WO1998037606A1 - Poste d'equipements haute tension - Google Patents

Poste d'equipements haute tension Download PDF

Info

Publication number
WO1998037606A1
WO1998037606A1 PCT/SE1998/000318 SE9800318W WO9837606A1 WO 1998037606 A1 WO1998037606 A1 WO 1998037606A1 SE 9800318 W SE9800318 W SE 9800318W WO 9837606 A1 WO9837606 A1 WO 9837606A1
Authority
WO
WIPO (PCT)
Prior art keywords
switchgear
module
station
voltage
metal
Prior art date
Application number
PCT/SE1998/000318
Other languages
English (en)
Swedish (sv)
Inventor
Kjell Johansson
Jan Karlsson
Mats Leijon
Leif Sköld
Lars Walfridsson
Dan Windmar
Original Assignee
Abb Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abb Ab filed Critical Abb Ab
Priority to EP98907310A priority Critical patent/EP0968554A1/fr
Priority to AU63151/98A priority patent/AU6315198A/en
Priority to JP53657098A priority patent/JP2001512657A/ja
Publication of WO1998037606A1 publication Critical patent/WO1998037606A1/fr

Links

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
    • H02B7/00—Enclosed substations, e.g. compact substations
    • H02B7/06—Distribution substations, e.g. for urban network
    • 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
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing

Definitions

  • the present invention relates to an electric switchgear station of "the type defined in the preamble to claim 1, to a switchgear module for use in such a switchgear station and to a method of building such a switchgear station.
  • switchgear stations for high voltage are generally placed outdoors and take a considerable a- mount of space.
  • the switchgear station is assembled on site and the apparatus connected together.
  • switchgear stations In view of its size and, in the eyes of many people, its unsightly appearance, switchgear stations have generally had to be located far from residential districts and other areas frequented by people. They are therefore often located far from built-up areas. In many cases this results in undesired restriction of their localisation. Besides which, the construction of a switchgear station on site is relatively costly.
  • the concept of high voltage relates to a voltage level of 72.5 kV and upwards, preferably 145 - 420 kV.
  • Gas-insula-ted switchgear stations of this type are therefore complicated, take a long time to repair after a fault, and complicate any extension with additional compartments, particularly after a long time when it may be difficult to obtain spare parts.
  • the service life of switchgear stations is approximately 30 years.
  • DE-A-41 39 177 discloses such a switchgear station having an outer building in which the electric apparatus are housed.
  • the apparatus are arranged in chassis allowing to be mounted to each other within the building.
  • FR-A-2 566 199 discloses a unit for a switchgear having an outer shell around the apparatus, which is air-insulated. The unit has partitions divid- ing it into a large number of compartments in rows in two directions, having electric apparatus provided in the compartments.
  • a similar switchgear station is disclosed in FR-A-2 530 881.
  • the switchgear station known through these disclosures overcome to some extent the drawbacks entailing the conventional switchgear stations initially discussed.
  • the object of the present invention is to provide an enclosed, air-insulated switchgear station that is compact, flexible and reliable, and in addition allows rational erection and mainte- nance, and providing a higher safety level to service personnel .
  • these objects are achieved by a high-voltage switchgear station of the type described in the preamble to claim 1 having the special features defined in the characterizing part of this claim, according to a second aspect by a switchgear module of the type described in the preamble to claim 15 having the special features defined in the characterizing part of this claim, and according to a third aspect by a method as described in the preamble to claim 37 having the special features defined in the characterizing part of this claim.
  • each unit being a separate construction module, a very high degree of flexibility is attained in that each unit as such constitutes a protecting shell. Thereby, the need for a surrounding building is eliminated as well.
  • the unit can be connected and built up into a switchgear station designed to respond to various requirements. The limitation of having to stick to a certain layout as a consequence of all apparatus being arranged in one single enclosure with partition walls is avoided.
  • the compartments formed by the metal enclosures have direct access from the interior of the station. Thereby, maintenance and repais are facilitated.
  • the need for special service paths within the station itself is eliminated, which makes a more compact layout possible.
  • the safety distance means the minimum distance in the air required between high voltage and the part in a plant on which service or repair work is to be performed. This distance comprises a distance determined by the voltage the equipment must be able to withstand without flashover, termed the least free air distance, and also a distance necessary to obtain a safety factor for maintenance and repairs.
  • the first- mentioned distance may be reduced when apparatus are placed in earthed enclosures with controlled environment.
  • the second distance can be disregarded if an earthed metal wall (enclosure) exists between high- voltage and the apparatus which is to undergo maintenance or repair.
  • the environment inside the enclosure is per se air, as in the case of apparatus in conventional switchgear stations in the open air, but the environment can be controlled in a completely different way inside such an enclosure in comparison with outdoors, and rain is of no consequence.
  • the porcelain can also be dimensioned with shorter leakage paths. This facilitates the location of high-voltage switchgear stations in built-up areas, both from the financial and the environmental aspect.
  • the switchgear station is suitably designed so that each individual metal enclosure contains electric apparatus related to one and the same phase.
  • An individual metal enclosure preferably encloses a plurality of high-voltage electric apparatus. This enables reduction of the dimensions of the switchgear station, and the advantages of module a switchgear station can be exploited, as well as reducing the manufacturing and operating costs.
  • a safety measure for satisfactory operation and personal safety is to divide the high-voltage switchgear station into enclosures for each current-path out of the enclosure to a place other than the switchgear station mentioned hexe, and individual enclosures for apparatus that section the current-path which connects the enclosures .
  • the metal enclosures are in the form of rectangular boxes stacked on top of and beside each other. This permits rational combination of the switchgear station, facilitates transport of the units and also facilitates manufacture of the enclosures and the apparatus enclosed therein.
  • three boxes are preferably stacked one on top of the other, each box containing electric apparatus related to one of the three phases, thereby achieving an expedient and easily surveyed structure of the switchgear station.
