EP3284153A1 - Erkennen einer durch einen tapchanger erzeugten elektrischen diskontinuität basierend auf einer netzqualitätscharakteristik - Google Patents
Erkennen einer durch einen tapchanger erzeugten elektrischen diskontinuität basierend auf einer netzqualitätscharakteristikInfo
- Publication number
- EP3284153A1 EP3284153A1 EP16705762.9A EP16705762A EP3284153A1 EP 3284153 A1 EP3284153 A1 EP 3284153A1 EP 16705762 A EP16705762 A EP 16705762A EP 3284153 A1 EP3284153 A1 EP 3284153A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical
- power
- end user
- voltage
- power grid
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1878—Arrangements for adjusting, eliminating or compensating reactive power in networks using tap changing or phase shifting transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
Definitions
- the invention relates to a device and a method for detecting a by a Tapchanger in an electrical path between a
- An energy supply network has the task of keeping a mains voltage supplied by it constant for its end users in a corridor of typically + 6% to -10% (depending on the standard, sometimes even ⁇ 10%). This is true in a simple way of looking at the typical single-phase
- An energy supply network accomplishes this through various measures. These measures include as constant a supply voltage as possible from its suppliers, a low impedance in its low voltage network through internal regulation or limiting the maximum consumption in a low voltage reference train. These measures often occur in combination or are supplemented by additional measures.
- One of these measures is providing a tapchanger. This is a transformer (usually in the medium-voltage network or in large transitions from medium voltage to low voltage), which for a primary coil (or analog for a secondary coil) has multiple winding outlets.
- a measuring arrangement in combination with a control switches the taps. Tapchangers generate electrical discontinuities during switching, which can be smeared or distorted by other influences in a power supply network.
- an apparatus for detecting an electrical discontinuity generated by a tap changer in particular, a tap changer with transformer
- the device comprising a tap changer (in particular, a tap changer with transformer)
- an indicative sensor signal and having a recognizer configured to detect, for example, the presence of an electrical discontinuity based on the sensed sensor signal and to further detect based on the sensed sensor signal whether (or not) it is an electrical discontinuity created by the Tapchanger (or if the electrical discontinuity has another cause).
- an end user device comprising (a) a
- Power generating unit and / or a power consumption unit and / or Energy buffer unit ; and (b) an apparatus as described above for detecting, by a tapchanger, an electrical path between a power supply network and an electrical network
- an arrangement comprising a power grid, at least one end user electrical device, a tap changer in the electrical path between the power grid and the at least one end user electrical device, and a device having the above described ones
- Endive user indicative sensor signal is detected and is detected based on the detected sensor signal, whether an electrical discontinuity was generated by the Tapchanger.
- An exemplary embodiment of the present invention stores a program for recognizing an electrical discontinuity generated by a tapchanger between a power supply network and an electrical end user device, which program, if executed by one or more processors, has the above-described method steps or
- a software program for example formed by one or more computer program elements, which optionally also distributed locally and / or with communicatively communicating with each other) according to an embodiment of the present invention for recognizing a by a Tapchanger between a power grid and a
- electrical discontinuity generated comprises or performs the above-described process steps when carried by one or more processors of the device
- Embodiments of the present invention can be realized both by means of a computer program, that is to say a software, and by means of one or more special electrical circuits, that is to say in hardware, or in any hybrid form, that is to say by means of software components and hardware components.
- Tapchanger in particular an arrangement of a tap changer and a transformer (in particular a power transformer) understood, wherein the tap changer for setting a transmission ratio of
- the winding of the transformer at its upper or lower voltage side may for this purpose have a main winding and a tap winding with a plurality of taps, each of which can be guided to the tap changer.
- a tapchanger can be referred to as electronic component, the outlets on the
- a Tapchanger can thus in particular one
- Winding portion has.
- the transformer function can be adjusted continuously or stepped.
- Tapchanger typically be designed three-phase, d .h. for all three phases of a distribution network.
- the term "electrical discontinuity" can in particular mean a sudden change in one between the energy supply network and the at least one
- End user device adjacent electrical signal (in particular, a sudden change in a supply voltage provided by the power supply network) are understood that for the electrical
- a corresponding signal can be
- Voltage signal or a current signal that propagates as energy via a line between power grid and electrical end user device can experience distortions up to the location of the sensor. If a corresponding jump or a corresponding kink is detected over the course of time of this electrical signal
- the cause of the electrical discontinuity is a different one (for example, a temporary energy reduction of the
- Discontinuity have a different spectral characteristic (for example, a short-term peak, a wave-like perturbation or a permanent artifact in the signal).
