EP3871306A1 - Dispositif de filtrage pour un réseau d'énergie, utilisation d'un agencement de bobines et procédé de fonctionnement d'un dispositif de filtrage - Google Patents

Dispositif de filtrage pour un réseau d'énergie, utilisation d'un agencement de bobines et procédé de fonctionnement d'un dispositif de filtrage

Info

Publication number
EP3871306A1
EP3871306A1 EP19794524.9A EP19794524A EP3871306A1 EP 3871306 A1 EP3871306 A1 EP 3871306A1 EP 19794524 A EP19794524 A EP 19794524A EP 3871306 A1 EP3871306 A1 EP 3871306A1
Authority
EP
European Patent Office
Prior art keywords
component
filter device
inductive component
inductive
capacitive
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Withdrawn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
EP19794524.9A
Other languages
German (de)
English (en)
Inventor
Matthias JACOBI
Christian Kähler
Manuel SOJER
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP3871306A1 publication Critical patent/EP3871306A1/fr
Withdrawn legal-status Critical Current

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
    • H02J3/01—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
    • H03H7/425—Balance-balance networks
    • H03H7/427—Common-mode filters
    • 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
    • Y02E40/40—Arrangements for reducing harmonics

Definitions

  • the invention relates to a filter device for an energy network, a use of a throttle arrangement for adapting a resonance frequency of a filter circuit, and a method for operating such a filter device.
  • the resonance frequency of the filter device it may be necessary or advantageous to change the resonance frequency of the filter device, for example in order to avoid overloading the filter device.
  • An interruption of the filtering due to such a change in the resonance frequency is however not acceptable.
  • there are potentials in the switching elements in particular in the case of medium-voltage or high-voltage networks, which are in the order of magnitude of the mains voltage, that is to say we at least in the order of 1 kV or more kV up to several 10 kV. Accordingly, very high demands must be placed on the switching elements, which results in correspondingly high development and component costs, for example for on-load tap changers for uninterrupted switching between winding taps of an adjustable choke coil or other switching elements designed for high voltage.
  • a filter device for an energy network has a capacitive component, a first inductive component and a second inductive component which can be connected in series with the capacitive component and the first inductive component.
  • the capacitive component is arranged between the first inductive component and the second inductive component.
  • the filter device also has a connection in order to connect the filter device to the energy network.
  • the first inductive component is arranged between the connection and the capacitive component.
  • the filter device also includes a switching device which is set up to bridge the second inductive component and / or to cancel a bridging of the inductive component in order to adapt a resonance frequency of the filter device.
  • switching elements For the switching device for bridging the second inductive component, this has the consequence that the switching elements only have to have a significantly lower dielectric strength than the mains voltage in relation to the reference potential. Thus, even with filter devices for medium or high voltage networks, switching elements can be sufficient, which are designed for low voltage, for voltages below 1 kV.
  • the inductive components can be designed simply, for example as choke coils with a fixed number of turns instead of more complex and costly controlled chokes.
  • the energy network is a medium-voltage network or a high-voltage network.
  • the energy network is operated with a network voltage of 1 kV, in particular AC voltage, or higher.
  • the at least one switching element of the switching device contains a switching element designed for low voltage, in particular an overload or motor protection switch and / or an overload or motor protection relay and / or an overload relay.
  • Connection are used to denote circuit sections between the corresponding components, not a specific component or the like.
  • the connections can therefore be formed by an electrical conductor or also contain other electrical components.
  • the switching device is set up to short-circuit a first connection terminal of the second inductive component with a second connection terminal of the second inductive component in order to adapt the resonance frequency.
  • the second inductive component is bridged and effectively removed from the series connection. This changes the entire inductance of the filter device and adjusts its resonance frequency accordingly.
  • low-voltage switching elements such as relays, overload switches or the like can be used.
  • the first inductive component contains a first choke coil and the second inductive component contains a second choke coil.
  • the first and the second choke coil do not have a common core.
  • the first and the second coil are designed as air coils or each have their own separate core, wherein the cores can be magnetic or non-magnetic.
  • the resonance frequency is adjusted for frequency detuning. This means that the resonance frequency is adjusted so that a predetermined tuning frequency does not coincide with the resonance frequency or is too close to the resonance frequency.
  • the tuning frequency is the frequency or a frequency range that is primarily to be damped by the filter device.
  • the total number of inductive components which can be connected in series can be greater than three in various embodiments in order to increase the number of discrete stages.
  • an inductance of the second inductive component is different from an inductance of the third inductive component.
  • an inductance of the first inductive component is larger, in particular at least five times larger, for example at least ten times larger, for example approximately twenty times larger than the inductance of the second inductive component.
  • the highest voltage drop for example several kV, occurs across the first inductive component.
  • there is a slight less voltage for example in the range of several 100 V. If there is only a small voltage difference between different strings of the filter device and only a small voltage difference compared to a reference or earth potential at the connection terminals of the respective second inductive components.
  • the high inductance of the first inductive component ensures high damping of an inrush or fault current, so that the capacitive components of the filter device are protected.
