EP3766157A1 - Mesure d'harmoniques dans les réseaux électriques - Google Patents

Mesure d'harmoniques dans les réseaux électriques

Info

Publication number
EP3766157A1
EP3766157A1 EP19706559.2A EP19706559A EP3766157A1 EP 3766157 A1 EP3766157 A1 EP 3766157A1 EP 19706559 A EP19706559 A EP 19706559A EP 3766157 A1 EP3766157 A1 EP 3766157A1
Authority
EP
European Patent Office
Prior art keywords
voltage
voltage converter
determined
transfer function
correction factor
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Withdrawn
Application number
EP19706559.2A
Other languages
German (de)
English (en)
Inventor
Jörn Runge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Innogy SE
Original Assignee
Innogy SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innogy SE filed Critical Innogy SE
Publication of EP3766157A1 publication Critical patent/EP3766157A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0007—Frequency selective voltage or current level measuring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
    • 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
    • H02J3/381—Dispersed generators

Definitions

  • the present subject matter relates to a method, an apparatus and a system for optimized measurement of harmonics in power grids, in particular offshore and / or onshore grids which are subject to harmonic loading, e.g. B. by an injection of electrical energy through wind turbines (WEA).
  • WEA wind turbines
  • Inductive voltage transformers are very cheap and therefore widely used in the industry
  • Voltage transformer is very expensive and therefore unusual.
  • HVDC high voltage direct current
  • the standard measuring instruments used so far are regularly calibrated to only one fundamental vibration - also referred to as nominal frequency - of the 50 Hz mains.
  • nominal frequency - of the 50 Hz mains For frequencies not equal to 50 Hz (eg for wind turbines), especially over 1000 Hz a precise harmonic measurement can not be guaranteed.
  • the example of a frequency of over 1000 Hz may be isolated in the power grid, z. B. by resonating individual components of the power grid may be charged with such high frequencies.
  • the subject matter of the present invention is therefore based on the provision of a solution with which, in particular, the most cost-effective and accurate harmonic measurement in the power grid can be carried out.
  • a method comprising:
  • a correction factor for at least one first voltage converter arranged in a power network wherein the correction factor is indicative of a correction for the acquisition of correct measured values measured by the at least one first voltage converter
  • the determination of the correction factor of the at least one first voltage converter is based at least in part on a first measured voltage of the at least one first voltage converter and a second measured voltage of the at least one first voltage converter
  • the second voltage of the at least one first voltage converter is determined at least partially based on a previously known transfer function of at least one second voltage converter and the first voltage of the at least one first voltage converter without
  • an apparatus arranged to carry out and / or control the method according to the first aspect of the invention or comprising respective means for carrying out and / or controlling the steps of the method according to the first aspect of the invention.
  • either all steps of the method can be controlled, or all steps of the method can be executed, or one or more steps can be controlled and one or more steps can be executed.
  • One or more of the means may also be executed and / or controlled by the same unit.
  • one or more of the means may be formed by one or more processors.
  • a device which comprises at least one processor and at least one memory
  • Program code includes, wherein the memory and the program code are arranged with the at least one processor, a device
  • the device with the processor and the memory to at least execute and / or control the method according to the first aspect of the invention. Either all steps of the
  • Methods are controlled, or all steps of the method are executed, or one or more steps are controlled and one or more steps are executed.
  • a system which comprises one or more devices arranged to carry out and / or control the method according to the first aspect of the invention or means for carrying out and / or controlling the steps of the method according to the first aspect of the invention.
  • a system which comprises one or more devices arranged to carry out and / or control the method according to the first aspect of the invention or means for carrying out and / or controlling the steps of the method according to the first aspect of the invention.
  • either all steps of the method can be controlled, or all steps of the method can be executed, or one or more steps can be controlled and one or more steps can be executed.
  • a fifth exemplary aspect of the invention is a
  • a computer program comprising program instructions that cause a processor to execute and / or control the method according to the first aspect of the invention when the computer program is run on the processor.
  • a processor are intended in this specification, among others
  • DSP digital signal processors
  • SASLCs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • the computer program may, for example, be distributed over a network such as the Internet, a telephone or mobile network and / or a local area network.
  • the computer program may be at least partially software and / or firmware of a processor. It may equally be at least partially implemented as hardware.
  • the computer program may for example be stored on a computer-readable storage medium, eg. B. a magnetic, electrical, electro-magnetic, optical and / or other storage medium.
