Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
  • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
  • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
  • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
  • H02B1/22—Layouts for duplicate bus-bar selection
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
  • H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
  • H02B5/06—Non-enclosed substations; Substations with enclosed and non-enclosed equipment gas-insulated
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49105—Switch making

Definitions

• aspects of the invention relate to a switching field for a high-voltage switchgear, in particular for a switchgear with a busbar.
• the panel has power switches, circuit breakers, and bus bar phase conductor sections. W e a d e c o v e p o rd e s a c e s a c e s a c e s a c e s a high-voltage switchgear with such a panel, and a method for erecting a high-voltage system.
• Switchgear plays an important role in energy networks that transport electrical energy from the power plant to the end user.
• Such switchgear include one or more busbars and panels that serve to switch incoming or outgoing lines of the power networks, for example, overhead power lines, switchably to the busbars or to switchably connect busbars to each other.
• Switching systems are subdivided into various voltages to be switched.
• High-voltage switchgears are considered here as switching systems with a rated voltage of at least 300 kV, in particular of at least 420 kV.
• gas-insulated switchgear is often used, where the conductors are surrounded by an inert gas such as SF6.
• the electrical components are arranged in a gas-tight housing (encapsulation), which defines a gas space for the protective gas.
• the high-voltage switchgear can be fundamentally introduced into two different types: on the one hand a type with a three-phase encapsulated busbar, ie the phase conductors for all three current phases are housed in a jointly encapsulated gas space, and on the other hand a type with a single-phase encapsulated busbar means that the individual phase conductors of the busbar, one for each of the three current phases usually occurring, at least partially have a single encapsulation and thus are separated from each other by housing sections.
• switchgear single-phase or three-phase encapsulated
• the choice of the respective type of switchgear is largely predetermined by the rated voltage to be switched: For example, for a rated voltage of at least 300 kV and especially of at least 420 kV predominantly switchgear with single-phase encapsulated busbar in question:
• the single-phase encapsulation allows a very effective shielding of the high voltages occurring.
• the construction of single-phase encapsulated switchgear is complex and space-consuming, since a separate housing for each phase conductor of the busbar must be provided. These housings must also have a certain volume to allow a sufficient distance of the conductors from the grounded housing parts, so that the risk of electrical breakdown is sufficiently reduced.
• a switch panel for a high voltage switchgear comprises a busbar, each having a busbar phase conductor of a first, second and third current Phase up.
• the switch panel comprises a gas-insulated circuit breaker of the first, second and third current phase, wherein the power switches are arranged parallel to each other along an x-direction.
• the switching field in each case comprises a circuit breaker of the first, second and third current phase, wherein the circuit breaker each have an isolating distance, and wherein the separating lines are arranged parallel to each other.
• the switch panel further comprises a first bus phase phase conductor portion of the first current phase and a second bus phase phase conductor portion of the second current phase, wherein the first and the second bus phase conductor portion parallel to each other along a transverse to x Extending direction extending y-direction.
• the panel further includes a bus bar terminal for connecting a third bus phase phase conductor portion of the third power phase, wherein the first and second bus bar phase conductor portion and the bus bar terminal via the circuit breaker of the respective power phase with the power switch electrically connectable to the respective current phase, wherein the second bus-phase conductor section defines a boundary plane as the plane which extends in the x- and y-direction and includes a center of the second busbar phase conductor section, and wherein each of the three separation sections is at least partially disposed on the side of the boundary plane facing the three circuit breakers.
• a method for setting up a high-voltage switchgear is proposed.
• the activity of the device includes, for example, the manufacture, upgrade, and / or repair of such a switchgear.
• the method comprises providing a preassembled panel, in particular of any switch panel described herein, in a standardized shipping container located remotely from a location for the high voltage switchgear, the panel having a first bus phase conductor portion of the first current phase and a second Bus bar phase conductor portion of the second current phase has.
• the switching field, and in particular busbar phase conductor sections for the first and the second of the current phases and a busbar connection for the third current phase of the switching field has a height less than the inner height of the transport container.
• the method further comprises transporting the panel in the transport container to the location for the high voltage substation.
• the switching field is at least partially filled with protective gas during transport.
• the method comprises connecting a third bus phase phase conductor portion of the third current phase to a busbar connection of the switching field, so that the busbar phase conductor section of the third current phase has a height greater than an internal height of the transport container.
• numbers such as, for example, two bus bar phase conductor sections are to be understood basically to provide at least two bus bar phase conductor sections; therefore, e.g. Also be provided more than two busbar phase conductor sections.
• Fig. 1 shows a perspective view of a switch panel according to an embodiment of the invention
• Figs. 2a to 2c show side cross-sectional views of the panel of Fig. 1; and Fig. 3 shows a frontal view of the switch panel of Figs. 1 to 2c.
• a switching field 1 according to an embodiment of the invention will be described with reference to FIG.
• a button is defined herein to be for each of e.g. three power phases at least each comprises a power switch, a circuit breaker and a bus bar phase conductor sections and / or a bus bar connection for connection to a bus bar phase conductor.
• the control panel does not yet have to be connected to the busbar.
