WO2014177379A1

WO2014177379A1 - Gas-insulated switchgear arrangement

Info

Publication number: WO2014177379A1
Application number: PCT/EP2014/057686
Authority: WO
Inventors: Adrian WIDMER; Rene Kallweit
Original assignee: Abb Technology Ag
Priority date: 2013-05-03
Filing date: 2014-04-16
Publication date: 2014-11-06
Also published as: DE102013007551A1

Abstract

A gas-insulated switching section, having three conductor phases for different electrical potentials, wherein each conductor phase can be interrupted by an assigned circuit breaker which defines a longitudinal axis by means of its elongate form. Each circuit breaker comprises a first power connection, which defines a first connection axis, and a second power connection, which extends orthogonally to the longitudinal direction in the same direction as the first connection axis and defines a second connection axis. A first busbar section, a second busbar section and a third busbar section define by means of the elongate thereof a first busbar axis, a second busbar axis and a third busbar axis respectively, which all run parallel to one another. The busbar sections are offset against one another in the direction of the first connection axis in such a manner that the projections thereof onto a projection plane extending at right angles to the longitudinal axis do not overlap one another, the first busbar axis and the second busbar axis being arranged in a common busbar plane, while the third busbar axis is arranged parallel to said busbar plane on a side of the busbar plane facing the first connection axis.

Description

Gas-insulated switchgear arrangement

TECHNICAL AREA

The invention relates to the field of metal-enclosed gas-insulated switchgear (GIS), in particular the gas-insulated high-voltage switchgear. The invention relates to a gas-insulated switch panel according to the preamble of claim 1, and a substation formed from a plurality of such switchgear.

STATE OF THE ART

In typical gas-insulated high-voltage systems, a modular design of the functional groups such as circuit breakers, ground switches, etc. of a switching field (English, bay 'called) known. A switch panel is generally understood here as the field of a switchgear and can be constructed in various ways, for example as a cable outlet box, as outdoor outlet panel or as a dome panel for connecting two busbars.

In order to realize a metal-enclosed, gas-insulated substation, at least two switching fields are typically electrically connected to one another on the input side or the output side with a so-called busbar for transmitting a primary power.

Since GIS switchgears are often used in conurbations and / or other cramped areas, the compactness of a substation is very important in addition to the performance. Particularly in the case of GIS installations or substations with very cramped conditions, the market demands switchgear systems which meet both requirements.

As a result, several gas-insulated switchgear are known, which deal with the compactness of the GIS. Representative members of a large number of documents in the patent literature are known, for example, from EP0872931 B1, US6614648B2, EP2015414A1 and WO2012 / 065630A1.

PRESENTATION OF THE INVENTION

The object of the present invention is to provide a switching field, which in comparison to known switching fields by a simplified construction distinguishes, without compromising the usability of the switchgear must be made. Another object is to provide a substation with such panels with the aforementioned properties.

With regard to the gas-insulated switch panel, this object is achieved in that it has three conductor phases for different electrical potentials, each conductor phase can be interrupted with its own circuit breaker. The circuit breakers define by their elongated shape depending on a longitudinal axis which, depending on the embodiment of the circuit breaker can also be the switching axis. Each power switch has a first power connection - for example in the form of a first flange - which defines a first connection axis. This first connection axis extends orthogonally to the longitudinal axis. The power switch further has a second power connection - for example in the form of a second flange - which extends orthogonally to the longitudinal direction in the same direction as the first connection axis and thereby defines a second connection axis. The gas-insulated switch panel further comprises a first gas-insulated busbar section, a second gas-insulated busbar section, and a third gas-insulated busbar section. These busbar sections each form a longitudinal section of a gas-insulated busbar. The first busbar section, the second busbar section and the third busbar section each define a busbar axis, a second busbar axis and a third busbar axis by their elongate shape. In this case, the first busbar axis, the second busbar axis and the third busbar axis are arranged parallel to each other.

Moreover, the busbar sections are offset from one another in the direction of the first connection axis such that their projections do not overlap one another on a projection plane extending at right angles to the longitudinal axis. This is advantageous in that this feature makes it possible to get from a connection axis in the most direct way to each busbar section, without that adjacent busbar sections must be bypassed by means of complex auxiliary structures, as is the case with a switch panel according to EP2015414A1.

In a basic embodiment of the inventive switching field, the first busbar axis and the second busbar axis in a common Busbar level arranged while the third busbar axis is arranged parallel to this busbar plane on a side of the busbar plane facing the first connection axis. This offset of the third busbar section in the direction of the vertical axis makes it possible to design a connection construction between the first power connection and the third busbar section at least more directly, that is to say shorter, in comparison to known switching fields. Depending on the embodiment of the switching field and depending on how large the offset of the third busbar axis is selected to the busbar plane (viewed in the direction of the longitudinal axis), when connecting the third busbar section to the first power connection of its associated circuit breaker even on connection modules such as angle modules (90 ° pieces) and the like are dispensed with altogether, so that the total number of gas-insulated switchgear modules can be reduced compared to known modules.

