no communication connection to the protection devices of the secondary protection zones and no current measured values are received; in a corresponding manner, it will preferably deactivate the second reserve protection function if there is a communication connection to the protection devices of the secondary protection zones and their current measured values are received.
  • the controller may operate the first backup protection function and the second backup protection function in parallel and during the staging time of the second backup function using the transmitted current readings of the protection devices of the secondary protection zones using the Kirchoffoff law check whether an error has occurred within the associated secondary protection zones, and generating the second Permanently or temporarily block the reserve trip signal if it detects that an error has not occurred within any of its associated secondary protection zones.
  • the protection devices each have a time synchronization device which has a allows time-synchronous measurement of the current measured values in comparison to the neighboring protection devices.
  • the control device is preferably connected to the time synchronization device and capable of receiving the current measured values of its own line in a time-synchronized manner relative to those of the neighboring protective devices.
  • the control device is preferably suitable for generating pointer measured variables as current measured values, for example according to the IEEE standard C37.118.
  • control device is also suitable for sending its pointer measurement values with the communication device to the neighboring protection devices, in particular via a wired or wireless telephone or data connection, for example via Ethernet or Internet.
  • control device is suitable for phase-selectively measuring the current measured values of electrical phase conductors of its own line and for forming phase-selective current measured values.
  • a method for operating a protective device is also considered.
  • a secondary protection zone with at least one inner protection device which is completely contained within the secondary protection zone, and at least one additional electrically external protection device is formed, whereby electrically around the at least one inner protection device around a closed outer shell of the secondary protection zone external protection devices is defined, and that the secondary protection zone formed in this way is entered into the control device of the protective device.
  • the invention also relates to an arrangement with a plurality of protective devices, as described above, for protecting a power supply system, wherein the protective devices form at least two secondary protection zones to be monitored.
  • At least one of the protective devices preferably belongs to at least two, preferably otherwise non-overlapping, secondary protection zones.
  • the invention relates to a method for protecting a predetermined electrical line of a power supply system, with a main protection function of a protective device in the event of a fault on the given line promptly a main trigger signal for switching off the predetermined line is generated, if predetermined Hauptschauslinate claim are met ,
  • a centrally arranged monitoring device can be used as the central device, which communicates with the protective device assigned to the predetermined line in a communication connection.
  • the definition of the secondary protection zones takes place in the centrally arranged monitoring device.
  • the definition of the secondary protection zones is staggered and begins with large secondary protection zones for gross fault location and continues successively with decreasing secondary protection zones until the fault location by determining a smaller, preferably the smallest possible , Secondary protection zone has been identified with fault behavior.
  • FIG. 1 shows a section of a power supply system with unclaimed protective devices for general explanation
  • FIG. 2 shows a section of a power supply system which is equipped with exemplary embodiments of protection devices according to the invention, an embodiment variant of the method according to the invention being explained by way of example with reference to this energy supply system
  • Figure 3 shows an embodiment of a protective device for the arrangement according to the figure 2 and
  • Figure 4 shows a portion of a power supply system, which is equipped with another embodiment of protection devices according to the invention, namely those that cooperate with a central unit, which is explained by way of example, another variant of the inventive method with reference to this energy supply system.
  • FIG. 1 shows a section 10 of a power supply system 20; the section 10 is defined by the terminals A, B, C and D as an example. Within the section 10 protection devices 10, 11, 12, 13, 14, 15, 16 and 17 are present, each of which is assigned a separate line for protection purposes.
  • the protective devices of the power supply system each have a main protection function which, in the event of a fault on the own line, promptly generates a main trip signal for switching off the own line, if predetermined main protection tripping conditions are met.
  • the protective devices additionally each have a reserve protection function which is suitable in the event of an overload situation on the own line without fulfillment of the prescribed Main protection trip conditions delayed by a predetermined stagger time to generate a reserve trip signal to shut down the own line, provided that predetermined overload tripping conditions are met.
  • the overload trip conditions are less stringent than the main trip conditions.
  • the backup protection function is intended, for example, to ensure that an overload situation is remedied, even if there is no "correct" fault situation on the own line, which is detected by the main contactor function.
  • the protective devices 14, 15, 16 and 17, for example, belong to the same switchgear 24 and are powered by the same station battery 25 with energy.
  • protective devices 30 and 31 in adjacent sections 32 and 33 of the energy supply system would also be able to be triggered with a time delay, so that switching off several sections of the energy supply system 20 or even all sections of the energy supply system 20 may occur.
  • FIG. 2 shows an exemplary embodiment of a power supply system which is equipped with exemplary embodiments of protection devices 40 to 47 according to the invention.
  • the protective devices 40 to 47 in the energy supply system 20 according to FIG. 2 are each provided with a communication device 70 with an antenna 71 (see FIG. 3) for communication with indirectly or immediately adjacent protective devices and equipped with a controller 72 connected to the communication device 70;
  • An exemplary embodiment of the protective devices 40 to 47 is shown by way of example in FIG. 3.
  • the communication devices can be wired, for example via networks such as the Internet, or wirelessly, for example via radio.
  • the control device 72 may have, for example, an input device 73 into which adjacent protective devices for defining one or more secondary protection zones can be input on the user side.
  • the control device 72 may have a zoning function 74, which is based on predetermined topology data of the energy. gietrayssstrom 20 can determine one or more secondary protection zones automatically.
  • the protection device may include a Zeitsynchronisier Surprise 75, which in comparison to the adjacent
  • Protective devices enables time-synchronous measurement of current measured values; in this case, the controller 72 is preferably connected to the time synchronizer 75 and is adapted to time synchronously receive the current readings of its own line to the neighboring protection devices.
  • the communication devices make it possible for the protective devices of each section of the energy supply system 20 to be able to communicate with one another and thus to form secondary protection zones defined by the protective devices.
  • the protective devices 40 to 47 form a secondary protection zone 50.
  • the protective devices 45-47 function as internal protective devices, around which a closed outer shell 51 of the secondary protection zone 50 by the external protective devices 40 -43 is defined.
  • Each of the protective devices 40 to 47 now measures the current on its own line, preferably in a phase-selective manner, and generates corresponding current-indicator measured quantities that are transmitted to all other protective devices of the secondary protection zone 50.
  • all information is present which allows each protection device individually and autonomously, according to the Kirchoffoff law, to determine whether or not there is an error within the secondary protection zone 50.
  • the protective devices preferably measure their current measured values in a time-synchronized manner and provide their current measured values with corresponding time stamps.
  • Time stamps of this kind can be obtained, for example, from GPS or other radio signals.
  • the protective devices will respectively generate a reserve trigger signal as the first backup protection function, which switches off its own line. Switching off by the first backup protection function preferably takes place without delay, at least faster than time-staggered, other backup protection functions.
  • the protective devices 40, 41 and 42 will switch off immediately, and indeed still before time-delayed or staggered working reserve protection functions of the other sections 32 or 33 of the power system 20 can respond and cause switching off further sections 32 or 33, which are themselves error-free.
  • the protective devices of the two other sections 32 and 33 of the energy supply system 20 shown in FIG. 1 also preferably form secondary protection zones 60 and 61 which prevent cross-section triggering of protective devices of other sections of the energy supply system.
  • FIG. 4 shows a further exemplary embodiment for protecting a power supply system 20.
  • the communication devices of the protective devices transmit their measured current values to a central device 100, which in the example according to FIG. 4 is formed by a centrally arranged monitoring device and which checks with the current measured values of directly or indirectly adjacent protective devices using the Kirchhoff law whether an error has occurred within the respective defined by the protective devices considered secondary protection zone. If this is the case, the lines of the corresponding secondary protection zone are switched off.
  • the central device 100 forms secondary protection zones 50, 60 or 61, as have already been explained above in connection with FIG.
  • the central device 100 computes, with the received current measured values, a large number of secondary protection zones which may or may not overlap, and tests for each secondary protection zone formed in this way whether there is an error or not. It is considered to be particularly advantageous if the definition of the secondary protection zones in the central device 100 is staggered and starts with large secondary protection zones for coarse fault location and is continued successively with decreasing secondary protection zones until the fault location is determined by determining a smaller, preferably smallest possible, secondary protection zone has been identified with fault behavior.
  • Procedure can be achieved that in the event of an error as little as possible lines of the power system 20 are turned off.

