35 results about "Padmount transformer" patented technology

Combined type transformer includes: a transformer core; first and second coils provided with respect to the transformer core; first and second inductor cores provided around the first coil; and third and fourth inductor cores provided around the second coil. The transformer core and the first and second coils constitute a transformer, the first coil and the first and second inductor cores constitute a first inductor, and the second coil and the third and fourth inductor cores constitute a second inductor.

The present disclosure is directed to a padmount transformer. The padmount transformer includes an electrical distribution transformer housed in a cabinet that can be mounted on a ground level platform or pad. High / medium voltage connectors of the electrical distribution transformer can connect to high / medium voltage terminals of a power supply network. Low voltage connectors of the electrical distribution transformer are configured to connect to low voltage terminals of one or more loads coupled to respective renewable energy sources. The high / medium voltage connectors and the low voltage connectors are housed in the cabinet. An energy storage apparatus is housed in the cabinet and is connected with the low voltage connectors for supplying power to the loads. Power can be supplied to the energy storage apparatus by the renewable energy sources. An inverter is operable for commanding the power supply direction at the energy storage apparatus and a control unit is configured to control the inverter.

The invention relates to the field of power transformers, in particular to a combined transformer for wind power generation which is matched with a wind generation set. The transformer comprises an oil tank and a winding in the oil tank, wherein the winding adopts a three-winding form and is provided with a low-voltage input, a medium-voltage input end and a high-voltage output end; wherein the winding on the low-voltage side adopts a Z-shaped connection mode, and the lead bus of the winding on the low-voltage side adopts a local double-row parallel structure; a low-voltage chamber, a medium-voltage chamber and a high-voltage chamber which are independent are correspondingly arranged outside the oil tank; and two parallel high-voltage current limiting fuses are arranged in the low-voltage chamber. According to the combined transformer for wind power generation, The transformer structure is improved, and the capacity of the transformer is improved; and moreover, due to the improvement of the capacity, the external structure is adjusted, so that a high-capacity wind generation set is well matched to structure to accord with the mainstream trend of wind generation development.

The invention belongs to the technical field of box-type transformers, and particularly relates to a box-type combined transformer which comprises a box-type transformer body, galvanized plates are fixedly connected to the inner wall of the box-type transformer body, a transformer chamber is arranged between the two galvanized plates, a high-voltage chamber is arranged on the left side of the transformer chamber, and a low-voltage chamber is arranged on the right side of the transformer chamber. According to the invention, through use of an exhaust fan, an air suction pipe and an air guide plate, heat in the box-type transformer body can be effectively discharged; then, through cooperation of a refrigerator, an air inlet pipe, an air pump, an air blowing pipe and the air guide plate, coldair can be blown into the box-type transformer body, and the box-type transformer body can be internally cooled effectively; and through the cooling fan, the flowing speed of the cold air in the box-type transformer body can be increased, so that the cooling effect of the box-type transformer body is improved, and the service life of the box-type transformer body is prolonged.

The invention relates to a combined transformer. The combined transformer comprises a transformer oil tank, a transformer body is arranged in the transformer oil tank, a tap-changer is arranged on oneside of the left or the right of the transformer body, the combined transformer further includes a high voltage fuse installed on the same side with the tap-changer, and the high voltage fuse stretches along forward and backward directions. The high voltage fuse of the combined transformer is arranged on one side of the left or the right of the transformer body, the upper space of the oil tank isnot occupied by the high voltage fuse, accordingly the height of the transformed oil tank is lowered, and the high voltage fuse is installed on the same side with the tap-changer, the inner space ofthe oil tank is sufficiently used, the overall size of the oil tank is reduced, accordingly the cost of the transfer oil tank is reduced.

A combined transformer / inductor device includes a core having a central core leg and an outer core leg spaced apart from the central core leg, an inner bobbin disposed around the central core leg, an outer bobbin disposed around the inner bobbin and the central core leg and having an upper portion having a first oblong portion disposed around the outer core leg, a lower portion having a second oblong portion disposed around the outer core leg, and a central portion disposed around the inner bobbin and the central core leg, a first winding wound around the inner bobbin, and a second winding wound around the outer bobbin, the second winding having a first portion wound around the first oblong portion, a second portion wound around the central portion, and a third portion wound around the second oblong portion.