  • the storage medium may for example be part of the processor, for example a (non-volatile or volatile)
  • Program memory of the processor or a part thereof is, for example, representational, that is, tangible, and / or non-transitory.
  • harmonics is understood to mean occurring or resulting harmonics and / or intermediate harmonics in the power network.
  • the object of the invention is based on the finding that a z. B.
  • the at least one second voltage converter - with known transfer function (eg a capacitive voltage transformer or an already measured inductive voltage converter) it makes it possible with this at least one second voltage converter, a calibration factor, wherein at least partially based on this a correct transfer function for the at least one first voltage converter can be determined. Furthermore, it is possible to be disposed of all others in electrical proximity (eg on the same
  • Voltage converter (eg further first voltage converter) is then, for example, with the first one already used in the power grid
  • the harmonic measurement for example, a frequency-dependent voltage measurement be. Accordingly, the already existing in the power grid components, in particular the inductive voltage converter can be used.
  • the transmission function of a (eg first) voltage converter is indicative, for example, of the transmission behavior of the voltage converter in the power network.
  • the transfer function includes the amplitude and the
  • Phase spectrum which can be determined accordingly. From these spectra can be subsequently determined the transmission behavior that by the
  • Transfer function is represented, determined (eg derived, and / or calculated).
  • the amplitude and phase spectra may be based, at least in part, on one of the at least one first
  • Voltage transformer performed frequency-dependent voltage measurement can be determined.
  • the transfer function for example, further represents a quotient of the spectrums of an input and response signal.
  • the transfer function may be determined, for example, based on the input and response signal (eg.
  • Allow voltage converter For example, there is a given
  • the determination of the correction factor for at least one first voltage converter arranged in a power network can be carried out and / or carried out, for example, by measuring the first and the second voltage according to the features of the steps.
  • the measurement of the first and the second voltage in the sense of the present subject represents in particular one Harmonic measurement, wherein the measurement of the first and the second voltage, for example, a frequency-dependent voltage measurement.
  • the measured values that are measured by the at least one first voltage converter are, for example, voltage, current, amplitude, phase, or a
  • the calibration factor represents, for example, a factor that z. B. can be offset (eg, multiplied) with the measured values measured by the at least one first voltage converter so that the measured values correspond to the correct ones (i.e., corrected).
  • the determination of the calibration factor can be carried out and / or controlled, in particular in the event of harmonics, since in this case deviations between the first voltage (eg.
  • the z. B. at least temporarily the at least one second voltage converter is arranged in the power grid, so that in particular
  • Deviations between the measured values determined by the at least one first voltage converter and those which are actually present can be determined. Then the specific calibration factor is output or its output is initiated, for. To another entity that can process (further) the calibration factor, such as a monitoring system (e.g., network control system, for example, as an example of a power line network) used by a grid control center of the power grid.
  • a monitoring system e.g., network control system, for example, as an example of a power line network
  • This can, for example, use the specific calibration factor in order to be able to determine the actual measured values of at least one first voltage converter. For example, occurring harmonics can be detected quickly, so that
  • suitable measures can be introduced.
  • the determined correction factor can additionally be output or its output can be initiated.
  • the power grid is in particular one or at least part of an offshore and / or onshore power grid, in particular WEA feeding electrical energy into the power grid or at least part of the offshore and / or onshore power grid.
  • the power grid is for example a three-phase power grid.
  • the power grid may be part of an offshore substation and / or onshore substation for wind farms or may be comprised of offshore substation and / or onshore substation for wind farms.
  • the power grid may for example be part of a substation for photovoltaic systems or of a substation for
  • Photovoltaic systems include. Such substations are needed, for example, to convert electricity generated by an offshore and / or onshore wind farm and / or a photovoltaic plant so that the power generated is transmitted for transmission to the offshore and / or onshore wind farm and / or.
  • offshore substations and / or onshore substations for wind farms and / or substations for photovoltaic systems represent possible concrete implementations or fields of application for the present subject matter.
  • a voltage converter is understood in particular to be a voltage converter in the field of electrical power engineering, which is designed to measure AC voltage of a power network. The mode of operation of such a voltage converter is, in particular, to transmit the high voltage to be measured proportionally to low voltage values. These low voltage values can be transmitted to voltage measuring devices, energy meters, systems monitoring the power network (eg monitoring systems of a network control center), or the like, for which purpose voltage transformers are provided correspondingly for such measuring purposes.
