EP2276046B1 - Switching device with thermal balancing equipment - Google Patents

Switching device with thermal balancing equipment Download PDF

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Publication number
EP2276046B1
EP2276046B1 EP20090165538 EP09165538A EP2276046B1 EP 2276046 B1 EP2276046 B1 EP 2276046B1 EP 20090165538 EP20090165538 EP 20090165538 EP 09165538 A EP09165538 A EP 09165538A EP 2276046 B1 EP2276046 B1 EP 2276046B1
Authority
EP
European Patent Office
Prior art keywords
conductor part
region
switching device
heat pipe
pipe arrangement
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
EP20090165538
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2276046A1 (en
Inventor
Matthias Kudoke
Michael Boesch
Rene Kallweit
Walter Holaus
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP20090165538 priority Critical patent/EP2276046B1/en
Priority to KR1020100066466A priority patent/KR20110007041A/ko
Priority to CN201010236523.8A priority patent/CN101958200B/zh
Publication of EP2276046A1 publication Critical patent/EP2276046A1/en
Application granted granted Critical
Publication of EP2276046B1 publication Critical patent/EP2276046B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/62—Heating or cooling of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H01H2009/523—Cooling of switch parts by using heat pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements

Definitions

  • the invention relates to a switching device, in particular for gas insulated switch gears, a medium or high voltage substation and a thermal balancing method.
  • a switching device for high current switching is known for example from EP 1 863 052 A1 .
  • Within a common housing there are arranged two conductor parts. Said conductor parts are electrically connectable to each other.
  • the two conductors are arranged in a common housing that is filled with insulating gas. It is known for such switching devices to perform an electrical connection between the two conductor parts by means of a movable conductor.
  • the problem is that due to different cross-sectional areas, resistances and distribution of current density, an unequal temperature distribution occurs. In particular in an area near the so-called nominal current contact of a circuit-breaker, a temperature rise will occur. As particularly this region has a larger distance to a heat sink such as the housing for example, dissipating heat might be problematic.
  • US-A-3662137 discloses a switching device including a first conductor part being electrically connectable to a second conductor part, the first conductor part and the second conductor part being arranged in an open volume inside a housing which is filled with an insulating medium.
  • the switching device includes a first conductor part and a second conductor part being electrically connectable.
  • the first and second conductor part are arranged in a volume of a housing which is filled with an insulating gas as insulating medium.
  • the term conductor part is to be understood hereinafter broadly as an electrically active part exposed to at least one of a high voltage or a high current.
  • a first region of said first conductor part is connected to a second region of said first conductor part by means of a heat pipe arrangement, such that a thermal connection between the first region and the second region is formed by at least one heat pipe arrangement.
  • the second region is located at a distance from the first region, such that the second region is located offset of the first region with respect to a direction of a current.
  • the first and second region of said first conductor part are at different temperature levels when a current flow, in particular a nominal current flow, traverses the switching device along a current path during the operating state of the switching device.
  • a current flow in particular a nominal current flow
  • the heat pipe arrangement will improve the temperature distribution of the switching device.
  • conduction of the heat generated inside the switching device is not only performed by thermal conduction within the conductor part itself and convective flow of heat but is significantly enhanced by means of the heat pipe arrangement. Temperature hotspots are avoided and a larger area can effectively contribute to heat dissipation.
  • a medium or high voltage substation according to claim 14, in particular gas insulated substations, comprising at least one switching device as described before.
  • the thermal balancing method comprises the following steps.
  • a first conductor part and a second conductor part are provided in a connectable manner inside a volume within a housing which is filled with an insulating medium.
  • a thermal connection between a first region of the first conductor part and a second region of the second conductor part is provided.
  • the second region is located at a distance from the first region and the first and second region of said first conductor part are at different temperature levels when a current flow traverses the switching device along a current path during an operating state of the switching device.
  • a working medium is evaporated in the at least one heat pipe arrangement.
  • the phase transition temperature of the working medium inside the heatpipe arrangement is preferably about ninety degree Celsius to one hundred fifteen degree Celsius.
  • the working medium is then cooled down at a second region and condenses again.