- network quality characteristic can be understood as a characteristic relating to a quality of the energy supply network which prevailed, currently prevails and / or prevails in the energy supply network in the past Designate signals, that on the power grid to one of the
- End user device (or when feeding energy into the
- a high power quality characteristic may be due to a constant or steady state of this signal (for example, a
- Sensory detection or detection of such a signal can be determined indicative of the power quality characteristic measurement parameters.
- Sensory detection or detection of such a signal can be determined indicative of the power quality characteristic measurement parameters.
- End user equipment in particular to the energy supply network
- the at least one energy consumption unit in particular an electrical load, for example an electric heater
- the power generation unit which can supply a power unit of an end user device with electric power and / or can feed this power into the power grid , for example, a solar system
- the power grid for example, a solar system
- Caching may, for example, a loadable and dischargeable battery) may have.
- Different end user devices can be arranged in a decentralized manner to one another and to the energy supply network. Examples of end user facilities are building parts (for example, an apartment), a building, a private user, an industrial enterprise, etc.
- a system is
- Power supply network can detect sensory and through
- Signal evaluation can assign whether such a signal artifact is caused by a switching operation of a tapchanger or has another cause.
- a system can classify which cause has a detected electrical discontinuity on a power supply network or has the highest probability.
- the control of the power management at the electrical end user device can use this information advantageously, since in particular harmless
- Power supply network can be distinguished. This ensures that an end user device can access a special, through
- Signal analysis identified disorder can respond appropriately.
- the control response of one or more electronic components of the end user device to such electrical discontinuity can be more precisely made.
- Detection device be configured based on the detected sensor signal to make a distinction between a generated by the Tapchanger electrical discontinuity on the one hand and one by one of a
- Energy supply network is conditional, allows a precisely associated
- Control of the components of the energy network For example, a Control device on a harmless tapchanger electrical discontinuity out no adaptation of the control of a
- a control device can adapt the control of the end user device accordingly: to an overloading of the system leading to the discontinuity
- Power supply network can be reacted, for example, with a temporary reduction of energy, which is used to supply a
- Energy consumption unit of the end user device is taken from the power grid.
- an overload can also be a
- Intermediate energy storage device for example, a rechargeable battery of the end user device are at least partially discharged to the thus released energy to support the power supply network in the
- Feed in energy supply network On a leading to the discontinuity under load of the power grid can be reacted, for example, with a temporary increase in energy, which is taken to supply the end user device to the power grid. For example, a temporary energy storage device may then be precautionarily charged to assist the utility grid in reducing overcapacity.
- the recognition device can be set up to distinguish between an electrical discontinuity generated by the electrical end user device (in particular an electrical load) and an electrical network impedance generated by a varying network impedance.
- expected and known electrical discontinuities occurring in switching the tapchanger will be considered.
- the expected and known electrical discontinuities may in particular depend on the ratio of the number of turns which are active before switching or after switching of the tapchanger.
- Net quality characteristic indicative sensor signal to recognize.
- the corresponding signals can be subjected to a pattern analysis which (among other things based on empirical data) is between the different ones
- Recognizing be set up a generated by the Tapchanger electrical discontinuity by means of an analysis of the for the
- Net quality characteristic indicative sensor signal to detect with methods of artificial intelligence. It is possible, alternatively or in addition to pattern recognition, to use other methods of artificial intelligence for the Signal evaluation and classification, in particular neural networks, fuzzy logic, heuristic forecasts, etc.
- Recognition device configured to perform the recognition based on at least one analysis from a group consisting of a
- Recognition device to be set up, the recognition based on a
- Network quality characteristic should be indicative of what is currently available from the energy supply network and / or affordable in the foreseeable future
- Power quality characteristic for example, a voltage value or a current value
- an excess energy supply can lead to increased voltage and / or current values compared to a setpoint value.
- Power Quality Characteristics an electrical voltage value provided by the energy supply network and / or an electric current value resulting from the power supply and / or a crest factor of the supply provided by the energy supply network and / or at least one particular discontinuous voltage event in the electrical voltage provided by the energy supply network and / or a power provided by the power grid and / or energy and / or flicker events provided by the power grid in the power supply network signal and / or at least one of the harmonics or interharmonics of the electrical or electrical power provided by the power grid and / or a ripple control signal (wherein the so-called ripple control) for remote control of electricity consumers by
- Impedance value represent the power quality characteristic.