  • This embodiment is particularly suitable when the alternative of internal busbars described below is used.
  • the busbars per- taining to the switchgear station are located either outside or inside the metal enclosures.
  • the former case offers great flexibility- in exchanging individual metal enclosures in the switchgear station, but on the other hand the reduction in space in comparison with a conventional switchgear station is not fully exploited.
  • the switchgear station is so designed that a positive pressure of filtered air prevails inside the enclosures. This positive pressure is relatively weak but has the effect of preventing particles from penetrating in and causing serious disturbance of the electric fields. This increases the feasibility of having short free air distances.
  • each module can be provided with monitoring equipment that senses the state and the course of events inside the modules.
  • the sensed values can be transmitted to a control unit that need not be located immediately beside the rest of the switchgear station.
  • the switchgear station is designed in this way.
  • the signals are transmitted to the control centre via optocable and are processed in microprocessors.
  • the increased opportu- nity to keep a careful watch on the switchgear station enables maintenance according to fixed schedules to be reduced and to a great extent replaced by maintenance when the control signals indicate that such is necessary.
  • the modules are provided with means for connection to either overhead lines or cables.
  • the first alternative may be advantageous in outer parts of a community where overhead lines can be drawn without much problem and where the more expensive laying of " ground cables can be avoided, but in urban areas ground cables may be necessary and the modules should therefore be adapted therefor.
  • the modules according to a preferred embodi-ment are provided with means for connection thereto, suitably in the form of pantograph disconnectors. Functional and safe connection of the modules is thus obtained to the external busbars and the modules can easily be moved or replaced.
  • the individual modules suitably contain sections thereof. This entails an additional step in the module concept and the advantages it offers.
  • a dielectric screen is arranged at the passage of the busbar through the enclosure so that, should an electric arc occur inside an enclosure, it is prevented from passing from the flashover point to adjacent enclosures, and the damage is thus limited.
  • the busbar is provided with a surrounding insulating layer close to the dielectric screen.
  • modules of this type can be supplied as prefabricated units. That the modules are prefabricated thus constitutes an important preferred embodiment . They can thus be manufactured at the factory, enabling rational and cost-efficient production of the modules, regardless of local conditions where the switchgear station is to be erected. The apparatus in the modules and the module connections can also be tested at the factory and the switchgear station can thus essentially be put together using plug-in units.
  • the section of a busbar situated in a module consists of cable terminations. Damage caused by an electric arc is thus re- stricted to the module where the arc arose.
  • the modules can also easily be separated if the cable is to be extended.
  • the module includes a truck breaker. This enables several disconnection points to be operated in a single movement, which also contributes to reduced module size. A truck breaker can also easily be taken out of the module for maintenance .
  • the module is provided with a screen member that can be manoeuvred to assume a position in which a part of the interior of the module is screened from the remaining part. This means, for example, that the section of the busbar located in the module can be screened off from the apparatus in the module. With the screen lowered, service can be performed on the apparatus even if the busbar is current-carrying.
  • the invention relates to a method of constructing a high-voltage switchgear station as defined in claim 37, where the opportunities for exploiting the rationalisation advantages offered by the switchgear module according to the invention are made use of.
  • Figures 1-3 show schematic views in perspective of alternative embodiments of the switchgear station according to the invention
  • Figures 4-6 show schematic views from above of additional embodiments of the switchgear station according to the invention
  • Figure 7 is a horizontal section through a switchgear station according to one embodiment of the invention
  • Figure 8 is an enlarged part section of the switchgear station shown in Figure 7 with the apparatus in a first position
  • Figure 9 is a section as in Figure 8 but with the apparatus in a different position
  • Figure 10 is a view in perspective of a module accord- ing to the invention, with one side wall of the enclosure removed
  • Figure 11 is a vertical section through a module according to an alternative embodiment of the invention
  • Figures 12-16 show different details of the apparatus in a module according to the invention
  • Figure 17 is a vertical section through a module according to yet another alternative embodiment of the invention
  • Figure 18 shows a section through a detail according to Figure 17.
  • Figure 1 shows in perspective how a switchgear station according to the invention might look.
  • the switchgear station is dimensioned for nine three-phase current lines and -comprises 27 switchgear modules in the form of rectangular containers or boxes 1 with uniform dimensions, where each box may have a width of 2 m, a length of 4.5 m and a height of 3 m.
  • the boxes are stacked in threes, one on top of the other, with one box for each phase in a line, and the stacks are placed close together.