The invention discloses a sub-box combined type transformer, and belongs to the technical field of transformers. The sub-box combined type transformer comprises a box body, a power transformer, high-voltage switch equipment and low-voltage switch equipment, wherein the interior of the box body is divided into three cavities by partition plates, and the high-voltage switch equipment, the power transformer and the low-voltage switch equipment are arranged in the three cavities respectively. The sub-box combined type transformer further comprises a water collecting tank fixedly connected to the upper end of the box body through a supporting rod; a filter shed fixedly connected to the water collecting tank; and a flow dividing box which is fixedly connected to the box body, wherein an air inlet of the flow dividing box is internally and fixedly connected with a suction fan through a support. When the sub-box combined type transformer is used, the temperature around the sub-box combined type transformer can be adjusted according to the external temperature, the sub-box combined type transformer can stably work in different environments, and the practicability of the sub-box combined type transformer in actual use is effectively improved.

The invention provides a surface layer structure for a combined transformer shell. A door frame, an opening and a radiator shutter are arranged in the transformer shell; and a high pressure chamber door and a low pressure chamber door are arranged in the transformer shell; the surface layer structure is characterized in that by combining the positions of the door frame, the opening and the radiator shutter in the transformer shell, a painting layer in line with the installation environment pattern of the combined transformer is integrally distributed on the high pressure chamber door, the low pressure chamber door and the side wall of the shell; and a layer of protective varnish playing roles of sun shading, rain protection and corrosion prevention is covered on the painting layer. By adopting the surface layer structure and the surface layer processing method provided by the invention, the problem that the appearance of the original combined transformer is inharmonious with the surroundings is solved, patterns fused with the surrounding environment can be painted according to the actual situation no matter in what places, so that harmonious and attractive effects are reached; and moreover, through brushing varnish on the surface, sun shading, rainproof and corrosion-proof requirements of the painted pattern can be ensured, and the service life of the painted pattern is guaranteed.

The present disclosure is directed to a padmount transformer. The padmount transformer includes an electrical distribution transformer housed in a cabinet that can be mounted on a ground level platform or pad. High / medium voltage connectors of the electrical distribution transformer can connect to high / medium voltage terminals of a power supply network. Low voltage connectors of the electrical distribution transformer are configured to connect to low voltage terminals of one or more loads coupled to respective renewable energy sources. The high / medium voltage connectors and the low voltage connectors are housed in the cabinet. An energy storage apparatus is housed in the cabinet and is connected with the low voltage connectors for supplying power to the loads. Power can be supplied to the energy storage apparatus by the renewable energy sources. An inverter is operable for commanding the power supply direction at the energy storage apparatus and a control unit is configured to control the inverter.

The invention belongs to the technical field of transformers, and aims to solve the problem of no axial heat dissipation channel inside the existing transformer cake coil, and specifically relates to a combined transformer coil support system, including a multi-layer support component for carrying the coil cake, a multi-layer The support assembly is connected by an axial connection assembly; the support assembly includes M combined spacer units radially arranged on each layer of coil cake; the combined spacer units arranged on adjacent coil cakes are arranged in a staggered manner; the combined spacer unit includes two slots Two grooved gaskets, two grooved gaskets are respectively arranged on the upper and lower sides of each layer of coil cake; one end of the grooved gasket is provided with a first opening slot opening inward, and a bracket assembly is arranged in the opening slot, and the bracket assembly is set There is a second open slot perpendicular to the first open slot, which opens inwardly, and is used to embed multi-turn windings; through the present invention, multiple axial heat dissipation channels can be provided in the coil cake, which simplifies the coil structure and enhances the coil strength at the same time , effectively improve the overall heat dissipation efficiency.

