WO2013185158A1 - Sperrung des wechselrichters einer photovoltaik-anlage bei diebstahl - Google Patents
Sperrung des wechselrichters einer photovoltaik-anlage bei diebstahl Download PDFInfo
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- WO2013185158A1 WO2013185158A1 PCT/AT2013/050116 AT2013050116W WO2013185158A1 WO 2013185158 A1 WO2013185158 A1 WO 2013185158A1 AT 2013050116 W AT2013050116 W AT 2013050116W WO 2013185158 A1 WO2013185158 A1 WO 2013185158A1
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- WIPO (PCT)
- Prior art keywords
- inverter
- owner
- actual
- photovoltaic system
- information
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- 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
- G05F1/66—Regulating electric power
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
- G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector
- G08B13/1418—Removal detected by failure in electrical connection between the appliance and a control centre, home control panel or a power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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
- H02J3/04—Arrangements for connecting networks of the same frequency but supplied from different sources
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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 feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/95—Circuit arrangements
- H10F77/953—Circuit arrangements for devices having potential barriers
- H10F77/955—Circuit arrangements for devices having potential barriers for photovoltaic devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
- H02J2101/22—Solar energy
- H02J2101/24—Photovoltaics
- H02J2101/25—Photovoltaics involving maximum power point tracking control for photovoltaic sources
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Definitions
- the invention relates to a method for operating an inverter of a photovoltaic system, in which a reference value / reference curve of at least one parameter of the photovoltaic system is compared with an actual value / actual profile of said parameter. Furthermore, the invention relates to an inverter for a photovoltaic system, comprising means for comparing a reference value / reference curve of at least one parameter of the photovoltaic system with an actual value / actual profile of said parameter.
- inverter or an operating method of the type mentioned are known in principle. For example, these are used to detect faults in a photovoltaic system.
- inverter or an operating method of the type mentioned are known in principle. For example, these are used to detect faults in a photovoltaic system.
- AT 508 834 A1 As a relevant prior art, reference is made to the applicant's AT 508 834 A1.
- the object of the invention is therefore to provide an improved inverter of a photovoltaic system and an improved method for operating the same.
- the aforementioned thefts are to be prevented as far as possible or at least their education be facilitated.
- the object of the invention is achieved by a method of the type mentioned, in which the inverter function of the inverter is at least temporarily locked when the deviation between said actual value / actual course and the reference value / reference curve exceeds a predetermined threshold.
- the object of the invention is further achieved with an inverter of the aforementioned type, additionally comprising means for at least temporarily blocking the inverter function of the inverter, if the deviation between the at least one mentioned actual value / actual course and the at least one reference value / reference curve exceeds specified threshold.
- a "normal operation” or “control operation” means an operating state of the inverter in which it is operated in a designated environment for which the inverter is specified, and in particular performs its inverter function.
- a load shedding of the inverter which is caused by a voltage fluctuation of a network fed by the inverter, not to be understood as a “lock” or “blocking” within the meaning of the invention, since they can occur at any time in the voltage fluctuations in the ordinary operation.
- a "lock” or “blocking” in particular also a deactivation of the inverter function of the inverter can be understood, which is not automatically reversed alone by the elimination of the reason for the lock or lock.
- the inverter function of the inverter is disabled only after a predefinable period of time after exceeding the said threshold. In this way, it can be avoided that the inverter function is deactivated even with only short-lasting deviations between the mentioned actual value / actual course and the reference value / reference curve / reference ratio. It is advantageous if in addition to the blocking of the inverter function, a status message is output, which is associated with a theft of the inverter. This makes it possible to signal an owner of the inverter that it is marked as stolen. On the one hand, this can deter the thief of the inverter and prevent it from further actions, since the inverter is difficult to sell in this state.
- the status message may include reference information stored in the inverter about the location and / or owner of the inverter.
- the reference value / reference profile of the at least one parameter of the photovoltaic system is detected and stored at a first time or during a first time period
- the actual value / actual course of said parameter is recorded at a second time or in a second time period.
- reference values determined in the past are compared with currently determined actual values and used for blocking an inverter.