- the detection of the power quality characteristic by a Measurement of a frequency dependence of the impedance done.
- Frequency dependency of the impedance allows a determination or estimation of how and what communication is possible over mains supply lines and / or which disturbance (for example, measurement of attenuation of
- the detection of the power quality characteristic can be carried out by measuring the impedance for determining an internal resistance of the power supply network. This will ensure, for example, that provision is made in the context of the end-user side
- the detection of the power quality characteristic may also include a measurement of a time characteristic of impedance (in particular source impedance) and nominal voltage. This allows a concrete statement about a local network utilization status.
- Each of the mentioned forms of network impedance measurement may be used to dynamically estimate the current source voltage, parallel load and internal impedance of the network
- Recognizing be configured to perform the detection based on at least one time derivative, in particular the first derivative and / or the second derivative, the at least one detected network quality characteristic. It has been found that analysis of the slope and / or curvature behavior of the power quality characteristic (especially a supply voltage) over time enables a particularly sensitive analysis of electrical discontinuities caused by tap changer switching or other disturbances. Also is the Analysis of the first and / or second derivative of the power quality signal for the distinction between an electrical discontinuity based on a tap changer switch and an electrical discontinuity due to another cause (in particular caused by an electrical (in particular foreign, ie beyond the influence of the end user) electrical End user device or another
- Detection can be improved.
- Recognizing be configured to detect based on the detected sensor signal generating a voltage jump as an electrical discontinuity.
- the magnitude of such a voltage jump ie, end voltage minus initial voltage
- the device may include a controller configured to control power management of the end user device or other electronic component based on a result of the detection.
- energy management that is the allocation of energy from the
- Energy management can be carried out in an efficient and effective manner.
- the energy management of a building or part of a building can be considered End user device based on the identification of the electrical
- the device may be on a low-voltage side (in particular the secondary side) of a
- Transformers of Tapchangers be arranged.
- the transformer can be used in particular as a medium-voltage transformer
- Power supply network and electrical end user device may be arranged.
- the primary side of the transformer can then be arranged on the power supply side, the secondary side end user device side.
- a lower voltage of, for example, between 100 V and 450 V, in particular single-phase 230 V / concatenated 400 V in Europe and correspondingly 110 V (single-phase) / 190 V (concatenated) in the USA
- a lower voltage can prevail than on the side of the energy supply network .
- the tap changer may comprise a transformer having a primary coil and a secondary coil, wherein on one of the coils (i.e., on the primary coil or on the secondary coil) means for in particular stepwise changing one for a
- This transformer can typically be realized in one or three phases.
- the individual switching stages of the transformer can be equidistant or can
- Switching distance can then draw a conclusion on the operation of Tapchangers and the cause of an electrical discontinuity.
- the arrangement may comprise at least one further electrical end user device, which is connected to the power supply network and their electrical properties the device may be unknown.
- the device can also without detailed knowledge of other details of the coupling of the
- the detection and detection may be performed in a low voltage area of the power grid, in particular at an end user.
- Low-voltage range can be understood that area of a power supply network in which a useful signal already to a degree
- a power transmission between the power grid and an end user based on the result (in particular by means of the above
- Energy consumption device for example, the electric
- Endnutzer a floor heating of a building
- Endnutzers be at least temporarily throttled or reduced to stabilize the heavily loaded power grid or support.
- an energy generating device for example a solar system or a wind turbine
- the end user can be fed into the energy supply network in order to relieve the energy supply network.
- End user at least one energy device and / or at least one power generation device and / or at least one
- Figure 1 shows an arrangement for detecting an electrical discontinuity generated by a tapchanger in an electrical path between a power supply network and an electrical end user device according to an exemplary embodiment of the invention.
- FIG. 2 shows a tapchanger of the arrangement according to FIG. 1.
- the voltages shown are exemplary.
- the Tapchanger is shown for simplicity only in single phase.
- FIG. 3 shows an arrangement for acquiring impedance information as a power quality characteristic in an electric path between one
- FIG. 4 and FIG. 5 show further circuits for detecting
- a sensor for identifying signal artifacts generated specifically by a tapchanger in the form of electrical discontinuities.
