EP3363027B1 - Selbstgeführter stromrichter mit einer anordnung mit einem elektrischen widerstand und überbrückungsvorrichtung - Google Patents

Selbstgeführter stromrichter mit einer anordnung mit einem elektrischen widerstand und überbrückungsvorrichtung Download PDF

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Publication number
EP3363027B1
EP3363027B1 EP15802055.2A EP15802055A EP3363027B1 EP 3363027 B1 EP3363027 B1 EP 3363027B1 EP 15802055 A EP15802055 A EP 15802055A EP 3363027 B1 EP3363027 B1 EP 3363027B1
Authority
EP
European Patent Office
Prior art keywords
resistor
self
power converter
housing
insulator
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.)
Active
Application number
EP15802055.2A
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German (de)
English (en)
French (fr)
Other versions
EP3363027A1 (de
Inventor
Maik Behne
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to PL15802055T priority Critical patent/PL3363027T3/pl
Publication of EP3363027A1 publication Critical patent/EP3363027A1/de
Application granted granted Critical
Publication of EP3363027B1 publication Critical patent/EP3363027B1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C13/00—Resistors not provided for elsewhere
    • H01C13/02—Structural combinations of resistors

Definitions

  • the invention relates to a self-commutated converter with an arrangement with an electrical resistor, which is arranged in a gas-tight housing.
  • Such resistance is from the German published application DE 10 2014 205 256 A1 known.
  • a gas-insulated surge arrester is known.
  • a varistor and an additional impedance are arranged in a gas-tight housing.
  • the additional impedance can be bridged electrically by means of a mechanically actuated switching arrangement.
  • Self-commutated converters often have energy storage devices (e.g. capacitors) that have to be precharged to a certain voltage at the start of converter operation.
  • energy storage devices e.g. capacitors
  • the energy stores are often precharged via a resistor.
  • a high voltage resistor is used for pre-charging.
  • the resistor can be designed as a gas-insulated resistor and can therefore be arranged in a gas-tight housing.
  • the invention has for its object to provide a self-commutated converter with an arrangement that can be implemented inexpensively.
  • An arrangement is disclosed with an electrical resistor, which is arranged in a gas-tight housing, a bridging device for (electrically) bridging the resistor being arranged in the housing.
  • the bridging device can also be referred to as a short-circuiting device for (electrically) short-circuiting the resistor.
  • the housing can be filled with an electrically insulating gas. It is advantageous that the electrical resistance and the bridging device are arranged in a common housing. As a result, only a single housing is required for the electrical resistance and for the bridging device, and the arrangement can be implemented in a space-saving and cost-effective manner.
  • the arrangement can be designed such that the bridging device is electrically connected in parallel with the resistor.
  • the arrangement can also be designed in such a way that the housing is a rotationally symmetrical housing (in particular a tubular housing) which can be connected to a further housing on a first end side and on a second end side.
  • the first end face and the second end face represent a first axial end side and a second axial end side of the housing.
  • Rotation-symmetrical housings are particularly in the area of the High-voltage technology is advantageous, since excessive field strengths at corners or edges are avoided.
  • the housing can each be connected to a further housing and can thus be integrated, for example, in a gas-insulated switchgear.
  • the arrangement can be configured in such a way that the resistor is held by a first insulator, which electrically insulates the resistor from the housing.
  • the arrangement can also be configured such that the resistor is held by a second insulator, which electrically insulates the resistor from the housing.
  • the arrangement can also be configured such that the bridging device is held by the first insulator and / or by the second insulator.
  • the first insulator and the second insulator therefore each have a double function: they serve as an electrical insulator for the first, in order to electrically isolate the resistor and the bridging device from the housing.
  • the first insulator and the second insulator serve as a holding device to hold the resistor and the bridging device in the housing, i. H. to determine the relative position of the resistor and the bridging device relative to the housing.