  • the at least one first voltage converter is in particular an inductive one
  • an inductive voltage transformer Under an inductive voltage transformer is objectively an inductive voltage converter, which is basically constructed as a transformer understood.
  • Such inductive voltage transformers comprise a
  • Inductive voltage transformers have means in order to be able to observe small deviations in the transmission ratio and small error angles in the phase shift between primary voltage and secondary voltage.
  • Inductive voltage transformers can be arranged on the primary side for determining measured values either between two voltage-carrying conductors (outer conductors) or between a conductor and the earth. For example, for the
  • the inductive voltage converter can only have a high voltage connection.
  • the second voltage converter which is used to determine the transfer function of the at least one first voltage converter, is in particular a capacitive voltage converter, or an inductive voltage converter, which is measured so that it can already determine corrected (ie correct) measured values.
  • the method further comprises:
  • the corrected transfer function allows in particular a
  • alt (f) represents the voltage previously displayed on K2;
  • new (f) represents the correct voltage to be displayed on K2;
  • measured (f) represents the voltage currently measured at U2.
  • U2, neu (f) can be used to calibrate the at least one first voltage converter whose transfer function is unknown.
  • the at least one second voltage converter with known transfer function
  • Voltage converter (and also all of at least a second Voltage transformer electrically close (eg inductive) voltage converter, wherein the at least one first voltage converter, if not exchanged by the at least one second voltage converter, and / or the voltage converter electrically close to the at least one second voltage converter z.
  • Voltage converter (eg the at least one first voltage converter) on all three phases of an existing voltage measuring point by the at least one second (eg capacitive or measured inductive) voltage converter with known transfer function, eg. B. at the existing voltage measuring point done.
  • the at least one second voltage converter in addition z. B. to the busbar on which also the at least one first voltage converter is arranged to be arranged at least temporarily.
  • the position (eg the
  • the at least one second voltage converter can be used to determine the correct transfer function of all electrically close (eg inductive) voltage transformers, the position (eg voltage measuring point) at which the at least one second voltage converter is arranged B.
  • Voltage transformers are defined, for example, such that "K1" or “K2" represent the respective primary connections of the respective voltage transformers at these positions.
  • the calibration factor (Ul (f) / U2, old (f)) can be integrated, for example, in measuring devices that use the determined measured values of the at least one first voltage converter (if, for example, measured data are processed by means of digital signal processing) each frequency then the correct one
  • SCADA Supervisory Control and Data Acquisition
  • Node voltages of the power grid are displayed (eg, a human machine interface (HM1) software) and / or by means of which they are evaluable (eg., By means of a simulation environment), possible.
  • HM1 human machine interface
  • the z. B. is used by such software, it allows that once measured voltage converter, which are used in particular as calibrated meters in the power grid, not need to be readjusted sometimes with great effort. Correct measured values can always be generated on the basis of the measured measured values of the first voltage converter included in the power network and, consequently, harmonics of the power network can be reliably, accurately and correctly determined (eg measured).
  • the at least one second voltage converter is temporarily (for example limited in time) from the power network.
  • the at least one second voltage converter is for example temporarily covered by the power grid by z. B. an exchange of an already covered by the power network voltage converter by the at least one second
  • the Voltage transformer takes place. Since of the at least one second voltage converter, the transfer function is known, for. B. by the at least one second voltage converter, for example, before the arrangement in the power grid
  • the calibration factor of at least one first voltage converter (which is arranged, for example, electrically close to, eg, on the same busbar as the at least one second voltage converter) can be determined.
  • the determination of the first voltage and / or the second voltage of the at least one takes place first voltage converter to (all) three phases of a voltage measuring point in the power grid.
  • the at least one first and the at least one second voltage converter are arranged, for example, on a voltage measuring point existing in the power grid, so that at least the first and second voltage can be determined by the at least one first and the second voltage converter. Furthermore, the current, amplitude (n) and phase (s) or amplitude and phase response of the at least one first can also be used
  • Voltage converter can be determined.
  • the at least one first and the second voltage converter are included in the power network such that measured values (eg voltage, current, amplitude, phase, or a combination thereof) can be determined at all three phases of the correspondingly three-phase power network.
  • the steps of the subject method according to the first aspect of the present invention are performed.