- a reference value / reference curve / reference ratio can be preset or entered manually in advance.
- the reference value / reference profile and the actual value / actual profile of a parameter of the photovoltaic system are determined at periodically recurring times or in periodically recurring periods.
- the times / periods have comparable, typical and / or characteristic conditions. For example, instantaneous values of the parameters taken at the same time on different days are compared with each other for the lockout of the inverter.
- periodically recurring time profiles of the parameters can be compared on different days but in the same time period (eg, the respective progressions from 8:00 to 17:00). If the course of the parameters deviates too much from each other, the inverter is blocked.
- the time periods or periods recurring in each year can be used to compare the parameter values or parameter profiles. For example, the course recorded between 8:00 and 17:00 on July 1 can be compared to the course recorded on July 1 in a previous year between 8:00 and 17:00.
- the times are purely illustrative, and it is also the choice of another time or another period possible. In principle, however, the irradiation conditions in this choice should be in a similar range.
- the power or the daily power curve should be similar.
- July 1 can be used as the reference date for the comparison, but the actual comparison can be made on a day with similar irradiation conditions.
- the reference value used is the average value, difference, ratio or the integral of the at least one parameter of the photovoltaic system determined over a period of time.
- this variant of the method uses an average value or integral for blocking the inverter determined over a period of time.
- an identification of a component of the photovoltaic system can be used for the detection as a reference value and as an actual value.
- parameters can also be used, such as:
- a time when the maximum power is reached so that conclusions can be drawn from the day and calendar time about the orientation and / or the roof pitch of the modules.
- a number of parameters of the photovoltaic system are available for the method according to the invention, which can be used for a blockage of the inverter.
- an input voltage of the inverter, an input current of the inverter or an input power of the inverter can be measured. These values are usually already available in the inverter or can be easily determined, so that the invention can be put into practice with little effort.
- data of a photovoltaic module connected to the inverter can be used for this purpose, such as its open-circuit voltage (Uo) or its voltage at the operating point of maximum power (U MPP ).
- Uo open-circuit voltage
- U MPP voltage at the operating point of maximum power
- a ratio of the stated voltages can also be evaluated.
- these values are usually also available anyway, so that the invention can be put into practice with little effort.
- Io short-circuit current
- I MPP current at the maximum power point
- ⁇ ⁇ power at the maximum power point
- Other parameters related to a photovoltaic module are the number of photovoltaic modules connected to the inverter photovoltaic modules, the number of connected to the inverter strands of photovoltaic modules and the ratio and the course of the individual electrical parameters (U, I, P) to each other.
- Another property of the photovoltaic modules connected to the inverter is their inverse characteristic.
- a photovoltaic module is operated as a diode at night and subjected to a low current of a few mA.
- an inverter can be used are a measured with a separate sensor irradiation power (for example via a sensor box), a measured temperature sensor with a temperature of the photovoltaic modules and a length of the connected to the inverter electrical lines, for example, by Laufzeitmes- solution of a modulated pulse can be measured.
- a voltage of a network fed by the inverter can be used, provided that the photovoltaic modules is not the only source of energy in this network. This applies, for example, to public networks which very reliably provide a narrowly limited voltage. If this voltage can no longer be measured, there is either a power failure or the inverter has been disconnected from the mains. In order to prevent the inverter from locking too quickly, a corresponding waiting time can be provided, or other parameters are also included in the check. Furthermore, an instantaneous value, a temporal course, an integral, differences or an average value of the stated voltages, the named currents, the mentioned powers, the named ratio, the mentioned length, the characteristic curve or the mentioned temperature can be evaluated. For example, the recurring time histories of the input power of the inverter may be compared on different days but in the same time period (that is, in the period from 8:00 to 17:00, for example).
- the inverter is blocked.
- instantaneous values of said input power taken at the same time on different days may be compared for this purpose.
- the time periods or periods recurring in each year can be used to compare the parameter values or parameter profiles. For example, the course of the mentioned input power recorded between 8:00 and 17:00 on July 1 can be compared with the course of the mentioned input power recorded on 1 July in one of the past years between 8:00 and 17:00.