  • the first region is cooled down in the operating state of the switching device by means of the at least one thermal connection formed by at least one heat pipe arrangement and the second region is heated up.
  • the heat pipe arrangement will improve the temperature distribution of the switching device.
  • a heat pipe arrangement within the meaning according to the present invention is any kind of closed volume connecting two areas being at different temperature levels.
  • the closed volume includes at least one capillary tube connecting the cold and hot end of the heat pipe arrangement.
  • a working medium inside the volume evaporates.
  • the vapor will flow to the cold end of the heat pipe arrangement where it condenses. After condensation of the vapor, the liquid will be transferred back to the hot end by means of the capillary tube.
  • Such heat pipe arrangements allow although functioning pretty similar to thermosyphons an arrangement in any orientation.
  • the hot regions are near the electrical contact between the first and second conductor part.
  • the first and second region of the second conductor part are also at different temperature levels when a nominal current flows during operation of the switching device.
  • both of the conductor parts show an improved temperature distribution due to their respective heat pipes, the compensation of temperature differences is further improved.
  • the integration into the inside volume of the hollow conductor part contributes to a small overall size of the switching device. In particular, housings which are already used can be used in the future as well without the need of a new design.
  • the at least one heat pipe arrangement and/or at least one further heat pipe arrangement is/are mainly arranged on a first or a second side of a plane running through a longitudinal axis of the first and/or second conductor part, in particular through a longitudinal axis defined by the current path.
  • Mainly arranged means that at least sixty percent, preferably at least seventy percent, more preferably at least eighty percent, in particular hundred percent of the at least one heat pipe arrangement and/or at least one further heat pipe arrangement is/are arranged on the first or second side of said plane.
  • the at least one heat pipe arrangement and/or at least one further heat pipe arrangement is/are arranged at the upper side in a mounting position of the switching device where a longitudinal axis corresponding to a current path is orientated horizontally.
  • the highest temperature appears near movable parts of the electrically conductive connection between the first conductor part and the second conductor part
  • the at least one electrically conductive connection allows for carrying a nominal current in the operating state of the switching device.
  • Such a heat dissipation device or heat sink can be any element which is suitable for dissipating heat to the environment.
  • This can either be a further conductor being in electrical and thermal connection to the conductor part, a cooling element or the housing if the switching device is a so-called gas insulated switch gear.
  • heat will be transferred to the housing by convective flow of heat from the conductor part by means of the insulating gas.
  • the heat is dissipated by the housing of the switching device.
  • the application of the present invention is in particular advantageous for use in gas insulated switch gear.
  • the switching device thus includes preferably at least a circuit-breaker and at least one disconnector.
  • Gas insulated switch gears are commonly known for use in high power circuits for switching currents of e. g. up to 5,000 ampere. It is advantageous that the at least one heat pipe arrangement and/or the at least one further heat pipe arrangement is/are electrically on high voltage or on high-current path in the operating state of the switching device. Since, the heat pipe arrangements connect conductor parts at the same potential, they can be made off cheap electrically conductive materials like copper which has good heat transportation characteristics and do not have to insulate.
  • Gas insulated switch gears commonly have conductor parts which are basically shaped like a hollow cylinder.
  • the at least one heat pipe arrangement and/or the at least one further heat pipe arrangement arranged inside such hollow cylinders are advantageously basically shaped as a hollow truncated cone or a segment thereof.
  • As a connection between the first conductor part and the second conductor part is performed by a movable conductor arranged inside one of the hollow cylinders, this improves space efficiency of the switching device.
  • one wider end gives the opportunity to arrange components of the driving mechanism of a movable conductor inside that area.
  • the at least one heat pipe arrangement and/or the at least one further heat pipe arrangement includes/include a plurality of separate tube-like pipes that are in particular distributed alongside the circumference of the conductor part.
  • the at least one heat pipe arrangement and/or the at least one further heat pipe arrangement comprises/comprise at least one essentially tubular heat pipe with its evaporator side and its condenser side being closed for fluidly sealing the at least one heat pipe. It is in particular advantageous that the evaporator and condenser side is closed respectively by squeezing the at least one essentially tubular heat pipe and that the squeezed ends constitute a flange for fixing said heat pipe to the first and second conductor part respectively.