The reduction in the complexity of the switching field is particularly evident when the busbar sections are all isolated in a single phase. This is the case, for example, with single-phase encapsulated switchgear, especially in high-voltage switchgear. The term high-voltage switchgear is understood to mean switchgear designed for nominal or nominal voltages of 50 kV or higher. Currently, switchgear with nominal operating voltages of more than 245 kV are clearly single-phase encapsulated.

The gas-insulated switch panel according to the invention can be mounted as required in a first mounting state and a second mounting state.

In the first mounting state, the first busbar section, the second busbar section and the third busbar section are electrically connected to the respective first circuit breaker terminal of the power switches associated therewith so that the first busbar axis, the second busbar axis and the third busbar axis are at a predefinable or predefined geometric location are located. As an example of a switch panel in the first state of assembly is at this point a switching field in a double bus rail configuration (English: double bus bar configuration) called, the first busbar facing the first connection axis of the second connection axis, while its second busbar at the first connection axis facing away from the second connection axis. In the second mounting state of the switching field, the first Sannnnelschienenabschnitt, the second busbar section and the third busbar section are electrically connected to the second circuit breaker terminal of their associated circuit breaker. As an example of a switch panel in the second state of assembly at this point a so-called dome field (English: coupler bay) called. A dome panel is used for electrically connecting or disconnecting the first busbar to and from the second busbar during operation of the switchgear. In order to realize as compact a switchgear as possible while at the same time using substantially the same wattage system modules as for the assembled state, it is advantageous if the first busbar axis, the second busbar axis and the third busbar axis are in the same geometric location in the second mounting state of the cubicle at the first mounting condition. This is therefore the case that the same gas-insulated components can be used again for electrically connecting the two busbar sections arranged equidistant from the second connection axis to the second power terminals of the power switches assigned to them, as for realizing the switching field in the first mounting state.

With regard to the applicability of the gas-insulated switchgear modules and the construction of substations, modular distances of important axes are advantageous. Accordingly, in a preferred embodiment of the gas-insulated switchgear field, the distances between the first busbar axis and the second busbar axis, as well as between the second busbar axis and the third busbar axis in the direction of the first connection axis are of the same size. In the following, the term "viewed in the direction of the first connection axis" does not only mean the viewing direction along the first connection axis in the narrow sense, but in the general direction defined by the first connection axis in an orthogonal coordinate system. In other words, embodiments should also be encompassed by this definition, in which the busbar axes are not at all or only partly located on the first connection axis with respect to the first connection axis. Thus, this term also means embodiments of busbar arrangements in which the busbar axes are arranged on axes extending parallel to the first connection axis. Accordingly, when In the embodiment of a switch panel, where the circuit breakers extend in the horizontal direction, the term "spacers" is to be understood as merely the distance of the aforementioned busbar axis in the vertical direction.

If, for example, the busbar sections are to be selectively set to ground potential per phase for maintenance purposes, it is advantageous if the gas-insulated switching field is characterized in that the first power switch is connected to the first busbar section via its first power connection and a first isolator module. Correspondingly, the second power switch is connected via its first power connection and a second isolator component to the second busbar section. Correspondingly, the third power switch is connected to the third busbar section via its first power connection and a third disconnection device. In this case, the first isolator module defines by its elongated shape a first isolator axis, the second isolator module defines by its elongated shape a second separator axis and the third separator module defines by its elongated shape a third separator axis. All separator axes extend parallel to one another and are arranged in a common separator plane.

If the panel untypically does not have isolator components in the above-described manner, tubular connection modules are still required for electrically connecting the busbar sections of the busbar to the first power connection of the circuit breakers instead of the isolator modules. Due to their tubular shape, these connection modules also define axes which can be identical to the separator axes with respect to the geometric position. Accordingly, these axes then also define a plane which can be identical to the severer plane with respect to the geometric position. As a result, the terms "separator axis" and "separator plane" should also be regarded as present in such embodiments of cubicles where, instead of the isolator modules, a replacement geometry in the form of connection modules is present in approximately analogous manner. In order to achieve particularly compact and yet modular switch panels, it is advantageous if the separator plane extends parallel to the first connection axis. If the third busbar axis is even arranged in the splitter plane, the geometry of the connection of the third busbar section to the first power connection of the third power switch associated therewith can be kept particularly simple. For example, in one embodiment of a switch panel in which the third power switch is connected to the third busbar section via its first power connection and a third disconnect device, that third busbar section can be connected directly to the third disconnect device without requiring an angle module or the like. With regard to the first connection axis symmetrical panels are seen in side view when a first branch module is disposed between the first power connection of the first circuit breaker and the first isolator module, leading to the first isolator component flange connection of the first branch module in the direction of the first connection axis at the height of a first Node is arranged. In this case, a second branch module is arranged between the first power connection of the second circuit breaker and the second isolator module, a flange connection leading to the second isolator component of the second branch module being arranged in the direction of the first connection axis at the level of a second node. In addition, a third branch module is arranged between the first power connection of the third power switch and the third disconnector component, wherein a flange connection of the third branch module leading to the third disconnector component is arranged at the height of a third node in the direction of the first connection axis. In order to achieve simple busbar arrangements, the nodes are located on a common node line, which node extends straight parallel to the third busbar axis.