- one (or more in time sequence) power quality measurement (s) or an extended impedance measurement (also here preferably several in time sequence) is or will be performed. From these measurements there are enough
- the sub-mechanisms that can be used for the sensor system may include one or more of the following measures:
- Source impedance of the low voltage network results.
- Source impedance analog it is possible according to a further exemplary embodiment of the invention to convert a voltage jump measured at the end user terminal to the equivalent voltage jump at the feed point (in particular harnesszurechen).
- Supply network are the voltage jumps generated by different Windungsab Beatles different, even if their similarity
- Switching characteristics over time can be high. Through a learning process of the sensor (for example, collecting historical data and interpreting it), it is possible to do those in the real system To characterize voltage jumps in their height and type and to feed back this result for optimization into the decision process.
- the Tapchanger switch with a known and mostly predictable parallel (with symmetrical end user load) switching all three phases. This switching symmetry can be recognized and used as input in the multi-factor decision model.
- the method for recognizing tapchanger jumps may be part of a
- Energy control device that controls the purchase and / or the return of energy at the end user. This controller can be additional
- the result of the sensor can according to an exemplary
- End users in the same geographical low-voltage distribution segment for example, all participants of a virtual power plant, which on the same low-voltage supply segment are arranged.
- Different forms of communication can be used (for example, electronic wireline
- Bus systems such as Ethernet, LON, EIB / KNX, etc., or even wireless communication (for example, Bluetooth, WIFI, WLAN, etc.) or forms of wired transmission via supply lines (for
- Example Powerline technologies according to ISO / IEC 14908, or private protocols, as from SMA).
- a device according to an exemplary
- the device can be designed so that a mutual influence takes place to the further advantage of the power supply network.
- a device may also be integrated (eg, not local) or implemented as a sub-component in an intelligent control system.
- a device for detecting voltage jumps generated by tapchangers is on the secondary side of a correspondingly controlled transformer
- the device may be installed in a low voltage network or at the end user.
- the device can be used for (for example, directly) autonomous and / or autonomous control of end consumers and / or decentralized feed devices.
- such a device may have various processing and / or controlling
- the device can be installed in parallel to other consumers whose connection values are unknown.
- the device may be designed for both single-phase and multi-phase operation. The present For the sake of simplicity, description primarily focuses on single-phase systems.
- FIG. 1 shows an arrangement 150 for identifying or identifying one by a tapchanger 102 in an electrical path between one
- Power grid 104 and electrical end user devices 106, 120 generate voltage discontinuity as an electrical discontinuity according to an exemplary embodiment of the invention.
- the assembly 150 is formed by the power supply network 104 for supplying electrical energy to connected loads, a plurality of electrical end user devices 106, 120 connected thereto, the tap changer 102 (ie, a step-up transformer switch, see FIG. 2) between the power grid 104 and the electrical end user devices 106, 120 and devices 100 for detecting an electrical discontinuity generated by the tap changer 102.
- the tap changer 102 ie, a step-up transformer switch, see FIG. 2
- End user device 106, 120 associated with its own device 100.
- a device 100 it is possible for a device 100 to be shared with a plurality of end user devices 106, 120. According to Figure 1 are the
- the detection and detection is carried out in both devices 100 in each case in a low-voltage region of the power supply network 104, i. E. at the position of the respective end user device 106, 120.
- the device 100 has a sensor device 108, which is set up for a power quality characteristic between the
- the Power supply network 104 and the electrical end user device 106 to detect indicative sensor signal.
- the sensor device 108 may be designed, for example, as a voltmeter according to FIG. 1, which detects a time characteristic of the supply voltage on a power line 190. The measured supply voltage is therefore in the embodiment shown, the addressed power quality characteristic.
- the apparatus 100 includes a recognizer 110 (eg, a processor or a portion of a processor) that is remote from the
- Detector 110 evaluates the sensor signal. This evaluation may also include the one-time and / or two-time derivative of the sensor signal after the time in order to include the temporal slope and / or curvature behavior of the supply voltage for further refinement in the evaluation can. As a result, certain signal characteristics can be made more visible than in the sole evaluation of the recorded
- the recognizer 110 Based on the sensed sensor signal, the recognizer 110 identifies, using pattern recognition and / or artificial intelligence methods, and if necessary incorporating empirical data, whether the detected voltage jump was generated by a tapchanger 102 switching operation or has other causes. It is also possible for impedance analysis to be included in this classification analysis to clarify the cause of the electrical discontinuity, which can also be detected as a network quality characteristic
- Primary coil 202 can be switched on or off, resulting in
- Analysis criteria preferably a combination of several of the mentioned analysis criteria, can be decided with high reliability as to whether a detected electrical discontinuity is due to the tap changer 102 or has another cause.