- the choice of the input power as a parameter as well as the time specifications are purely illustrative, and it is also the choice of another parameter, another time or another period possible.
- Further options for blocking an inverter are the evaluation of a switching state of a tamper contact, which triggers, for example, when opening the housing of the inverter or when lifting it from a mounting surface.
- an identification of a component of the photovoltaic system which is in permanent or temporary communication / communication with the inverter to be used for the detection as the reference value and as the actual value.
- Many devices have a unique identification in the form of a serial number or the like stored in a memory of the device concerned. For example, it can be exchanged over a data line or a data bus and used for said verification. If the actual identification does not match the reference identification, the inverter is disabled.
- the inverter may refer to the identification of a display and / or control unit connected to it.
- the parameters used are location information and / or ownership information and reference information stored about the inverter on the location and / or owner of the inverter with actual information about the location and / or owner of at least one installed in the photovoltaic system Component is compared.
- information about the location and / or owner of the inverter with the information about location and / or owner of another component of the photovoltaic system is compared and for the lock of Inverter used.
- the information about the location and / or owner of the inverter in the inverter itself and / or stored in a central database and the information about location and / or owner of said component of the solar system in this component itself and / or in a central database is stored.
- the advantage of locally stored information is that it can still be called by the inverter even if there is no connection to a database.
- a secured memory is provided for this purpose, which can not be manipulated by a thief of the inverter or only with considerable effort.
- the advantage of being stored in a central database Information is that it is out of the reach of a thief of the inverter, which makes it even harder to manipulate.
- information about the location and / or owner of the inverter is compared with the information about location and / or owner of another component of the photovoltaic system.
- a corresponding status message can also be output.
- the actual location and / or the actual owner can be output so that stolen and retrieved inverters can be assigned to the rightful owner.
- such an indication is also a clear information to a potential buyer of the stolen inverter, which is deterred by such a purchase.
- said information is automatically transmitted to the reference owner (ie the rightful owner).
- the inverter is connected to a specific remote display and / or control unit and the functional status of a communication connection between the inverter and the remote display and / or control unit is provided as a parameter of the photovoltaic system.
- a situation is encountered in a photovoltaic system in which the inverter exchanges data with a remote display and / or control unit, for example via wire, optically or by radio.
- This circumstance can be taken advantage of and check whether a communication link between the inverter and the remote display and / or control unit is upright or not. If this fails (especially over a longer period of time), it can be assumed that the inverter has been stolen. The inverter will be locked in succession.
- timer which is set to a predetermined period of time
- Control unit periodically, at shorter intervals than the said period, commands for resetting the timer transmitted.
- the remote display and / or control unit periodically sends commands for setting a timer in the inverter, which triggers a deactivation of the same when it expires. Due to the fact that the remote display and / or control unit regularly sends a command to set it again before the timer expires when the communication connection is upright, the inverter is not disabled during normal operation. If, however, the communication connection fails before the transmission of said command, the timer in the inverter will expire, whereupon it will be blocked.
- a locked inverter can be unlocked by entering or transmitting a key in or to the inverter again.
- the key can be stored on an RFID tag (Radio Frequency Identification), which is held to a reading device on the inverter when needed.
- This RFID tag is for example embedded in a card or else attached to or in a portable device of the photovoltaic system.
- a portable device may be, for example, a mobile display or a mobile control panel.
- the key may, for example, also be stored on NFC (Near Field Communication) mobile phones.
- the key can also be transmitted to the inverter using other techniques, for example via Bluetooth or infrared.
- the key can also be entered manually via a panel of the inverter.
- a lock of an inverter remains upright even if the reason for the lock has been eliminated and a locked inverter can be unlocked only by entering or transmitting a key in or to the inverter again.
- the inverter resumes its function automatically when the reason for the lock has been removed.
- the lock is automatically canceled when the inverter finds its "usual" environment again, but in the present variant of the method according to the invention, the inverter is only unlocked again when a corresponding key is presented is thus particularly effective.