  • a simplified illustration of a gas insulated switch gear 1 of a medium or high voltage substation for example or as a switching device is shown partly as a cross-sectional view.
  • the gas insulated switch gear 1 comprises at least one circuit-breaker 2 for connecting or disconnecting two ends of the gas insulated switch gear 1 electrically.
  • the gas insulated switch gear 1 as disclosed in fig. 1 is for switching current of one phase only. In an operating state the connection is established as illustrating in fig. 1 .
  • the gas insulated switch gear 1 as illustrated in fig. 1 discloses in addition to the circuit-breaker 2 a first disconnector 3 and a second disconnector 4.
  • the first and second disconnector 3, 4 are provided for maintenance operation to ensure that a disconnected side is voltage-free.
  • Switching during normal operation of a gas insulated switch gear 1 integrated in a system is performed by establishing an electrically conductive connection between a first conductor part 7 and a second conductor part 8. Between first conductor part 7 and second conductor part 8, an insulating part 10 is arranged. As it will be apparent from more detailed fig. 3 which will be described hereinafter, inside first conductor part 7 and insulating part 10, a movable conductor is arranged. The movable conductor is in a permanent electrical connection with first conductor part 7 and can be moved in an axial direction in order to establish an electrically conductive connection with second conductor part 8.
  • a driving means 9 is arranged outside of a housing 6 and able to move the movable conductor in the axial direction.
  • Housing 6 is comprised of a plurality of sections which are connected to each other. The inner volume established by the plurality of the sections of housing 6 is filled with an insulating gas.
  • Heat pipes 18.1, 18.2, 19.1, 19.2, 27.1 and 27.2 are arranged as heat pipe arrangements 18, 19 and 27 inside the conductor parts 7, 8 of the circuit-breaker 2 and the conductor part of the disconnector 3 according to the invention, which will be described later with the more detailed fig. 3 and 4 .
  • Fig. 2 shows a temperature profile along the current path in the gas insulated switch gear 1 and indicated by the dash-dotted line 5 in fig. 1 .
  • Dashed line 11 is a temperature profile of a gas insulated switch gear 1 without the present invention. The dashed line 11 shows that there are some regions A, B and C with particularly high temperatures.
  • a temperature profile when using the present invention in the gas insolated switch gear 1 of fig. 1 is shown by solid line 12. On the one hand, it can be seen that the temperature distribution is more equal and on the other hand also lower maximum temperatures occur. This results in an extended range for safe use of the gas insolated switch gear 1.
  • a cross-section through an exemplary circuit-breaker 2 of fig. 1 is shown in fig. 3 .
  • the circuit-breaker 2 comprises as already said on its respective in-and-out-end a first conductor part 7 and a second conductor part 8.
  • the first conductor part and the second conductor part have a respective front end 15, 17 that are opposed to each other. Between the front ends 15, 17 the insulating part 10 is arranged.
  • the movable conductor 12 as wells as first conductor part 7 and second conductor part 8 which are arranged fixedly inside housing 6 has a basically circular cross-section.
  • the movable conductor 12 is supported by a movable slide 13.
  • the movable slide 13 is arranged inside first conductor part 7 and slides on conductive pole 28 in a left and right direction in fig. 3 .
  • the diameter of the largest part of the movable conductor 12 corresponds to a diameter of contacting element 16 which is fixed to front end 15 of first conductor part 7 constituting a first region 7.1. In a direction towards second conductor part 8, a radial dimension of movable conductor 12 is reduced.
  • movable conductor 12 consists of a conical part and two cylindrical parts at the first and second ends. While first cylindrical part is in contact with contacting element 16, second cylindrical part is electrically connectable to its counterpart 14.
  • Counterpart 14 is supported in a fixed manner to front end 17 of second conductor part 8 and also denoted as first region 8.1 of second conductor part 8.
  • first conductor part 7 and second conductor part 8 are connected to each other electrically conductive, the second cylindrical part of the movable conductor 12 touches counterpart 14 in the shown way.
  • movable slide 13 is pulled to the left thereby disconnecting movable contact 12 and counterpart 14 first.
  • Movable contact 12 and counterpart 14 together constitute so-called nominal current contact.
  • conductive pole 28 is also and independently of movable slide 13 pulled to the left.
  • First conductor part 7 and second conductor part 8 with respect to their length have a relatively constant ohmic resistance as well as cross-sectional area. But as the nominal current is flowing through movable contact 12 and counterpart 14 when the switch is closed the current flows also through areas with a higher ohmic resistance. This is in particular the first region 7.1 around contact 16 on the side of first conductor part 7 and counterpart 14 as first region 8.1 on the side of second conductor part 8. Thus, in regions with a higher ohmic resistance, heat is generated which has to be conveyed and finally dissipated. Thus, the point of first conductor part 7 with highest temperature is located near the front end 15 in the first region 7.1. This corresponds to point B with respect to figures 1 and 2 .
