CN114300245A - Transformer system - Google Patents
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- CN114300245A CN114300245A CN202111654653.8A CN202111654653A CN114300245A CN 114300245 A CN114300245 A CN 114300245A CN 202111654653 A CN202111654653 A CN 202111654653A CN 114300245 A CN114300245 A CN 114300245A
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Abstract
The invention discloses a transformer system, which comprises at least two transformers, a first wiring assembly and a second wiring assembly, wherein primary windings of the transformers are mutually connected in parallel and electrically connected to the first wiring assembly, and secondary windings of the transformers are mutually connected in parallel and electrically connected to the second wiring assembly, so that the transformers are mutually connected in parallel and electrically connected. The transformer system can meet the requirements of various power grid operating conditions by reducing or increasing the parallel connection number of the transformers, and the utilization rate of the transformers and the electric energy utilization rate are improved; when the transportation condition is limited, the transformer system can transport a single transformer to an operation site independently and then assemble the transformer system, so that the adverse effects of transformer loss, magnetic leakage and the like are avoided, and the transportation difficulty of the transformer is effectively reduced; each transformer can operate independently without mutual influence, and when part of the transformers are damaged, the rest transformers can still operate normally, so that the continuity and reliability of power supply of a power grid are guaranteed.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer system.
Background
The distribution transformer is an important component of a distribution system of a high-rise building and a super high-rise building, is suitable for the high-rise building or the super high-rise building in research and development and is beneficial to promoting economic development and urban construction. At present, the problem of going upstairs in vertical transportation mainly exists when the distribution transformer is applied to high-rise buildings or super high-rise buildings. The vertical upstairs transportation of the distribution transformer is mainly influenced by two factors of weight and volume, wherein the weight and the volume of the transformer are related to the capacity of the transformer, and the capacity of the transformer is determined by the quantity of power equipment.
The traditional transformer transportation scheme is that the conventional 2t goods elevator is used for direct transportation, the transportation mode limits the capacity of the transformer to be not more than 400kVA, the transformer with the capacity is difficult to match with large-load equipment, and the power demand of a high-rise building or an ultra-high-rise building cannot be met. At present conventional transformer mostly is single structure, if adopt and transport with conventional 2t goods lift after breaking up the transformer, the method of reassembling after going upstairs, because transformer loss, magnetic leakage, the noise increase after the dismouting, and be the field installation, there is the operation risk in the transformer. If the transformer is transported upstairs by adopting an outdoor transformer hoisting mode, the outer vertical surface of the building and the transformer are easily damaged due to serious equipment shaking in the hoisting process. The distribution transformer is an important component in a power grid, and when the transformer fails to operate, the whole power grid stops operating, so that the continuity and reliability of power supply are seriously influenced.
Disclosure of Invention
Based on this, it is necessary to provide a transformer system, which aims to solve the problem that the conventional transformer is difficult to transport vertically upstairs in high-rise buildings or super high-rise buildings.
The present application provides a transformer system comprising:
at least two transformers;
a first wiring member;
and the primary windings of the transformers are mutually connected in parallel and electrically connected with the first wiring assembly, and the secondary windings of the transformers are mutually connected in parallel and electrically connected with the second wiring assembly, so that the transformers are mutually connected in parallel and electrically connected.