  • a choke arrangement for adapting a resonance frequency of a filter circuit for an energy network.
  • the filter circuit contains a capacitive component, a first inductive component and a connection by means of which the filter circuit can be connected to the energy network.
  • the throttle arrangement contains at least one second inductive component.
  • the at least one second inductive component is connected to the filter circuit in such a way that the capacitive component is arranged between the first and the second inductive component.
  • the second inductive component can be bridged to adjust the resonance frequency.
  • the throttle arrangement contains a switching device which is set up to bridge the second inductive component and / or to cancel a bridge of the second inductive component in order to adapt the resonance frequency.
  • a method for operating a filter device is also specified.
  • the filter device is a filter device according to the improved concept.
  • the method includes bridging the second inductive component in order to adapt a resonance frequency of the filter device.
  • the method includes detecting at least one operating variable of the filter device or the energy network and adapting the resonance frequency as a function of the at least one recorded operating variable.
  • Figure 1 is an illustration of an exemplary embodiment of a filter device according to the improved concept.
  • Figure 2 is a representation of another exemplary embodiment of a filter device according to the improved concept.
  • the filter device contains a strand for each phase.
  • a first phase contains a series connection with a connection, a first inductor LI, a capacitor C and a second inductor L2, which are arranged in the order mentioned.
  • the first line can be connected to the first phase PI via the connection.
  • the filter device can have further inductive components connected in series with the second inductive component L2 in each strand.
  • the possibility of further inductive components is shown schematically by dotted lines in the strands.
  • the nth inductive components Ln, Ln ', Ln' 'and any inductive components represented by the dotted lines are optional.
  • the filter device contains a measuring device M, which can detect at least one operating variable of the filter device, for example a filter current, a filter voltage, a filter power and / or a filter temperature, and is in communication with the switching device SV.
  • a measuring device M which can detect at least one operating variable of the filter device, for example a filter current, a filter voltage, a filter power and / or a filter temperature, and is in communication with the switching device SV.
  • the operation of the filter device is primarily explained using the example of the first strand, that is to say the strand that can be connected to the first phase PI.
  • the main switching elements Sl, Sl ', Sl' ' are actuated simultaneously
  • the switching elements S2 are actuated simultaneously
  • the switching elements Sn are actuated simultaneously.
  • the second and nth inductive components and the associated switching elements S2, Sn are analogously to embodiments which contain further inductive components or the nth inductive components Ln, Ln ',
  • a total inductance of the first strand corresponds to the inductance of the first inductive component LI and the resonance frequency, at least approximately, of the tuning frequency.
  • the switching device SV can open the switching elements S2 and close or keep the switching elements Sn closed. This effectively shifts the star point between the second and nth inductive components L2, Ln. No current still flows through the nth inductive component Ln, since it bridges remains while the bridging of the second inductive component L2 is released.
  • the total inductance of the first strand is now given by the sum of the inductances of the first and second inductive components LI, L2. This lowers the resonance frequency compared to the previous case.
  • Switch device SV additionally open the switching means Sn.
  • the total inductance of the first strand is then given by the sum of the inductances of the first, the second and the nth inductive components LI, L2, Ln.
  • the inductive components LI, L2, Ln can be dimensioned such that the total inductance of the first strand when switching elements S2, Sn are open, that is to say the sum of the inductances of the first, second and nth inductive components LI, L2, Ln, the tuning frequency speaks ent or approximately corresponds.
  • the switching elements S2 and Sn are both open.
  • the detuning of the filter circuit can then be achieved in the opposite manner to that described above, namely by closing the switching elements Sn and opening or remaining the switching elements S2.
  • the switching elements S2 can then additionally be closed for further detuning.
  • the second and the nth inductive components can be bridged independently of one another. If the inductances of the second and the nth inductive components are not the same size, this results in a larger number of adjustable total inductances. While three electrically different circuits are possible according to FIG. 1 (1.: L2 and Ln bridged, 2.: Ln bridged and L2 not bridged, 3.: L2 and Ln not bridged), a fourth circuit is possible according to FIG. 2 (4th : L2 bridged and Ln not bridged). The same applies to additional inductive components.
  • Alternative embodiments result from the filter device of FIG. 2 if the star point SP is not connected directly to the nth switching elements.
  • the second inductive component L2 can be bridged as described with reference to FIG. 2, while the nth inductive component can be bridged as described with reference to FIG. 1.
  • the arrival The number of possible interconnections remains unchanged with respect to the filter device from FIG. 2.
  • such embodiments can also be used for single-phase energy networks.
  • the requirements for the switching elements for detuning the resonance frequency are lower than with other concepts. This is essentially achieved by dividing the inductive components into the first inductive component on the network side to form the capacitive component and the second inductive component at the star point. Particularly for filter devices for medium or high voltage networks, significant savings can be achieved by using low voltage switching elements. Furthermore, the improved concept allows existing filter circuits to be retrofitted with a throttle arrangement in order to obtain a filter device according to the improved concept.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)