- a key or a copy of the key is stored in a central database and this or this is transmitted to a requesting owner of the inverter or the inverter, if an authorization check of the requesting owner is successful.
- a (secure) central database can be avoided that the inverter can not be put into operation because of a missing key.
- the key may be handed to the user of the inverter. If he loses the key, he can nevertheless make a copy by requesting the database administrator (for example, the seller or the manufacturer of the inverter) receive. For example, it can be transmitted via a mobile radio network to a mobile telephone of the user of the inverter.
- a setting is checked which is assigned to the lock, and the lock is only executed if the setting permits it.
- the lock of the inverter is executed only in the presence of a corresponding setting.
- the lock function can therefore be switched on and off.
- an active lock is not canceled by changing the said setting.
- FIG. 1 shows a schematic overview of an inverter of a photovoltaic system.
- FIG. 1 a structure of a known inverter 1 is shown. Since the individual components or components and functions of inverters 1 are already known from the prior art, they will not be discussed in detail below.
- the inverter 1 has at least one intermediate circuit 3 and an output DC-AC converter 4, wherein an input DC-DC converter 2 is optional.
- a power source 5 or an energy generator is connected to the input DC-DC converter 2, which are preferably formed from one or more solar modules 6 connected in parallel and / or in series with one another.
- the inverter 1 and the solar modules 6 are also referred to as photovoltaic system or as PV system.
- the output of the inverter 1 or the output DC-AC converter 4 can be connected to a supply network 7, such as a public or private AC network or a multi-phase network, and / or with at least one electrical load 8, which is a load be.
- a consumer 8 is formed by an engine, refrigerator, radio, and so on. Likewise, the consumer 8 can also represent a home care.
- the individual components of the inverter 1, such as the input DC-DC converter 2, etc. may be connected to a control device 10 via a data bus 9.
- such an inverter 1 serves as a so-called grid-connected inverter 1, whose energy management is then optimized to feed as much energy into the grid 7 as possible.
- the consumers 8 are supplied via the supply network 7.
- a plurality of inverters 1 connected in parallel can also be used. As a result, more energy for operating the consumer 8 can be provided.
- This energy is supplied by the power source 5 in the form of a DC voltage, which is connected via two connecting lines 11, 12 with the inverter 1.
- the control device 10 or the regulator of the inverter 1 is formed, for example, by a microprocessor, microcontroller or computer. Via the control device 10, a corresponding control of the individual components of the inverter 1, such as the input DC-DC converter 2 or the output DC-AC converter 4, in particular the switching elements arranged therein, are made. In the control device 10 for this purpose, the individual control or control processes are stored by appropriate software programs and / or data or characteristics.
- control elements 13 are connected to the control device 10, by means of which the user can, for example, configure the inverter 1 and / or display and set operating states or parameters.
- the controls are connected for example via the data bus 9 or directly to the control device 10.
- Such controls 13 are arranged for example on a front of the inverter 1, so that an operation from the outside is possible.
- the controls 13 may also be arranged directly on assemblies and / or modules within the inverter 1.
- the inverter 1 comprises an output device 14 connected to and controlled by the control device 10 (for example, light-emitting diodes, a display and / or a loudspeaker).
- the inverter 1 is in the example shown in communication with an optional external display and / or control unit 15 and with an optional external database 16.
- the communication connection can be radio-based or wire-based.
- a method is now carried out in which a reference value / reference curve of at least one parameter of the photovoltaic system is compared with an actual value / actual curve of said parameter, and the inverter function of the inverter 1 is at least temporarily disabled when the deviation between said actual value / actual course and the reference value / reference curve exceeds a predetermined threshold.
- the inverter 1 thus comprises means for comparing a reference value / reference curve of at least one parameter of the photovoltaic system with an actual value / actual course of said parameter and means for at least temporary blocking of the inverter function of the inverter if the deviation between said actual Value / actual course and the reference value / reference course exceeds a predefinable threshold.
- the mentioned means can be formed for example by a part of the software of the control device 10.
- reference values / reference curves determined in the past are compared with currently determined actual values / actual progressions and used for the blockage of an inverter 1. In particular, periodically recurring times and / or periods are selected for the measured value acquisition.