The transformer system has the following advantages:
(1) the transformer system electrically connects the primary windings of the transformers in parallel with each other to the first wiring assembly, and electrically connects the secondary windings of the transformers in parallel with each other to the second wiring assembly, so that the parallel connection of the transformers can be completed, and the electrical performance of the transformers after being connected in parallel is not different from that of a conventional single transformer product, namely the electrical performance of the transformer system is not different from that of the conventional single transformer product;
(2) the design capacity of the transformer is determined by the total number of the power equipment equipped in the building, and for the traditional transformer, in the initial stage of the engineering of a high-rise building or a super high-rise building, because various power equipment are not completely equipped, the equipped transformer far does not reach the expected load operation, the utilization rate of the transformer is low, and waste is caused; for the transformer system, the output working capacity of the transformer system can be reduced by reducing the parallel connection number of the transformers in the initial stage of the engineering so as to be adapted to the smaller required capacity of the electric power equipment in the initial stage of the engineering, and when the electric power equipment is increased in the later stage of the engineering, the output working capacity of the transformer system can be increased by increasing the parallel connection number of the transformers so as to meet the increased required capacity of the electric power equipment;
(3) under the condition of limited transportation conditions, the transformer system can firstly transport a single transformer to an operation site independently, then electrically connect the primary windings of the transformers in parallel with each other to the first wiring assembly, and electrically connect the secondary windings of the transformers in parallel with each other to the second wiring assembly to complete the assembly of the transformer system, and because the assembly of the transformer system is completed by simply electrically connecting the first wiring assembly and the primary windings of the transformers, the second wiring assembly and the secondary windings of the transformers, the performance of the transformers cannot be influenced in the process of the electrical connection, namely, the adverse effects of transformer loss, magnetic leakage and the like cannot occur, so compared with the traditional transformer, the transformer system can effectively reduce the transportation difficulty of the transformers and is suitable for more limited transportation environments, for example, high-rise and super high-rise buildings can not damage the performance of the transformer, and the probability that the normal operation of a power grid is influenced by the transportation fault of the transformer is reduced; furthermore, the transformer system can also be used for integrally transporting a plurality of transformers after the transformers are assembled;
(4) because the transformers are electrically connected in parallel, the transformers can operate independently without mutual influence, namely when part of the transformers in the transformer system are damaged, the rest transformers can still keep normal operation, the continuity and the reliability of power supply of a power grid are guaranteed, and the probability of economic loss caused by transformer faults is greatly reduced.
The technical solution of the present application is further described below:
in one embodiment, the first wiring assembly includes first wiring members equal in number to the number of phases of the primary windings of the transformers, and one and the same one of the primary windings of each of the transformers are electrically connected in parallel to each other to the same first wiring member.
In one embodiment, the second wiring assembly includes second wiring members equal in number to the number of phases of the secondary windings of the transformers, and one and the same of the secondary windings of each of the transformers are electrically connected in parallel to each other to the same second wiring member.
In one embodiment, one end of the first wiring piece is provided with a first bus wiring port, the first bus wiring port is used for being electrically connected with external equipment, and the other end of the first wiring piece is used for being electrically connected with one and the same phase of the primary winding of each transformer; and/or
One end of the second wiring piece is provided with a second general wiring port, the second general wiring port is used for being electrically connected with external equipment, and the other end of the second wiring piece is used for being electrically connected with one of the secondary windings of the transformers and the same phase.
In one embodiment, the primary winding of the transformer adopts a Y-connection method or a delta-connection method, the secondary winding of the transformer adopts a Y-connection method, the primary winding of the transformer is a high-voltage winding and has an A phase, a B phase and a C phase, the first connection assembly comprises three first connection pieces, and one of the A phase, the B phase and the C phase of the primary winding of each transformer is electrically connected with the same first connection piece in parallel;
the secondary winding of the transformer is a low-voltage winding and is provided with an a phase, a b phase, a c phase and a 0 phase, the second wiring assembly comprises four second wiring pieces, and one of the a phase, the b phase, the c phase or the 0 phase of the secondary winding of each transformer is electrically connected with the same second wiring piece in parallel.
In one embodiment, the primary winding of the transformer and the secondary winding of the transformer both adopt a delta connection method, the primary winding of the transformer is a high-voltage winding and has a phase A, a phase B and a phase C, the first connection assembly comprises three first connection pieces, and one of the phase A, the phase B or the phase C of the primary winding of each transformer is electrically connected to the same first connection piece in parallel;
the secondary winding of the transformer is a low-voltage winding and is provided with an a phase, a b phase and a c phase, the second wiring assembly comprises three second wiring pieces, and one of the a phase, the b phase or the c phase of the secondary winding of each transformer is electrically connected with the same second wiring piece in parallel.