  • the switchgear station shown thus has a length of 18 m, a width of 4.5 m and a height of 9 m. All the boxes have metal walls and are earthed.
  • Each module is provided with doors 2, drawn in on only one of the boxes in the Figure, through which service per- sonnel can gain access to the interior of the module but only under certain conditions and restrictions which will become apparent further on in the description.
  • the interior of the lowermost modules can be accessed directly from ground level whereas stairs and walkways are arranged to enable access to the two upper rows of modules.
  • the switchgear station shown is much smaller than a conventional switchgear station of equivalent type and requires as little as about 1/4 the area.
  • the embodiment shown in Figure 1 is of the in- ternal busbar type, these running inside the modules in the longitudinal direction of the switchgear station and passing between the walls to adjacent modules. This type offers the most compact design. Since the switchgear station is based on the use of identical boxes, a discrete and uniform exterior can be obtained that will easily fit in with the surroundings in an acceptable manner even in urban areas.
  • a switchgear station of this type may be arranged to be connected to earth cables as shown in Figure 2 in a six-compartment embodiment, or to overhead lines as shown in an embodiment with four compartments in Figure 3.
  • Figures 2 and 3 also illustrate how each of the modules is provided with a cable connection 3 or overhead line connection 4, respectively.
  • Both the cable embodiment in Figure 2 and the overhead line embodiment in Figure 3 may in either of the alternatives have external busbars and/or internal busbars.
  • it may be advanta- geous to arrange the adjacent stacks of modules a certain distance apart in order to create a greater distance between the phases.
  • docking modules may be placed between the equipment modules.
  • Figure 2 also shows symbolically how the switchgear station may be provided with a unit comprising a fan 90 and air filter 92 connected to the switchgear station by means of an air duct 91, thereby placing the switchgear enclosures under a slight positive pressure with filtered air.
  • the switchgear station may also be provided with a control unit 93 which, via a signal lead 94 such as an op- tocable, controls and monitors the switchgear station.
  • a control unit 93 which, via a signal lead 94 such as an op- tocable, controls and monitors the switchgear station.
  • Figures 4-9 illustrate schematically a bird's-eye view of a number of other examples of switchgear stations according to the invention.
  • FIG 4 illustrates an embodiment with overhead lines 5 in three lines with busbars 6, 7, 8 arranged outside the switchgear modules.
  • the switchgear station is of the single busbar type.
  • the switchgear station transformers are designated 9.
  • Each switchgear module 1 is connected to its own busbar by means of a disconnector 10, suitably of pantograph type, arranged on the upper side of the module.
  • Figure 5 also illustrates an exam- pie with overhead lines 5 and external busbars 6, 7, 8, 6X 1 ' , 8', but is of the double busbar type.
  • each phase 5a, 5b, 5c in a line is connected to its own module. Relatively great flexibility as to the layout of the switchgear station is obtained with embodiments of the type shown in Figures 4 and 5 and individual modules can easily be exchanged for maintenance and service, for instance.
  • Figure 6 shows an example of a switchgear station with internal busbars.
  • the flexibility is less here than in the embodiments shown in Figures 4-5, but less space is required for this switchgear station.
  • the modules for the three phases are placed one on top of the other in a stack 11, and each phase 5a, 5b, 5c in each line 5 is connected to one of the three modules in the stack 11.
  • the illustrated layout can be used for various types of arrangements of busbars such as single busbars, single busbars in an H-connection, and busbars connected in a ring.
  • FIG. 7 shows a schematic horizontal section through a switchgear station according to the invention with internal busbars, comprising nine modules of which six are breaker modules la, lb, Id, If, lh, li and the re- maining three lc, le, lg are sectioning modules by which the busbar is divided into four sections 12a-12d.
  • the purpose of dividing, the busbar into sections is that if a fault occurs in one of the breaker modules la, the defect module can be isolated and the intact part of the switchgear station can be supplied from one of the connections at either end of the switchgear station. The defect module can then be repaired while ad- jacent modules are in operation. The disconnectors and breakers in the modules can be pulled back from the connections with the busbar 12.
  • Figures 8 and 9 show the modules lc-e in Figure 7 on a larger scale.
  • Figure 8 shows the arrangement in connected position and Figure 9 in disconnected position.
  • the busbar In the position shown in Figure 8 the busbar is closed since its sec- tions 12a, 12b and 12c are connected with each other through the disconnectors 13c and 13d of the sections lc and le, while the truck breaker 14d is in switched- on position.
  • Movable curtains 15c, 15e are arranged in modules lc and le, that can be pulled out from their retracted position to the screening po- sition shown in Figure 9 where the equipment in each module is screened from the busbar 12.
  • the curtains are pulled out as shown in Figure 9, service and maintenance work can be performed on the equipment without the busbar having to be made currentless.
  • FIG 10 illustrates schematically and in perspective the interior of a module with a truck breaker 14.
  • the module might be module Id, for instance, in Figure 8.
  • the module 1 comprises an earthed metal enclosure with ceiling 16, floor 17, front end wall 18, rear end wall 19 and two " side walls, of which only one, 20, is visi- ble in the Figure.