With regard to the first connection axis, as seen in a side view, symmetrical switching fields are advantageous, not least even if double busbar configurations are used, if the mass of the first busbar and of the second busbar is ultimately to be supported via the first power connection or its first flange.

Particularly compact switchgear can be achieved if the first busbar axis closer in the direction of the first connection axis first circuit breaker is arranged as the first node. This applies if the first busbar axis is arranged closer to the first power switch in the direction of the first connection axis than the second busbar axis. If there is a need for a certain minimum distance between the nodes and the first power terminals of the respective power terminals, such as because current sensors of a certain length are arranged on the branch modules, compact switchgear can still be achieved if the second busbar axis closer to the first connection axis closer to the first Circuit breaker is arranged as the first node. This is especially true when the third busbar section seen in the direction of the first connection axis is arranged even closer to the first power switch, as the second busbar axis.

Depending on the planned busbar layout, it may be advantageous if the third busbar section, viewed in the direction of the first connection axis, is arranged above the third disconnector module on a side of the third disconnector module facing away from the circuit breaker. The term "above" is metaphorically especially when the longitudinal axes of the circuit breaker extend in the horizontal direction. In particular, when the high-voltage switchgear is designed for nominal operating voltages of more than 245kV, the gas-insulated switchgear modules and thus ultimately the entire panel and the substation formed from it typically dimensionally quite large and sometimes bulky. As a result, the implementation of certain safety-related steps, such as the insight into several sight glasses of switching elements by the eye and / or a manual operation of an operator of the switchgear complex, as in switchgear with lower nominal operating voltages. The further away the various elements of a switchgear to be operated from one another, the greater the customer's desire for a so-called control platform can be. Control platforms are also called service platforms or cat walks in switchgear systems. Switchgear operators, for example, often require switchgear platforms above 300kV so that an operator of the switchgear can access the control panel via this control platform various positions for viewing and / or manual operation of switching modules and the like can get. In order to be able to fulfill such desires without forcing the operator to undertake costly or even dangerous climbing maneuvers, there must therefore always be sufficient space for such operating platforms. This operating platform is at least predominantly walkable, with an exceeding or exceeding certain obstacles for the operator is reasonable, if appropriate safety precautions are taken.

A suitable place for arranging such an operating platform can be achieved by having space (in the sense of space / volume) for a direction extending in the direction of the third busbar axis, seen above the second busbar section on a side of the second busbar section facing away from the circuit breaker Platform for a (human) operator of the gas-insulated switch panel is provided. If necessary, a platform extending in the direction of the third busbar axis for an operator of the gas-insulated switchgear panel is arranged in the above-mentioned space above the second busbar section on a side of the second busbar section facing away from the circuit breaker.

With regard to the substation, this object is achieved in that at least one gas-insulated switch panel according to the invention is used according to the preceding drawings.

Particularly compact substations can then be realized and still allow a good interchangeability of individual panels out of a substation when the busbar sections are arranged in the direction of the busbar axes per side frontally all in a common connection level. This connection plane advantageously extends orthogonally to the longitudinal axes in the direction of the connection axes. Depending on the needs and the concept of separation, the terminations of the busbar sections are formed at least on one side by single-phase insulators.

Particularly user-friendly substations can be achieved if this has a plurality of panels, which are mounted in the first mounting state, and at least one further switching field has, which is in the second mounting state. In this case, the space which extends for a platform extending in the direction of the third busbar axis for a (human) operator of the gas-insulated switch panel is provided, via several of these panels. An embodiment of such a substation includes a plurality of panels in Doppelsam- melschienenkonfiguration and at least one dome field. If necessary, such a platform for the operator of the gas-insulated switch panel is arranged in this place. This platform extends over several of these panels, for example, over all adjacent panels of the same type of substation.

Depending on the embodiment of the switching field, a portion of the platform at the third busbar section of the at least one further switching field from the second mounting state in the direction of the first connection axis of the third line switch in the direction of the first connection axis further away from the third line switch of the other switching field from the second mounting state can be arranged, as at a button of the first mounting state. This vertical offset of the operating platform in the third busbar section can be easily and safely overcome by the operator, for example by means of steps or by simply exceeding / exceeding the tubular connection geometry.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, several embodiments of the invention will be explained in detail with reference to the drawing. This shows purely schematically:

1 shows a side view of a first embodiment of a double busbar switch panel, which is also partially shown in section;

Fig. 2 shows a first embodiment of a coupler field in side view, which is also partially shown in section;

3 shows a side view of a second embodiment of a double busbar switch panel, which is also partially shown in section;

Fig. 4 shows a second embodiment of a coupler field in side view, which is also partially shown in section;

FIG. 5 shows a three-dimensional representation of a section of a substation having switch panels according to FIGS. 3 and 4;

Fig. 6 shows a view of a section of the substation according to Figure 5; and

FIG. 7 shows an embodiment of another substation in the illustration as in FIG. 6. Identical or at least the same elements were provided with identical reference numerals.