Abstract

Un dispositif de filtrage comprend un composant capacitif (C), un premier composant inductif (L1) et un second composant inductif (L2) pouvant être monté en série avec le composant capacitif (C) et le premier composant inductif (L1). Selon l'invention, le composant capacitif (C) est disposé entre le premier composant inductif (L1) et le second composant inductif (L2). Le dispositif de filtrage comprend en outre un branchement pour le branchement au réseau d'énergie. Le premier composant inductif (L1) est disposé entre le branchement et le composant capacitif (C). Selon l'invention, un dispositif de commutation (SV) est conçu pour ponter le second composant inductif (L1).
EP19794524.9A 2018-10-26 2019-10-24 Dispositif de filtrage pour un réseau d'énergie, utilisation d'un agencement de bobines et procédé de fonctionnement d'un dispositif de filtrage Withdrawn EP3871306A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018126742.8A DE102018126742A1 (de) 2018-10-26 2018-10-26 Filtervorrichtung für ein Energienetz, Verwendung einer Drosselanordnung und Verfahren zum Betrieb einer Filtervorrichtung
PCT/EP2019/079046 WO2020084064A1 (fr) 2018-10-26 2019-10-24 Dispositif de filtrage pour un réseau d'énergie, utilisation d'un agencement de bobines et procédé de fonctionnement d'un dispositif de filtrage

Publications (1)

Publication Number Publication Date
EP3871306A1 true EP3871306A1 (fr) 2021-09-01

Family

ID=68344858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19794524.9A Withdrawn EP3871306A1 (fr) 2018-10-26 2019-10-24 Dispositif de filtrage pour un réseau d'énergie, utilisation d'un agencement de bobines et procédé de fonctionnement d'un dispositif de filtrage

Country Status (3)

Country Link
EP (1) EP3871306A1 (fr)
DE (1) DE102018126742A1 (fr)
WO (1) WO2020084064A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131815B1 (fr) * 1983-07-13 1986-09-03 BBC Aktiengesellschaft Brown, Boveri & Cie. Dispositif pour moteur à courant alternatif
SE501786C2 (sv) * 1993-09-20 1995-05-15 Asea Brown Boveri Förfarande för övervakning och styrning av en till ett elektriskt kraftnät ansluten anläggningsdel
GB0004885D0 (en) * 2000-03-01 2000-04-19 Alstom Improvements in and relating to filers and filter components
EP3065247B1 (fr) * 2015-03-05 2017-05-10 "Condensator Dominit" Dr. Christian Dresel Gesellschaft für Leistungselektronik, Energietechnik und Netzqualität mbH Filtre passif pour réseau AC perturbé
WO2017158783A1 (fr) * 2016-03-17 2017-09-21 三菱電機株式会社 Dispositif de conversion de puissance et dispositif de climatisation l'utilisant

Also Published As

Publication number Publication date
DE102018126742A1 (de) 2020-04-30
WO2020084064A1 (fr) 2020-04-30

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