In one embodiment, the transformer further comprises an iron core assembly, the iron core assembly is formed by splicing three frame-shaped iron cores, the circumferential side parts of two adjacent frame-shaped iron cores are spliced to form an iron core column, and the primary winding of the transformer and the in-phase winding of the secondary winding of the transformer are simultaneously wound on one iron core column.
In one embodiment, the transformer further comprises a clamping component, wherein the clamping component comprises an upper clamping piece and a lower clamping piece, an upper mounting space is formed in the upper clamping piece, a lower mounting space is formed in the lower clamping piece, one end of the iron core component extends into the upper mounting space, and the other end of the iron core component extends into the lower mounting space so that the clamping component can fix the iron core component.
In one embodiment, the transformer further comprises a base connected to a side of the lower clip remote from the core assembly.
In one embodiment, all the transformers are arranged and connected along the height direction of the transformer system, and the transformer system further comprises at least one connecting piece, and every two adjacent transformers are connected with each other through at least one connecting piece.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic perspective view of a transformer system according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a transformer system rotated by a certain angle according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a transformer in the transformer system according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a transformer in a transformer system according to an embodiment of the present invention;
FIG. 5 is a wiring schematic of the low voltage windings of the various transformers in the transformer system in accordance with one embodiment of the present invention electrically connected in parallel with each other;
fig. 6 is a wiring diagram illustrating the high voltage windings of the transformers in the transformer system electrically connected in parallel according to an embodiment of the present invention.
Description of reference numerals:
10. a transformer system; 100. a first wiring member; 110. a first wiring member; 1101. a phase A first wiring member; 1102. a phase B first wiring member; 1103. a phase C first wiring member; 111. a first bus line port; 200. a second wiring member; 210. a second wiring member; 2101. a phase second wiring member; 2102. b phase second wiring member; 2103. c-phase second wiring member; 2104. a 0-phase second wiring member; 211. a second bus connection port;
20. a transformer; 201. a first lug plate; 202. a tail lug; 203. a main lead; 204. an iron core assembly; 2040. a frame-shaped iron core; 205. a clip assembly; 2051. an upper clamp; 2052. a lower clamp; 206. a base.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Referring to fig. 1 to 4, a transformer system 10 according to an embodiment includes at least two transformers 20, a first wiring assembly 100 and a second wiring assembly 200, wherein primary windings of the transformers 20 are electrically connected to the first wiring assembly 100 in parallel, and secondary windings of the transformers 20 are electrically connected to the second wiring assembly 200 in parallel, so that the transformers 20 are electrically connected to each other in parallel.
The transformer system 10 has the following advantages:
(1) in the transformer system 10, the primary windings of the transformers 20 are electrically connected to the first wiring assembly 100 in parallel, and the secondary windings of the transformers 20 are electrically connected to the second wiring assembly 200 in parallel, so that the parallel connection of the transformers 20 can be completed, and the electrical performance of the transformers 20 after being connected in parallel is not different from that of a conventional single transformer 20 product, i.e., the electrical performance of the transformer system 10 is not different from that of the conventional single transformer 20 product;
(2) the design capacity of the transformer 20 is determined by the total number of the power equipment equipped in the building, and for the conventional transformer 20, at the initial stage of the engineering of the high-rise building or the super high-rise building, because various power equipment are not completely equipped, the equipped transformer 20 far does not reach the expected load operation, the utilization rate of the transformer 20 is low, and waste is caused; for the transformer system 10, the output working capacity of the transformer system 10 can be reduced by reducing the parallel number of the transformers 20 in the initial stage of the project to be adapted to the required capacity of smaller power equipment in the initial stage of the project, and when the power equipment is increased in the later stage of the project, the output working capacity of the transformer system 10 can be increased by increasing the parallel number of the transformers 20 to meet the increased required capacity of the power equipment, so that the transformer system 10 can change the capacity at any time by reducing or increasing the parallel number of the transformers 20 in the transformer system 10 to adapt to the requirements of various power grid operation conditions, the utilization rate and the electric energy utilization rate of each transformer 20 can be improved, and the transformer system is energy-saving and environment-friendly;