Ways to carry out the invention

FIG. 1 shows a side view of a cubicle 1 in a double busbar configuration in partial section. The sectional plane extends along an electrical phase of the three-phase switching field 1. The phase shown in section is referred to below as the third phase.

Each of the three phases of the switching field 1 has its own circuit breaker 2. The circuit breakers define by their elongated shape depending on a longitudinal axis 9, which is here also the switching axis of the movable contact element of the circuit breaker. To simplify the description, therefore, only the structure and function of a circuit breaker 2 will be discussed below.

Each power switch has a first power connection 3 with a first flange 4 extending in the X direction with respect to a coordinate system. This defines a first connection axis 5. This first connection axis 5 extends orthogonally to the longitudinal axis 9, ie with respect to the coordinate system in the Z direction. The circuit breaker 2 further has a second power connection 6 with a second flange 7. This extends orthogonal to the longitudinal direction 9 in the same direction as the first connection axis 5 and thereby defines a second connection axis 8. The gas-insulated switch panel 1 further comprises a first gas-insulated busbar section 10, a second gas-insulated busbar section 1 1, and a third gas-insulated busbar section 12. Diese In the installed state, busbar sections 10, 11, 12 each form a longitudinal section of a gas-insulated busbar of the substation passing through the control panel 1 in a substation. The first busbar section 10, the second busbar section 11 and the third busbar section 12 each define a first busbar axis 13, a second busbar axis 14 and a third busbar axis 15 by their elongate shape. Here, the first busbar axis 13, the second busbar axis 14 and the third Busbar axis 15 arranged parallel to each other and extend with respect to the coordinate system in the Y direction. The busbar sections 10, 11, 12 are offset from one another in the direction of the first connection axis 5 (ie in the direction of the Z-axis) such that their projections are free of overlapping on a projection plane 16 extending at right angles to the longitudinal axis 9. The first busbar axis 13 and the second busbar axis 14 are arranged in a common busbar plane 17, while the third busbar axis 15 is arranged parallel to this busbar plane 17 on a side of the busbar plane 17 facing the first connection axis 5. This offset of the third busbar section 15 in the direction of the first connection axis 5 creates space 18 and makes it possible to keep a connection structure 19 between the first power connection 3 and the third overhead rail section 15 significantly shorter and more direct compared to known switching fields.

The first busbar section 13, the second busbar section 14 and the third busbar section 15 together form part of a first gas-insulated busbar 24 for three electrical phases. A second busbar 25 extends parallel to the first busbar 24 and is also connected to the first flange 4 of the first power connector 3 in the present dual busbar configuration. In order to support the weight-that is, the mass-of the first busbar 24 and the second busbar 25 uniformly on the first flange 4, the busbars 24, 25 are preferably arranged mirror-symmetrically with respect to the first connection axis 5. If necessary, an auxiliary construction (not shown) for supporting the mass can be used. To implement the second busbar 25, the same gas-insulated switchgear modules were used as in the first busbar 24. Accordingly, the counterpart to the first busbar section 10 is the fourth busbar section 100, while the counterpart to the second busbar section 11 is the fifth busbar section 1 10 and the counterpart to third busbar section 12 is the sixth busbar section 120. The fourth busbar axis and the fifth busbar axis are arranged in a common further busbar plane 26 analogous to the busbar plane 17, while the sixth busbar axis is arranged parallel to this further busbar plane on one of the first connection axis 5 facing side of the further busbar plane. This offset of the sixth busbar section in the direction of the first connection axis in turn provides space and makes it possible to keep a connection structure between the fourth power connection and the third busbar section significantly shorter and more direct compared to known switching fields.

The present switch panel is constructed in a first mounting state in the sense of the foregoing description. The circuit breaker 2 thereby enables the current path to be interrupted between a first contact arrangement 28 and a second contact arrangement 29. The second contact arrangement 29 connects, depending on the embodiment and purpose of the switching field, an inlet or outlet, for example an outdoor bushing or a cable outlet, when the circuit breaker is closed ( not shown) via a phase terminal 30 to the bus bars 24, 25th

In the present embodiment, the first busbar section 13 has a first terminal 21, the second busbar section 14 has a second terminal 22, and the third busbar section 15 has a third terminal 23.