- Power grid 104 which may be due to a current bottleneck in the power supply, for example.
- the Power supply network 104 is powered by a connected wind turbine and currently calm, so the low supply of energy can lead to such a bottleneck in the power supply, which can also be expressed by a reduced supply voltage amplitude.
- the recognizer 110 may indicate to the recognizer 110
- Controller 112 (eg, a processor or a portion of a processor) directs control of end user devices 106 and 120, respectively
- the detected voltage jump is caused merely by a switching operation of the tapchanger 102, then it is at most one for the
- Control device 112 negligible interference, for example, does not make it necessary to adjust the control of the associated end user device 106 and 120, respectively. If, on the other hand, the detected voltage jump is triggered by a temporarily reduced energy supply capacity of the energy supply network 104, then it may be necessary for the respective ones to be triggered
- End-user device 106 or 120 associated control device 112 adapts its control characteristics, as will be described below:
- control device 112 assigned to the left-hand device 100 according to FIG. 1 is responsible for a
- the controller 112 may reduce the amount of energy that the end user device 106 designed as a power consumption unit (for example, underfloor heating of a building) extracts from the energy supply network 104. For example, while the scarce power supply capacity of the utility grid 104 is halted, the controller 112 may reduce the amount of energy that the end user device 106 designed as a power consumption unit (for example, underfloor heating of a building) extracts from the energy supply network 104. For example, while the scarce power supply capacity of the utility grid 104 is halted, the controller 112 may reduce the amount of energy that the
- End user device 106 can refer to the power grid 104.
- the power supply network 104 is stabilized and also for the benefit of the end user devices 106, 120 a collapse of
- the controller 112 shown on the left according to FIG. 1 can supply the end user device 106 again with a normal, again increased amount of energy.
- control device 112 assigned to the device 100 according to FIG. 1 is responsible for controlling an amount of energy which the end user device 120 designed as a power generation unit (for example a solar system) or energy buffer device (for example a rechargeable battery) has
- Power supply network 104 feeds. For example, while the scarce power supply capacity of the utility grid 104 is halted, the controller 112 may increase the amount of energy that the
- End user device 120 feeds into the power grid 104.
- the energy supply network 104 is stabilized and also for the benefit of the end user devices 106, 120 a collapse of the energy supply is avoided.
- the arrangement 150 at least one power generating unit and / or at least one energy consumption unit and / or at least one
- FIG. 1 shows an arrangement 150 in which the tap changer 102 is arranged between the energy supply network 104 on the one hand and a plurality of electrical consumers in the form of the end user devices 106, 120 on the other hand.
- Each of the electrical end user devices 106, 120 is autonomously controlled by an associated device 100, without the respective devices 100 having to know each other's respective electrical properties.
- the respective sensor device 108 measures the power quality characteristic near the associated electrical
- Control means 112 which controls the power management of the electric end user equipment 106, 120 in accordance with the result of the Erkennanalysis.
- FIG. 2 shows a tapchanger 102 as it can be used in the arrangement 150 according to FIG.
- Tapchanger 102 includes a transformer 200 having a
- the Low-voltage or secondary side of Tapchangers 102 can be arranged or interconnected on the power supply side.
- the Low-voltage or secondary side of Tapchangers 102 can be arranged or interconnected on the power supply side.
- Endnereiner Koreans press be arranged or interconnected.
- Voltage jumps are determined when switching the Tapchangers 102 by the size of the steps on the device 206.
- Detecting device 110 be known and used in determining the origin of a voltage jump as electrical discontinuity advantageous as a reliable allocation criterion of a voltage jump to the Tapchanger 102.
- the drawn Tapchanger 102 is exemplary - in other possible embodiments, Tapchanger with 7 to 20
- Embodiments of the invention described which refers to the implementation of an impedance measurement and an analysis of the temporal variance in
- Measurement of Impedance as a Function of Frequency This makes it possible to estimate how and what communication via the mains supply lines is possible or what disturbances (for example, measuring the attenuation of harmonic harmonics) of the spectrum) in the local system.