  • the metal enclosure forms a paral- lel-epipedic box having a length 4.5 m, width 2 m and height 3 m, and the walls may consist of 2 mm corrugated steel sheet.
  • the rear end wall comprises two doors 21.
  • the metal enclosure is provided with a cable connector 3 and cable termination 22.
  • the busbar 12 consists of an aluminium pipe with a diameter of approximately 200-250 mm that conducts the current to/from equipment in adjacent enclosures, a tight dielectric barrier 49 being arranged at its exit through the side wall 20. Electric arcs are thus prevented from moving through the switchgear station.
  • the busbar 12 is provided with an insulating layer 55 from the dielectric screen 49 and a short distance along the busbar. A material other than aluminium may naturally be used for the busbar.
  • the large diameter of the aluminium pipe results in the field strength at its surface being less and the field in the air is thus more homogenous.
  • a truck runs on a pair of iron rails 23 on the floor 17 of the enclosure, the truck carrying the equipment of the truck breaker 14 arranged to be displaceable from a connected position to a disconnected position when the truck breaker is pulled back towards the rear end wall 21.
  • the frame of the truck is of aluminium or painted steel.
  • the truck breaker is shown in a position immediately prior to connection.
  • the rails 23 consist of angle sections oriented with one corner up- wards and the truck wheels 24 correspond thereto.
  • the travelling movement of the truck breaker is achieved by a control device 25 on the truck, provided with a stop 27 fixed in the floor 17 of the enclosure.
  • a single-pole circuit breaker 28 is fitted horizontally on the truck and provided at its end with a contact 31 with a counter-contact 32 on the busbar. Around the contact 31 the breaker is provided with a screen 29 in order to achieve a desired electric field distribution in the relatively short air gap between the current path and the enclosure 15.
  • the breaker 28 is supported by a pin insulator 33 resting on the bottom plate 34 of the truck.
  • a metal screening body 30 is arranged where the breaker 28 rests on the pin insulator 33 and has the same function as the screen 29.
  • An upwardly di- rected conductor 35 leads via a screen body 36 at its upper end, and a horizontal conductor 37, is electrically connected to an upper contact 38.
  • the conductors 35 and 37 consist of aluminium pipes.
  • the upper screen body 36 is supported by a horizontal pin insulator 39 fitted to a back plate 40 of the truck.
  • the porcelain of the breaker 28 is shorter than normal in order to reduce the length of the truck and thus the length of the module. The shorter length is possible thanks to the screen bodies mentioned and since the leakage paths can be made shorter as no consideration need be given to rain.
  • the upper contact 38 is arranged for connection to a counter-contact (not shown) on the cable termination 22, which counter-contact is surrounded by a screening body 39.
  • a downwardly directed pin insulator 40 supports the counter-contact of the cable termination 22.
  • a surge arrester 41 is also provided between the screening body 39 and the front wall 18 of the enclo- sure 15 in order to take care of dangerous over- voltages .
  • an earthing device 43 can be connected via its contact 44 to the current path entering via the cable 3 so that this is connected to earth potential.
  • the front wall 18 of the enclosure is provided with a relief hatch 45 through which over-pressure arising at a flashover inside the enclosure can be conducted away.
  • a metal screen 46 preferably of the roller blind type, shown in rolled-up position here, is arranged on the inside of the front wall.
  • the screen 46 connected to earth, is operated by a control device 47 and can be rolled out along a guide rail 48 arranged on the inside of both side walls 20.
  • the screen 46 screens off the area around the busbar from the rest of the interior of the enclosure.
  • the screen 46 can of course be arranged in some other manner than illustrated, e.g. in the ceiling 16 of the module or running vertically from the furthest side wall 20 to the nearest.
  • the screen may also be in the form of a folding door instead of a roller blind.
  • the doors -21 can only be opened when the screen 46 is in this extended position, whereupon maintenance personnel can gain access to the space inside the enclosure, but not to the screened-off area.
  • the truck can now be rolled out of the enclosure if so required.
  • FIG 11 shows schematically a module similar to that in Figure 10, but having an external busbar.
  • the module is connected to an earth cable and provided with a cable termination 22b.
  • the truck breaker 14' can travel in the module and is pro- vided with a lower contact 62 for connection to the cable termination 22b.
  • Its upper contact 63 is connected to a lead-through 50 from a pantograph disconnector 10 for connection to or disconnection from an external busbar (not shown) above the pantograph disconnector, as shown in Figures 4 and 5.
  • the disconnector 10 is operated by a separate, rotatable insulator 60 beside the lead-through. In this case a lead-through 50 of standard type can be used.
  • the rotary movement of the insulator 60 is controlled by a control device 64 and the movement is transmitted to the gear housing 65 of the pantograph disconnector.
  • An earthing device 66 operated by a control device 67 can connect the cable termination 22b with earth when the current-path is open so that the in-coming cable is connected to earth potential.
  • this earth device 68 moves the device 69 down to contact with the counter-contact 70 of the lead-through thereby connecting the latter to earth potential.
  • a surge arrester (not shown) is arranged to take care of dangerous over-voltages.