  • a corresponding determination (eg measurement) of the above-mentioned type takes place in various, in particular all possible switching states and / or operating states of the one or more components that comprise or comprise the power grid.
  • Such a change in the topology of the power grid by changing the switching state of the power grid and / or one or more
  • Operating conditions of the one or more components of the power network for example, by opening or closing various of the mains network covered switch (on or off), and / or changing the operating state of one or more components of the Power supply (eg operating point or speed change from a transformer or a generator, to name just a few non-limiting examples).
  • a change in the topology of the power grid can be done by, for example, open or close connections to nodes of the power grid, z. B. via switches.
  • Switching state and / or operating state of the one or more components of the power network may have different effects on the measurement by the at least one first voltage converter, the z. B. sign off by a different transmission behavior of the identical at least a first voltage converter, it is advantageous to a subject correction factor for different, in particular for each of the possible
  • the at least one second voltage converter is temporarily arranged in or included in the power grid for a measurement period of about one day to six months.
  • Voltage transformers over a longer period of time (eg one day to several months (eg 2, 3, 4, 5 or 6 months) or the like, just to name a few non-limiting examples) and all eg practically occurring) switching states of the power network and / or operating states of the one
  • a corresponding determination of the calibration factor (eg., For each possible switching state of the power grid and / or operating state of the one or more components of the power network) be arranged in the power grid or be included by this.
  • the subject method according to the first aspect of the present invention executed and / or controlled in order to be able to detect in particular all frequencies occurring with relevant voltage amplitude can. With these correct measurements, all further and electrically close inductive voltage transformers can be calibrated for an extended frequency range (eg from 50 Hz to 10 kHz).
  • the (at least one second) voltage converter with known transfer function eg a capacitive voltage transformer or eg a correspondingly measured inductive voltage transformer
  • the other inductive voltage converter can again pass through the previously be replaced by the power network included voltage transformers.
  • Correction factor for a frequency range of 50 Hz to 2.5 kHz in particular from 50 Hz to 5 kHz, particularly preferably from 50 Hz to 10 kHz.
  • the at least one first voltage converter can be calibrated, for example, for an extended frequency range, in this case from 50 Hz to 10 kHz.
  • This extended frequency range is in particular for the determination (eg determination) of possible harmonics which occur in the power network z. B. by feeding electrical energy through one or more wind turbines can make sense.
  • the determination of the correction factor takes place in each case for all electrically close inductive
  • the corresponding electrically close component is included in the power grid, and in particular z. B. is arranged on an identical busbar as the at least one second voltage converter or with a cable to the at least one second voltage converter directly, that is connected without diversion via remote structures of the power grid.
  • Calibration factors are determined. Furthermore, the respective determined calibration factor can be output as the at least one first voltage converter or its respective output can be initiated for all electrically close inductive voltage transformers.
  • the subject method for example, for a plurality of first voltage converter, in particular by means of at least one second
  • Voltage converter which is arranged electrically close to the plurality of first voltage transformers in the power grid (eg on the identical busbar), executed and / or controlled.
  • the electrically proximate at least one first voltage converter is calibrated for an extended frequency range (eg, from 50 Hz to 10 kHz) based at least in part on the respective determined calibration factor.
  • an extended frequency range eg, from 50 Hz to 10 kHz
  • Voltage transformers for the extended frequency range are at least partially calibrated based on the respective of the plurality of first voltage converter determined calibration factors.
  • the at least one second voltage converter is a capacitive or a metered inductive voltage converter.
  • a measured inductive voltage transformer is understood to mean, in particular, an inductive voltage converter which has been measured before being arranged in the power grid so that its transfer function has been determined and / or is already known in the power grid prior to the arrangement. Based on the specific and / or known transfer function of the measured inductive voltage converter (represent the at least one second
  • Voltage transformer can be determined according to the transfer function of the at least one first voltage converter.
  • a capacitive voltage transformer is understood in particular to be a voltage transformer which has a high insulation strength at high temperatures
  • the corrected transfer function for the at least one first voltage converter is readjusted based at least in part on the correction factor.
  • the transfer function for the at least one first voltage converter can be readjusted on the software side Change (eg of electrically close) further first voltage transformers is determined, and on the transfer function of the at least one first voltage converter
  • the transfer function of the at least one first voltage converter can be readjusted in the event that the at least one first voltage converter has, for example, an interface (eg a digital input or the like).