- Source impedance and rated voltage in their temporal change are determined and recorded, and the impedance with different measuring loads (R measurement) is determined.
- R measurement the impedance with different measuring loads
- FIG. 3 shows an arrangement for acquiring impedance information as a power quality characteristic in an electrical path between
- Power supply network 104 and one (or more) electrical
- End user device (s) 106, 120 according to an exemplary
- Embodiment of the invention The manner in which further consumers can be switched on is shown in a diagram 310, to which a simplified equivalent circuit 320 is assigned.
- circuit block 330 With reference to circuit block 330, it should also be mentioned that only one of, for example, three phases is shown there, so that, if appropriate, a plurality of circuit blocks 330 would have to be arranged in parallel.
- Transformer 200 which accomplishes the transition from medium voltage grid 302 to low voltage grid 304, becomes ideal
- FIG. 4 thus shows a supply circuit 400 with ideal source Uo, internal resistance Z s and end-user device 106, 120 (but still without parallel load resistors).
- the measuring resistor Z m shown here can be exemplified by the locally existing
- End consumer resistors 106, 120 are formed.
- a separate measuring device can be used for impedance measurement.
- a measuring device with variable measuring resistors is suitable
- Figure 5 shows an alternative to Figure 4 circuit 500. In this case
- Measuring method is not the power supply network loaded with the measuring resistor Zm, but fed back via an energy supply system (eg photovoltaic system, battery or storage capacitor) power into the power grid and due to known (ideally variable)
- an energy supply system eg photovoltaic system, battery or storage capacitor
- a m Self-impedance
- FIG. 6 shows a diagram 600, in which a voltage-current characteristic 606 is shown. Along an abscissa 602 the current I is plotted, whereas along an ordinate 604 the voltage U is plotted.
- Ui_ corresponds to the voltage of the ideal source.
- Ik corresponds to one
- Measuring resistor can interpolate the curved curve 700 in its important segments and so the voltage at the transformer 200 (Uo, has been simplified with an ideal source as Us in Figure 3), Z s and the sum of the parallel load impedances Zi, Z2 and Z2 ' (Simplified as a Zander)
- the measuring voltage Um shown in FIG. 7 may be equal to the nominal voltage of the network.
- FIG. 5 illustrates a measuring variant in which energy is not fed back with a measuring resistor, but energy is fed back by means of a foreign source with known internal resistance.
- T and T 2 are each an average time between two changes in resistance).
- End user device or a subset of the end user devices refers understood. In particular, this can also be understood to mean only an amount of energy relevant to a local load on the distribution structure.
- transmitted energy can either generate an amount of energy generated (for example, by the power grid or a power supply) Power generation unit of an end user device) or a consumed power amount (for example, from a power consumption unit of a power unit)
- the energy transmitted may be the result of a generated energy in using the distribution structure and in terms of the energy consumed.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015102443.8A DE102015102443A1 (de) | 2015-02-20 | 2015-02-20 | Erkennen einer durch einen Tapchanger erzeugten elektrischen Diskontinuität basierend auf einer Netzqualitätscharakteristik |
PCT/EP2016/053390 WO2016131887A1 (de) | 2015-02-20 | 2016-02-17 | Erkennen einer durch einen tapchanger erzeugten elektrischen diskontinuität basierend auf einer netzqualitätscharakteristik |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3284153A1 true EP3284153A1 (de) | 2018-02-21 |
Family
ID=55405328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16705762.9A Withdrawn EP3284153A1 (de) | 2015-02-20 | 2016-02-17 | Erkennen einer durch einen tapchanger erzeugten elektrischen diskontinuität basierend auf einer netzqualitätscharakteristik |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3284153A1 (de) |
DE (1) | DE102015102443A1 (de) |