• the switching panel 1 shown in Fig. 1 is intended to be coupled to a double busbar, wherein the double busbar comprises a first busbar and a second busbar each having three phase conductors. These phase conductors are designed to carry a respective current phase of three-phase current. Panel 1 includes portions of these phase conductors: Namely, respective busbar modules 170, 270, and 370 are shown with corresponding busbar phase conductor portions 174, 274, and 374 for the first busbar. Likewise are for the second busbar corresponding busbar modules 190, 290 and 390 are shown with respective busbar phase conductor sections 194, 294 (see FIG. 2b) and 394. These busbar phase conductor sections are single-phase encapsulated in the respective busbar modules.
• the bus bar modules 170, 270, 370 and 190, 290 and 390 have terminals 172, 272, 372, 192 (see Fig. 2a), 292 and 392 for connecting further portions of the respective bus bar phase conductor.
• further sections of the busbar phase conductor are shown which are connected to some of these connections:
• a module 390 ' is connected to a further phase conductor.
• the switching field 1 For each of the three current phases, the switching field 1, a corresponding switching field component 1 00, 200 and 300, which can be coupled to the busbar phase conductors of the corresponding current phase.
• the panel components 100, 200, and 300 are substantially similar to one another except for the differences described below. In the following, first the switching field component 300 for the third current phase will be described.
• the panel component 300 has a circuit breaker module 3 10, in which a circuit breaker is arranged.
• the power switch module 310 further includes a first output 315 and a second output to which a connector 340 is connected. The two outputs point in the same direction, namely in a z-direction.
• the circuit breaker module 310 further includes a stand frame 318.
• the connector 340 is T-shaped and has a bottom exit (directed in the z direction) and two opposite side exits (directed in an x direction). By means of the bottom outlet, the connector 340, as described above, connected to the corresponding output of the circuit breaker module 310.
• One of the side outlets of the connector 340 is connected to the busbar module 370 via a circuit breaker module 350, and the other of the side outlets is connected to the busbar module 390 via a circuit breaker module 380.
• Circuit-breaker module 310, connector 340, circuit breaker modules 350 and 380, and busbar modules 370 and 390 respectively have respective inner conductor sections and respective housing sections, the respective housing sections defining respective volumes of gas for a dielectric shielding gas surrounding the respective conductor sections. These gas volumes can be self-contained or be connected to gas volume of adjacent modules for the protective gas, for example via gas-permeable post insulators.
• the two other switching field components 100 and 200 for the remaining current phases are constructed in a similar manner, and the above description applies accordingly also for these. Further details regarding the three switchgear components 100, 200, 300 are described below, in particular with reference to FIGS. 2a to 2c.
• the three power switch modules 110, 210, 310, or the power switches provided therein, are arranged parallel to one another and define an x-direction as an axis of the power switches (e.g., axis 112a in Fig. 2a).
• the circuit breakers 110, 210, 310 are spaced apart from one another in ay direction and are thus arranged in a circuit breaker plane (x-y plane).
• busbar phase conductor portions 174, 274, 374 of the first busbar are arranged parallel to each other and define a y-direction as the direction parallel to which they are arranged.
• the indication of a direction here does not include an absolute location and is not affected by a parallel shift.
• the phase conductor sections 194, 294, 394 of the second busbar are also arranged parallel to one another or to the y-direction.
• the x, y and z directions are perpendicular to each other and thus form a Cartesian coordinate system. However, this is not mandatory. In modified embodiments, these directions may also be transverse to one another, i. be non-parallel. In further embodiments, at least two, in particular all three, of the x, y and z directions form an angle of at least 60 ° with each other, and / or are perpendicular to one another.
• the bus bar phase conductor sections 194, 294, 394 are arranged one above the other in the z direction.
• the busbar phase conductor sections are arranged in a busbar plane (plane 8a in FIG. 2b, ie a yz plane).
• the connecting pieces 140, 240 and 340 are identical to each other.
• 2a shows a lateral cross-sectional view of the switching field 1 in a cross-sectional plane which is perpendicular to the y-direction, ie the direction of the first phase conductor section 174, and passing through a center of the first power switch module 110.
• the first panel component 100 will be described in more detail below.
• the first switching-field component 100 also has a circuit-breaker module 1 10 with a stationary frame 1 18.
• the stand frame 118 defines a ground plane 6, and the panel 1 is disposed entirely above the ground plane 6.
• the circuit breaker module 110 includes a power switch 112 (shown schematically) and a circuit breaker housing 111, which allows a gas-tight enclosure of the circuit breaker 112.
• the power switch 112 has an isolating distance.
• an isolating distance is defined as a distance which forms an insulation gap between two ends of the switch when the switch is open, but can be bridged by closing the switch by a moving switching element to establish an electrical connection between the two ends of the switch.
• the power switch 112 is operable by a drive module 113 which is capable of moving the moving switch element to open or close the switch.
• the circuit breaker 12 defines a circuit breaker axis 1 12a, e.g. as a movement axis of the moving switching element of the circuit breaker. This circuit breaker axis 112a defines the x-direction.
• the circuit breaker module 110 further includes a conductor piece 114 on one side of the separation line, and another piece of power 116 on another side of the separation line.
• the conductor piece 114 leads to a connection 115, to which further modules of the switching field 1 can be connected in order to be electrically connected to the conductor piece 114.
