132results about "Gas-insulated substations" patented technology

The present invention provides a gas-insulated electric apparatus which includes: a vertically-arranged gas insulation main tank; a first gas insulation branch pipe connected to and making right angle with the gas insulation main tank; a second gas insulation branch pipe connected to and making right angle with the gas insulation main tank; a breaker manipulator which is arranged on an upper side of the main tank, a feeder-side current transformer which is incorporated in the first gas insulation branch pipe; a voltage transformer arranged on the first gas insulation branch pipe; and an arrestor arranged on the first gas insulation branch pipe and connected with the feeder.

A system and method for coupling electrical power subsea. The system comprises a subsea electrical distribution system having at least one subsea circuit breaker assembly. The subsea circuit breaker assembly comprises a modular subsea busbar assembly configured to receive a plurality of modular cubsea circuit breaker assemblies and at least one modular subsea circuit breaker assembly secured to the modular subsea busbar assembly. The modular subsea circuit breaker assemblies may be coupled by subsea power cables to a source or power, an electrical load, or other subsea circuit breaker assemblies.

A gas insulated switchgear has: circuit breakers, circuit breaker vessels, first disconnector and maintenance earthning switches connected to first bus bars connected to circuit breaker vessels and also to main bus bars, second disconnector and maintenance earthning switches connected to second bus bars connected to the circuit breaker vessels, circuit breaker operating mechanisms, first and second disconnector and maintenance earthning switch operating mechanisms, and first and second disconnector and maintenance earthning switch operation links for linking the disconnector and maintenance earthning switches and the operating mechanisms for three phases. The second disconnector and maintenance earthning switch operation links are arranged so as to pass through inter-phases of the first bus bars and the operating panels of the circuit breaker operating mechanism and the first and second disconnector and maintenance earthning switch operating mechanisms of each phase are arranged on a common flat plane.

A gas insulated switchgear includes a plurality of T-branched circuit breaker units arranged in a direction perpendicular to the T-branch direction, and connected by first connection bus units and second connection bus units in series alternately in a rectangular wave shape on a horizontal plane of approximately the same height as the T-branch portions of the circuit breaker units. First connection buses and second connection buses are arranged around on the horizontal plane of the same height as the T-branch portions of the circuit breaker units, but are not arranged in an up and down direction.

The invention relates to a mobile substation in the substation field. The mobile substation comprises a high-voltage power transformation vehicle and a medium-voltage power distribution vehicle. The medium-voltage power distribution vehicle is equipped with a medium-voltage switchgear, secondary devices, secondary device accessories and a carrier for allowing the secondary devices / the secondary device accessories to be mounted. The medium-voltage power distribution vehicle is equipped with a prefabricated cabin. The medium-voltage switchgear, the secondary devices, the secondary device accessories and the carrier are arranged in the prefabricated cabin. The carrier is formed by secondary device mounting racks arranged in the prefabricated cabin; and the secondary device and the secondarydevice accessories are arranged up and down on the secondary device mounting racks. Compared with the prior art, the electrical components are arranged in the prefabricated cabin, so that the electrical components can be protected better, and integration degree of the medium-voltage power distribution vehicle is higher. Besides, the secondary devices in the prefabricated cabin are arranged vertically, so that height space of the prefabricated cabin is utilized fully, the volume of the prefabricated cabin is allowed to be more compact, and the medium-voltage power distribution vehicle is allowed to walk conveniently.

A converter building including at least one room having a solid room wall enclosing an interior space and an electrical active part contained in the interior space, the room wall having at least one opening, which is designed such that it allows a human to enter the interior space. The opening is sealable, the room wall encloses the interior space in a gas-tight manner when the opening is sealed, and the interior space contains a dielectric insulation medium including a dielectric insulation component other than air.

PCT No. PCT / DE97 / 01694 Sec. 371 Date May 28, 1999 Sec. 102(e) Date May 28, 1999 PCT Filed Aug. 6, 1997An attachment of high-voltage lead-in insulators (1, 1') on enclosure housings (1, 1') using elbow-shaped additional housings which have rotary joints to allow the insulators to rotate in order to maintain a connection distance.

In order to shorten the length of connection buses and reduce a cost, in the present invention, a plurality of T-branched circuit breaker units 12 are arranged in a direction perpendicular to the T-branch direction, and the plurality of circuit breaker units 12 are connected by first connection bus units 14 and second connection bus units 15 in series alternately in a rectangular wave shape on a horizontal plane of approximately the same height as the T-branch portions of the circuit breaker units 12. Thereby, first connection buses 5 and second connection buses 6 are stretched around on the horizontal plane of the same height as the T-branch portions of the circuit breaker units 12, but not stretched around in an up and down direction. Therefore, the length of the connection buses can be reduced, and the cost also can be reduced.

