CN219349957U - Tapping lead structure of 110kV three-phase combined dry-type transformer and transformer - Google Patents
Tapping lead structure of 110kV three-phase combined dry-type transformer and transformer Download PDFInfo
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- CN219349957U CN219349957U CN202320815937.9U CN202320815937U CN219349957U CN 219349957 U CN219349957 U CN 219349957U CN 202320815937 U CN202320815937 U CN 202320815937U CN 219349957 U CN219349957 U CN 219349957U
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Abstract
The utility model provides a tapping lead structure of a 110kV three-phase combined dry-type transformer and the transformer, wherein the tapping lead structure comprises: the first copper bar rack, the second copper bar rack and the third copper bar rack; the second copper bar frame is positioned between the first copper bar frame and the third copper bar frame; the distance between the first connecting part of the first copper bar and the second copper bar frame is larger than the distance between the second connecting part of the second copper bar and the second copper bar frame; the two connecting parts are electrically connected through the first switching copper bar; the third copper bar is provided with a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are arranged at intervals, and the two connecting parts are electrically connected through the second switching copper bar; the distance between the fifth connecting part of the fourth copper bar and the second copper bar frame is larger than the distance between the sixth connecting part of the fifth copper bar and the second copper bar frame; the fifth connecting part and the sixth connecting part are electrically connected through a third switching copper bar. The utility model can reduce the length of the lead and ensure the long-term stable operation of the transformer.
Description
Technical Field
The embodiment of the utility model relates to the technical field of transformers, in particular to a tapping lead structure of a 110kV three-phase combined dry-type transformer and the transformer.
Background
Compared with other three-phase transformers, the 110kV three-phase combined dry-type transformer has the problem that the pitch between the phases A, B and C is too large, and is often larger than the pitch between the phases A, B and C of the tap changer (the pitch between the phases of the tap changer is often not more than 2200 mm).
Thus, when tapping the lead, it is difficult to align the three phases of the tap changer with respect to A, B and C three phases of the 110kV three-phase combined dry transformer. At present, the wiring is often realized by lengthening the lead wire.
The direct increase of the lead length can lead the 110kV three-phase combined dry-type transformer and the tapping switch to bear great tensile force, and the risk of the tapping terminal on the transformer being pulled out is increased; and, directly increasing the lead length increases the probability of adjacent lead cross contacts, increasing the risk of short circuits due to current breakdown between tap leads.
Disclosure of Invention
The embodiment of the utility model provides a tapping lead structure of a 110kV three-phase combined dry-type transformer and a transformer, which are used for solving the problem that the existing direct increase of the lead length can lead the 110kV three-phase combined dry-type transformer and the tapping switch to bear great tensile force, so that the risk of the tapping terminal on the transformer being pulled out is increased; and, directly increasing the lead length increases the probability of adjacent lead cross contact, increases the risk of short circuit due to current breakdown between tap leads.
In order to solve the technical problems, the utility model is realized as follows:
in a first aspect, an embodiment of the present utility model provides a tapping lead structure of a 110kV three-phase combined dry-type transformer, including:
the first copper bar rack, the second copper bar rack and the third copper bar rack;
the second copper bar frame is positioned between the first copper bar frame and the third copper bar frame;
the first copper bar frame comprises a first copper bar, a second copper bar and a first switching copper bar, wherein the first copper bar is provided with a first connecting part, the second copper bar is provided with a second connecting part, and the distance between the first connecting part and the second copper bar frame is larger than the distance between the second connecting part and the second copper bar frame; the first connecting part and the second connecting part are electrically connected through the first switching copper bar;
the second copper bar frame comprises a third copper bar and a second switching copper bar, the third copper bar is provided with a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are arranged at intervals, and the third connecting part and the fourth connecting part are electrically connected through the second switching copper bar;
the third copper bar rack comprises a fourth copper bar, a fifth copper bar and a third switching copper bar, the fourth copper bar is provided with a fifth connecting part, the fifth copper bar is provided with a sixth connecting part, and the interval between the fifth connecting part and the second copper bar rack is larger than the interval between the sixth connecting part and the second copper bar rack; the fifth connecting part and the sixth connecting part are electrically connected through the third switching copper bar.