  • the hollow first conductor part 7 comprises a heat pipe arrangement 18.
  • the heat pipe arrangement 18 is comprised of two heat pipes 18.1 and 18.2. More pipes can be arranged and be distributed over the circumference of first conductor part 7.
  • the hot end of the heat pipe arrangement 18 is thermally conductive connected to first region 7.1 on an inner radial step which is supposed to support contacting element 16. This inner radial step is thus a first region 7.1 that is near the electrically conductive connection to second conductor part 8, in the shown embodiment of movable conductor 12.
  • This end of the heat pipe arrangement 18 is the evaporator side.
  • the opposite end of the heat pipe arrangement 18 is the condenser side which is connected thermally to a second, cooler region 7.2 of the first conductor part 7 located at a distance from the first region 7.1.
  • the second conductor part 8 surrounds a further heat pipe arrangement 19, too, comprising at least two separate heat pipes 19.1 and 19.2.
  • the evaporator sides of heat pipes 19.1 and 19.2 are connected to counterpart 14 which is part of second conductor part 8 and constitutes a first region 8.1 of second conductor part 8.
  • the condenser sides of pipes 19.1 and 19.2 are connected to a second region 8.2 being offset to first region 8.1 and being cooler than the first region 8.1.
  • heat pipe arrangements 18 and 19 improve heat flow from hotspots of first conductor part 7 and second conductor part 8 to respective cooler areas of the same conductor parts 7 or 8.
  • connecting contacts 201.1 and 201.2 of a circuit-breaker 2 are arranged contacting the first and second conductor part 7 and 8 in an angulated orientation pointing away from the contacting parts 12 and 14 of the circuit-breaker 2.
  • the connecting contacts 201.1 and 201.2 are arranged at an upper side of the conductor parts 7 and 8 and are traversed such through the housing 6, that the volume inside the housing 6 is still insulated from the outside.
  • the connecting contacts 201.1 and 201.2 are used for supporting/removing the current to/from the conductor parts 7 and 8 and also to conduct away heat produced in the conducting parts 7 and 8.
  • a cross-section of a disconnector 3 is shown.
  • the disconnector 3 comprises a first conductor part 70 and a second conductor part 80 which is the so-called disconnector contact.
  • First conductor part 70 and second conductor part 80 are similar to the ones of the circuit breaker of fig. 3 and already explained with respective fig. 3 for the circuit-breaker 2.
  • First and second conductor part 70 and 80 are arranged fixedly with respect to housing 6.
  • First conductor part 70 and second conductor part 80 are hollow and may be connected to each other by means of a further movable conductor.
  • Further movable conductor comprises two conductive hollow cylinders 22 and 23. The conductive cylinders 22 and 23 are fixed to a spindle nut 24.
  • Spindle nut 24 is arranged in relationship to spindle 21 which can be operated from outside housing 6. When turning spindle 21, spindle nut 24 and consequently conductive elements 22 and 23 can be moved in the axial direction of spindle 21.
  • the spindle nut 24 is supported by guiding rods 25 and 26.
  • Conductive cylinders 22 and 23 are arranged on opposite sides of spindle 24. While conductive cylinder 22 is electrically conductive in contact with a further contacting element 160 arranged at an inner edge of first conductor part 70 constituting a first region 70.1, further conductive cylinder 23 may be in contact with a ground contacting element 161 being arranged at an opposite end of first conductor part 70. When spindle 21 is turned clockwise, spindle nut 24 will be moved to the left side in the drawing until ground contacting elements 161 are in connection with grounding contact 162 by further conductive cylinder 23. Grounding contact 162 may be also including a special contacting element being in permanent contact with housing 6. It is evident that a similar contacting element 164 is arranged at second conductor element 80.
  • Heat pipe arrangement 27 at least consisting of two separate heat pipes 27.1 and 27.2 in the drawing is connected with its evaporator side to the first region 70.1 of first conductor part 70 being near to contacting element 160.
  • Condenser side of the heat pipe arrangement 27 on the other hand is thermally connected to first conductor part 70 at a point distant to the first region 70.1 and constituting a cooler second region 70.2.
  • the cooling performance of the heat pipe arrangement 27 can be improved by supporting the first conductor part 70 at the outside wall with an additional cooling element 200 near the second region 70.2 of the first conductor part 70. Consequently, the heat transported to the second region by the heat pipe arrangement 27 from the connecting element 160 can be efficiently dissipated.
  • heat pipe arrangement 29 at least consisting of two separate heat pipes 29.1 and 29.2 in the drawing is connected with its evaporator side to the first region 80.1 of second conductor part 80 being near to contacting element 164 of the second conductor part 80.