A switchgear enclosure is provided. The switchgear enclosure includes a plurality of switchgear panels and a plurality of ducts extending through the switchgear panels. Each switchgear panel includes an exterior housing, a busbar compartment defined within the exterior housing, and an exhaust system. The busbar compartment surrounds a busbar extending through the switchgear panel. The exhaust system includes a vent path structure configured within the exterior housing to at least partially surround the busbar compartment, a first channel defined between the vent path structure and the exterior housing, and a first vent opening formed on the vent path structure. The first vent opening directs arc gases within said busbar compartment to the first channel. The ducts are in fluid communication with the first channels of the switchgear panels to distribute arc gases between the first channels.

Disclosed is a gas-insulated switchgear device, in which a space for dismantlement and inspection work which facilitates the dismantlement and inspection work of circuit breakers at the time of the occurrence of accidents of the circuit breakers are provided and an installation area for the gas-insulated switchgear device can be reduced.The gas-insulated switchgear device includes a pair of spaced apart main bus lines, three circuit breakers connected between the main bus lines, a common space for dismantlement and inspection work provided between two of the three circuit breakers, and branch bus lines provided above the common dismantlement and inspection work space using the common dismantlement and inspection work space and disposed in such a manner that insulatedly leading-out directions of the branch bus lines cross in order to balance voltage. Even if the three circuit breakers are disposed along axial directions of the main bus lines, the dismantlement and inspection work space can be also used for arranging of the branch bus lines, whereby an installation area for the gas-insulated switchgear device can be reduced in a juxtaposition direction of the circuit breakers.

A system and method for coupling electrical power subsea. The system comprises a subsea electrical distribution system having at least one modular subsea circuit breaker assembly. The modular subsea circuit breaker assembly may be coupled to sources of power and / or subsea loads via one or more subsea power cable harness assemblies. The modular subsea circuit breaker assembly has at least electrical connector. Each subsea power cable harness assembly has a corresponding electrical connector. At least one of these electrical connectors is extendable to engage an electrical connector opposite it.

Single phase or polyphase switchgear having one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like. Both the switches and the associated live components are housed in a housing enveloping the switches and live components. The enveloping housing is filled with air having a low moisture content and the interior space thereof is sealed with respect to the exterior space around the enveloping housing in such a way that the air present in the housing is not contaminated and will not reach the dew point.

A gas-insulated power apparatus comprising a vertically arranged gas-insulated circuit breaker included in a vertically arranged gas-insulated main tank, a first gas-insulated branch pipe connected to one side of an upper portion of the gas-insulated main tank substantially orthogonal to a direction of extending the gas-insulated main tank and leading out a feeder from a movable side of the gas-insulated circuit breaker, and a second and a third gas-insulated branch pipes which are respectively connected to both sides in a peripheral direction of a lower portion of the gas-insulated main tank substantially orthogonal to the direction of extending the gas-insulated main tank, one of which connects a fixed side of the gas-insulated circuit breaker to one gas-insulated Y bus of gas-insulated double buses and other of which connects the fixed side of the gas-insulated circuit breaker to other gas-insulated X bus of the gas-insulated double buses, respectively, by which a gas-insulated power apparatus having a structure in which although a width thereof is more or less widened, a height thereof is hardly changed and which is stable can be realized.

The invention relates to a disconnecting switch assembly for disconnecting air-insulated electrical lines, which have one or more phases, with at least one grounded housing that is filled with protective gas, with open air ducts, which are attached to the housing(s) in a gastight manner and which each have an open-air connection for connecting the lines, and with gas-insulated disconnecting switches, which are placed inside the open-air ducts. At least three open air ducts are provided for each phase whose open-air connections can be electrically connected to one another by means of the disconnecting switch over current path piece mounted inside the housing.

The invention provides a container prefabricated-cabin transformer substation. The prefabricated-cabin transformer substation comprises a transformer which is in an outdoor use type, and is characterized in that the prefabricated-cabin transformer substation further comprises a high-pressure prefabricated cabin, a low-pressure prefabricated cabin and a secondary protection prefabricated cabin, wherein the high-pressure prefabricated cabin is provided with a cable which is connected with a high-pressure side of the transformer, and the high-pressure prefabricated cabin is made into a first container, the low-pressure prefabricated cabin is provided with a cable which is connected with a low-pressure side of the transformer, and the low-pressure prefabricated cabin is made into a second container; the secondary protection prefabricated cabin is provided with a cable which is connected with the transformer, and the secondary protection prefabricated cabin is made into a third container. Thereby, individualized design can be performed on devices required by the transformer substation according to actual demands, and the container prefabricated-cabin transformer substation is uniform in sizes, convenient to transport and easily extensible.