  • Figure 12 shows an alternative embodiment for manipulation of the pantograph disconnector 10.
  • the disconnector 10 is connected to or disconnected from the busbar 6 by a rotating control rod placed centrally in the lead-through and extending through the ceiling 16 of the enclosure.
  • FIG 17 shows an embodiment of a module with an external busbar (not shown) , which, as in Figure 11, is connected via a pantograph disconnector 10 with lead- through 50 which is operated in the same manner by a rotating insulator 60.
  • the enclosure is connected to an overhead line 79 instead of to a ground cable as in Figure 11.
  • the disconnector is connected to the high-voltage terminal 76 from the overhead lines by a circuit breaker 71 with screened terminals 74 and 75.
  • the high-voltage terminal 76 is arranged on a combined lead- through/disconnector/earthing device (LDE) 78. Earthing is achieved via the rod 87 in a manner described in more detail below in connection with Figure 18.
  • LDE lead- through/disconnector/earthing device
  • the pantograph disconnector 10 and LDE can be operated only when the breaker 71 is in its off position.
  • the breaker's terminal 74 is connected to earth potential by means of the earthing device 72, operated by the device 73 , which can only be done when the LDE high- voltage terminal is earthed. Access to the module is permitted only when both terminals are connected to earth.
  • Figure 18 illustrates the function of the combined lead-through/disconnector/earthing device 78 in Figure 17.
  • the LDE unit 78 comprises an insulating casing 81 for passage through the ceiling 16 of the enclosure. In- side this, an extension 86 of the high-voltage terminal 80 extends downwardly, terminating in a contact 82.
  • a movable contact 83 is arranged on a rotatable screw rod 87 extending upwardly into the insulated casing 81, said contact 83 communicating with the high-voltage terminal 76.
  • the screw 87 can be turned by means of a control device 84 so that it is displaced upwards or downwards.
  • the screw 87 is shown in its uppermost position, in which the contacts 82 and 83 are connected so that the current is carried from the overhead lines 79 to the high-voltage terminal 76.
  • At the lower end of the screw is an earth terminal 85 which, in the case shown, is not in contact with the screw 87.
  • the screw 87 can be moved downwards from the position shown by turning the screw 87, so that the contact 83 is separated from the contact 82 and the overhead lines are thus disconnected from the high-voltage terminal 76. In this lower position, the lower end of the screw 87 is moved down into contact with the earthed terminal 85 so that the high-voltage terminal 76 is earthed.
  • the equipment in the sectioning modules shown in Figures 8 and 9 is also preferably supported on a travel- ling truck.
  • a truck sectioner 13 is constructed in accordance with the same principles as the truck breaker described in connection with Figure 10, and reference is therefore made to this.
  • FIG. 13 shows an example of how the contact and counter-contact for. a truck breaker may be designed.
  • the contact 31' - on the breaker 28' is of female type whereas the - counter-contact 32' on the busbar 12 is of male type.
  • the jaw of the contact 31' is provided with contact means 51 that spring out of the way when the counter- contact 32' is inserted.
  • Figure 14 shows an alternative embodiment of maintenance-free contact and counter-contact.
  • measures have also been taken that facilitate keeping the dimensions of the module as small as possible in order to achieve a compact switching station.
  • the compactness results in a high and relatively uniform field strength over air distances from high voltage to earth.
  • the counter-contact 32" of the busbar 12 has therefore been provided in this embodiment with a surrounding dielectric barrier 52.
  • the barrier 52 When the contact 31" of the breaker 28" is moved to connection with the counter-contact 32" of the busbar 12, the barrier 52 will surround these and prevent sparks from the contacts from triggering flashovers be- tween contact and earth.
  • the dielectric barrier 52 may also be designed to assist in guiding the contacts into the correct position in a connecting operation.
  • FIG. 15 Another device that facilitates keeping the dimensions of the modules as small as possible is illustrated in Figure 15.
  • the in-coming cable 3 is passed through the wall 18 of the metal enclosure to a cable termination 22".
  • a metal ring is arranged around the cable at the inner end of the cable termination and electrically connected thereto so that the ring 56 acquires high-voltage potential.
  • Between this and the enclosure wall 18 are more such rings 57, 58, attached to the insulating surface 59 of the cable termination 22". These latter rings will thus be on a floating po- tential.
  • the field distribution is controlled ca- pacitively between high-voltage and earth through these rings 56, 57, 58.
  • the stress is therefore reduced at the most vulnerable points around the stress cone 61 of the cable termination 22".
  • This embodiment of the cable termination, together with the controlled climate inside the module, enables it to be made shorter than normal.
  • bus- bar 12' is instead composed of cable terminations 53a-f.
  • the cable terminations meet in pairs, they are braced by a support insulator 54 mounted on the front wall of the enclosure.
  • a special contact-free capacitive voltmeter with screening is used to measure the voltage, this having the advantage of being considerably smaller than conventional voltmeters, and of thus being suitable for use in a module according to the invention without no- ticeably increasing its size. It is also capable of measuring rapid transients.
  • Such a voltmeter is described in Swedish patent application 9602785-9.
  • the modules may be provided with double walls with insulation between them.