  • the interface is at least a first
  • the interface could be designed analogously
  • the transfer function of the at least one first voltage converter can be readjusted, for example, by a current (for example from 0 to 20 mA) for transmitting a correspondingly modulated control signal for readjusting the transfer function of the at least one first voltage converter is used.
  • the determined correction factor and / or the corrected transfer function will be stored in a memory.
  • the memory includes, for example, a database.
  • a link between an identification information eg, 1D of the at least one first voltage converter
  • a correction factor e.g. 1D of the at least one first voltage converter
  • a calibration factor e.g. 1D of the at least one first voltage converter
  • a transfer function e.g. 1D of the at least one first voltage converter
  • a grid control system will apply the correction factor, the calibration factor, the
  • Transfer function depending on the switching state of the power grid and / or the operating state of the one or more components of the power network, in which and / or in which at least the determined correction factor and / or the corrected transfer function has been determined deposited (eg stored ) be.
  • the memory or the database encompassed by the memory may alternatively or additionally be included in a network device (eg, from a voltage measurement point, wherein the network device transmits, for example, the determined measured values to a network control center) for correction by the at least one first voltage converter identified
  • Measured values integrated included by this, or be connected to this.
  • Voltage transformer determined measured values take place directly in the power supply unit. Accordingly, for example, by the power supply unit, a transmission of already corrected measured values, for. B. to a network control center, so that on the part of Netzleitmaschine no further correction of the measured values of the at least one first voltage converter at least partially based on the correction factor, the calibration factor, the transfer function, or a combination thereof must be made.
  • At least one correction factor and / or a corrected transfer function can be stored in the memory, in particular the database comprised by the memory, for each of the first voltage transformers included in the power network.
  • FIG. 1 shows an exemplary system according to an embodiment
  • FIG. 2 is a flowchart of an example method according to FIG.
  • FIG. 3 shows a schematic illustration of an exemplary embodiment of a device which, for example, can execute and / or carry out an objective method in all aspects
  • Fig. 4 different embodiments of a storage medium.
  • Fig. 1 shows an exemplary system 100 of an embodiment according to the fourth aspect of the present invention.
  • the system 100 comprises two first voltage transformers 150, a second voltage converter 160, a power supply unit 191 included in a voltage measuring point 190, a server 170, which For example, executes and / or controls a network control system, and / or a
  • Simulation software executes and / or controls, a server 110, which executes and / or controls, for example, the subject method of the first aspect of the present invention, an optional database 120, here two WEA 130, the electrical energy into the power grid 140 feed, and a
  • Communication network 180 (eg, the Internet) through which at least the server 170 can communicate with the server 110.
  • the server 170 and the server 110 may be directly connected to each other and z. B. communicate over a wired communication link (eg., According to the Local Area Network (LAN) standard).
  • the server 110 may be included by the server 170 such that a physical (i.e., more tangible) server, e.g. B. performs both a network control system of the power grid 140 and the subject method according to the first aspect of the invention and / or controls.
  • a physical (i.e., more tangible) server e.g. B. performs both a network control system of the power grid 140 and the subject method according to the first aspect of the invention and / or controls.
  • the second voltage converter 160 is temporarily arranged in the power grid, z. B. on the same busbar as the two other first voltage converter 150.
  • the second voltage converter 160 is temporarily arranged in the power grid, z. B. on the same busbar as the two other first voltage converter 150.
  • Voltage converter 160 replace one of the first two voltage transformer 150 (not shown in Fig. 1 schematically).
  • the first voltage of the at least one first voltage converter 150 and a second voltage of the at least one first voltage converter 150 is determined, for example, by determining the first (frequency-dependent) voltage, for. B. before the second voltage converter 160 is disposed in the power grid 140.
  • the second (frequency-dependent) voltage is determined after the second voltage converter 160 is arranged in the power grid 140 and is encompassed by it.
  • the second voltage of the at least one first voltage converter 150 is at least partially based on a previously known transfer function of the at least one second voltage converter 160 is determined, thus corresponds to the correct and at the at least one first voltage converter 150th
  • the network device 191 for example, transmitted from the network device 191 to the server 110, z. Via the server 170 connected to the power grid 140 and the communications network 180 (eg the Internet). Accordingly, at least the power supply 191 a
  • the server 110 determines a correction factor of the at least one first voltage converter 150 based at least in part on the first and second determined voltages.