In a gas-insulated switchgear provided with three-phase main bus bars consisting of single-phase bus bars arranged in parallel with one another and three-phase circuit breakers that are arranged in parallel with one another in a direction perpendicular to the main bus bar and each have two connecting terminals that are spaced a predetermined distance apart from each other, the main bus bars are arranged between two connecting terminals of each of the circuit breakers.

A gas insulated switchgear has: circuit breakers, circuit breaker vessels, first disconnector and maintenance earthning switches connected to first bus bars connected to circuit breaker vessels and also to main bus bars, second disconnector and maintenance earthning switches connected to second bus bars connected to the circuit breaker vessels, circuit breaker operating mechanisms, first and second disconnector and maintenance earthning switch operating mechanisms, and first and second disconnector and maintenance earthning switch operation links for linking the disconnector and maintenance earthning switches and the operating mechanisms for three phases. The second disconnector and maintenance earthning switch operation links are arranged so as to pass through inter-phases of the first bus bars and the operating panels of the circuit breaker operating mechanism and the first and second disconnector and maintenance earthning switch operating mechanisms of each phase are arranged on a common flat plane.

A GIS bus spare interval power-uninterrupted extension function module, which is arranged on a first bus and a second bus of a GIS, comprises a first double-break disconnecting switch (DDS1), a second double-break disconnecting switch (DDS2), a first earthing switch (ES1), a second earthing switch (ES2), a third earthing switch (ES3), an extension end, a first air chamber, a second air chamber, a third air chamber, a fourth air chamber, and a fifth air chamber. The first double-break disconnecting switch (DDS1) and the second double-break disconnecting switch (DDS2) are of the same structure. The first double-break disconnecting switch (DDS1) and the second double-break disconnecting switch (DDS2) are each provided with two isolating breaks at the two sides respectively, and can be separated / connected at the same time. The advantage is that based on the double buses, that power is not interrupted and operation is safe and reliable in the whole process of new interval extension construction and hand-over withstand voltage test of GIS buses can be ensured with only one integrated module.

A gas-insulated power apparatus comprising a vertically arranged gas-insulated circuit breaker included in a vertically arranged gas-insulated main tank, a first gas-insulated branch pipe connected to one side of an upper portion of the gas-insulated main tank substantially orthogonal to a direction of extending the gas-insulated main tank and leading out a feeder from a movable side of the gas-insulated circuit breaker, and a second and a third gas-insulated branch pipes which are respectively connected to both sides in a peripheral direction of a lower portion of the gas-insulated main tank substantially orthogonal to the direction of extending the gas-insulated main tank, one of which connects a fixed side of the gas-insulated circuit breaker to one gas-insulated Y bus of gas-insulated double buses and other of which connects the fixed side of the gas-insulated circuit breaker to other gas-insulated X bus of the gas-insulated double buses, respectively, by which a gas-insulated power apparatus having a structure in which although a width thereof is more or less widened, a height thereof is hardly changed and which is stable can be realized.

The invention discloses a sliding type damping connection device for a transformer substation and relates to the technical field of connection of tubular buses and electrical equipment for transformer substations. The sliding type damping connection device comprises a telescopic deformable arc line, an inner casing pipe and an outer casing pipe, wherein one end of the arc line is welded on the inner casing pipe; the other end of the arc line is welded on the outer casing pipe; one end of the inner casing pipe is connected with an external equipment terminal plate; the other end of the inner casing pipe extends into the outer casing pipe and can slide in the outer casing pipe; and the outer casing pipe is used for fixing the external tubular bus. The sliding type damping connection device has the advantages that in case of earthquake, earthquake energy can be consumed by the sliding of the inner and outer casing pipes and the deformation of the arc line, so that the earthquake response of a lead is reduced, the interaction between the tubular bus and the electrical equipment is reduced and the earthquake resistance of the electrical equipment is improved.

The present invention provides a method of diagnosing a partial discharge in a gas-insulated apparatus and a partial discharge diagnosing system for carrying out the same to achieve highly accurate diagnosis through the detection of a partial discharge signal and diagnosing the partial discharge signal through multiple conditional branching. The partial discharge diagnosing system of the present invention comprises: a partial discharge signal detector for detecting a partial discharge signal representing a partial discharge produced in the gas-insulated apparatus, a signal analyzer for receiving the partial discharge signal detected by the partial discharge detector and analyzing the partial discharge signal, a diagnostic unit for determining a cause of the partial discharge on the basis of results of analysis made by the signal analyzer, and a display unit for displaying results of diagnosis. The diagnostic unit is provided with a diagnostic means to make multiple conditional branching to a plurality of second diagnostic means according to result of diagnosis made by a first diagnostic means, and obtains a result of diagnosis made by the second diagnostic means, thereby achieving highly accurate diagnosis by detecting the partial discharge signal and subjecting the partial discharge signal to multiple conditional branching.