- the measured values are recorded at the same time on different days or at the same time on the same days in different years. Accordingly, the determined actual values / actual progressions can be used as reference values / reference progressions after a comparison has been carried out for the subsequent comparison.
- instantaneous values or courses of an input voltage of the inverter 1, a voltage of the network 7 fed by the inverter 1, the open-circuit voltage of the photovoltaic modules 6 (Uo) connected to the inverter 1, the voltage of the photovoltaic modules connected to the inverter 1 can be used.
- Module 6 at the operating point of maximum power UMPP
- the ratio of said voltages Uo and UMPP an input current of the inverter 1
- IMPP power at the maximum power point
- PMPP maximum power operating point
- a radiant power measured, for example, with a separate sensor located in the area of the photovoltaic modules 6 and determining the power radiated by the sun
- Another possibility for the blocking of an inverter 1 is the evaluation of a switching state of a sabotage contact, which triggers, for example, when opening the housing of the inverter 1 or when lifting it from a mounting surface.
- an identification of a component 6, 13 of the photovoltaic system for the detection of a reference value and an actual value can be used.
- the display and / or control unit 15 has such identification, e.g. in the form of a serial number or similar. This is stored for example in a memory of the display / control unit 15.
- the actual identification can be transmitted to the inverter 1 via the communication connection and compared in the control device 10 with a reference identification stored therein. If the actual identification does not match the reference identification, the inverter 1 is disabled or deactivated.
- identifications of other parts of the system can also be used for the comparison, for example identifications of the photovoltaic modules 6, provided that they are set up for this purpose.
- the functional status of the communication connection between the inverter 1 and the remote display / control unit 15 can be used to block the inverter 1. If the
- the inverter function of the inverter 1 is generally deactivated after the expiration of a timer, which is set to a predeterminable period of time, so that short-term failures of the communication link or short-term Deviations between an actual value / actual course and a reference value / reference course are hidden.
- the remote display / control unit 15 periodically transmits commands for resetting the timer at shorter intervals than the stated time span. Due to the fact that the remote display and / or control unit 15 regularly sends a command to set it again before the timer expires when the communication connection is upright, the inverter is not disabled during normal operation. If, however, the communication connection fails before the transmission of the named command, the timer in the inverter 1 will expire, whereupon it will be blocked. Thus, the inverter 1 is essentially constantly updated via the communication connection, which components of the PV system have which status. Accordingly, this not only applies to the display and / or control unit 15, but for all components of the PV system such as data logger, string control, sensor box, gateway, router and / or power manager.
- said communication link is encrypted to make it difficult for a thief to spoof an upright communication link to the display / control unit 15 or make it impossible when in fact no communication link exists.
- the method is particularly effective if the display / control unit 15 is arranged in a secure environment from which it can not be stolen or only with considerable effort.
- the display / control unit 15 may be located in a locked and well secured house, whereas the inverter 1 may only be housed in an easily demolished shed, easily accessible open spaces, mounting racks, trackers, parking lots or the like.
- the inverter 1 can automatically resume its function when the reason for the lock has been removed. In concrete terms, this means that, when the lock is upright, a match between the actual value / actual course and a reference value / reference profile or actual identification and reference identification and / or an intact communication connection to the display / subunit unit 15 is detected.
- a locked inverter 1 can also be unlocked only by entering or transmitting a key in or to the inverter again. This ensures that only an authorized user can put the inverter 1 back into operation.
- the key may be stored on a RFID tag (Radio Frequency Identification) which is held on the inverter 1 as needed by a reading device.
- RFID tag Radio Frequency Identification
- This RFID tag for example, embedded in a card or even be attached to or in a portable device of the photovoltaic system, for example on the display / control unit 15.
- the key can also via the communication link between display / control unit 15 and Inverter 1 are transmitted.
- the key can also be entered manually via the control buttons 13 of the inverter 1 or on the control panel of the display / control unit 15. It would also be possible to transfer the key from a mobile phone to the inverter 1 directly or via the display / control unit 15 there.