(3) under the condition of limited transportation conditions, the transformer system 10 can transport the single transformer 20 to the operation site, and then electrically connect the primary windings of the transformers 20 in parallel with each other to the first wiring assembly 100, and electrically connect the secondary windings of the transformers 20 in parallel with each other to the second wiring assembly 200 to complete the assembly of the transformer system 10, and because the assembly of the transformer system 10 is completed by simply electrically connecting the primary windings of the transformers 20 and the first wiring assembly 100, the secondary windings of the transformers 20 and the second wiring assembly 200, the performance of the transformers 20 is not affected during the electrical connection process, i.e. the loss, magnetic leakage and other adverse effects of the transformers 20 do not occur, so compared with the conventional transformer 20, the transformer system 10 can effectively reduce the transportation difficulty of the transformers 20, the method can adapt to transportation environments with more limitation, such as high-rise and super high-rise buildings, cannot damage the performance of the transformer 20, and reduces the probability that the normal operation of a power grid is influenced by transportation faults of the transformer 20; further, the transformer system 10 may also be integrally transported after assembling a plurality of transformers 20;
(4) because the transformers 20 are electrically connected in parallel, the transformers 20 can be operated independently without mutual influence, that is, when some transformers 20 in the transformer system 10 are damaged, the rest transformers 20 can still keep normal operation, thereby ensuring the continuity and reliability of power supply of a power grid and greatly reducing the probability of economic loss caused by the failure of the transformers 20.
Optionally, all transformers 20 in the transformer system 10 may be selected from various existing transformers, that is, the core and winding structures of all transformers 20 in the transformer system 10 are the same as those of the conventional transformer 20, so that the difficulty in producing and installing the transformer system 10 is not increased.
Alternatively, all transformers 20 in the transformer system 10 may be transformers of the same winding connection group and the same structure.
Alternatively, all transformers 20 in the transformer system 10 may be identical transformers or may be mutually different transformers.
In some embodiments, referring to fig. 1 to 2, all the transformers 20 are arranged and connected along a height direction (e.g., H direction shown in fig. 1 to 4) of the transformer system 10, and the transformer system 10 further includes at least one connecting member (not shown), and two adjacent transformers 20 are connected to each other through the at least one connecting member. Compared with the transformer product with the same capacity, all the transformers 20 are arranged and connected along the height direction of the transformer system 10, so that the occupied area of the transformer system 10 is smaller; the connector is used to connect two adjacent transformers 20 firmly. The connecting piece can be various existing connecting pieces, such as bolts.
In some embodiments, referring to fig. 1 to fig. 2, the first wiring assembly 100 includes first wiring members 110 having the same number of phases as the primary windings of the transformers 20, and one and the same primary windings of the transformers 20 are electrically connected to the same first wiring member 110 in parallel, so that the primary windings of the transformers 20 in the transformer system 10 are electrically connected in parallel.
Optionally, referring to fig. 1 to 2, one end of the first wiring member 110 is provided with a first bus connection port 111, the first bus connection port 111 is used for electrically connecting with an external device, and the other end of the first wiring member 110 is used for electrically connecting with one of the primary windings of the transformers 20 and the same phase. In this way, the current in the primary windings of the transformers 20 is collected at the first bus terminal 111, and then transmitted to the external device through the first bus terminal 111.
In some embodiments, referring to fig. 1 to fig. 2, the second wiring assembly 200 includes second wiring members 210 having the same number of phases as the number of secondary windings of the transformers 20, and one and the same secondary windings of the transformers 20 are electrically connected to the same second wiring member 210 in parallel, so that the secondary windings of the transformers 20 in the transformer system 10 are electrically connected in parallel.
Optionally, referring to fig. 1 to 2, one end of the second wiring member 210 is provided with a second common wiring port 211, the second common wiring port 211 is used for electrically connecting with an external device, and the other end of the second wiring member 210 is used for electrically connecting with one of the secondary windings of each transformer 20 and the same phase. In this way, the currents in the secondary windings of the transformers 20 are collected at the second bus connection port 211 and then transmitted to the external device through the second bus connection port 211.