WO (1) | WO2016131887A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3392996B1 (de) * | 2017-04-21 | 2019-08-07 | ABB Schweiz AG | Regulierung einer längsspannung an den linien-anschlüssen eines phasenschiebertransformators |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8200372B2 (en) * | 2008-03-31 | 2012-06-12 | The Royal Institution For The Advancement Of Learning/Mcgill University | Methods and processes for managing distributed resources in electricity power generation and distribution networks |
US8706309B2 (en) * | 2010-04-10 | 2014-04-22 | Schweitzer Engineering Laboratories Inc | Systems and method for obtaining a load model and related parameters based on load dynamics |
US9172274B2 (en) * | 2011-06-16 | 2015-10-27 | General Electric Company | System, method, and apparatus for operating a power distribution system |
EP2645517B1 (de) * | 2012-03-30 | 2017-07-19 | ABB Schweiz AG | Verbesserung der Zuverlässigkeit der Erkennung von Inselbildung in einem Stromverteilungsnetz |
-
2015
- 2015-02-20 DE DE102015102443.8A patent/DE102015102443A1/de not_active Withdrawn
-
2016
- 2016-02-17 WO PCT/EP2016/053390 patent/WO2016131887A1/de active Application Filing
- 2016-02-17 EP EP16705762.9A patent/EP3284153A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102015102443A1 (de) | 2016-08-25 |
WO2016131887A1 (de) | 2016-08-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2697888B1 (de) | Verfahren zur bestimmung der topologie eines niederspannungsnetzes | |
EP3613118A1 (de) | Ladestation zum laden mehrerer elektrofahrzeuge, insbesondere elektroautomobile | |
EP3417523B1 (de) | Verfahren zum steuern eines regeltransformators und elektrische anlage zum koppeln zweier wechselstromnetze | |
EP3336995B1 (de) | Verfahren, steuereinrichtung und system zum ermitteln von zustandswerten zur beschreibung von betriebszuständen in einem teilnetz eines energieversorgungsnetzes | |
EP3820011A1 (de) | Lastverwaltungssystem und verfahren zur regelung eines solchen lastverwaltungssystems | |
EP2828945B1 (de) | Verfahren und vorrichtung zum regeln einer spannung in einem verteilnetz | |
DE102015113771A1 (de) | Fahrzeugbatterie-Ladeystem-Benachrichtigung | |
EP3284152B1 (de) | Energieübertragungssteuerung zwischen energieversorgungsnetz und endnutzereinrichtungen basierend auf energiefluss und netzqualität | |
DE102014115119A1 (de) | Verfahren und System zum Überwachen einer Netzspannung in einem Niederspannungsnetz | |
EP2849019A1 (de) | Verfahren und Steuergerät zum Begrenzen einer elektrischen Belastung in einem Netzzweig eines elektrischen Netzes | |
EP2930813B1 (de) | Verfahren und Vorrichtung zur Erfassung einer elektrischen Größe eines elektrischen Verteilnetzes | |
DE102017209718A1 (de) | Adaptervorrichtung für eine Ladeeinrichtung eines Kraftfahrzeugs sowie Verfahren zum Betreiben der Adaptervorrichtung | |
EP3284153A1 (de) | Erkennen einer durch einen tapchanger erzeugten elektrischen diskontinuität basierend auf einer netzqualitätscharakteristik | |
DE102007063513A1 (de) | Produktionsenergiedatenerfassungs- und -analysesystem | |
DE102018113689A1 (de) | Load-Manager für dezentrale Ladepunkte | |
EP3576243A1 (de) | Technische entkoppelung eines micro-grids | |
EP0729213B1 (de) | Anordnung mit einem Rundsteuersender und einer dem Rundsteuersender nachgeschalteten Netzankopplung | |
WO2023046778A1 (de) | Verfahren zur regelung einer einspeiseleistung einer einspeiseeinrichtung in zumindest eine phase eines zumindest einen elektrischen verbraucher umfassenden elektrischen verbrauchernetzes | |
DE102016112005A1 (de) | Verfahren zur Auslegung des Netzschutzes eines elektrischen Niederspannungsversorgungsnetzes | |
WO2023156219A1 (de) | Inselnetzerkennung spannungseinprägender wechselrichter und wechselrichter | |
DE102018109046A1 (de) | Absicherung von öffentlichen Stromnetzen durch Micro-Grids | |
EP4231478A1 (de) | Verfahren, netzsteuereinrichtung und system zum steuern eines elektrischen ortsnetzes | |
WO2023285439A1 (de) | Verfahren zur regelung elektrischer netzgrössen in einem einspeisenetzwerk | |
DE102013205427A1 (de) | Einspeisevorrichtung zum Einspeisen von elektrischem Strom in ein Stromnetz sowie Verfahren zum Betreiben einer solchen Einspeisevorrichtung | |
DE202024100016U1 (de) | Vorrichtung, welche eine Unterstützung für die Nachrüstung eines intelligenten Zählers bereitstellt |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20180105 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INNOSENSE AG |
|
17Q | First examination report despatched |
Effective date: 20180921 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20190628 |