• Such other modules may include, for example, a circuit breaker module, a ground switch module, a current transformer module, a voltmeter module, cross-field coupling module for coupling to the second busbar, a connection module for coupling to external lines (underground or above ground ), and / or a combination of such modules.
• the connection 115 of the circuit breaker is directed in the z-direction.
• connection 115 has a connection flange lying in the xy direction.
• conductor piece 116 leads to a terminal 117, which also points in the z-direction and has a running in xy-direction flange.
• the conductor piece 116 passes through an insulator, for example a support or bulkhead insulator 117a.
• the insulator 17a is arranged in the plane of the terminal 117 (xy plane).
• a connector 140 is connected to the terminal 117 of the circuit breaker module 110.
• the connector 140 is T-shaped and has in addition to the bottom outlet, which is connected to the terminal 1 17 of the circuit breaker module 1 10, two opposing side outlets 148.
• the connector 140 may also include an optional voltmeter.
• the side exits 148 are provided with a flange extending in the z-y plane and with a disc insulator disposed in the plane of the flange.
• the connector 140 further includes a housing capable of sealing its interior gas-tight to receive the insulating gas therein.
• the T-type connector 140 has an optional current transformer 142.
• the current transformer 142 is equipped to measure a current passing through the conductor piece 145.
• the current transformer 142 preferably comprises magnetic coils which are capable of measuring the current in a contactless manner via magnetic induction.
• the current transformer 142 may be disposed outside of the volume of gas defined by the housing.
• a circuit breaker module 150 is mounted at one of the side exits 148 of the connector 140.
• the circuit breaker module 150 is mounted with an input 158 to the side exit 148 of the connector 140, namely via a flange connection between the flange of the side exit 148 and a mating flange of the entrance 158.
• the circuit breaker module 150 has a separation shell 152 with a separation path 154.
• One side of the partitions 154 is connected via conductor sections, e.g. 146 and 145, electrically connected to the power switch 1 12.
• the other side of the isolation link 154 is connected via a busbar connection conductor section 156 to the busbar phase conductor section 174, described in more detail below.
• the busbar phase conductor section 174 is electrically connectable to the circuit breaker 112 via the circuit breaker 152.
• the circuit breaker 152 has a fixed contact piece and a moving contact piece, which are separable from each other by the separating section 154.
• the circuit breaker and two moving contact pieces, one on both sides of the separation section 154 have.
• the moving contact piece is movable to selectively bridge or disconnect the separation section 154.
• the separation path runs in the z direction. In embodiments, the z-direction may even be defined by the direction of the separation distance.
• the moving contact piece along the z-direction is movable, and also the direction of movement of the moving contact element can define the z-direction.
• the moving contact element of the disconnecting switch 152 is arranged on the electrically connected to the power switch 112 side of the separation path 154.
• the moving contact element of the circuit breaker 152 is spatially arranged on the side facing away from the circuit breaker side of the separation path 154.
• the circuit breaker module 150 seamlessly transitions into a first busbar module 170.
• the circuit breaker module 150 and the first bus bar module 170 are integrally formed with each other and have a common housing.
• the common housing defines a gas-tight lockable interior in which the circuit breaker 152 and the first bus-phase conductor portion 174 are arranged.
• the first busbar phase conductor section 174 extends in the y direction or defines the y direction, and a housing section 171 of the first busbar module 170 extends at least in sections like a cylinder around the first busbar phase conductor section 174.
• the circuit breaker module 110, the connector 140, and the circuit breaker module 150 having the first busbar module 170 thus define one or more gas spaces that allow an inert gas sealed connection from the power switch 112 to the first busbar phase conductor section 174.
• another disconnect switch and busbar module 190 Disposed on the further side exit of the connector 140 is another disconnect switch and busbar module 190 which includes a disconnect switch 182 and another busbar phase conductor section 1 94.
• the breaker and busbar module 190 is constructed in accordance with the breaker module 150 and the busbar module 170 already described above.
• FIG. 2 a shows a second busbar module 270 and a third busbar module 370 with corresponding busbar phase conductor sections 274 and 374 for the second and third current phase of the first busbar shown.
• optional busbar modules 290 and 390 having respective busbar phase conductor portions for the second and third current phases of the second busbar, respectively. These modules are described in more detail below with reference to FIGS. 2b and 2c.
• a limiting plane 2 is defined as the plane which runs in the x direction (ie parallel to the circuit breaker axis 1 12a) and in the y direction (ie parallel to the first or second bus bar phase conductor section 174, 274) and includes a center of the second bus bar phase conductor portion 274.
• the isolating distance 154 is arranged completely on the side of the circuit breaker 112 with respect to the limiting level 2.
• the separation path 154 may also extend into the limiting plane 2, so that it is only partially arranged on the side of the limiting plane 2 facing the power switch 112.
• the isolating path 154 is arranged predominantly on the side of the limiting plane 2 facing the circuit breaker 112, in particular at least 70% or even at least 90% of its length on the side of the limiting plane facing the circuit breaker 112 2 is arranged. Advantages of this arrangement are explained below.
• FIG. 2b a second component 200 of the switching field provided for the second current phase is shown.