Alternatively, the process may be carried out in a single-stage,
the first copper bar, the second copper bar, the third copper bar, the fourth copper bar and the fifth copper bar are parallel to each other.
Alternatively, the process may be carried out in a single-stage,
the first connecting part comprises a plurality of first connecting terminals, the second connecting part comprises a plurality of second connecting terminals, and the first connecting terminals and the second connecting terminals are in one-to-one correspondence; each first connecting terminal is electrically connected with a second connecting terminal corresponding to the first connecting terminal through a first transfer copper bar;
the third connecting part comprises a plurality of third connecting terminals, the fourth connecting part comprises a plurality of fourth connecting terminals, and the third connecting terminals are in one-to-one correspondence with the fourth connecting terminals; each third connecting terminal is electrically connected with a fourth connecting terminal corresponding to the third connecting terminal through a second transfer copper bar;
the fifth connecting part comprises a plurality of fifth connecting terminals, the sixth connecting part comprises a plurality of sixth connecting terminals, and the fifth connecting terminals are in one-to-one correspondence with the sixth connecting terminals; each fifth connecting terminal is electrically connected with a sixth connecting terminal corresponding to the fifth connecting terminal through a third switching copper bar.
Alternatively, the process may be carried out in a single-stage,
the first transfer copper bar is a zigzag plate-shaped strip copper bar, one end part of the first transfer copper bar is electrically connected with the first connecting terminal, and the other end part of the first transfer copper bar is electrically connected with the second connecting terminal corresponding to the first connecting terminal;
and/or
The second transfer copper bar is a U-shaped plate strip copper bar, one end part of the second transfer copper bar is electrically connected with the third connecting terminal, and the other end part of the second transfer copper bar is electrically connected with the fourth connecting terminal corresponding to the third connecting terminal;
and/or
The third transfer copper bar is a zigzag plate-shaped strip copper bar, one end part of the third transfer copper bar is electrically connected with the fifth connecting terminal, and the other end part of the third transfer copper bar is electrically connected with the sixth connecting terminal corresponding to the fifth connecting terminal.
Alternatively, the process may be carried out in a single-stage,
the first copper bar includes: the first copper sub-bars are arranged at intervals, and each first copper sub-bar is provided with a first connecting terminal; the second copper bar includes: the plurality of second copper sub-bars are arranged at intervals, and each second copper sub-bar is provided with a second connecting terminal;
the third copper bar includes: a plurality of third sub copper bars arranged at intervals, and a plurality of fourth sub copper bars arranged at intervals; each third sub-copper bar is provided with a third connecting terminal; each fourth sub copper bar is provided with a fourth connecting terminal;
the fourth copper bar includes: a plurality of fifth copper sub-bars arranged at intervals, wherein each fifth copper sub-bar is provided with a fifth connecting terminal; the fifth copper bar includes: and the plurality of sixth copper sub-bars are arranged at intervals, and each sixth copper sub-bar is provided with a sixth connecting terminal.
Alternatively, the process may be carried out in a single-stage,
the first copper sub-bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the first copper sub-bar, and the first copper sub-bar is connected with the connecting holes in a matched manner through fasteners to form the first connecting terminal;
the second copper sub-bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the second copper sub-bar, and the second copper sub-bar is connected with the connecting holes in a matched manner through fasteners to form a second connecting terminal;
the third copper bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the third copper bar, and the third copper bar is matched and connected with the connecting holes through fasteners to form a third connecting terminal;
the fourth copper bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the copper bar, and the wiring holes are matched and connected with the fastening pieces to form a fourth connecting terminal;
the fifth copper sub-bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the fifth copper sub-bar, and the fifth copper sub-bar is connected with the wiring holes in a matched manner through fasteners to form a fifth connecting terminal;
the sixth copper bar is provided with a plurality of wiring holes which are distributed at intervals along the length direction of the copper bar, and the wiring holes are matched and connected with the fastening pieces to form the sixth connecting terminal.