  • the arrangement can be configured such that the first insulator is a first disk-shaped insulator and / or the second insulator is a second disk-shaped insulator.
  • the arrangement can be configured such that the first insulator delimits the first end face of the housing and / or the second insulator delimits the second end face of the housing.
  • the arrangement can also be designed such that a first connection of the arrangement extends through the first insulator and / or a second connection of the arrangement extends through the second insulator.
  • the arrangement can be configured such that the bridging device has a fixed contact and a moving contact.
  • the fixed contact and the moving contact can be made rotationally symmetrical.
  • the arrangement can also be configured in such a way that the moving contact is a sliding moving movement contact.
  • the arrangement can be made particularly compact by means of such a sliding-movable moving contact.
  • the arrangement can also be designed such that the resistor is a columnar resistor and the moving contact is displaceable on a path that runs parallel to the resistor. This also results in a particularly compact configuration of the arrangement.
  • the first connection can be electrically connected to the fixed contact and to a first resistance connection and the second connection can be electrically connected to the moving contact and to a second resistance connection.
  • the arrangement can have a drive, in particular a motor drive, for the moving contact.
  • the arrangement can be designed such that the drive is installed at earth potential and the arrangement has an electrically insulating component for transmitting a drive movement to the moving contact.
  • the drive movement is thus transmitted from the drive to the moving contact by means of the electrically insulating component.
  • the installation of the drive at ground potential is particularly advantageous because this drive can then be controlled with little effort (and therefore inexpensively) and supplied with the electrical energy required for the drive.
  • the arrangement can also be configured such that the housing has a gas space for accommodating an electrical one insulating gas limited, and the resistor and the bridging device are arranged in the (common) gas space.
  • the arrangement of the resistor and the bridging device in the common gas space enables a particularly space-saving and cost-effective implementation of the arrangement.
  • the arrangement can be configured such that the resistor is a gas-insulated resistor, in particular a gas-insulated high-voltage resistor.
  • the arrangement can be configured such that the resistor has a series connection of disk-shaped resistor elements.
  • disk-shaped resistor elements in particular high-voltage resistors with a wide variety of resistance values can be realized by a different number of these resistance elements being electrically connected in series in the case of the various high-voltage resistors.
  • the arrangement can be a precharging arrangement for precharging an energy store of a self-commutated converter.
  • Claimed in claim 1 is a self-commutated converter with an arrangement according to one of the variants described above.
  • Such a converter can be part of a high-voltage direct current energy transmission device, for example.
  • the resistor 3 is a gas-insulated resistor 3, in particular a gas-insulated high-voltage resistor 3.
  • high voltage is understood to mean in particular the voltage range> 40 kV.
  • the columnar resistor 3 has a plurality of disk-shaped resistance elements 10, which are electrically connected in series.
  • the resistor 3 and the bridging device 5 are located in the interior of a housing 13.
  • This housing 13 is designed to be rotationally symmetrical and represents a tubular housing 13.
  • the housing 13 is gas-tight.
  • the interior of the housing 13 can be filled with an electrically insulating gas (for example with sulfur hexafluoride SF 6 ) and is therefore also referred to as gas space 16.
  • the housing 13 is a pressure vessel that delimits the gas space 16.
  • the resistor 3 and the bridging device 5 are therefore located in the common gas space 16.
  • the housing 13 encapsulates the gas space 16 and can therefore also be referred to as an encapsulation housing 13.
  • On a first end face 19 of the housing and on a second end face 22 of the housing, the housing can each be connected to a further housing, for example by means of a flange. These further housings can each have the same or a different shape than the housing 13.
  • the first end face 19 forms a first axial end side of the housing 13; the second end face 22 forms a second axial end side of the housing 13.
  • a first disk-shaped insulator 25 delimits the first end face 19 of the housing 13; a second disk-shaped insulator 28 (disk insulator, post insulator) delimits the second end face 22 of the housing 13.