  • the server 110 sets a calibration factor.
  • This calibration factor for the at least one first voltage converter 150 can be determined, for example, by the correct voltage corresponding to the voltage resulting from the first voltage, the correct voltage and the second voltage z. For example, determined by the following formula:
  • the determined calibration factor is output, e.g. From the server 110 to the server of the network control system 170, which determines the calibration factor for determining the correct voltage on at least one of the first Voltage transformer 150 can use. For example, based on the correct voltage, the server of the network control system 170 can be fast and reliable
  • FIG. 2 shows a flow diagram 200 of an exemplary method according to FIG.
  • the flowchart 200 may be executed and / or controlled by the server 110 of FIG. 1. Alternatively or additionally, the flowchart 200 may
  • a correction factor is determined for at least one first voltage converter (eg one of the voltage transformers 150 according to FIG. 1) arranged in a power grid (eg power grid 140 according to FIG.
  • the correction factor is indicative of a correction for obtaining correct and from the at least one first voltage converter (eg one of the
  • Voltage transformer 150 measured values, wherein the determination of the correction factor of the at least one first voltage converter based at least partially on a first voltage of the at least one first voltage converter
  • Voltage converter takes place, wherein the second voltage of the at least one first voltage converter based at least partially on a previously known
  • Voltage converter 160 of FIG. 1 is determined and the first voltage of the at least one first voltage converter without consideration of the previously known Transfer function of the at least one second voltage converter is determined.
  • a calibration factor is determined for the at least one first voltage converter (eg, voltage converter 150 of Figure 1) based at least in part on the determined correction factor.
  • an output or cause of the output of the particular calibration factor e.g. From the server 110 of FIG. 1 to the server of the network control system 170 of FIG. 1.
  • FIG. 3 shows a schematic representation of an exemplary embodiment of a device 300 that may be used in the context of all aspects.
  • Device 300 represents, for example, the server 110 according to FIG. 1, or the server of the network control system 170 according to FIG. 1, or the network device 191 according to FIG. 1 included in the voltage measurement point of the power network (power network 140 according to FIG. 1).
  • the device 300 may execute and / or control an objective method in all aspects.
  • the device may for example comprise and / or comprise means for carrying out and / or carrying out an objective method in all aspects.
  • the subject method in all aspects may be further performed and / or performed by a plurality (i.e., at least two) devices 30.
  • the device 300 may execute the flowchart 200 of FIG. 2.
  • the apparatus 300 comprises a processor 310 with associated main memory 311 and program memory 312.
  • the processor 310 executes, for example, program instructions stored in the program memory 312
  • Program memory 312 contains a computer program and tunes in
  • Device 300 represents an example of a device of a system (eg, system 100 of FIG.
  • the program memory 312 may be, for example, a persistent memory, such as a read only memory (ROM) memory.
  • the program memory 312 may, for example, be permanently connected to the processor 310, but may alternatively be detachably connected to the processor 310, for example as a memory card, floppy disk, or optical media (eg a CD or DVD) in the program memory 312, or in a separate one Memory, also other information can be stored.
  • the main memory 311 is used, for example, for storing temporary results during execution of the program instructions, for example volatile memory, such as random access memory (RAM) memory.
  • volatile memory such as random access memory (RAM) memory.
  • the processor 310 is also operatively connected to a communication interface 313, with which, for example, information exchange with others
  • Communication interface 313 may, for example, a specific
  • Calibration information are output (step 203 of FIG. 2).
  • the device 300 may include other components. If the device 300 represents the device for performing and / or performing a subject method (eg, server 110 of FIG.
  • Determination unit (not shown in FIG. 3) provided, for example, for determining a correction factor (step 201 of FIG. 2) is set up and is operatively connected to the processor 310. Furthermore, an optional one
  • Determination unit (not shown in Fig. 3) provided, for example, the Determining a calibration factor (step 202 of FIG. 2) is established and operatively connected to the processor 310.
  • the device 300 may include a user interface (eg, an input / output device 314) by means of which, for example, reproduction of information (e.g., optical reproduction) is possible.
  • the user interface is a display device (e.g., a Liquid Crystal Display (LCD) or a Light Emitting Diode (LED) display or the like).
  • LCD Liquid Crystal Display
  • LED Light Emitting Diode
  • one or more inputs of a user can be recorded by means of the user interface, for. Example by means of a keyboard, mouse, or a touch-sensitive display device.