Alternatively, the first and second wire members 110 and 210 may be any one of the conventional conductive members. Preferably, the first and second wire connecting pieces 110 and 210 are each a conductive copper bar.
It should be noted that, the primary winding of the transformer 20 and the secondary winding of the transformer 20 may adopt various conventional wiring methods, the primary winding of the transformer 20 may be a low-voltage winding or a high-voltage winding, and correspondingly, the secondary winding of the transformer 20 is a high-voltage winding or a low-voltage winding, the number of the first wiring members 110 corresponds to the number of phases of the primary winding of the transformer 20, and the number of the second wiring members 210 corresponds to the number of phases of the secondary winding of the transformer 20.
In some embodiments, referring to fig. 1 to 4, the primary winding of the transformer 20 is connected in a Y-connection manner or a delta-connection manner, the secondary winding of the transformer 20 is connected in a Y-connection manner, the primary winding of the transformer 20 is a high-voltage winding and has a phase a, a phase B and a phase C, the first connection assembly 100 includes three first connection members 110, and one of the phase a, the phase B and the phase C of the primary winding of each transformer 20 is electrically connected to the same first connection member 110 in parallel;
the secondary winding of the transformer 20 is a low voltage winding and has a-phase, b-phase, c-phase and 0-phase, the second wiring assembly 200 includes four second wiring members 210, and one of the a-phase, b-phase, c-phase or 0-phase of the secondary winding of each transformer 20 is electrically connected to the same second wiring member 210 in parallel. In this way, when the primary winding of the transformer 20 adopts the Y-connection method or the delta-connection method, and the secondary winding of the transformer 20 adopts the Y-connection method, the transformers 20 are electrically connected in parallel with each other.
Preferably, referring to fig. 1 to 4, in some embodiments, the transformer system 10 is provided with two transformers 20, the two transformers 20 are arranged and connected along a height direction (e.g., an H direction shown in fig. 1 to 4) of the transformer system 10, the two transformers 20 are named as an upper transformer and a lower transformer respectively, a distance between the upper transformer and a ground is greater than a distance between the lower transformer and the ground, a primary winding of each transformer 20 is provided as a high-voltage winding and a Y-connection method is adopted, and a secondary winding of each transformer 20 is provided as a low-voltage winding and a Y-connection method is adopted;
the high-voltage windings of the transformers 20 each include an a-phase coil, a B-phase coil, and a C-phase coil, each of which is provided with a head terminal (not shown) and a tail terminal (not shown), and the connection principle diagram of the parallel connection of the high-voltage windings of the two transformers 20 is shown in fig. 6, in which the head terminals of the a-phase coil, the B-phase coil, and the C-phase coil of the upper transformer are respectively represented by X1, Y1, and Z1, the tail terminals of the a-phase coil, the B-phase coil, and the C-phase coil of the upper transformer are respectively represented by a1, B1, and C1, the head terminals of the a-phase coil, the B-phase coil, and the C-phase coil of the lower transformer are respectively represented by X2, Y2, and Z2, and the tail terminals of the a-phase coil, the B-phase coil, and the C-phase coil of the lower transformer are respectively represented by X2, Y2, Z2, and the tail terminals of the a-phase coil, the B-phase coil, the tail terminals of the a-phase coil, the B coil, and the tail terminals of the lower transformer, The tail terminals of the C-phase coils are respectively denoted by a2, B2, and C2, and the tail terminal of the a-phase coil, the tail terminal of the B-phase coil, and the tail terminal of the C-phase coil of each transformer 20 are provided with main leads 203;
the first wiring assembly 100 includes three first wiring members 110, the three first wiring members 110 are respectively an a-phase first wiring member 1101, a B-phase first wiring member 1102 and a C-phase first wiring member 1103, the main leads 203 of the a-phase coils of the transformers 20 are electrically connected to the a-phase first wiring member 1101 in parallel, the main leads 203 of the B-phase coils of the transformers 20 are electrically connected to the B-phase first wiring member 1102 in parallel, and the main leads 203 of the C-phase coils of the transformers 20 are electrically connected to the C-phase first wiring member 1103 in parallel, so that the high-voltage windings of the upper transformers and the high-voltage windings of the lower transformers are electrically connected to each other in parallel;