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne, entre autres, un appareil de protection (40-47) destiné à protéger une ligne électrique d'un système d'alimentation en énergie (20), associée à cet appareil de protection et ci-après dénommée ligne intrinsèque, lequel appareil présente une fonction de protection principale qui, si un défaut apparaît sur la ligne intrinsèque, produit alors un signal de déclenchement principal entraînant la déconnexion de la ligne intrinsèque, dans la mesure où des conditions de déclenchement de protection principales prédéterminées sont remplies. Selon l'invention, l'appareil de protection est pourvu d'un dispositif de communication (70), destiné à communiquer avec des appareils de protection directement ou indirectement voisins, et d'un dispositif de commande (72), relié au dispositif de communication, et ce dispositif de commande est conçu pour fournir une fonction de protection de réserve, le dispositif de commande utilisant les valeurs de mesure de courant (11-14) d'appareils de protection voisins qui lui ont été transmises, en appliquant la loi de Kirchhoff, pour vérifier si un défaut est apparu dans une ou plusieurs zones de protection secondaire (50), définies par les appareils de protection voisins, et ledit dispositif de commande pouvant produire un signal de déclenchement de réserve entraînant la déconnexion de la ligne intrinsèque, si un défaut est apparu dans une de ces zones de protection secondaire.
PCT/EP2007/006704 2007-07-24 2007-07-24 Appareil de protection et procédé de fonctionnement d'un appareil de protection WO2009012800A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07786414A EP2171821A1 (fr) 2007-07-24 2007-07-24 Appareil de protection et procédé de fonctionnement d'un appareil de protection
PCT/EP2007/006704 WO2009012800A1 (fr) 2007-07-24 2007-07-24 Appareil de protection et procédé de fonctionnement d'un appareil de protection
CN2007801000045A CN101755373B (zh) 2007-07-24 2007-07-24 保护设备和用于驱动保护设备的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/006704 WO2009012800A1 (fr) 2007-07-24 2007-07-24 Appareil de protection et procédé de fonctionnement d'un appareil de protection