  • Condenser side of the heat pipe arrangement 29 on the other hand is thermally connected to second conductor part 80 at a point distant thereto constituting a cooler second region 80.2.
  • the first region 80.1 is displaced about a distance from the second region 80.2 along the current path 5 for balancing the temperature between the first and second region 80.1 and 80.2.
  • the heat pipe arrangement 30 consists of a plurality of separate heat pipes 30.1 to 30.5.
  • the separate heat pipes 30.1 to 30.5 are connected to the first conductor part 7, e.g. by means of a cable shoe.
  • the cable shoe is built preferably by pressing the ends of the tube-like heat pipes and inserting at least one hole. Thereby, easy mounting of the heat pipe arrangement 30 is achieved.
  • fig. 5 there is shown a cross-sectional view across the line A-A as shown in fig. 3 .
  • the separate heat pipes 30.1 to 30.5 are connected to the first conductor part 7, e.g. by means of a cable shoe.
  • the cable shoe is built preferably by pressing the ends of the tube-like heat pipes and inserting at least one hole.
  • the evaporator side of the heat pipe arrangement 30 is connected to a radial step at the front end 15 of first conductor part 7 all of the separate heat pipes 30.1 to 30.5 are arranged alongside a lateral area of a hollow truncated cone.
  • the plurality of separate heat pipes 30.1 to 30.5 is mainly arranged on a first or a second side of a plane running through a longitudinal axis of the first conductor part 7.
  • Mainly in this context means that at least sixty percent, in particular at least seventy percent, in particular at least eighty percent, at least ninety percent, in particular hundred percent of the pipes 30.1 to 30.5 as shown are on said side.
  • this is an upper half of the inner volume of the first conductor part 7 if the longitudinal axis is arranged in a horizontal direction during operation. Even more preferably, the plurality of pipes 30.1 to 30.5 are arranged with the same distance to each other.
  • Fig. 6 shows another preferred embodiment of a heat pipe arrangement.
  • the heat pipe arrangement 31 this time is a segment of a hollow truncated cone which is shown in fig. 7 in a perspective view.
  • the heat pipe arrangement 31 itself extends alongside to a segment of the lateral area of the hollow truncated cone with its narrower end directed to the hot side, i.e. to the first region 7.1.
  • flanges 32, 33 At both ends, there are arranged flanges 32, 33 respectively. Within the flanges, holes have been arranged in order to join the heat pipe arrangement 31 to first conductor part 7.
  • Flange 32 and flange 33 are oriented at right angles to each other.
  • Fig. 8 shows a cross-section in the longitudinal direction of heat pipe arrangement 31.
  • the flanges 32, 33 are only made of plate material in order to join the heat pipe 31 to first conductor part 7. It is evident that the particular construction of the heat pipes can easily be adapted in order to join the heat pipe to second conductor part 8.
  • a material with capillary tubes 36 is arranged within the volume enclosed by the heat pipe 31 with top plate 34 and bottom plate 35 made of copper e.g., a material with capillary tubes 36 is arranged. If heat is applied at flange 32, liquid which fills the volume will evaporate at the hot end.
  • the vapor will flow to the cold end of the heat pipe arrangement 31.
  • the liquid At the cold end which is the side of flange 33, the liquid will condense back again and will be transported by capillary forces inside material 36 to the hot end again.
  • FIG. 9 another cross-sectional drawing is shown. This time the drawing is intended to illustrate the arrangement in the disconnector 3 of fig. 4 . Contrary to the disconnector 3 shown in fig. 4 , spindle nut 24 is arranged on the left end side of fig. 4 . Thus, in the cross-sectional drawing, the spindle nut 24 can be seen. In order to avoid unintended rotation of the spindle nut 24, spindle nut 24 is guided by three guiding rods 25, 26 and 37. The shape of spindle nut 24 is basically triangular with one angle being located at the top side. Thus, the pipes 38.1 to 38.4 of heat pipe arrangement 38 which are similar to the pipes 30.1 to 30.5 of fig. 5 are arranged in an upper left side or an upper right side according to the cross-sectional drawing.
  • a housing of the heat pipe arrangements 18, 19, 27, 29, 30, 31, 38 are electrically conductive such that cheap metal materials can be used for producing the heat pipe arrangements 18, 19, 27, 29, 30, 31, 38.
  • the temperature of a working medium of the heat pipe arrangements 18, 19, 27, 29, 30, 31, 38 is at the evaporating side in a range of about 90 to about 115 °C, preferably about 105 °C, and at a condensing side in a range of about 50 °C to about 75 °C, preferably about 65 °C.
  • the illustrated embodiments regarding the heat pipes are chosen only for illustration reasons.
  • the reservoir which is the inner volume of the heat pipe arrangement is enlarged compared to the segment of truncated cone shown in fig. 6 and compensation drift is further enhancing an equal temperature distribution.
  • the heat transfer to housing 6 is performed by convective flow of heat.
  • the illustration is based on a dead tank arrangement but is also applicable for free air contacting.