The invention relates to the technical field of transformer manufacturing, in particular to a three-phase combined transformer which comprises an A-phase transformer, a B-phase transformer and a C-phase transformer. The bottoms of the A-phase transformer, the B-phase transformer and the C-phase transformer are fixedly connected with steel underframes; a corrugated pipe is fixedly connected between the A-phase transformer and the B-phase transformer, and a lead is arranged in the corrugated pipe, so that the B-phase transformer and the C-phase transformer are electrically connected; a corrugated pipe is also fixedly connected between the B-phase transformer and the C-phase transformer; according to the invention, the three-phase integrated on-load tap-changer is reasonably arranged, the arrangement mode of leads is improved, the workload of lead channels and field installation is reduced, and the internal insulation performance and the field installation quality of the transformer are ensured; the corrugated pipe and the integral steel underframe are reasonably arranged, so that the adjusting quantity of field installation is ensured, and the installation error is avoided; the transformer is small in on-site occupied area and light in transportation weight.

A 35 kV combined transformer shaped like a Chinese character 'pin' is characterized in that a low-voltage switch equipment chamber, a high-voltage cable chamber and a transformer body are arranged on a mounting plane in a shape like the Chinese character 'pin', a high-voltage switch operation box and a high-voltage fuse operation box are respectively arranged at two ends of the transformer body, and box doors of the high-voltage fuse operation box and the high-voltage switch operation box are mutually independent and are not on the same operation plane; the high-voltage switch operation box and the high-voltage cable chamber box door are mutually independent and are on the same operation surface; and the high-voltage fuse operation box and the low-voltage switch equipment chamber box door are mutually independent and are on the same operation surface. According to the combined transformer, the expansion space of a low-voltage loop is ensured, the installation requirement of multiple low-voltage loop incoming and outgoing lines is met, the layout is more reasonable, and the space utilization rate is higher; the function interval is clearer, the high-voltage switch equipment and the high-voltage fuse are mutually independent in side operation, and operation and maintenance are convenient and safe; and the arrangement of the radiator is not influenced by high and low voltage chambers, the arrangement space is larger, and the temperature rise of the product can be controlled.

The invention relates to a remote operation sub-box combined transformer. The transformer comprises a main oil tank, an auxiliary oil tank and a transformer body; the auxiliary oil tank penetrates through the upper portion of the main oil tank, and a full-sealed structure is formed between the auxiliary oil tank and the main oil tank; a fuse and a load switch are arranged in the auxiliary oil tank; a low-voltage chamber and a transformer chamber are arranged on the front side of the transformer main oil tank in parallel; a high-voltage bushing of the transformer is directly ejected out of thetank cover and is connected with a high-voltage line through an overhead conductor; and an independent fuse chambe, is arranged on one side of the main oil tank and is isolated from the main oil tank.By adopting a high-voltage overhead line structure, a high-voltage cable can be directly connected to the supporting insulator from a line, the use amount of user cables, cable trench construction and the like can be saved, and the remote operation sub-box combined transformer has the characteristics of simple structure, reliable performance, good sealing effect, convenience in installation, complete protection functions, small occupied area and convenience in maintenance.

The invention discloses a combined transformer of a wind generating set. The combined transformer comprises single-phase transformers, a high-voltage switch cabinet and a low-voltage switch cabinet, wherein the single-phase transformers comprise a first single-phase transformer, a second single-phase transformer and a third single-phase transformer, the first single-phase transformer, the second single-phase transformer and the third single-phase transformer are uniformly arranged at the periphery of a fan tower, the first single-phase transformer, the second single-phase transformer and the third single-phase transformer are connected to form a Dyn11 connection group, one end of the high-voltage switch cabinet is connected with a high-voltage winding of the single-phase transformers, theother end is connected with a power transmission line, one end of the low-voltage switch cabinet is connected with a low-voltage winding of the single-phase transformers, and the other end is connected with the fan generator. The combined transformer is advantaged in that the single-phase transformers are uniformly arranged on the periphery of the fan tower, so the capacity of the transformers isnot limited by the space in the fan tower, the bottom section of the fan tower can be uniformly stressed, and the transformers are arranged on the periphery of the fan tower, so the transformers are better in heat dissipation performance and more convenient to maintain.