• This second component 200 is constructed in accordance with the first component 100 which was explained with reference to FIG. 2a, and the reference numbers of the component 200 starting with 2 correspond to the reference numbers of the component 100 starting with 1.
• the description of FIG 2a also for Fig. 2b apart from the recognizable in the figure and the differences described below.
• the power switch 212 is arranged parallel to the power switch 112 for the first current phase, ie the axis 212a also extends in the x direction.
• the power switch 212 is offset in the y direction from the power switch 112 (see Fig. 1). Accordingly, other modules of the component 200 are offset in the y direction relative to the corresponding modules of the component 100 in the y direction.
• Connector 240, disconnect module 250, and second busbar module 270 provide a gas isolated path for a conductor extending from power switch 212 to the second busbar phase conductor.
• Section 274 runs for the second phase of the current and is separable only by the circuit breaker 252 or its separation section 254.
• the output 248 is disposed at the same height (ie equidistant in the z direction from the ground plane 6) to the output 148 of FIG. 2a, and accordingly, the node between the conductor portions 245 and 246 of the connector 240 is also at the same level as the corresponding node of the connector 140 of Fig. 2a.
• the second busbar phase conductor section 274 extends parallel to the first busbar phase conductor section 174, ie, along the y-direction.
• the second busbar phase conductor section 274 is offset in the z-direction with respect to the first bus-phase conductor section 174.
• the busbar modules 170 and 270 (and 370) are thus arranged along a busbar plane 8a which extends in the y and z directions. Specifically, the two (three) busbar phase conductor portions 174, 274 (and 374) extend in the busbar plane 8a.
• the center of the output 248 of the connector 240 has a height (in the z-direction above the ground plane 6) that is exactly midway between the height of the first busbar module 170 and that of the second busbar module 270.
• the breaker and bus bar module 250, 270 may be configured in exactly the same way as the corresponding module 150, 170 of FIG. 2a, with the difference that the module 250, 270 of FIG. 2b is rotated 180 degrees the x-axis is rotated.
• the use of an identically constructed module for the first current phase (module 150, 170 of Fig. 2a) and for the second current phase (module 250, 270 of Fig. 2b) reduces the number of different parts and therefore allows efficient manufacture and maintenance with less different parts. The same applies to the use of the same connecting pieces 140, 240, 340.
• the moving contact element is arranged at the disconnector 252 spatially on the other side of the separation distance 254 as in the circuit breaker 152:
• the circuit breaker 252 In the circuit breaker 252 is the moving contact element arranged on the side facing the circuit breaker 212 side of the separation path 254. More generally, the circuit breaker 154 and the circuit breaker 254 are aligned opposite each other, in particular their moving contacts are arranged on different sides of the respective separation sections, so the moving contact piece of one of the circuit breaker 154, 254 on the side facing the circuit breakers and the moving contact piece of the other Disconnector 154, 254 on the side facing away from the circuit breakers.
• disconnector and busbar module 250, 270 also applies to the mounted on the second side exit of the connector 240 module 290 with the disconnector 282 and the busbar phase conductor portion 294 for the second current phase of the second busbar.
• the busbar modules 190, 290, 390 or the busbar phase conductor sections 194, 294, 394 arranged therein are also arranged along the busbar plane 8b, which extends in the zy direction, for the second busbar as well.
• the circuit-breaker modules (in Fig. 2b: module 210, as well as modules 1 10, 310) each have two power outputs 215 and 217.
• the centers of the outputs 215 are compared to the centers of the outputs 217 in the x-direction by a common Offset 2 times m, so by twice the length indicated in Fig. 2b m.
• this distance is 2 times m three times the modulus of a component.
• the module size can be 720 mm, and the distance 2 times m 2160 mm.
• the busbar plane 8a is offset from the outputs 217 by a common distance m, away from the outputs 215, in the x-direction.
• the busbar plane 8a is therefore the distance m from the first outputs 215 and the distance 3m away from the second outputs 217.
• These embodiments correspond, for example, to a variation of the switching field of FIGS. 2a-2c, in which the proportions are selected such that the three lengths illustrated in FIG. 2b as m are the same.
• the busbar plane 8b is located centrally between the outputs 215 and 217 of the power switches, each at a distance m.
• a connection between output 215 and the second busbar (level 8b) can be made, such as for a coupling module.
• This central arrangement is particularly advantageous in embodiments with a double busbar.
• FIG. 2c a third component 300 of the switching field provided for the third current phase is shown.
• This third component 300 is constructed according to the first and second components 100, 200 which were explained with reference to FIGS. 2a, 2b, and the reference numbers of the component 300 starting with 3 correspond to the reference numbers of the components 100 starting with 1 and 2 and / or 200.
• FIGS. 2a and 2b also applies to FIG. 2c apart from the differences recognizable in the figure and those described below.
• the circuit breaker module 310 is thus constructed according to the circuit breaker modules 110, 210, and the circuit breaker axis 3 12a is in parallel with the circuit breaker axles 112a and 212a, i. to the x direction. These axles 112a, 212a, 312a are uniformly offset from one another in the y direction (see FIG. 1). Also, the connector 340 is constructed in correspondence with the connectors 140 and 240, and its outputs 348 are equidistant from the base plane 6 in the z-direction as are the outputs 248 and 148 of the corresponding first and second current phase connectors, respectively.