Via these connections 21, 22, 23, the busbar sections 13, 14, 15 are each connected to a single-phase, encapsulated first disconnect device 33, a second disconnect device 34, and a third disconnect device 35, respectively. The isolator modules each have an elongated shape and thereby define a first separator axis 36, a second separator axis 37 and a third separator axis 38. The separator axes 36, 37, 38 extend parallel to one another and to the first connection axis 5 of all phases. Since the separator axes 36, 37, 38 are consecutive in the Y direction in FIG. 1, only the separator axis 38 is visible and designated in FIG. The separator axes 36, 37, 38 are arranged in a common separator plane 39. The reader recognizes that the aforementioned splitter plane 39 has been explained relative to the first bus bar 24, so that, strictly speaking, it is the first splitter plane 39. Since the first busbar 24 and the second busbar 25 are constructed and arranged mirror-inverted relative to the first connection axis 5, corresponding isolator modules are also arranged there whose separator axes extend parallel to one another and are arranged in a second separator plane 40. The first isolator component 33, the second isolator component 34 and the third isolator component 35 are in turn connected via a first branch module 42, a second branch module 43 and a third branch module 44 to the first power connection 3 of the circuit breaker (2) assigned to the respective phase. Since the branch modules 42, 43, 44 are in succession in the Y direction in FIG. 1, only the branch module 44 is visible and designated in FIG. A flange connection of the first branching module 42 leading to the first isolating component 33 is arranged in the direction of the first connection axis 5 at the level of a first node point. A leading to the second isolator module 34 flange connection of the second branch module 43 is arranged in the direction of the first connection axis 5 at the level of a second node. A leading to the third separator block flange connection of the third branch module is seen in the direction of the first connection axis 5 at the level of a third node 47. All these nodes are located on a node line 48 which extends parallel to the busbar axes 13, 14, 15 (see FIG. 5). These branch modules 42, 43, 44 are all identical in construction and each have a rough-shaped current sensor 49 extending around the gas space. The current sensors 49 have seen in the direction of the first connection axis a certain length, which ultimately determines the size of the distance between the node line 48 and the longitudinal axes 9. In order to keep a total height of the switching field 1 in the direction of the first connection axis 5 as low as possible, the second busbar axis 14 is closer to the first power switch 2 seen in the direction of the first connection axis 5 than the node 47 and the node line 48. The third busbar section 12 is seen in the direction of the first connection axis 5 even closer to the first power switch 2 arranged as the second busbar axis fourteenth

The offset of the third busbar axis 14 to the busbar plane 17 is seen in the direction of the longitudinal axis 9 (ie in the direction of the X-axis) selected so that the third busbar axis 15 is also arranged in the first separator plane 39. This makes it possible for the third busbar section 15 to be connectable directly to an end face of the third disconnector module 35 assigned to it via its third terminal 23, without the need for intermediate modules. In other words, the third terminal 23 simultaneously acts as a terminal construction 19.

In the first busbar 24, the distances between the first busbar axis 13 and the second busbar axis 14, and between the second busbar axis 14 and the third busbar axis 15 in the direction of the first connection axis 5 (Z-direction) seen massively equal and therefore form a unit distance 50. The same is also the case with the second Sannnnelschiene 25, the first Sannnnelschienenabschnitt 10 and the fourth Sannnnelschienenabschnitt 100 are not offset in height.

The branch modules 42, 43, 44 are arranged not only on the first power connection 3, but also on the second power connection 6 of the power switches 2, which leads to an incoming or outgoing connection at the phase termination 30. The branch module connected to the second power connection 6 is referred to as a branch module 52 for the sake of discrimination. Accordingly, the branch modules 52 at the second power connection 6 are largely identical to the branch modules 42, 43, 44 and also each have a current sensor 49. Accordingly, the branch modules 52 each have a node 47, which are arranged on a node line 48 analogous to the branch modules 42, 43, 44. In the embodiment of the switching field 1 shown in FIG. 1, the branch modules 42, 43, 44 and the branch modules 52 also each have an integrated grounding device 53.

The actual nominal conductor sections of the three electrical phases are each held and guided via single-phase insulators in the metal-enclosed housings of the switchgear modules. Single-phase insulators accordingly serve to receive only a single phase conductor or busbar conductor in the case of the busbar sections 13, 14, 15.

In FIG. 1, the current path between the nominal conductor of the third busbar section 12 and the phase connection 30 has been shown in a simplified sectional view through isolator modules, branch modules 44, 52 and circuit breaker 2.

Before discussing the first embodiment of the switch panel 150 in the second mounting state in the form of a dome panel 150 according to Figure 2, it is noted with regard to the panel 1 according to Figure 1 that the first busbar axis 13, the second busbar axis 14, the third Busbar axis 15, as well as the fourth busbar axis defined by the fourth busbar section 100, the fifth busbar axis defined by the fifth busbar section 110, and the sixth busbar axis defined by the sixth busbar section 120 with respect to the coordinate system in FIG whose XZ plane is in each case at a predefinable or predefined geometric location (or geometric position). The busbar axes of the switching field 150 in the second mounting state according to FIG. 2 are thus in each case at the same geometric location with respect to the coordinate system in its XZ plane as in the first mounting state according to FIG.

The switching field shown in Fig. 2 is shown in the same view as in Fig.1. The description of identical or equivalent elements compared to the panel 1 for the dome panel 150 is therefore omitted and the reference characters maintained accordingly. Therefore, mainly the differences to the switching panel 1 of the first embodiment will be pointed out below.

