DE102009047980A1 - Activation control device for controlling separation switch device in current path between photo voltaic system and low voltage network, has program part enabling switching-on and off separation switch device in time controlled manner - Google Patents
Activation control device for controlling separation switch device in current path between photo voltaic system and low voltage network, has program part enabling switching-on and off separation switch device in time controlled manner Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
- G04C23/14—Mechanisms continuously running to relate the operation(s) to the time of day
- G04C23/18—Mechanisms continuously running to relate the operation(s) to the time of day for operating one device at a number of different times
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G15/00—Time-pieces comprising means to be operated at preselected times or after preselected time intervals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
- F25D2400/361—Interactive visual displays
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
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- 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
- H02H7/22—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 for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—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 for distribution gear, e.g. bus-bar systems; for switching devices for switches
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
Description
Die Erfindung bezieht sich auf ein Freischaltsteuergerät zum Ansteuern einer Trennschaltervorrichtung, im Strompfad zwischen einer dezentralen elektrischen Energieeinspeiseanlage und einem öffentlichen Stromnetz, mit einer Überwachungselektronik für Störungen des Stromnetzes und einer redundanten, einfehlersicheren Steuerschaltung, die zum software-geführten Ansteuern der Trennschaltervorrichtung ausgebildet ist.The invention relates to a release control device for driving a circuit breaker device, in the current path between a decentralized electrical energy supply system and a public power grid, with a monitoring electronics for disturbances of the power grid and a redundant, fail-safe control circuit, which is designed for software-controlled driving the circuit breaker device.
Derartige Freischaltsteuergeräte arbeiten als selbsttätige Schaltstellen zwischen einer netzparallelen Eigenerzeugungsanlage, die eine dezentrale Energieeinspeiseanlage bildet, und dem öffentlichen Niederspannungsnetz (öffentliches Stromnetz) und hat die in der Vergangenheit von den EVUs verlangten jederzeit zugänglichen Freischaltstellen abgelöst, über die bei Wartungsarbeiten oder Störungen die Energieeinspeiseanlage vom öffentliche Stromnetz getrennt werden konnte. Derartige selbsttätige Schaltstellen bzw. Freischaltvorrichtungen sind z. B. in der
Verschiedene Ausführungen von Energieeinspeiseanlagen unter anderem mit Freischaltvorrichtung sind in der
Eine Steuerschaltung der Freischaltvorrichtung erfasst über eine Überwachungselektronik Störungen des Stromnetzes, insbesondere Toleranzabweichungen der Netzfrequenz, der Netzspannung und einer Impedanz, wie in der Norm näher spezifiziert und in dem genannten Stand der Technik näher ausgeführt ist.A control circuit of the activation device detects via a monitoring electronics disturbances of the power network, in particular tolerance deviations of the mains frequency, the mains voltage and an impedance, as specified in more detail in the specification and specified in the cited prior art.
Bekannte Freischaltvorrichtungen mit ihrer Steuerschaltung sind vom Schaltungsaufwand und vom Aufbau her relativ aufwändig und voluminös und verbrauchen ihrerseits zu ihrem Betrieb Energie, womit entsprechende Nachteile verbunden sind.Known unlocking devices with their control circuit are relatively complex and bulky in terms of circuit complexity and construction and, in turn, consume energy for their operation, with associated disadvantages.
Der Erfindung liegt die Aufgabe zugrunde, ein Freischaltsteuergerät der eingangs genannten Art bereitzustellen, das bei möglichst energiesparender Ausführung verbesserte Einbaumöglichkeiten und Betriebsmöglichkeiten ergibt.The invention has for its object to provide an activation control device of the type mentioned, which results in the best possible energy-saving design improved installation options and operating options.
Diese Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst. Hierbei ist vorgesehen, dass die Steuerschaltung mit einer Echtzeituhr versehen ist und dass die Software einen Programmteil umfasst, mittels dessen auf der Basis von Signalen der Echtzeituhr die Trennschaltervorrichtung zeitgesteuert abschaltbar und einschaltbar ist.This object is achieved with the features of
Mit diesen Maßnahmen wird ein kompakter Aufbau und eine an die zentrale Energieeinspeiseanlage flexibel anpassbare Betriebsweise begünstigt.These measures foster a compact design and a mode of operation that can be flexibly adapted to the central energy supply system.