• the node between the conductor portions 346 and 345 is equidistant from the ground plane 6 in the z-direction as the corresponding nodes in Fig. 2a and Fig. 2b, so that these nodes or the outputs of all three connectors 140, 240, 340 along a in y- direction extending straight lines lie.
• a circuit breaker module 350 is connected.
• the disconnect switch module includes a disconnect switch 352 having a disconnect path 354.
• This disconnect switch is constructed similarly to the disconnect switch 252 of FIG. 2b, and more particularly, the moving contact of the disconnect switch 352 is spatially located on the same side of the disconnect path as the disconnect switch 252, particularly the circuit breaker 312 side facing the separation path 354.
• the separation path 354 is, like the remaining separation sections 154 and 254, disposed on the side of the circuit breaker 3 12 opposite the boundary plane 2.
• the separating sections 154, 254, 354 are arranged parallel to one another.
• the term parallel includes an anti-parallel arrangement, ie with twisted by 180 ° elements.
• the separation path 354 is thus arranged in the z-direction.
• the circuit breaker module 350 is not formed in common with a bus bar module. Instead, the circuit breaker module 350 has a busbar terminal 359.
• the busbar connection 359 points in the z-direction. Further, the busbar terminal 359 is provided with a flange lying in the xy plane. To the busbar terminal 359, a conductor portion 356 leads. The conductor section 356, and Thus, the busbar terminal 359 is electrically connected to the circuit breaker 312 via the circuit breaker 352.
• the busbar module 370 is detachably connected, namely via a flange connection between the flange of the busbar terminal 359 and a mating flange of a corresponding terminal 378 of the busbar module 370. Between these flanges a bulkhead insulator 359a is disposed.
• the Schott insulator 259a is arranged on a side facing away from the circuit breaker of the boundary plane 2 and extends parallel to the boundary plane 2.
• a support insulator can be used.
• the busbar module 370 is removable.
• the busbar terminal 359 is configured to connect a third busbar phase conductor section 374 such that a third busbar module 370 of the third current phase can be formed, in which third busbar module 370 of the third busbar phase conductor section Section 374 is arranged.
• the bus bar module 370 includes the third bus phase phase conductor portion 374 for the third current phase, and a housing portion 372, which surrounds the bus bar phase conductor portion 374 in a cylindrical manner. Further, the busbar module 370 includes a conductor portion 376 which connects the busbar phase conductor portion 374 to the output 378 and establishes an electrical connection to the conductor portion 356 via the output 378. Thus, conductor portions 276, 256 provide electrical connection from busbar phase conductor portion 372 to disconnect switch 352, and via this disconnect switch, provide an optional disconnectable electrical connection to power switch 312.
• the fact that the busbar module 370 is removable has significant advantages for the transport of the panel. In particular, this can be achieved a reduced height.
• the height is here as the height in the z-direction or in the direction perpendicular to a circuit breaker level in which the circuit breakers are arranged defined: Namely, the height of the height of the panel measured from the bottom of the panel, eg a stand frame of Leitsungsschalter- arrangements or from the defined by this frame ground plane 6. Below is defined here as the direction in the z direction from the limiting plane 2 to the circuit breakers.
• the overall height of the panel is specified by this module 370 when the third busbar module 370 is mounted.
• the height corresponds to the distance in the z-direction between a conveying height plane 4 from the ground plane 6. This reduced height is predetermined by the second busbar module 270 and / or by the busbar connection 359 for the third current phase.
• the switchboard is completely space between the ground plane 6 and a transport height level 4: All remaining parts of the panel, in particular the busbar modules 270, 170, and the circuit breaker module 350 are between these two levels. 6 and 4 arranged.
• the switch panel With the busbar module 370 removed (and 390), the switch panel is in a transport state, and is accommodated in a standard transport container whose inside height does not exceed this distance between the levels 6 and 4.
• each of the three separating sections 154, 254, 354 is arranged at least partially below the limiting plane 2 (more precisely, on the side facing the three circuit breakers 112, 212, 312). This has the consequence that a low height can be achieved, as will be explained below.
• the busbar modules 170 and 270 also extend into a region slightly above the busbar phase conductor sections 174 and 274. For example, in this area is still a part of the gas volume for the protective gas. Therefore, even with the third bus bar phase conductor removed, the switch panel extends slightly above the limiting plane 2 defined by the busbar phase conductor sections 174 and 274.
• the additional height corresponds at least to the distance. which is required to dielectrically isolate the voltages occurring. A measure of this distance is the radius of the cylinder-like housing portion of the second busbar module 270.
• the switches 152, 252, 352 usually also require a certain additional space above the separating sections 154, 254, 354. This additional space is required for the respective switch contacts and for their dielectric insulation.
• the additional minimum height required for this via the separating sections 154, 254, 354 also corresponds, on the order of magnitude, to the distance required for the effective encapsulation of the occurring stresses.
• a transport configuration is made possible, the essential moving parts of the switchgear, in particular the circuit breaker contains, but their height or transport height level 4 is still low.
• the transport height plane 4 is spaced from the boundary plane 2 by less than the distance d (z-direction distance between first and second bus bar phase conductor sections 174 and 274, see FIG. 2 b). In further embodiments, the transport height plane 4 is spaced less than 80 cm from the boundary plane 2.