In contrast to the switching field 1 of the first mounting state, in the switching field 150 of the second mounting state, the first busbar is no longer connected to the first power connection 3 but to the second power connection 6 of the circuit breaker 2. This makes it possible to interrupt the current path between the first contact arrangement 28 connected to the second busbar 25 and the second contact arrangement 29 connected to the first busbar 24.

Since the branch modules 42, 43, 44 are identical in construction to the further branch module 52 assigned to the second power connection 6, the branch module at the second power connection 6 is also referred to as branch module 44 in this embodiment of the control panel 150. Instead of the isolating modules leading to the first busbar, the openings of the branching modules at the first power connection 6 are now each closed by a closure cap 54. The same applies correspondingly to the unused phase connection at the branch module 44 assigned to the second power connection 6.

2, the connection from the first branch module 42 to the first busbar section 10 takes place via an isolator module in the same arrangement as in the second busbar 25. Accordingly, the connection from the second branch module 43 to the second busbar section 11 takes place via an isolator module in the same Arrangement as in the second busbar 25. Unlike the switch panel 1 according to FIG. 1, the connection of the third busbar section 12 to the third disconnector module 35, however, does not take place directly, but via a connection structure 19, which is not in the third connection 23 of the third busbar section 12 is integrated. However, in order to still be able to reuse the same third busbar section 12, as in the first mounting state, the connection structure 19 is designed such that it permits a direct connection of the third busbar section 12 via the third connection 23, as in the first mounting state.

Since the geometrical location of the busbar axes of the first busbar 24 and the second busbar 25 remained unchanged in comparison with the cubicle of FIG. 1, however, the geometry of the connection of the first busbar 24 to the second power connection 6 largely corresponds to the geometry of the connection of the second busbar 25 corresponds to the first power connection 3, the position of the first separator plane 39 changed. This separator plane 39 now no longer comprises the third separator axis 38, but is arranged in the X direction away from the second connection axis 8 by a corresponding amount.

It can be seen from the cubicles 1, 150 of FIGS. 1 and 2 that many assemblies or component parts can be used both for the assembly of a cubicle 1 and for the assembly of a cubicle 150. This is not least due to the fact that in the X direction, a distance from the second connection axis 8 to the first separator plane 39, a distance from the first separator plane 39 to the busbar plane 17, a distance from the busbar plane 17 to the third busbar axis 15th , a distance from the third busbar axis 15 to the first connection axis 5, a distance from the first connection axis 5 to the second separating plane 40 and a distance from the second separating plane 40 to the further busbar plane 26 are all selected to be equal and thus establish a further unit spacing (see in particular Fig. 2). The second embodiment of a double busbar switching field 160 shown in FIG. 3 corresponds functionally to the switching field according to FIG. 1. The basic connection of the busbar sections to the circuit breaker is also largely identical. The description of identical or equivalent elements compared to the panel 1 for the second embodiment of the panel 160 is therefore omitted and the reference characters maintained accordingly. Therefore, mainly the differences from the panel 1 of the first embodiment will be pointed out below. The switch panel 160 according to FIG. 3 differs from the switch panel 1 according to FIG. 1 in that the bus bars 24, 25 together with the isolator modules leading to the branch modules are arranged mirrored relative to a virtual plane 55. The virtual plane 55 extends through the node line 48 and parallel to the longitudinal axes 9 in the XY plane. As a result, the second busbar axis 14 is no longer located closer to the longitudinal axis 9, but the first busbar axis 13.

In an alternative embodiment of the switching panel 160 shown in FIG. 3, depending on the length of the current sensor 49, provided that this current sensor is present at all, it is possible to further reduce the overall height of the switching field in the Z direction if it is in the direction of the first connection axis 5 extending distance

56 is reduced between the first and / or second isolator module 34 and the power switch 2, so that the node line 48 comes closer to the longitudinal axis 9. In all embodiments of switching fields disclosed in this document, an identical to the first disconnect device disconnect device can also be used as a second disconnect device, when a Z-direction extending distance measure between the first node and the first busbar axis 13 is the same size as a likewise in Z-direction extending distance measure between the second node and the second busbar axis 14th

In the switching field 160, the offset of the third busbar axis 15 to the busbar plane 17 in the X direction is so great that sufficient space is available for the arrangement of an operator platform 57 for an operator 58. This operating platform

57 is seen in the direction of the first connection axis 5 (ie in the Z direction) seen above the third disconnector module 35 on a side facing away from the circuit breaker of the third disconnector module 35 at a height 20 relative to the bottom 60. Analogously, a further operating platform 57 is arranged above the fifth busbar section 110. The operating platforms 57 are attached to the structure of the switching panel 150 via a construction not specifically shown for the sake of clarity of FIG. 3 and have one or as shown in FIG. 3 two railings as needed.

Since the switch panel 160 is designed for a substation with a nominal operating voltage of more than 245 kV, it is so large of its overall dimensions that For example, a viewing of sight glasses 59 with switching units from the bottom 60 is not or only unsatisfactorily good feasible. As can be seen from the lines of view shown in dashed lines in Fig. 3, the operator 58, a viewing of the sight glasses 59 from the operating platforms for an operator, however, quickly, easily and safely feasible.