The invention discloses a winding system of a combined annular transformer. The system comprises a semi-arc transformer winding insulating framework to be wound, the semi-arc transformer winding insulating framework is an arc-shaped insulating sleeve structure, and a semi-arc iron core bin is arranged in the semi-arc transformer winding insulating framework; and a first outer edge and a second outer edge are integrally arranged at the two ends of the arc structure of the semi-arc transformer winding insulating framework respectively. The winding system is simple in structure, the winding device of the annular transformer is simpler in structure and designed for the novel combined transformer, and a specific working principle and a technical progress are shown in the specific implementation mode of the specification.

A system and method for allowing islanding in an underground power distribution network when power is lost to the network. The network includes transformers having source side and load side switching devices and servicing a transformer section. The method includes detecting loss of voltage to the network, opening the source side and the load side switching devices in all of the transformers and allowing distributed power generation sources in the sections serviced by the transformers to provide power to the section. The method also includes closing one or both of the source side switching device and the load side switching device of a transformer that services a section that has power generation sources providing excess power, and closing a source side switching device or a load side switching device in an adjacent transformer to the transformer section providing excess power to provide power to the adjacent section.

A combined transformer / inductor device includes a core having a central core leg and an outer core leg spaced apart from the central core leg, an inner bobbin disposed around the central core leg, an outer bobbin disposed around the inner bobbin and the central core leg and having an upper portion having a first oblong portion disposed around the outer core leg, a lower portion having a second oblong portion disposed around the outer core leg, and a central portion disposed around the inner bobbin and the central core leg, a first winding wound around the inner bobbin, and a second winding wound around the outer bobbin, the second winding having a first portion wound around the first oblong portion, a second portion wound around the central portion, and a third portion wound around the second oblong portion.

The invention discloses a single-phase / two-phase-to-three-phase power supply structure, and belongs to the technical field of power supply and distribution of a power grid. The structure comprises a power transmission line, a power converter and a single-phase combined transformer. A three-phase port of the single-phase combined transformer serves as an output port to provide a three-phase power supply for users, and the input end of the power converter is connected with the power transmission line. The single-phase combined transformer is formed by connecting a first single-phase transformerand a second single-phase transformer through the power converter, the input side of the first single-phase transformer in the single-phase combined transformer is connected with the power transmission line, and the input end of the second single-phase transformer in the single-phase combined transformer is connected with the output end of the power converter. According to the invention, a three-phase power supply can be provided for users through a single-phase wire and a two-phase power transmission line, and the structure can be widely applied to power distribution system transformation andfault repair.

The invention belongs to the field of voltage transformation equipment, and particularly discloses a combined transformer, which comprises a transformer main body, a transformer base and a transformershell, wherein a protruding first positioning pile is arranged on the upper portion of the transformer base, a first positioning groove formed by sinking is formed in the position, corresponding to the first positioning pile, of the lower portion of the transformer main body, the first positioning pile extends into the first positioning groove, a protruding second positioning pile is further arranged on the upper portion of the transformer base, a sunken second positioning groove is formed in the position, corresponding to the second positioning pile, of the lower portion of the transformer main body, and the second positioning pile extends into the second positioning groove. Compared with the prior art, the combined transformer is of a combined structure, the transformer main body and the transformer base are detachably connected, the installation difficulty is reduced, and the safety during installation is improved; and the positioning pile for quick positioning is arranged betweenthe transformer main body and the transformer base, so that the mounting efficiency and the mounting precision are improved.

The invention relates to the technical field of transformers, and discloses a combined transformer power supply structure which comprises a bottom plate, a box body and power supply structures, wherein the box body is arranged on the upper surface of the bottom plate, the box body is fixedly connected with the bottom plate, and two supporting plates are arranged in the box body; the two ends of the two supporting plates are fixedly connected with the corresponding inner side walls of the box body, sliding grooves are formed in the upper surfaces of the two supporting plates, sliding blocks are arranged in the two sliding grooves in a sliding mode, sliding plates are arranged on the upper surfaces of the two supporting plates, and the lower surfaces of the two sliding plates are fixedly connected with the corresponding sliding blocks; the two power supply structures are arranged on the upper surfaces of the corresponding sliding plates correspondingly and fixedly connected with the corresponding sliding plates. According to the combined transformer power supply structure, the power supply structure can be quickly and conveniently taken out from the box body, and the power supply structure can be conveniently maintained and repaired.