• FIG. 3 shows a transport unit 10 which has a transport container 13 and the switching field shown in FIGS. 1 to 2c in the transport state, ie without the third busbar modules 370, 390.
• the reference symbols in FIG. 3 correspond to the reference symbols in FIGS 2c, and for explanation, reference should therefore be made to the corresponding description of Figures 1 to 2c.
• a gas-tight attachment 359b is placed on the connection 359 of the disconnect switch module 350, which allows, for example, a protective gas to be stored in the disconnect switch module 350 under overpressure without the insulator 359a arranged underneath the attachment 359b (see FIG. 2c) bursting.
• the switch panel in FIG. 3 also has the drive module 113, 213, 313, which is equipped for actuating the disconnect switches 152, 252, 352 and the power switches 1 12, 212, 3 12.
• the drive module 113, 213, 313 is also operatively connected in the transport state with the circuit breakers and with the circuit breakers, so in particular all necessary for the operation, such as electrical and / or mechanical, connections between the drive module and disconnector or circuit breaker.
• common drive modules 113, 213, 313 separate drive modules for different switches (the circuit breaker and the circuit breaker) can also be provided.
• a control unit for controlling the circuit breaker and the circuit breaker and other components of the panel is mounted and connected ready for use.
• the cubicle is dimensioned so that the cubicle fits into a standardized transport container 13.
• the overall height of the busbar connection 359 or of the switch panel with the third busbar module 370 (and 390) removed is in particular less than 270 cm.
• the height of 270 cm corresponds approximately to the inside height of a typical standard transport container ("High cube" type with a total external height of approximately 290 cm), while the height of the cubicle with third busbar module 370 is more than 270 cm ,
• the panel of Figure 3 is preassembled ready for transport: This means that the panel can only be transported by possibly insertion into a standard container, and removal of the container; and that the already existing parts of the cubicle are mounted to each other as intended for the operation of the cubicle. or as it corresponds to the functional ready-built panel of the high-voltage switchgear (with the exception of the busbar modules 370, 390).
• Busbar terminal 359 is busbar phase conductor sectionless, i. that it is free of a bus bar phase conductor section, no bus bar phase conductor section is connected thereto, the bus bar phase conductor section 370 (and 390) is removed, the connection 359 (and 389) is unobstructed in this sense.
• the transport container 13 is a standard transport container.
• Standard transport containers are standardized worldwide according to ISO 668, and are also referred to as freight or sea freight containers.
• Shipping containers are standardized for maritime shipping, so they are easy to stack. The following standards in particular have prevailed here:
• TEU container (20 foot equivalence Container) with a length of about 6.1 m, a width of about 2.4m.
• Further standard containers are the FEY (“forty foot equivalent unit”) containers with a length of about 12.2 m, the fortyfive equivalent unit container with a length of about 13.7 m, and also 48-foot and even 53 -foot (length: 16.15 m) Containers
• These containers also referred to as transport containers or transportable standard containers
• the transportable standard containers have a height of about 2.6 m
• the total height can be assumed as the theoretical maximum value for the internal height.
• a typical interior height is 20cm lower a ls the total height, so in the case of the high cube container 270 cm.
• the overall height of the switching field in the transport state ie the distance between the ground plane 6 and the plane parallel to the ground plane 6 transport level 4, less than 290 cm or 270 cm (the maximum or typical internal height of a standard transport container) or even smaller than 260 or 240 cm (the maximum or typical internal height of a TEU container) is. It is also advantageous if the width (in the xy plane or in a direction perpendicular to the circuit breaker axis) is less than 2.4 m.
• the transport height level 4 is significantly affected by the height of the second busbar, i. determined by the boundary plane 2, namely: the transport height level 4 is namely at least by the radius of the housing portion for the second busbar higher than this boundary plane 2, as in Fig. 3 and in Fig. 2b easily recognizable.
• this radius can not be chosen arbitrarily small, since a certain minimum radius for effective shielding of the voltages occurring during operation is required.
• disconnectors 152, 252, 352 are already present in the transport state for all three current phases.
• An assembly of these circuit breakers namely requires extensive functional tests, since it is moving parts, and this function test can thus be made before the transport.
• the separating sections of these circuit breakers are arranged at least partially on the side facing the circuit breaker level 2. This also helps to increase the overall height, i. the height of the transport height level 4, to keep low, as described above.
• the transport container 13 defines an inner volume 12 with a width b and a height h, which do not exceed a width and height of a standard container.
• the width b is less than 2.4 m and the height is less than 2.9 m or even less than 2.6 m.
• the switch panel comprises the three gas-insulated circuit breaker modules 110, 210, 310 with the associated circuit breakers, which are arranged parallel to each other.
• the switch panel in the transport state for each of the power phases comprises a disconnect switch module with a respective disconnect switch 152, 252, 352 (see Figures 2a to 2c), and a busbar module 170, 270 for the first and the second current phase.
• the S chaltfeld in the transport state comprises a busbar connection 359 for connecting a third busbar module for the third current phase.
• this busbar module (module 370 of FIG. 2c) is not connected in the transport state.