- the key from the database 16 to the inverter 1, the display / S teuermati 15 or a mobile phone is sent when the user of the photovoltaic system is not or no longer in the possession of the key.
- the key or a copy of the key is stored in the central database 16 and this is transmitted upon successful authorization verification of the requesting owner.
- a setting is checked, which is assigned to the lock, and the lock is executed only if the setting allows this.
- the lock of the inverter is executed only in the presence of a corresponding setting.
- the blocking function can thus be switched on and off, for example via the control buttons 13 of the inverter 1 or on the control panel of the display / control unit 15.
- an active lock by changing the said setting is not canceled.
- a status message is output, which is associated with a theft of the inverter 1.
- this status message can be output on the output unit 14 of the inverter 1 and / or on a display of the display / control unit 15 and / or on the database 16 or other stations, for example to a mobile telephone of the owner of the inverter 1 or to the police be transmitted.
- this message is output directly on the output unit 14 of the inverter 1, the inverter is practically unsalable since a potential buyer is immediately alerted to the presence of stolen goods.
- a message is transmitted from the inverter 1 to the display / control unit 15 and forwarded from there to other locations, such as the database 16. This prevents a thief from frustrating the sending of the message in question.
- the status message may include reference information stored in the inverter 1 about the location and / or owner of the inverter 1 on the output unit 14.
- reference information stored in the inverter 1 about the location and / or owner of the inverter 1 on the output unit 14.
- location information and / or ownership information can be used as parameter at all, and reference information stored about the inverter 1 about the location and / or owner of the inverter 1 with actual information about location and / or owner of at least one in the photovoltaic system built component, such as the display Z control unit 15 are compared.
- This variant is very similar to the previously described variant, in which an identification of a component installed in the photovoltaic system is used for the deactivation of the inverter. In place of identification occurs in this variant, however, the location or ownership information. In contrast to the variant explained above, however, the inverter 1 does not need any information about the display / control unit 15, ie its identification.
- the information about location and / or owner of the inverter 1 may be stored in the inverter 1 itself and / or in the central database 16.
- the information about the location and / or owner of the display / control unit 15 may be stored in the display / control unit 15 itself and / or in the central database 16.
- the advantage of locally stored information is that it is still available within the photovoltaic system even if there is no connection to the database 16.
- the advantage of the information stored in the central database 16 is that it is usually out of the reach of a thief.
- a reference information about location and / or owner of the inverter 1 is stored and checked after and / or during a lock, if the reference information with information about location and / or owner at least one in the Photovoltaic system installed component (ie, for example, again the display / S teuer mich 15) is compared. If the comparison is negative, the information about location and / or owner associated with the display / control unit 15 is output. In this way, it is possible to find out the new location of the inverter 1 if it was stolen and put back into service in another photovoltaic system. As a result, it is comparatively little effort possible to make the inverter 1 safe and hand over to the rightful owner again.
- the information about location and / or owner is preferably transmitted to the database 16, to a device of the rightful owner and / or to the police.
- a warning can be output after a deviation between an actual value / actual curve and a reference value / reference curve is detected, but before the inverter 1 is blocked.
- the user of the inverter 1 can be made aware of an imminent lock and take appropriate countermeasures to prevent unnecessary lock.
- the inverter 1 may assume the following states with respect to the presented method:
- Locked / Locked (the protection function is activated and the inverter 1 is locked because a deviation between an actual value / actual course and a reference value / reference curve has been detected and an assigned timer has also expired.
- a message about an unsecured or secured state can be issued.
- an active protection function can be indicated by a flashing LED on the inverter 1.
- an environment of the inverter can be read anew, that is, the new reference values / reference curves are detected, for example, if an authorized change has been made to the photovoltaic system.
- the input of a key is necessary in order to prevent unauthorized detection of the reference values / reference progressions.
- the proposed method does not necessarily have to run in the inverter 1, although this has some advantages. It would also be conceivable that the entire process presented or even parts of it is / are carried out in another component of the photovoltaic system or even in a remote superordinate control device. For example, the comparison of a reference value / reference curve with an actual value / actual curve in one of the databases 16 could be localized. adjacent control device are executed. From there, appropriate commands can be issued to the components of the photovoltaic system or obtained from these messages. For example, the Inverter 1 lock command could be issued from there.