The invention relates to the technical field of transformers, in particular to a combined transformer support. The combined transformer support comprises a transformer fixing surface, the fixing surface is formed by welding four angle steels end to end, mounting holes are formed in four vertex angles of the fixing surface respectively, supporting legs are connected to the lower portions of the four vertex angles of the fixing surface respectively, a layer of anti-skid gasket is arranged at the bottom of each supporting leg, and the anti-skid gaskets are movably connected with the supporting legs. The combined transformer support is simple in structure, reasonable in design, mounting and dismounting between the fixing face and the supporting legs are convenient, the mounting and dismountingefficiency is high, the structural design of the anti-skid gasket at the bottom of the supporting frame improves the mounting and fixing stability, and the elastic material layer is arranged on the surface of the fixing face, so that it is guaranteed that after a transformer is mounted, the connection with the fixed surface is firmer, certain elasticity is achieved, and a certain vibration interval is reserved.

The invention discloses a three-phase and single-phase universal integrated full-capacity power transformer which comprises a transformer iron core, the transformer iron core is of a five-column structure, phase modulation switches are additionally arranged at the head and the tail of a high-voltage B phase, the head end of the high-voltage B phase is located on the upper portion during three-phase operation, the head end of the high-voltage B phase is located on the lower portion during single-phase operation, and the heads and the tails of low-voltage three phases are all led out. And D, Y and i outputs can be realized through copper bar connection, and b phases are reversely connected end to end during i output. A five-column iron core is adopted, a phase modulation switch is additionally arranged on a high-voltage B phase, and low-voltage end-to-end leading-out is carried out, so that a conventional three-phase integrated power transformer can be used as a full-capacity single-phase transformer. Compared with a traditional three-phase combined transformer, the cost can be reduced by 30%, and the occupied area can be reduced by 50%.

The invention belongs to the technical field of transformers, aims to solve the problem that no axial heat dissipation channel exists in an existing transformer cake type coil, and relates to a combined transformer coil supporting system. The system comprises multiple layers of supporting assemblies used for bearing coil cakes; the multiple layers of supporting assemblies are connected through axial connecting assemblies; each supporting assembly comprises M combined cushion block units which are radially arranged on each layer of coil cakes; the combined cushion block units arranged on the adjacent coil cakes are arranged in a staggered mode; each combined cushion block unit comprises two groove-shaped gaskets which are arranged on the upper side and the lower side of each layer of coil cakes respectively; and a first opening groove with an inward opening is formed in one end of each groove-shaped gasket, a support assembly is arranged in each opening groove, a second opening groove which is perpendicular to the first opening groove and has an inward opening is formed in the support assembly and used for embedding a multi-turn winding. According to the combined transformer coil supporting system of the invention, a plurality of axial heat dissipation channels can be provided in the coil cakes, so that a coil structure is simplified, the coil strength is enhanced, and the overall heat dissipation efficiency is effectively improved.

The invention relates to a combined transformer load switch and plug-in fuse interlocking method and device. The method is characterized in that: an interlocking device is arranged, a protective cover rotating shaft of the interlocking device is welded to a protective cover, a fixing plate is welded to an oil tank cover plate, and a clamping plate is fixed to a rotating shaft mounting hole of a load switch; when an insulation operating rod hooks a handle operating hole of the load switch and rotates clockwise to a switching-on position, a transformer is in a switching-on state, the clamping plate clamps the protective cover, the protective cover cannot turn over, and the load switch and a plug-in fuse are in a hidden state; when the protective cover rotates anticlockwise to an opening position, the transformer is in a disconnected state, the clamping plate loosens the protective cover, the protective cover can be turned over, and the load switch and the plug-in fuse are in an open state; a rotation angle of the insulating operating rod is limited by the clamping plate, and the high-voltage fuse is controlled to be powered on or powered off; and in a power-off state, the clamping plate loosens the protective cover and the protective cover can be turned over. The method and the device have the advantages of preventing the protection plate from turning over, preventing misoperation, preventing power grid safety accidents and the like.