Landscapes

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

Abstract

La présente invention concerne un poste d'équipements haute tension comprenant une pluralité d'équipements électriques. Selon l'invention, les équipements électriques sont disposés dans une enceinte métallique (1) aéro-isolée et mise à la terre. L'invention concerne également un module d'équipement électrique destiné à un tel poste de commutation. Le module de l'invention comporte une enceinte métallique (1) renfermant l'équipement électrique aéro-isolé. L'invention concerne enfin un procédé de construction de poste d'équipements haute tension. En l'occurrence, le poste d'équipements haute tension est constitué des modules de l'invention dont les équipements électriques sont interconnectés, les enceintes métalliques étant mises à la terre.
PCT/SE1998/000318 1997-02-24 1998-02-23 Poste d'equipements haute tension WO1998037606A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98907310A EP0968554A1 (fr) 1997-02-24 1998-02-23 Poste d'equipements haute tension
AU63151/98A AU6315198A (en) 1997-02-24 1998-02-23 A high-voltage switchgear station
JP53657098A JP2001512657A (ja) 1997-02-24 1998-02-23 高圧スイッチ装置ステーション

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9700640A SE9700640L (sv) 1997-02-24 1997-02-24 Elektriskt ställverk
SE9700640-7 1997-02-24

Publications (1)

Publication Number Publication Date
WO1998037606A1 true WO1998037606A1 (fr) 1998-08-27

Family

ID=20405899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/000318 WO1998037606A1 (fr) 1997-02-24 1998-02-23 Poste d'equipements haute tension

Country Status (7)

Country Link
EP (1) EP0968554A1 (fr)
JP (1) JP2001512657A (fr)
CN (1) CN1252179A (fr)
AU (1) AU6315198A (fr)
SE (1) SE9700640L (fr)
WO (1) WO1998037606A1 (fr)
ZA (1) ZA981493B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016124873A1 (fr) * 2015-02-05 2016-08-11 Ineo Postes Et Centrales Procede de construction d'un poste interieur a haute tension a isolement dans l'air type cabine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103368084A (zh) * 2013-07-19 2013-10-23 万能亿自动化科技（苏州）有限公司 一种开关柜