• circuit breakers 152, 252, 352 are described, which can each be used independently of each other and of the described embodiment in other embodiments (in which case the reference numerals are only illustrative and not limiting).
• the circuit breakers each have a circuit breaker-side contact element which is electrically connected to the respective power switch 112, 212 and 312, respectively.
• the circuit breakers further each have a busbar-side contact element, the cut through a busbar connecting conductor 156, 256, 356 with the j e Democratic busbar phase conductor or busbar connection 174, 274, and 359 and 374 electrically connected is.
• the electrically connected to the circuit breaker contact element is a moving contact element.
• the moving contact element on the Circuit breaker side facing away from the separation section 1 54 arranged.
• B ei the disconnectors 252, 352 the moving contact element on the side facing the circuit breaker side of the separation distance 254 and 354 is arranged.
• the separating sections 152, 252, 352 lie between the respective contact elements of the disconnecting switches 150, 250 or 350. As a result, an orientation of the respective separating path and thus of the respective disconnecting switch is defined as the direction from the circuit breaker-side contact element to the busbar side contact element.
• the orientation is defined by the direction of movement of a movable contact piece of the circuit breaker.
• the separating sections are arranged parallel to one another, ie these orientations or axes are arranged parallel to one another.
• This orientation may define the z-direction with the z-direction being transverse to the x and y directions.
• the respective circuit breakers 152, 252 and 352 are aligned in the z direction.
• the separating sections 154, 254, 354 are arranged at least partially on the side of the limiting plane 2 facing the three circuit breakers 112, 212, 312.
• each of the three separating sections 154, 254 and 354 are arranged on the side of the limiting plane 2 facing the three circuit breakers 112, 212, 312.
• the three separation sections (154, 254, 354) are arranged at least 70%, in embodiments at least 90% of their length on the side of the boundary plane (2) facing the three circuit breakers (112, 212, 312).
• the first disconnect switch 154 is disposed in a first busbar module 170 along with the first busbar phase conductor portion 174.
• the second disconnect switch 254 is disposed in a second busbar module 270 along with the second busbar phase conductor portion 274.
• the third disconnect switch 354 is arranged in common with the busbar terminal 359 in a busbar connection module 350.
• busbar phase conductor sections 174, 274 and possibly 374 each have their own housing with its own gas space per phase.
• the busbar phase conductor sections 174, 274 and possibly 374 are thus designed for a single-phase encapsulation. But they can have a common gas space for the three phases.
• a housing portion of the bus bar module 170, 270 and / or 370 for the respective bus bar phase conductor portion 174, 274 and 374, respectively, is T-shaped, with the side arms of the T the bus bar phase conductor portion 174, 274 and 374, respectively and a bottom arm of the T at least partially receive the busbar connecting conductor section 156, 256 and 356, respectively.
• the first (second, third) bus bar phase conductor portion 174 is offset from an axis of the first (second, third) disconnector 152 in the x direction.
• the first and the second bus-phase phase conductor section 174, 274 are arranged offset from one another in a transverse to the x and y direction z-direction.
• the second busbar phase conductor portion 274 is disposed in the z-direction at least partially below (i.e., toward the power switches) of the busbar terminal for the third current phase 359.
• the two (and in embodiments three) busbar phase conductor sections 174, 274 (and 374) extend in a z- and y-directional busbar plane 8a, respectively, and the two or three busbar phase conductors extend in the busbars Level 8a.
• the first and second bus bar phase conductor portions 174, 274 are spaced apart by a bus bar module pitch in the z direction, and a position provided for a third bus bar phase conductor portion 374 is by the bus bar module pitch in the z direction the second busbar phase conductor portion 274 spaced.
• the position of the second busbar phase conductor section 274 has a height of less than 230 cm, 250 cm or 270 cm.
• the position provided for the third busbar phase conductor section 374 has a height of over 230 cm, 250 cm, or even 270 cm.
• the first and second bus bar phase conductor sections 174, 274 are arranged in the bus bar plane 8a at a distance (from center to center) d, and the height of the switching field, in particular the second bus bar phase conductor section 274 and the busbar terminal 359 is less than d from the limiting level 2.
• the two bus bar phase conductor modules 170, 270 have respective bus bar flanges 172, 272 for connecting further portions of the bus bar phase conductors of the switchgear.
• the bus bar flanges are at least approximately, to an accuracy of 50 cm, in a common plane (x-z plane).
• the busbar terminal 359 is directed away from the power switches 112, 212, 312.
• the bus bar terminal 359 is directed to a direction other than the y direction.
• the busbar connection 359 points in a z-direction extending transversely to the x and y directions, with a deviation of 45 ° or less, in particular of 10 ° or less.
• the busbar terminal 359 is disposed outside of the busbar phase conductor for the third current phase.
• the busbar connection is a non-continuous output.
• the busbar connection has a connection flange oriented in the z-direction, wherein the connection flange is arranged in a plane lying parallel to the x- and y-direction.
• the busbar terminal 359 additionally has a Schott insulator.
• the Schott insulator is arranged on a side facing away from the circuit breaker level 2, and extends in embodiments parallel to the boundary plane 2. Instead of a bulkhead insulator may also be provided a support insulator.