- the monitoring of the functional status of the communication connection between the inverter 1 and the remote display Z control unit 15 for the blocking of the inverter 1 is (also) carried out in the display / control unit 15.
- the inverter 1 could (also) periodically send out commands for setting a timer located in the display / control unit 15. But if the communication connection before the transmission of said command, then the timer runs in the display / control unit 15 from which they can issue / send out corresponding messages.
- the mentioned review runs both in the inverter 1 and in the display / control unit 15, so that both the inverter 1 and the display / control unit 15 can set self-sufficient and without existing communication connection between the two measures.
- the proposed method thus achieves that the inverter 1 can only be operated in a reference environment and removal of the inverter results in a block thereof.
- multiple checks are required before a lock is issued. That is, the inverter 1 is disabled only when, for example, three out of five checks were wrong. Thus, it is excluded that in the case of a planned failure of a component - for example, by a service - a blockage is performed.
- communication connections can be interrupted, whereby a check fails.
- allegedly erroneous results of checks are taken into account, so that the inverter 1 can continue to feed. For a thief, such an inverter 1 is worthless because it can not be unlocked without further notice.
- the exemplary embodiments show possible embodiments of a photovoltaic system according to the invention or of an inverter 1 according to the invention, it being noted at this point that the invention does not relate to the specifically illustrated embodiment. Variants of the same or the same is limited, but rather also various combinations of the individual embodiments are mutually possible and this possibility of variation due to the doctrine of technical action by objective invention in the skill of those working in this technical field. So are all conceivable embodiments, which are possible by combinations of individual details of the illustrated and described embodiment variant, includes the scope of protection.
- a photovoltaic system or an inverter 1 can in reality also comprise more or fewer components than illustrated.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112013002902.2T DE112013002902A5 (de) | 2012-06-12 | 2013-06-10 | Sperrung des Wechselrichters einer Photovoltaik-Anlage bei Diebstahl |
| US14/407,168 US20150162748A1 (en) | 2012-06-12 | 2013-06-10 | Disabling the inverter of a photovoltaic installation in the event of theft |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA676/2012 | 2012-06-12 | ||
| ATA676/2012A AT512993B1 (de) | 2012-06-12 | 2012-06-12 | Wechselrichter einer Photovoltaik-Anlage und Verfahren zum Betrieb desselben |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013185158A1 true WO2013185158A1 (de) | 2013-12-19 |
Family
ID=48808125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2013/050116 Ceased WO2013185158A1 (de) | 2012-06-12 | 2013-06-10 | Sperrung des wechselrichters einer photovoltaik-anlage bei diebstahl |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20150162748A1 (de) |
| AT (1) | AT512993B1 (de) |
| DE (1) | DE112013002902A5 (de) |
| WO (1) | WO2013185158A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018114054A1 (de) * | 2018-06-12 | 2019-12-12 | Sma Solar Technology Ag | Verfahren zum Schutz einer Anlagenkomponente vor Diebstahl, Anlagenkomponente für eine Energieerzeugungsanlage und Sendevorrichtung |
| DE102018127130B4 (de) * | 2018-10-30 | 2025-05-15 | Sma Solar Technology Ag | Wechselrichter mit mindestens zwei Gleichspannungswandlern |
| CN113131863B (zh) * | 2019-12-31 | 2023-03-28 | 华为数字能源技术有限公司 | 一种光伏系统、光伏组件及其防盗方法 |