the first bus connection port 111 of the a-phase first connection piece 1101, the first bus connection port 111 of the B-phase first connection piece 1102 and the first bus connection port 111 of the C-phase first connection piece 1103 are respectively used for electrically connecting with each corresponding external device;
the low-voltage windings of the transformers 20 each include an a-phase coil, a b-phase coil, and a c-phase coil, each of the a-phase coil, the b-phase coil, and the c-phase coil is provided with a leading tab 201 and a trailing tab 202, and a wiring schematic diagram of parallel connection of the low-voltage windings of the two transformers 20 is shown in fig. 5, in which the leading tab 201 of the a-phase coil, the leading tab 201 of the b-phase coil, and the leading tab 201 of the c-phase coil of the upper transformer are respectively represented by x1, y1, and z1, the trailing tab 202 of the a-phase coil, the trailing tab 202 of the b-phase coil, and the trailing tab 202 of the c-phase coil of the upper transformer are respectively represented by a1, b1, and c1, the leading tab 201 of the a-phase coil, the leading tab 201 of the b-phase coil, and the leading tab 201 of the c-phase coil of the lower transformer are respectively represented by x2, y2, z2, and the trailing tab 202 of the a-phase coil of the b-phase coil of the lower transformer 20, and the trailing tab 202 of the b-phase coil of the lower transformer 20, The tail pieces 202 of the c-phase coil are denoted by a2, b2, c2, respectively;
the second wire connecting assembly 200 includes four second wire connecting members 210, which are designated as a-phase second wire connecting member 2101, b-phase second wire connecting member 2102, c-phase second wire connecting member 2103 and 0-phase second wire connecting member 2104, respectively, the tail tabs 202 of the a-phase coils of each transformer 20 are electrically connected to the a-phase second wire connecting member 2101 in parallel with each other, the tail tabs 202 of the b-phase coils of each transformer 20 are electrically connected to the b-phase second wire connecting member 2102 in parallel with each other, the tail tabs 202 of the c-phase coils of each transformer 20 are electrically connected to the c-phase second wire connecting member 2103 in parallel with each other, meanwhile, the head tabs 201 of the a-phase coils of each transformer 20 are electrically connected to the 0-phase second wire connecting member 2104 in parallel with each other, the head tabs 201 of the b-phase coils of each transformer 20 are electrically connected to the 0-phase second wire connecting member 2104 in parallel with each other, thus, the low-voltage winding of the upper transformer and the low-voltage winding of the lower transformer are electrically connected in parallel;
the second bus port 211 of the a-phase second wire connection 2101, the second bus port 211 of the b-phase second wire connection 2102, the second bus port 211 of the c-phase second wire connection 2103, and the second bus port 211 of the 0-phase second wire connection 2104 are respectively used to electrically connect with each corresponding external device.
In some embodiments, the primary winding of the transformer 20 and the secondary winding of the transformer 20 are connected in a delta connection method, the primary winding of the transformer 20 is a high-voltage winding and has a phase a, a phase B, and a phase C, the first connection assembly 100 includes three first connection members 110, and one of the phase a, the phase B, or the phase C of the primary winding of each transformer 20 is electrically connected to the same first connection member 110 in parallel;
the secondary winding of the transformer 20 is a low voltage winding and has a-phase, b-phase and c-phase, the second wiring assembly 200 includes three second wiring members 210, and one of the a-phase, b-phase and c-phase of the secondary winding of each transformer 20 is electrically connected to the same second wiring member 210 in parallel. In this way, it is possible to realize that the transformers 20 are electrically connected in parallel with each other when the primary winding of the transformer 20 and the secondary winding of the transformer 20 are both connected in a delta connection method.