• the busbar is a dual busbar with first busbar phase conductors (with sections 174, 274, 374), and second busbar phase conductors (with sections 194, 294, 394 for the first, second, and third current phases, respectively).
• the switch panel further comprises: a T-type connector 140, 240, 340 of the first, second, and third current phases each having a bottom output, a first side output, and a second side output opposite the first side output, each of the three connectors 140, 240, 340 via the respective bottom outlet with the power switch 112, 212, 312, via the respective first side output to the first bus-phase conductor portion 174, 274, 374, and over the respective second Side output to the second busbar phase conductor portion 194, 294, 394 of the respective current phase is connectable.
• the first side exits (or centers thereof) of all three T-type connectors are arranged along a first straight line, and the second side exits or centers thereof are arranged along a second straight line, wherein the first (and second) straight lines in embodiments along the y-direction runs.
• each of the three connectors has a respective node from which electrical conductor sections 145, 146; 245, 246; 345, 346 extend in a star-like manner to the respective side exits and to the respective floor exit, and the junctions of all three T-type connecting pieces run along a third straight line, which in embodiments extends along the y-direction.
• the cubicle includes a first busbar module 170 and a second busbar module 270, wherein the first busbar phase conductor portion 174 in the first busbar module 170 and the second busbar phase conductor portion 274 in the second busbar module 270 is arranged.
• the bus bar terminal 359 is configured to connect a third bus phase phase conductor portion 374 of the third current phase, that a third bus phase module 370 of the third current phase is formed, in which third busbar module 370 of the third busbar Phase conductor section 374 is arranged.
• the panel further includes a third bus phase phase conductor portion 374 for the third current phase.
• the third busbar phase conductor portion 374 is disposed in parallel with the first and second busbar phase conductor portions 174, 274, is connected to the busbar terminal 359, and / or is connected across the third current phase disconnect switch 354 to the power switch the third current phase 312 electrically connected.
• the third busbar section is offset from the first and second busbar sections in a z-direction away from the power switches, eg offset by the distance d.
• the three bus bar phase conductor portions extend in the bus bar plane 8a and are equally spaced from each other.
• the busbar phase conductor sections 174, 274 and 374 may also be arranged differently than on a flat busbar surface 8a in modified embodiments. For example, they may be disposed on a cylindrical surface (circular segment in FIG. 8a), or in an L-like configuration, with portions 174 and 274 substantially offset from each other in the x direction, and the portion 374 opposite to each other in the x direction. Direction is offset.
• the cubicle is pre-tested, i. it has already been put into a substantially operational condition and undergoes some functional tests in this condition.
• the control panel is filled with inert gas at typically more than 1 bar, for example at least 1.5 bar gas pressure.
• the cubicle is arranged transportable in a container.
• the switch panel is designed for operating voltage of at least 400 kV, for example 420 kV.
• the switch panel includes three ground switches, one for each of the three current phases, the earth switches e.g. in the circuit breaker modules 150, 250, 350 are accommodated, but can also be accommodated in the connection modules 140, 240, 340.
• the cubicle includes current transformers and / or voltmeters.
• the following describes a method for setting up a high-voltage switchgear.
• the device also includes such activities as manufacture, upgrade, repair, etc.
• a pre-assembled panel is provided in a standardized transport container. This happens locally away from a location for the high voltage switchgear.
• the panel may be the circuit panel of FIG. 3 having a first bus phase phase conductor portion 174 of the first current phase and a second bus phase phase conductor portion 274 of the second current phase (see also FIGS. 1 to 2c).
• the switching field In the transport state, the switching field, and in particular the busbar phase conductor sections for the first and the second of the current phases and a busbar connection 359 for the third current phase of the switching field, has a height that is smaller than the inner height of the transport Containers is.
• a functional pre-testing of the panel may take place prior to transportation. Then, the panel is transported in the transport container to the site for the high-voltage switchgear.
• the switching field is at least partially filled with inert gas during the transport. Then, a third bus phase phase conductor portion of the third current phase is connected to the busbar terminal of the switching field, so that the busbar phase conductor portion of the third current phase has a height greater than an internal height of the transport container.
• the switching field shown in FIG. 1 can be obtained in this way.
• the first, second and / or third busbar phase conductor section is then connected to further sections of the busbar phase conductors of the switchgear. In this way, a high voltage switchgear is obtained with a switch panel described herein.
• the switch panel can remain in the transport container, ie at least the circuit breakers and the circuit breakers remain in the transport container.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Gas-Insulated Switchgears (AREA)
• Patch Boards (AREA)

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• 2010
  • 2010-11-16 CN CN2010800710975A patent/CN103329373A/zh active Pending
  • 2010-11-16 WO PCT/EP2010/067593 patent/WO2012065630A1/de active Application Filing
  • 2010-11-16 KR KR1020137015473A patent/KR20130115299A/ko not_active Application Discontinuation
  • 2010-11-16 EP EP10776746.9A patent/EP2641309A1/de not_active Withdrawn
  • 2010-11-16 RU RU2013127228/07A patent/RU2013127228A/ru not_active Application Discontinuation
  • 2010-11-16 MX MX2013005390A patent/MX2013005390A/es not_active Application Discontinuation
• 2013
  • 2013-05-16 US US13/895,633 patent/US20130250487A1/en not_active Abandoned

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