The invention relates to a GIS equipment and transformer direct connecting device and a transformer station using same; the GIS equipment and transformer direct connecting device comprises an outer cylinder extending in an up-down direction; a connecting conductor conductively connecting a static contact on a transformer sleeve with a bus of the GIS equipment is arranged in the outer cylinder; the outer cylinder comprises an upper cylinder arranged outside the connecting conductor, and a lower cylinder fixedly assembled with the transformer sleeve and arranged outside the transformer sleeve; the upper and lower cylinders are mutually insulated and tightly assembled in one piece; the upper and lower cylinder can ensure the direct connecting device to normally work, thus providing corresponding insulation protection; the upper and lower cylinders are mutually insulated, thus effectively preventing induction currents and hot currents on the GIS equipment from being transferred to the transformer, and causing accident interferences.

A system and method for coupling electrical power subsea. The system comprises a subsea penetrator to seal an opening around a conductor extending through a partition or enclosure. The subsea penetrator comprises an integral current sensor operable to produce a signal representative of current through the conductor. The penetrator comprises a boot configured to seal the opening through which the conductor extends. The current sensor may be disposed within the boot.

An actuating device for an electric switchgear of the type having one or more bushings connected to a casing. The actuating device can include a gear mechanism which is suitable to be mounted at and outside the zone where a bushing is connected to the casing, and which includes a plurality of gears operatively interconnected to each other and arranged to move a bushing between a first service position and a second transport position wherein it is lowered towards the casing from the first service position. A connection can be arranged to keep the bushing operatively coupled to the casing while moving it between the first and second positions.

In a gas-insulated switchgear provided with three-phase main bus bars consisting of single-phase bus bars arranged in parallel with one another and three-phase circuit breakers that are arranged in parallel with one another in a direction perpendicular to the main bus bar and each have two connecting terminals that are spaced a predetermined distance apart from each other, the main bus bars are arranged between two connecting terminals of each of the circuit breakers.

The substation has at least one outdoor busbar (11, 12) as well as at least two switch bays which can be connected to the busbar and at least one encapsulated, gas-insulated, arrangement of switchgear modules (30) which is arranged in one of the switch bays. This switchgear arrangement contains at least one disconnector module (DS) and at least one circuit breaker module (CB). An installation module (MM) is arranged between the disconnector module and the circuit breaker module and allows lateral removal of at least one of the two switchgear modules (DS, CB). This substation is distinguished by high availability, since each of the most severely loaded components of the encapsulated switchgear arrangement, that is to say the disconnector module and the circuit breaker module, can be removed from the substation by lateral removal without having to change the position of the other components. Once the removed component has been replaced, the complete substation availability can be reproduced quickly and at low cost.

The present invention provides a connecting structure of a gas insulated switchgear and an oil-immersed transformer in which miniaturization and weight reduction are attained by suppressing axial length. One cone shaped insulation spacer 3 dividing insulating gas and insulating oil is arranged between the connection container 1 on a gas insulated switchgear 16 side in which the insulating gas is enclosed and the connection container 2 on an oil-immersed transformer 17 side in which the insulating oil is enclosed. The cone shaped insulating spacer 3 has a cone shape or a cross section shape similar thereto, having one side with projected surface and the other side with recessed surface, and the projected surface side is arranged on the gas insulated switchgear 16 side while the recessed side on the oil-immersed transformer 17 side. A buried conductor 4 for connecting the main circuit conductor 8 on the gas insulated switchgear 16 side to the flexible conductor 6 as the main circuit conductor of the oil-immersed transformer 17 is provided at the center portion of the cone shaped insulating spacer 3.

A system and method for coupling electrical power subsea. The system comprises a subsea electrical distribution system having at least one modular subsea circuit breaker assembly. The modular circuit breaker comprises a busbar enclosure housing a busbar. In one embodiment, the bus bar enclosure is pressurized with sulfur hexafluoride (SF6) gas. At least one circuit breaker enclosure housing a subsea circuit breaker is secured to the busbar enclosure. The interior of the busbar enclosure may be sealed from the interior of the circuit breaker enclosure. The circuit breaker enclosure may be pressurized with SF6 gas.

The invention concerns a high voltage polyphase so-called hybrid distributing station with single or double busbar set, comprising busbar connections (A, B, C, D) of air insulated lines (21, 22) and comprising shielded interruption and switching modules (1) each formed by a chamber (2) comprising for every current phase interruption and disconnect systems, an end disconnecting system (4A, 4B) being arranged at each end (13, 14) of a module. The invention is characterised in that the busbar connections are in opposite pairs facing each other, and two opposite busbar connections (A, B) are electrically connected for every current phase for a single module (1) when the interruption systems (3A, 3B, 3C) and the end disconnecting systems (4A, 4B) of said modules are closed, said end disconnecting systems being each connected to a busbar connection (A, B).