  • the storage medium may be, for example, a magnetic, electrical, optical and / or different storage medium.
  • the storage medium may be part of a processor (eg, processor 310 of FIG.
  • Embodiments of a storage medium include a flash memory 410, a SSD hard disk 411, a magnetic hard disk 412, a memory card 413, a memory stick 414 (eg, a USB stick), a CD-ROM or DVD 415, or a floppy disk 416th
  • the sequence of the process steps described in this specification in the individual flowcharts is not necessarily, alternative sequences of process steps are conceivable.

Abstract

L'invention concerne un procédé réalisé par au moins un appareil comprenant : la détermination d'un facteur de correction pour au moins un premier transformateur de tension disposé dans un réseau électrique, le facteur de correction étant indicatif d'une correction pour obtenir des valeurs mesurées correctes mesurées par au moins un premier transformateur de tension. La détermination du facteur de correction de l'au moins un premier transformateur de tension est au moins partiellement basée sur une première tension mesurée d'au moins un premier transformateur de tension et une seconde tension mesurée d'au moins un premier transformateur de tension. La deuxième tension de l'au moins un premier transformateur de tension est déterminée au moins en partie sur la base d'une fonction de transfert connue d'au moins un deuxième transformateur de tension, et la première tension de l'au moins un premier transformateur de tension est déterminée sans tenir compte de la fonction de transfert connue d'au moins un deuxième transformateur de tension ; la détermination d'un facteur d'étalonnage pour l'au moins un premier transformateur de tension, au moins en partie sur la base du facteur de correction déterminé ; et la délivrance ou la provocation de la délivrance du facteur d'étalonnage déterminé. L'invention concerne en outre un dispositif conçu de manière appropriée et un système.
EP19706559.2A 2018-03-16 2019-02-19 Mesure d'harmoniques dans les réseaux électriques Withdrawn EP3766157A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018106200.1A DE102018106200B4 (de) 2018-03-16 2018-03-16 Oberwellenmessung in Stromnetzen
PCT/EP2019/054043 WO2019174869A1 (fr) 2018-03-16 2019-02-19 Mesure d'harmoniques dans les réseaux électriques

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EP3766157A1 true EP3766157A1 (fr) 2021-01-20

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US (1) US20210011061A1 (fr)
EP (1) EP3766157A1 (fr)
CA (1) CA3094117A1 (fr)
DE (1) DE102018106200B4 (fr)
WO (1) WO2019174869A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111384727B (zh) * 2020-04-30 2021-09-03 阳光电源股份有限公司 一种多路并网发电系统及其控制方法
EP4198525A1 (fr) * 2021-12-16 2023-06-21 Siemens Aktiengesellschaft Mesure de tension dans les réseaux d'alimentation électrique

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE2630959C2 (de) * 1976-07-07 1986-04-30 Heliowatt Werke Elektrizitäts- Gesellschaft mbH, 1000 Berlin Kilowattstundenzähler mit statischem Meßwerk
SE469360B (sv) * 1991-11-04 1993-06-21 Asea Brown Boveri Foerfarande och anordning foer att i ett kraftnaet reducera stoerningar med ett styrbart aktivt filter
US5995911A (en) * 1997-02-12 1999-11-30 Power Measurement Ltd. Digital sensor apparatus and system for protection, control, and management of electricity distribution systems
JP4134528B2 (ja) * 2001-05-16 2008-08-20 株式会社日立製作所 被覆電力線用電圧測定装置
DE10346356A1 (de) * 2003-09-26 2005-05-12 Siemens Ag Verfahren und Vorrichtung zur Spannungsmessung
DE102012105046A1 (de) * 2012-06-12 2013-12-12 Maschinenfabrik Reinhausen Gmbh Referenzmesssystem zum Kalibrieren eines Leistungsmesssystems für Leistungstransformatoren
DE102013202868C5 (de) * 2013-02-21 2021-10-21 Kries-Energietechnik Gmbh & Co.Kg Fehler- und/oder Lasterfassungseinrichtung für eine Nieder- oder Hochspannungsanlage

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DE102018106200A1 (de) 2019-09-19
US20210011061A1 (en) 2021-01-14
WO2019174869A1 (fr) 2019-09-19
DE102018106200B4 (de) 2019-11-14
CA3094117A1 (fr) 2019-09-19

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