  • the first insulator 25 electrically insulates the resistor 3 and the bridging device 5 from the housing 13.
  • the first insulator 25 carries the resistor 3 and the bridging device 5 and thus defines the position of the resistor and the bridging device 5 in the housing 13.
  • the second insulator 28 (like the first insulator 25) also has an insulation function and a holding function for the resistor and the bridging device.
  • the first insulator 25 and the second insulator 28 can be made gas-tight or gas-permeable.
  • the bridging device 5 has a fixed contact 33 (fixed contact piece 33) and a moving contact 36 (movable contact piece 36).
  • the fixed contact 33 forms a counter contact to the moving contact 36.
  • the fixed contact 33 and the moving contact 36 are designed to be rotationally symmetrical.
  • the fixed contact 33 and the moving contact 36 consist, for example, of copper or aluminum.
  • the bridging device 5 is electrically connected in parallel with the resistor 3. This electrical parallel connection is designed such that the fixed contact 33 is electrically connected to a first connection 39 of the resistor 3 (first resistance connection 39).
  • the fixed contact 33 and the first resistance connection 39 are electrically connected to a first connection 42 of the arrangement 1.
  • the moving contact 36 is electrically connected to a second connection 45 of the resistor 3 (second resistance connection 45).
  • the moving contact 36 and the second resistance connection 45 are electrically connected to a second connection 48 of the arrangement 1.
  • the first connection 42 of the arrangement 1 passes through the first insulator 25; the second connection 48 of the arrangement 1 passes through the second insulator 28. This makes it possible to make electrical contact with the arrangement 1.
  • the first connection 42, the second connection 48 and the resistor 3 (or the closed bridging device 5) form a current path for the current flowing through the arrangement 1.
  • the sliding movable movement contact 36 can be displaced along a straight path 50 (displacement axis 50) which runs parallel to the columnar resistor 3.
  • the moving contact 36 In the illustrated first position of the bridging device, the moving contact 36 is spaced from the fixed contact 33: the bridging device 5 is therefore in an open state; The electrical resistance 3 acts between the first connection 42 and the second connection 48.
  • the moving contact 36 is moved along the path 50 until the moving contact 36 touches the fixed contact 33. More specifically, the moving contact 36 is displaced along the path 50 until a hollow cylindrical end of the moving contact 36 enters a hollow cylindrical recess in the fixed contact 33.
  • the resistor 3 is electrically bridged (electrically short-circuited) by means of the bridging device 5.
  • the resistor 3 is electrically bridged electrically or short-circuited.
  • the fixed contact 33 and the moving contact 36 are therefore components of a short-circuiting (bridging) switching element for temporarily shorting (bridging) the resistor 3.
  • the fixed contact 33 and the moving contact 36 temporarily form a short-circuiting current path which short-circuits (bridges) the resistor 3.
  • a drive 56 is used to move the moving contact 36 from its first position to its second position and vice versa.
  • the moving contact 36 is mechanically connected to the drive 56 via an insulating shaft 53 (insulating drive shaft 53).
  • This drive 56 of the moving contact 36 is a motor drive 56, which is arranged outside the housing 13.
  • the drive is installed at earth potential.
  • the drive movement is transmitted from the drive 56 to the moving contact 36 by means of the insulating shaft 53 (which represents an electrically insulating component 53). Since the drive 56 is arranged at earth potential, its electrical control and the supply of the drive 56 with electrical energy are comparatively simple and inexpensive.
  • the drive 56 and the insulating shaft 53 are only shown schematically in the exemplary embodiment.
  • a transmission (deflection transmission) used to convert the rotational movement of the insulating shaft 53 into a translatory (rectilinear) movement of the moving contact 36 is shown in FIG Figure 1 not shown.
  • the moving contact 36 and the fixed contact 33 have a sufficient erosion resistance, so that by means of the bridging device a residual current still flowing at the time of switching via the resistor (connected to an associated voltage drop via the resistor) can also be short-circuited.
  • the resistor 3 and the bridging device 5 form a structural unit.
  • the resistor 3 and the bridging device 5 form a resistor module with a bridging function.