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  • Gas-Insulated Switchgears (AREA)
EP20090165538 2009-07-15 2009-07-15 Switching device with thermal balancing equipment Active EP2276046B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20090165538 EP2276046B1 (en) 2009-07-15 2009-07-15 Switching device with thermal balancing equipment
KR1020100066466A KR20110007041A (ko) 2009-07-15 2010-07-09 열적 균형 설비를 갖는 스위칭 디바이스
CN201010236523.8A CN101958200B (zh) 2009-07-15 2010-07-15 带有热平衡器具的开关装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090165538 EP2276046B1 (en) 2009-07-15 2009-07-15 Switching device with thermal balancing equipment

Publications (2)

Publication Number Publication Date
EP2276046A1 EP2276046A1 (en) 2011-01-19
EP2276046B1 true EP2276046B1 (en) 2014-09-24

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ID=41279195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090165538 Active EP2276046B1 (en) 2009-07-15 2009-07-15 Switching device with thermal balancing equipment

Country Status (3)

Country Link
EP (1) EP2276046B1 (zh)
KR (1) KR20110007041A (zh)
CN (1) CN101958200B (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2485353A1 (de) * 2011-02-03 2012-08-08 ABB Technology AG Elektrische Verbindungsanordnung für ein Stromverteilungssystem einer Hoch- und/oder Mittelspannungsanlage
CN102568871B (zh) * 2012-03-05 2014-03-05 上海化工研究院 一种空气强冷式直流低压大电流开关
WO2013169774A2 (en) 2012-05-07 2013-11-14 Phononic Devices, Inc. Thermoelectric heat exchanger component including protective heat spreading lid and optimal thermal interface resistance
US20130291555A1 (en) 2012-05-07 2013-11-07 Phononic Devices, Inc. Thermoelectric refrigeration system control scheme for high efficiency performance
KR200485206Y1 (ko) * 2013-07-08 2017-12-07 엘에스산전 주식회사 가스절연개폐장치
US10458683B2 (en) 2014-07-21 2019-10-29 Phononic, Inc. Systems and methods for mitigating heat rejection limitations of a thermoelectric module
US9593871B2 (en) 2014-07-21 2017-03-14 Phononic Devices, Inc. Systems and methods for operating a thermoelectric module to increase efficiency

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662137A (en) * 1970-01-21 1972-05-09 Westinghouse Electric Corp Switchgear having heat pipes incorporated in the disconnecting structures and power conductors
US4005297A (en) * 1972-10-18 1977-01-25 Westinghouse Electric Corporation Vacuum-type circuit interrupters having heat-dissipating devices associated with the contact structures thereof
EP1667300B1 (de) * 2004-12-03 2014-03-19 ABB Research Ltd. Hochspannungsanlage und Hochleistungsschalter mit Kühlung
EP1672655A1 (de) * 2004-12-20 2006-06-21 Abb Research Ltd. Vakuumschalter mit grosser Stromtragfähigkeit
ATE509359T1 (de) 2006-05-29 2011-05-15 Abb Technology Ag Behälter für gasisolierte leistungsschalter

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EP2276046A1 (en) 2011-01-19
CN101958200A (zh) 2011-01-26
CN101958200B (zh) 2015-07-08
KR20110007041A (ko) 2011-01-21

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