The second embodiment of a double busbar switching panel 170 shown in FIG. 4 corresponds functionally to the cubicle according to FIG. 2. The basic connection of the busbar sections to the circuit breaker is also largely identical. The description of identical or equivalent elements compared to the switching field 2 for the second embodiment of the panel 170 is therefore omitted and the reference characters maintained accordingly. Therefore, mainly the differences from the panel 150 of the first embodiment will be pointed out below.

The switch panel 170 according to FIG. 4 differs from the switch panel 150 according to FIG. 2 in that the bus bars 24, 25 together with the isolator modules leading to the branch modules are arranged mirrored relative to a virtual plane 55, as has been explained with reference to FIG ,

The terminal structure 19, which connects the third busbar section 15 to the third disconnect module 35 of the first busbar 24, extends in the X-direction through an area of the operating platform 57, so that in the Y-direction it is a small obstacle for an operator who otherwise passes through walkable operating platform 57 forms.

However, as can be seen from FIG. 5 showing a section of a substation 63 in conjunction with FIG. 6, this small obstacle in the form of connection construction 19 in the switching field 170 can only be overcome locally and easily by an operator 58 in the second mounting state. In a first embodiment, the operating platform 57 extending transversely (ie in the Y direction) over a plurality of panels of the first mounting state 160 has in the region of the adjacent structure 19 at the third busbar section 15 a vertical offset 64 of the operating platform 57 that can be reached via one or more staircase steps ,

For the sake of clarity and clarity, the representation of the operating platform 57 belonging to the railing in Figures 5 to 7 has been omitted. In order to be able to attach two neighboring panels 160, 160 or 160, 170 in the Y direction as close to each other as possible without impairing the interchangeability of the panels, so-called transverse mounting modules or transverse disassembly modules can be at least partially integrated into the busbar sections as required. In the alternative embodiment of the operator's path illustrated with reference to FIG. 7, the operating platform 57 is locally interrupted in the Y-direction in the region of the tubular connection construction 19 in comparison with the embodiment according to FIG. The connecting structure 19 is designed in terms of its dimensions so that it can easily be overridden by an operator 58 on the operating platform 57 of the substation 630 by means of a large step.

For the present embodiments of all disclosed in this document switching panels of the second mounting state (dome panels), it is irrelevant whether the third busbar section 12 with one of the two viewed in the direction of the longitudinal axis 9 (ie in the X direction) laterally arranged circuit breakers, or connected to the intermediate middle circuit breaker.

LIST OF REFERENCE NUMBERS

70 cubicle 36 first separator axis

2 circuit breaker 37 second disconnector axis

3 first power connection 38 third disconnector axis

4 first flange 39 first splitter plane

5 first connection axis 40 second separating plane

6 second Leistungsan42 first branch module circuit

7 second flange 43 second branch module

8 second connection axis 44 third branch module

9 longitudinal axis 47 third node

10 first busbars 48 node points straight

section

1 1 second busbar 49 current sensor

section

12 third busbar 50 unit distance

section first busbar 52 branch module

axis

second bus 53 grounding device

axis

third collection cap 54 Cap

axis

Projection level 55 virtual level

Busbar level 56 distance

Number 57 operating platform

Connecting construction 58 Operator

Height from ground 59 sight glass

first connection 60 floor

second connection 63,630 substation

third connection 64 Vertical offset

first busbar 100 fourth busbar section second busbar

additional busbar level

first contact arrangement

second contact arrangement

phase connection

first isolator module

second isolator module

third isolator component

Claims

Claims:

1 . Gas-insulated switchgear panel (1, 150, 160, 170), having three conductor phases for different electrical potentials, each conductor phase being interruptible with its own circuit breaker (2), and the circuit breakers (2) being each longitudinal axis (2) due to their elongated shape ( 9), and wherein each power switch (2) has a first power terminal (3) defining a first connection axis (5) orthogonal to the longitudinal axis (9), and wherein the power switch (2) comprises a second power terminal (6 ) which extends in the same direction as the first connection axis (5) orthogonal to the longitudinal direction (9) and defines a second connection axis (8), the switching field further comprising a first gas-insulated busbar section (10), a second gas-insulated busbar section (11 ) and a third gas-insulated busbar section (12),

the busbar sections (10, 11, 12) each defining, by their elongate shape, a first busbar axis (13), a second busbar axis (14) and a third busbar axis (15),

wherein the first busbar axis (13), the second busbar axis (14) and the third busbar axis (15) are arranged parallel to one another,

and wherein the busbar sections (10, 11, 12) are insulated in a single phase and offset from one another in the direction of the first connection axis (5) such that their projections do not overlap each other on a projection plane (16) extending at right angles to the longitudinal axis (9) .

and wherein the first busbar axis (13) and the second busbar axis (14) are arranged in a common busbar plane (17), while the third busbar axis (15) faces parallel to this busbar plane (17) on one of the first connection axis (5) Side of the busbar plane (17) is arranged. 2. Gas-insulated switch panel according to claim 1, characterized in that the switch panel in a first mounting state (1) and a second mounting state (150) is mountable, wherein a. in the first mounting state (1, 160), the first busbar section (10), the second busbar section (11) and the third busbar section (12) are electrically connected to the respective first circuit breaker terminal (3) so that the first busbar axis (13), the second busbar axis (14) and the third busbar axis (15) are located at a predefinable locus;

b. in the second mounting state (150, 170), the first busbar section (10), the second busbar section (11) and the third busbar section (12) are electrically connected to the second circuit breaker terminal (6) so that the first busbar axis (13), second bus bar axis (14) and the third bus bar axis (15) are at the same geometric location as in the first mounting state.