In some embodiments, referring to fig. 1 to 4, the transformer 20 further includes a core assembly 204, the core assembly 204 is formed by splicing three frame-shaped cores 2040, the circumferential side portions of two adjacent frame-shaped cores 2040 are spliced to form a core column (not shown), and the primary winding of the transformer 20 and the in-phase winding of the secondary winding of the transformer 20 are simultaneously wound on one core column.
Alternatively, the winding form of the primary winding of the transformer 20 and the coil of the secondary winding of the transformer 20 may be various winding forms that are already available.
Preferably, the coil of one phase of the secondary winding of the transformer 20 is wound around one core leg, after the winding is completed, an insulating cylinder (not shown) is sleeved on the circumferential outer side wall of the coil of the secondary winding of the transformer 20, and then the coil of the primary winding of the transformer 20, which is in the same phase as the coil of the secondary winding of the transformer 20, is wound around the circumferential outer side wall of the insulating cylinder, so that the primary winding of the transformer 20 and the in-phase winding of the secondary winding of the transformer 20 are simultaneously wound around one core leg.
In some embodiments, referring to fig. 1 to 4, the transformer 20 further includes a clip assembly 205, the clip assembly 205 includes an upper clip 2051 and a lower clip 2052, the upper clip 2051 forms an upper mounting space (not shown), the lower clip 2052 forms a lower mounting space (not shown), one end of the core assembly 204 extends into the upper mounting space and the other end of the core assembly 204 extends into the lower mounting space so that the clip assembly 205 fixes the core assembly 204.
Specifically, referring to fig. 1 to 4, the shape and size of the upper installation space are respectively adapted to the shape and size of the end of the core assembly 204 extending into the upper installation space, and the shape and size of the lower installation space are respectively adapted to the shape and size of the end of the core assembly 204 extending into the lower installation space, so that the clip assembly 205 stably fixes the core assembly 204.
In some embodiments, referring to fig. 1 to 4, each of the upper clamping member 2051 and the lower clamping member 2052 is a triangular frame, and the sharp corners of the triangular frame are chamfered, so that a hexagonal upper mounting space and a hexagonal lower mounting space are formed to respectively match the structure of one end of the core assembly 204 extending into the upper mounting space and one end of the core assembly extending into the lower mounting space.
In some embodiments, all transformers 20 are arranged and connected along the height direction of the transformer system 10, the connecting members are bolts, one end of each bolt is connected with the lower clamping piece 2052 of one transformer 20, and the other end of each bolt is connected with the upper clamping piece 2051 of the transformer 20 adjacent to the connected lower clamping piece 2052 of the bolt to realize the connection between two adjacent transformers 20.
In some embodiments, referring to fig. 1-4, the transformer 20 further includes a base connected to a side of the lower clip 2052 remote from the core assembly 204. The base may be used to support the transformer 20 such that the transformer 20 is stably placed on the work platform.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "communicating," "fixed," and the like are to be construed broadly, e.g., as meaning in fixed communication, in removable communication, or as an integral part; either mechanically or electrically; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A transformer system, comprising:
at least two transformers;
a first wiring member;
and the primary windings of the transformers are mutually connected in parallel and electrically connected with the first wiring assembly, and the secondary windings of the transformers are mutually connected in parallel and electrically connected with the second wiring assembly, so that the transformers are mutually connected in parallel and electrically connected.
2. The transformer system of claim 1, wherein the first wiring assembly includes first wiring members equal in number to the number of phases of the primary windings of the transformers, one and the same of the primary windings of each of the transformers being electrically connected in parallel with each other to the same first wiring member.
3. The transformer system of claim 2, wherein the second terminal assembly includes a number of second terminal members equal to the number of phases of the secondary windings of the transformers, one and the same of the secondary windings of each of the transformers being electrically connected in parallel with each other to the same second terminal member.