Ist vorgesehen, dass die Steuerschaltung zum Aufnehmen eines manuell über eine Eingabeeinheit eingegebenen oder automatisch zugeführten Betriebsmodus ausgebildet ist, der von der Arbeitsweise einer zugeordneten Energieerzeugungseinrichtung abhängig ist, und dass der Programmteil in der Weise ausgebildet ist, dass er den zeitgesteuerten Betrieb der Trennschaltervorrichtung einschaltet oder abschaltet, so ergeben sich weitere vorteilhafte Anpassmöglichkeiten an verschiedene Energieeinspeiseanlagen. Beispielsweise kann bei einer Photovoltaikanlage während der Nachtstunden (Dunkelstunden) eine Abschaltung nicht nur elektrischer Verbraucher des Freischaltsteuergerätes erfolgen, sondern auch der damit anzusteuernden Trennschaltervorrichtung mit den Trennschaltereinheiten, die in der Regel als Schütze ausgebildet sind und im eingeschalteten Zustand z. B. einen Energieverbrauch von etwa 20 Wh besitzen. Eine Abschaltung während der Dunkelstunden ergibt dadurch eine beachtliche Energieeinsparung.It is provided that the control circuit is designed to record an operating mode entered manually or automatically via an input unit, which depends on the operation of an associated power generation device, and in that the program part is designed to switch on the time-controlled operation of the circuit breaker device or switches off, so there are more advantageous adjustment options for different energy supply systems. For example, in a photovoltaic system during the night hours (dark hours) shutdown not only electrical consumers of the activation control unit, but also the so-triggered disconnect device with the disconnector units, which are usually designed as contactors and in the on state z. B. have an energy consumption of about 20 Wh. A shutdown during the dark hours results in a considerable energy savings.
Vorteilhafte Ausgestaltungsvarianten bestehen dabei darin, dass die Zeitpunkte des Abschaltens und des Einschaltens oder die Abschaltdauer manuell oder automatisch einstellbar sind. Für eine automatische Einstellung können z. B. als Betriebswächter Sensoren eingesetzt werden, beispielsweise für den Betrieb der Energiewandleranlage oder für äußere physikalische Zustände wie Lichtmenge bei Photovoltaikanlagen oder Windaufkommen bei Windkraftanlagen oder entsprechende Größen bei anderen Anlagen.Advantageous design variants consist in the fact that the times of switching off and switching on or the switch-off are manually or automatically adjustable. For an automatic setting z. B. are used as operation monitor sensors, for example, for the operation of the energy converter system or for external physical conditions such as amount of light in photovoltaic systems or windfall in wind turbines or equivalent sizes in other plants.
Eine Sicherheitsvorkehrung besteht darin, dass bei eingetretener Störung des Stromnetzes während des Abschaltzeitraums, die zu einem vorgegebenen Einschaltzeitpunkt noch andauert, ein Wiedereinschalten der Trennschaltervorrichtung unterdrückt ist.A safety precaution is that in the event of a fault in the power supply system during the switch-off period, which still lasts at a predetermined switch-on time, a reconnection of the disconnecting switch device is suppressed.
Zu einem vorteilhaften Aufbau tragen die Maßnahmen bei, dass die Steuerschaltung eine zentrale Steuerungseinheit, insbesondere einen Mikrocontroller, aufweist, in der der Programmteil abläuft. The measures contribute to an advantageous construction in that the control circuit has a central control unit, in particular a microcontroller, in which the program part runs.
Eine für die Funktionssicherheit vorteilhafte Ausgestaltung besteht darin, dass die Echtzeituhr mit der zentralen Steuerungseinheit in Signalübertragungsverbindung gebracht ist und ein Zeittakt der Echtzeituhr zur Überprüfung des Steuerzeittakts der Steuerungseinheit herangezogen ist und bei fehlerhaftem Steuerzeittakt eine Abschaltung der Trennschaltervorrichtung erfolgt.An embodiment which is advantageous for the functional safety is that the real-time clock is brought into signal transmission connection with the central control unit and a time clock of the real-time clock is used to check the control time clock of the control unit and if the control time clock is faulty, the disconnect switch device is disconnected.
Zur Verringerung des Schaltungsaufwandes und zu einer kompakten Ausbildung tragen die Maßnahmen bei, dass dem Mikrocontroller eine Überwachungseinheit zum Überwachen seiner Funktionsfähigkeit zugeordnet ist.To reduce the circuit complexity and to a compact design, the measures contribute that the microcontroller is assigned a monitoring unit for monitoring its functionality.
Sichere Betriebsbedingungen werden dadurch unterstützt, dass die Steuerschaltung zum Ansteuern von zwei jeweils mit einer Netztrennfunktion ausgestatteten Trennschaltereinheiten der Trennschaltervorrichtung über zwei getrennte Steuerausgänge ausgebildet ist.Safe operating conditions are supported by the fact that the control circuit is designed to control two disconnector units of the disconnector device, each equipped with a network disconnection function, via two separate control outputs.