Gas-insulated switchgear panel according to one of the preceding claims, characterized in that the distances (50) between the first busbar axis (13) and the second busbar axis (14), and between the second busbar axis (14) and the third busbar axis (15) in the direction of first connection axis (seen) are the same size.

Gas-insulated switchgear panel according to one of the preceding claims, characterized in that the first power switch (2) is connected via its first power connection (3) and a first disconnector component (33) to the first busbar section (10), the second power switch (2) via its the first power connection (3) and a second isolator module (34) are connected to the second busbar section (11), and the third power switch (2) is connected to the third busbar section (12) via its first power connection (3) and a third isolator component (35) ) connected is,

wherein the first isolator module (33) defines by its elongated shape a first separator axis (36), the second separator module (34) defines a second separator axis (37) by its elongated shape, and the third separator module (35) defines a third separator axis by its elongate shape (38), wherein all separator axes (36, 37, 38) extend parallel to one another and are arranged in a common separator plane (39).

5. Gas-insulated switchgear panel according to claim 4, characterized in that the separator plane (39) extends parallel to the first connection axis (5). 6. Gas-insulated switchgear panel according to one of claims 4 or 5, characterized in that the third busbar axis (15) in the splitter plane (39) is arranged.

7. Gas-insulated switchgear panel according to one of claims 4 to 6, characterized marked, that between the first power connection (3) of the first circuit breaker (2) and the first isolator module (33), a first branch module (42) is arranged, wherein a first disconnect device (33) leading flange (21) of the first branch module (42) is arranged in the direction of the first connection axis (5) at the level of a first node,

and in that a second branch module (43) is arranged between the first power connection (3) of the second circuit breaker (2) and the second isolator module (34), a flange connection (22) of the second branch module (43) leading to the second isolator module (34). is arranged in the direction of the first connection axis (5) at the level of a second node, and in that a third branch module (44) is arranged between the first power connection (3) of the third circuit breaker (2) and the third isolator component (35) is arranged at the level of a third node (47) in the direction of the first connection axis (5) to the third isolator module (35) leading to the flange connection (23) of the third branch module (44),

wherein these nodes lie on a common node line (48) and the node line (48) extends parallel to the third busbar axis (15).

8. Gas-insulated switch panel according to claim 7, characterized in that the first busbar axis (13) in the direction of the first connection axis (5) seen closer to the first power switch (2) is arranged, as the second busbar axis (14),

wherein the first busbar axis (13), viewed in the direction of the first connection axis (5), is arranged closer to the first power switch (2) than the first busbar axis (13) first node (47).

9. Gas-insulated switch panel (160, 170) according to one of the preceding claims, characterized in that the third busbar section (12) in the direction of the first connection axis (5) seen above the third disconnector module (35) on a the circuit breaker (2) remote side of the third isolator module (35) is arranged.

10. Gas-insulated switch panel (160, 170) according to claim 9, characterized in that the third busbar axis (15) parallel so far to the common

Busbar plane (17) on one of the first connection axis (5) facing side of the busbar plane is arranged, so seen in the direction of the first connection axis (5) above the second busbar section on a side facing away from the circuit breaker side of the second busbar section space (18 ) is provided for an in the direction of the third busbar axis (15) extending platform (57) for an operator (58) of the gas-insulated switch panel (160, 170).

1 1. Gas-insulated switch panel (160, 170) according to claim 10, characterized in that in the space (18) above the second busbar section (1 1) on a side facing away from the power switch (2) side of the second busbar section (1 1) one in the direction of the third Busbar axis extending platform (57) for an operator (58) of the gas-insulated switch panel (160, 170) is arranged.

12. substation (63, 630) with at least one gas-insulated switch panel (1, 150, 160, 170) according to one of the preceding claims.

13. substation according to claim 12, characterized in that the substation has a plurality of switching fields (1, 160) which are mounted in the first mounting state, and at least one further switching field (150, 170), which is in the second mounting state,

wherein the space (18) for a platform (57) extending in the direction of the third busbar axis for an operator (58) of the gas-insulated Switching panel (1, 150, 160, 170) is provided over a plurality of these panels (1, 150, 160, 170) extends.

14. substation according to claim 13, characterized in that a platform (57) for the operator (58) of the gas-insulated switch panel (1, 150, 160, 170) in this place (18) is arranged and over several of these panels (1 , 150, 160, 170).