4. The transformer system according to claim 3, wherein one end of the first wiring piece is provided with a first bus wiring port for electrical connection with an external device, and the other end of the first wiring piece is for electrical connection with one and the same phase of the primary winding of each transformer; and/or
One end of the second wiring piece is provided with a second general wiring port, the second general wiring port is used for being electrically connected with external equipment, and the other end of the second wiring piece is used for being electrically connected with one of the secondary windings of the transformers and the same phase.
5. The transformer system of claim 3, wherein the primary winding of the transformer is Y-connected or delta-connected, the secondary winding of the transformer is Y-connected, the primary winding of the transformer is a high voltage winding and has an A-phase, a B-phase and a C-phase, the first connection assembly comprises three of the first connection members, and one of the A-phase, the B-phase or the C-phase of the primary winding of each of the transformers is electrically connected to the same first connection member in parallel;
the secondary winding of the transformer is a low-voltage winding and is provided with an a phase, a b phase, a c phase and a 0 phase, the second wiring assembly comprises four second wiring pieces, and one of the a phase, the b phase, the c phase or the 0 phase of the secondary winding of each transformer is electrically connected with the same second wiring piece in parallel.
6. The transformer system according to claim 3, wherein the primary winding of the transformer and the secondary winding of the transformer are connected in delta connection, the primary winding of the transformer is a high voltage winding and has a-phase, B-phase and C-phase, the first connection assembly comprises three first connection members, and one of the a-phase, B-phase or C-phase of the primary winding of each transformer is electrically connected to the same first connection member in parallel;
the secondary winding of the transformer is a low-voltage winding and is provided with an a phase, a b phase and a c phase, the second wiring assembly comprises three second wiring pieces, and one of the a phase, the b phase or the c phase of the secondary winding of each transformer is electrically connected with the same second wiring piece in parallel.
7. The transformer system according to claim 1, wherein the transformer further comprises an iron core assembly, the iron core assembly is formed by splicing three frame-shaped iron cores, the circumferential side portions of two adjacent frame-shaped iron cores are spliced to form an iron core column, and the primary winding of the transformer and the in-phase winding of the secondary winding of the transformer are simultaneously wound on one iron core column.
8. The transformer system of claim 7, wherein the transformer further comprises a clip assembly comprising an upper clip and a lower clip, the upper clip being formed with an upper mounting space, the lower clip being formed with a lower mounting space, one end of the core assembly extending into the upper mounting space and the other end of the core assembly extending into the lower mounting space such that the clip assembly secures the core assembly.
9. The transformer system of claim 8, further comprising a base connected to a side of the lower clip distal from the core assembly.
10. The transformer system according to any of claims 1 to 9, wherein all of the transformers are arranged and connected in a height direction of the transformer system, and the transformer system further comprises at least one connecting member, and adjacent two of the transformers are connected to each other by at least one of the connecting members.
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| CN202111654653.8A CN114300245B (en) | 2021-12-30 | 2021-12-30 | Transformer system |
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| CN202111654653.8A CN114300245B (en) | 2021-12-30 | 2021-12-30 | Transformer system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201725672U (en) * | 2010-03-03 | 2011-01-26 | 四川蜀能电器有限责任公司 | Trifid rectifier transformer |
| CN102891001A (en) * | 2012-09-11 | 2013-01-23 | 沈阳昊诚电气股份有限公司 | Three-phase transformer system and power grid with same |
| CN203644535U (en) * | 2013-11-28 | 2014-06-11 | 哈尔滨电工仪表研究所 | High-current transformer for high-capacity experiment |
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2021
- 2021-12-30 CN CN202111654653.8A patent/CN114300245B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201725672U (en) * | 2010-03-03 | 2011-01-26 | 四川蜀能电器有限责任公司 | Trifid rectifier transformer |
| CN102891001A (en) * | 2012-09-11 | 2013-01-23 | 沈阳昊诚电气股份有限公司 | Three-phase transformer system and power grid with same |
| CN203644535U (en) * | 2013-11-28 | 2014-06-11 | 哈尔滨电工仪表研究所 | High-current transformer for high-capacity experiment |
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