Ein geringer Schaltungsaufwand und eine zuverlässige Funktion werden ferner dadurch erreicht, dass der eine Steuerausgang von einem Ausgang des Mikrocontrollers mit Steuersignalen beaufschlagt ist und der andere Steuerausgang von einem weiteren Ausgang des Mikrocontrollers sowie zusätzlich von einem Ausgang der Überwachungseinheit beaufschlagt ist, wobei der weitere Ausgang des Mikrocontrollers und der Ausgang der Überwachungseinheit über eine Und-Verknüpfung miteinander verbunden sind, über deren Ausgang die zugeordnete Trennschaltereinheit nur dann geschlossen ist, wenn die fehlerfreie Normalfunktion des Mikrocontrollers mittels der Überwachungseinheit festgestellt ist und von dem Mikrocontroller ein Einschaltsignal erzeugt ist.A low circuit complexity and a reliable function are further achieved in that the one control output is supplied from an output of the microcontroller with control signals and the other control output is acted upon by a further output of the microcontroller and additionally by an output of the monitoring unit, wherein the further output of Microcontroller and the output of the monitoring unit are connected to each other via an AND, via whose output the associated disconnect switch unit is closed only when the error-free normal function of the microcontroller is detected by the monitoring unit and the microcontroller is a turn-on signal is generated.
Ein kompakter Aufbau mit zuverlässiger Funktion wird dadurch begünstigt, dass die Steuerschaltung zum Ansteuern der Trennschaltervorrichtung eine Schalteinrichtung mit Halbleiterschaltgliedern aufweist.A compact structure with reliable function is facilitated by the fact that the control circuit for driving the circuit breaker device has a switching device with semiconductor switching elements.
Mit den Maßnahmen, dass die Steuerschaltung und die Halbleiterschaltglieder, insbesondere Triacs, zur Ansteuerung mittels Phasenanschnittsteuerung ausgebildet sind, wird eine weitere Energieeinsparung mit flexiblen Anpassungsmöglichkeiten an Ansteuerbedingungen erhalten. Durch die Phasenanschnittsteuerung wird Energie zum Betreiben der Trennschaltereinheiten, insbesondere Schütze, eingespart, wobei der Phasenanschnittwinkel für einen sicheren Betrieb der Schütze einstellbar ist.With the measures that the control circuit and the semiconductor switching elements, in particular triacs, are designed for control by means of phase control, a further energy saving with flexible adaptation options is obtained at Ansteuerbedingungen. Energy saving for operating the isolating switch units, in particular contactors, is saved by the phase control, wherein the phase angle can be set for safe operation of the contactors.
Erweitere Steuerungsmöglichkeiten und vorteilhafte Einstellmöglichkeiten, beispielsweise für die Konfiguration der Steuerschaltung oder eine Zustandsabfrage, werden dadurch ermöglicht, dass die Steuerschaltung mit einer Schnittstelle, insbesondere einer Bus-Schnittstelle, mit einer Schnittstellensteuerung versehen ist. Bei Ausbildung als Bus-Schnittstelle können über einen angeschlossenen Bus Zustandsgrößen abgefragt und/oder eine zentrale Steuerung der Freischaltvorrichtung von einer entfernten Stelle aus vorgenommen werden.Extended control options and advantageous adjustment options, for example for the configuration of the control circuit or a status query, are made possible by the fact that the control circuit is provided with an interface, in particular a bus interface, with an interface control. In the case of training as a bus interface, state variables can be interrogated via a connected bus and / or a central control of the activation device can be made from a remote location.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:The invention will be explained in more detail by means of embodiments with reference to the drawings. Show it:
Wie aus
Die
Gemäß
Wie
Ferner wird bei der vorliegenden Steuerschaltung
Ein weiteres Ausführungsbeispiel der Steuerschaltung
Wie aus
Mittels der Echtzeituhr
Wie
Die Gestaltung der Steuerschaltung
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102004059100 A1 [0003] DE 102004059100 A1 [0003]
- DE 10207560 A1 [0003] DE 10207560 A1 [0003]
- EP 1965483 A1 [0003] EP 1965483 A1 [0003]
- DE 102005043883 A1 [0003] DE 102005043883 A1 [0003]
- DE 102007043512 A1 [0003] DE 102007043512 A1 [0003]
Zitierte Nicht-PatentliteraturCited non-patent literature
- DIN VDE 0126-1-1 [0002] DIN VDE 0126-1-1 [0002]
Claims (12)
Priority Applications (2)
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DE202009018199U DE202009018199U1 (en) | 2009-10-01 | 2009-10-01 | Unlock control unit |
DE102009047980A DE102009047980A1 (en) | 2009-10-01 | 2009-10-01 | Activation control device for controlling separation switch device in current path between photo voltaic system and low voltage network, has program part enabling switching-on and off separation switch device in time controlled manner |