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530881A1 (fr) * 1982-07-21 1984-01-27 Alsthom Atlantique Poste electrique d'interieur a haute tension
FR2566199A1 (fr) * 1984-06-13 1985-12-20 Merlin Gerin Poste interieur a haute tension a compartimentage par des elements standard
FR2579031A1 (fr) * 1985-03-14 1986-09-19 Merlin Gerin Poste interieur compartimente a haute tension
DE4139177A1 (de) * 1990-11-28 1992-06-04 L Enterprice Ind Sa Verfahren zum errichten einer hochspannungsinnenstation mit luftisolation und auf diese weise erhaltene station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530881A1 (fr) * 1982-07-21 1984-01-27 Alsthom Atlantique Poste electrique d'interieur a haute tension
FR2566199A1 (fr) * 1984-06-13 1985-12-20 Merlin Gerin Poste interieur a haute tension a compartimentage par des elements standard
FR2579031A1 (fr) * 1985-03-14 1986-09-19 Merlin Gerin Poste interieur compartimente a haute tension
DE4139177A1 (de) * 1990-11-28 1992-06-04 L Enterprice Ind Sa Verfahren zum errichten einer hochspannungsinnenstation mit luftisolation und auf diese weise erhaltene station

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. 93-84670/10, Week 9310; & SU,A,1 725 307 (TEPLOELEKTROPROEKT RES DES INST) 7 April 1992. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016124873A1 (fr) * 2015-02-05 2016-08-11 Ineo Postes Et Centrales Procede de construction d'un poste interieur a haute tension a isolement dans l'air type cabine

Also Published As

Publication number Publication date
EP0968554A1 (fr) 2000-01-05
ZA981493B (en) 1998-08-28
JP2001512657A (ja) 2001-08-21
SE9700640L (sv) 1998-08-25
SE9700640D0 (sv) 1997-02-24
AU6315198A (en) 1998-09-09
CN1252179A (zh) 2000-05-03

Similar Documents

Publication Publication Date Title
CA2396589C (fr) Sous-station compacte de distribution d'energie
JP4790801B2 (ja) ガス絶縁電力機器
US7813109B2 (en) Switchgear
US6195253B1 (en) Substation
CA2147085A1 (fr) Appareillage d'interruption blinde a coupure dans un gaz
US4237520A (en) Gas insulated switch-gear apparatus
CN201392989Y (zh) 顶部进出线开关柜
JPH0626444B2 (ja) 小容量配電用変電塔
EP0968554A1 (fr) Poste d'equipements haute tension
EP4367761A1 (fr) Sous-station de transformation électrique
CN209860412U (zh) 开关柜
JP3357750B2 (ja) ガス絶縁開閉装置
JP2798930B2 (ja) ガス絶縁開閉装置
JPH10210613A (ja) 複合形ガス絶縁開閉装置
JP3202302B2 (ja) 金属閉鎖形スイッチギヤ
JPH0152961B2 (fr)
JPH11155209A (ja) ガス絶縁キュービクル
JP2878705B2 (ja) 集合形変電設備
GB2083951A (en) High voltage electrical equipment
JP2851125B2 (ja) 集合形変電設備
JPH1032905A (ja) 集合形変電設備
TR2022001937A2 (tr) Metal plakalar sayesi̇nde bi̇rbi̇ri̇nden ayrilabi̇len orta geri̇li̇m şalt si̇stemleri̇nde kullanimi amaçlanan moduler ve dönüştürülebi̇li̇r i̇zolasyon kutbu
JPH0898344A (ja) ガス絶縁開閉装置
JP2024525626A (ja) 電力変換変電設備
JPH0739025A (ja) 集合形受変電設備

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 98804163.4

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ CZ DE DE DK DK EE ES FI FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 1998 536570

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1998907310

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 09355993

Country of ref document: US

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1998907310

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1998907310

Country of ref document: EP