| CN111555716B (zh) * | 2020-03-13 | 2023-07-28 | 远景智能国际私人投资有限公司 | 光伏阵列工作状态的确定方法、装置、设备及存储介质 |
| JP7727292B1 (ja) * | 2025-04-09 | 2025-08-21 | ネクストエンジニアリング株式会社 | 太陽光発電設備における直流ケーブル監視システム |
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| FR2853469A1 (fr) * | 2003-04-02 | 2004-10-08 | Electricite De France | Panneau photovoltaique securise contre le vol |
| DE202008012345U1 (de) * | 2008-08-22 | 2009-03-12 | EPROTECH Reimann e.K. Jürgen Reimann | Vorrichtung zur Überwachung einzelner Photovoltaikmodule einer Photovoltaikanlage |
| WO2009098729A1 (en) * | 2008-02-08 | 2009-08-13 | Angelo Merola | Antitheft module suitable for the operational control of a photovoltaic panel, photovoltaic panel integrating such a module, and antitheft system for photovoltaic panels plant |
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| FR2951574A1 (fr) * | 2009-10-20 | 2011-04-22 | Ubac Dev | Systeme anti-vol de panneaux solaires utilisant un systeme d'alarme via le reseau d'echange de puissance |
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| DE19837862C2 (de) * | 1998-08-20 | 2002-11-14 | Solarc Innovative Solarprodukt | Solarmodul |
| GB2348573A (en) * | 1999-04-01 | 2000-10-04 | Motorola Ltd | Location dependent disablement of apparatus |
| JP2002142462A (ja) * | 2000-10-30 | 2002-05-17 | Canon Inc | 電力変換装置およびその盗難防止方法 |
| US9336393B2 (en) * | 2003-08-23 | 2016-05-10 | Softex Incorporated | System and method for protecting files stored on an electronic device |
| DE10358589A1 (de) * | 2003-12-12 | 2005-07-07 | Volkswagen Ag | Vorrichtung und Verfahren zum Betrieb eines Verbrauchers durch ein Solarmodul |
| IT1391748B1 (it) * | 2008-08-29 | 2012-01-27 | Bames Srl | Dispositivo di controllo e segnalamento per moduli fotovoltaici |
| DE102008062659A1 (de) * | 2008-12-16 | 2010-06-17 | Institut für Solare Energieversorgungstechnik - Verein an der Universität Gesamthochschule Kassel | Vorrichtung zur Diebstahl-Überwachung des Solargenerators einer PV-Anlage |
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| WO2011130733A1 (en) * | 2010-04-16 | 2011-10-20 | Enphase Energy, Inc. | Method and apparatus for indicating a disconnection within a distributed generator |
| DE102010036816A1 (de) * | 2010-08-03 | 2012-02-09 | Newtos Ag | Verfahren und Vorrichtung zur Überwachung und Steuerung einer Photovoltaik-Anlage |
-
2012
- 2012-06-12 AT ATA676/2012A patent/AT512993B1/de not_active IP Right Cessation
-
2013
- 2013-06-10 DE DE112013002902.2T patent/DE112013002902A5/de not_active Withdrawn
- 2013-06-10 US US14/407,168 patent/US20150162748A1/en not_active Abandoned
- 2013-06-10 WO PCT/AT2013/050116 patent/WO2013185158A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2853469A1 (fr) * | 2003-04-02 | 2004-10-08 | Electricite De France | Panneau photovoltaique securise contre le vol |
| WO2009098729A1 (en) * | 2008-02-08 | 2009-08-13 | Angelo Merola | Antitheft module suitable for the operational control of a photovoltaic panel, photovoltaic panel integrating such a module, and antitheft system for photovoltaic panels plant |
| DE202008012345U1 (de) * | 2008-08-22 | 2009-03-12 | EPROTECH Reimann e.K. Jürgen Reimann | Vorrichtung zur Überwachung einzelner Photovoltaikmodule einer Photovoltaikanlage |
| AT508834A1 (de) | 2009-10-09 | 2011-04-15 | Fronius Int Gmbh | Verfahren und vorrichtung zur fehlererkennung in einer photovoltaik-anlage |
| FR2951574A1 (fr) * | 2009-10-20 | 2011-04-22 | Ubac Dev | Systeme anti-vol de panneaux solaires utilisant un systeme d'alarme via le reseau d'echange de puissance |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112013002902A5 (de) | 2015-03-19 |
| AT512993A1 (de) | 2013-12-15 |
| AT512993B1 (de) | 2017-08-15 |
| US20150162748A1 (en) | 2015-06-11 |
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