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DE102009047980A DE102009047980A1 (en) | 2009-10-01 | 2009-10-01 | Activation control device for controlling separation switch device in current path between photo voltaic system and low voltage network, has program part enabling switching-on and off separation switch device in time controlled manner |
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DE102009047980A1 true DE102009047980A1 (en) | 2011-04-07 |
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DE202009018199U Expired - Lifetime DE202009018199U1 (en) | 2009-10-01 | 2009-10-01 | Unlock control unit |
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Cited By (7)
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DE202011005048U1 (en) * | 2011-04-08 | 2011-10-11 | Rudolf Baier | Electrical power distribution device for a building |
DE102011051199A1 (en) | 2011-06-20 | 2012-12-20 | Changetec Gmbh | Method for islanding detection in self generating system, involves triggering time measurement, if abandonment of tolerance range is determined, where recognition signal is delivered for island operation within predetermined time period |
DE102011122359A1 (en) * | 2011-12-23 | 2013-06-27 | Kostal Industrie Elektrik Gmbh | Circuit arrangement with an inverter and method for functional testing of electromechanical switches |
AT512983A1 (en) * | 2012-06-13 | 2013-12-15 | Fronius Int Gmbh | Method for testing a separation point of a photovoltaic inverter and photovoltaic inverter |
AT513866A1 (en) * | 2013-02-14 | 2014-08-15 | Fronius Int Gmbh | Method for testing a separation point of a photovoltaic inverter and photovoltaic inverter |
CN106655111A (en) * | 2016-10-20 | 2017-05-10 | 国家电网公司 | Circuit breaker tripping and closing coil real-time measurement and control protection device and protection method |
DE102018118647A1 (en) * | 2018-08-01 | 2020-02-06 | Ifm Electronic Gmbh | Single fail-safe electronic safety circuit |
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DE102012100673A1 (en) | 2012-01-27 | 2013-08-01 | Changetec Gmbh | Device for supplying electrical energy from e.g. photovoltaic current generating device to low voltage-mains supply, has switching units connected to coupling units to switch coupling units between phases based on power difference quantity |
DE102012104005A1 (en) * | 2012-05-07 | 2013-11-07 | Adensis Gmbh | Photovoltaic system and method for operating a photovoltaic system for feeding electrical power into a medium-voltage network |
DE102012018411A1 (en) | 2012-09-17 | 2014-05-15 | Kostal Industrie Elektrik Gmbh | Circuit arrangement, and level converter and comparator circuit for the circuit arrangement |
DE102012023424B4 (en) * | 2012-11-29 | 2019-08-14 | Kostal Industrie Elektrik Gmbh | Energy distribution system with a control device |
DE102017126996A1 (en) | 2017-11-16 | 2019-05-16 | Solarinvert Gmbh | inverter means |
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DE202011005048U1 (en) * | 2011-04-08 | 2011-10-11 | Rudolf Baier | Electrical power distribution device for a building |
DE102011051199A1 (en) | 2011-06-20 | 2012-12-20 | Changetec Gmbh | Method for islanding detection in self generating system, involves triggering time measurement, if abandonment of tolerance range is determined, where recognition signal is delivered for island operation within predetermined time period |
DE102011122359A1 (en) * | 2011-12-23 | 2013-06-27 | Kostal Industrie Elektrik Gmbh | Circuit arrangement with an inverter and method for functional testing of electromechanical switches |
EP2608375A3 (en) * | 2011-12-23 | 2015-01-07 | Kostal Industrie Elektrik GmbH | Circuit arrangement with an inverter and method for testing the functionality of electromechanical switches |
AT512983A1 (en) * | 2012-06-13 | 2013-12-15 | Fronius Int Gmbh | Method for testing a separation point of a photovoltaic inverter and photovoltaic inverter |
AT512983B1 (en) * | 2012-06-13 | 2014-06-15 | Fronius Int Gmbh | Method for testing a separation point of a photovoltaic inverter and photovoltaic inverter |
US9494659B2 (en) | 2012-06-13 | 2016-11-15 | Fronius International Gmbh | Method for checking a separation point of a photovoltaic inverter, and photovoltaic inverter |
AT513866A1 (en) * | 2013-02-14 | 2014-08-15 | Fronius Int Gmbh | Method for testing a separation point of a photovoltaic inverter and photovoltaic inverter |
AT513866B1 (en) * | 2013-02-14 | 2015-12-15 | Fronius Int Gmbh | Method for testing a separation point of a photovoltaic inverter and photovoltaic inverter |
US9297847B2 (en) | 2013-02-14 | 2016-03-29 | Fronius International Gmbh | Method for checking a separation point between a photovoltaic inverter and power supply network and photovoltaic inverter |
CN106655111A (en) * | 2016-10-20 | 2017-05-10 | 国家电网公司 | Circuit breaker tripping and closing coil real-time measurement and control protection device and protection method |
DE102018118647A1 (en) * | 2018-08-01 | 2020-02-06 | Ifm Electronic Gmbh | Single fail-safe electronic safety circuit |
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