Publications (1)

Publication Number Publication Date
WO2009012800A1 true WO2009012800A1 (fr) 2009-01-29

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Application Number Title Priority Date Filing Date
PCT/EP2007/006704 WO2009012800A1 (fr) 2007-07-24 2007-07-24 Appareil de protection et procédé de fonctionnement d'un appareil de protection

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EP (1) EP2171821A1 (fr)
CN (1) CN101755373B (fr)
WO (1) WO2009012800A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2605352A2 (fr) 2009-12-16 2013-06-19 Siemens Aktiengesellschaft Protection de lignes parallèles d'un réseau d'alimentation en énergie électrique
EP2787587A4 (fr) * 2011-11-25 2015-07-22 Toshiba Kk Dispositif de relais de protection pour ligne de transmission

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102323500B (zh) * 2011-07-08 2014-07-09 贵州电力试验研究院 变电站双套母线差动保护动作不一致的解决方法及装置
EP3605436B1 (fr) * 2018-07-31 2022-03-09 Schneider Electric Industries SAS Procédé de localisation de défauts de phase dans un micro-réseau et controlleur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6694271B1 (en) * 2001-10-29 2004-02-17 The United States Of America As Represented By The Secretary Of The Navy Integrated circuit breaker protection software

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3102535B2 (ja) * 1993-07-22 2000-10-23 株式会社日立製作所 スポットネットワーク受変電システム
GB2375242A (en) * 2001-05-03 2002-11-06 Alstom Protecting a section of an electrical power line
CN1167176C (zh) * 2001-08-17 2004-09-15 清华大学 配电网继电保护与故障定位系统

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6694271B1 (en) * 2001-10-29 2004-02-17 The United States Of America As Represented By The Secretary Of The Navy Integrated circuit breaker protection software

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2605352A2 (fr) 2009-12-16 2013-06-19 Siemens Aktiengesellschaft Protection de lignes parallèles d'un réseau d'alimentation en énergie électrique
EP2605353A2 (fr) 2009-12-16 2013-06-19 Siemens Aktiengesellschaft Protection de lignes parallèles d'un réseau d'alimentation en énergie électrique
EP2605354A2 (fr) 2009-12-16 2013-06-19 Siemens Aktiengesellschaft Protection de lignes parallèles d'un réseau d'alimentation en énergie électrique
EP2787587A4 (fr) * 2011-11-25 2015-07-22 Toshiba Kk Dispositif de relais de protection pour ligne de transmission

Also Published As

Publication number Publication date
CN101755373A (zh) 2010-06-23
CN101755373B (zh) 2013-11-13
EP2171821A1 (fr) 2010-04-07

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