  • the resistance 3 is an electrical resistance component 3, which has an ohmic resistance between the first resistance connection 39 and the second resistance connection 45.
  • the arrangement 1 can advantageously be used for precharging one or more energy stores of a self-commutated converter and therefore represents a precharge arrangement for precharging such an energy store.
  • FIG. 2 An embodiment of a high-voltage direct current transmission device 201 is shown, which has a first self-commutated converter 204 and a second self-commutated converter 207.
  • the DC voltage side of the first self-commutated converter 204 is connected to the DC voltage side of the second self-commutated converter 207 by means of a DC circuit 210 (high-voltage DC circuit 210).
  • the AC voltage side of the first converter 204 is electrically connected to a first three-phase AC network 217 via three arrangements 1 ′.
  • the AC voltage side of the second converter 207 is electrically connected to a second three-phase AC network 225 via three arrangements 1 ′′.
  • the DC circuit 210 has an arrangement 1 ′′ ′′.
  • each of the arrangements 1 ′, 1 ′′ and 1 ′′ ′′ has in particular a high-voltage resistor 3 and a bridging device 5.
  • the high-voltage direct current transmission device 201 electrical energy can be transmitted from the first AC network 217 via the DC circuit 210 to the second AC network 225 energy transfer in the opposite direction is also possible.
  • the first self-commutated converter 204 and the second self-commutated converter 207 each have a number of submodules 230. These submodules each contain an energy store 232 in the form of a capacitor 232.
  • the submodules can be used, for example, as half-bridge submodules or be designed as full-bridge submodules.
  • the two converters 204 and 207 are each designed as modular multilevel converters (known as such).
  • the arrangements 1 ′ and 1 ′′ on the AC voltage side and the arrangement 1 ′′ ′′ are provided on the DC voltage side.
  • the sub-modules 230 of the first converter 204 can be precharged from the first AC network 217 using the arrangements 1 ′;
  • the submodules 230 of the second converter 207 can be precharged from the second AC network 225 by means of the arrangements 1 ′′.
  • the bridging device 5 of the arrangement used for charging is in the open state (as it is shown in FIG Figure 2 are shown schematically).
  • the resistor 3 of the corresponding arrangement is bridged by means of the associated bridging device 5, so that the resistor is then electrically ineffective.
  • the arrangement described with the gas-insulated resistor and the bridging device thus represents a function-integrating module, in which the resistor and the switching device (bridging device) that short-circuit the resistor are arranged in a common closed gas space.
  • the arrangement described has a very compact design or construction. In particular, the arrangement with the resistor and the bridging device takes up less space than an independent resistor and an independent bridging device would require, which would be installed independently of one another and then connected. Overall, this results in an arrangement that can be implemented inexpensively and in a space-saving manner.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP15802055.2A 2015-11-26 2015-11-26 Selbstgeführter stromrichter mit einer anordnung mit einem elektrischen widerstand und überbrückungsvorrichtung Active EP3363027B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15802055T PL3363027T3 (pl) 2015-11-26 2015-11-26 Komutowany wewnętrznie przekształtnik z układem zawierającym rezystor elektryczny i urządzenie mostkowe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/077763 WO2017088923A1 (de) 2015-11-26 2015-11-26 Anordnung mit einem elektrischen widerstand und überbrückungsvorrichtung

Publications (2)

Publication Number Publication Date
EP3363027A1 EP3363027A1 (de) 2018-08-22
EP3363027B1 true EP3363027B1 (de) 2020-03-25

Family

ID=54754622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15802055.2A Active EP3363027B1 (de) 2015-11-26 2015-11-26 Selbstgeführter stromrichter mit einer anordnung mit einem elektrischen widerstand und überbrückungsvorrichtung

Country Status (4)

Country Link
EP (1) EP3363027B1 (zh)
CN (1) CN208954729U (zh)
PL (1) PL3363027T3 (zh)
WO (1) WO2017088923A1 (zh)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2466596B1 (de) * 2010-12-16 2013-08-28 ABB Research Ltd. Bauteil mit Überspannungsschutz und Verfahren zu dessen Prüfung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
WO2017088923A1 (de) 2017-06-01
CN208954729U (zh) 2019-06-07
EP3363027A1 (de) 2018-08-22
PL3363027T3 (pl) 2020-09-07

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