Alternatively, the process may be carried out in a single-stage,
the fastener comprises a bolt, and shielding caps are arranged at two ends of the bolt.
Alternatively, the process may be carried out in a single-stage,
an insulator is arranged between any two adjacent first sub copper bars;
an insulator is arranged between any two adjacent second copper bars;
an insulator is arranged between any two adjacent third sub copper bars;
an insulator is arranged between any two adjacent fourth sub copper bars;
an insulator is arranged between any two adjacent fifth copper bars;
an insulator is arranged between any two adjacent sixth copper bars.
Alternatively, the process may be carried out in a single-stage,
the first copper bar further includes: a first drawing frame; all the first copper sub-bars are arranged on the first drawing frame at intervals; the second copper bar includes: a second drawing frame; all the second copper sub-bars are arranged on the second drawing frame at intervals;
the third copper bar further includes: a third drawing frame; all the third copper sub-bars are arranged on the third drawing frame at intervals; all the fourth sub copper bars are arranged on the third drawing frame at intervals;
the fourth copper bar further includes: a fourth drawing frame; all the fourth sub copper bars are arranged on the fourth drawing frame at intervals; the fifth copper bar includes: a fifth drawing frame; all the fifth copper sub-bars are arranged on the fifth drawing frame at intervals;
the first drawing frame, the second drawing frame, the third drawing frame, the fourth drawing frame and the fifth drawing frame are all made of H-level resin fiber drawing plates, and all the drawing plates are connected through nylon bolts.
In a second aspect, an embodiment of the present utility model provides a 110kV three-phase combined dry type transformer, including: the tap lead arrangement of any one of the first aspects.
In the embodiment of the utility model, the tapping lead structure comprises a first copper bar frame, a second copper bar frame and a third copper bar frame; the second copper bar frame is positioned between the first copper bar frame and the third copper bar frame; the first copper bar frame comprises a first copper bar, a second copper bar and a first transfer copper bar, the first copper bar is provided with a first connecting part, the second copper bar is provided with a second connecting part, and the distance between the first connecting part and the second copper bar frame is larger than the distance between the second connecting part and the second copper bar frame; the first connecting part and the second connecting part are electrically connected through the first switching copper bar; the second copper bar frame comprises a third copper bar and a second switching copper bar, the third copper bar is provided with a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are arranged at intervals, and the third connecting part and the fourth connecting part are electrically connected through the second switching copper bar; the third copper bar rack comprises a fourth copper bar, a fifth copper bar and a third switching copper bar, the fourth copper bar is provided with a fifth connecting part, the fifth copper bar is provided with a sixth connecting part, and the interval between the fifth connecting part and the second copper bar rack is larger than the interval between the sixth connecting part and the second copper bar rack; the fifth connecting part and the sixth connecting part are electrically connected through the third switching copper bar, and the length of a required lead can be shortened by adopting the tapping lead structure of the embodiment of the utility model when the interval between the 110kV three-phase combined dry-type transformer and the tapping switch is unequal, so that the tensile force of a tapping terminal on the transformer is reduced, the risk of damage caused by the tensile force of the tapping terminal is reduced, and the long-term stable operation of the transformer is ensured; moreover, by adopting the tapping lead structure provided by the embodiment of the utility model, the problem of increased probability of lead cross contact caused by direct lead between the tapping terminal and the tapping switch of the 110kV three-phase combined dry-type transformer by adopting a long-length lead can be effectively avoided, the short circuit risk caused by the lead cross contact is reduced, and the long-term stable operation of the transformer is ensured.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic top view of a tapping lead structure of a 110kV three-phase combined dry-type transformer according to an embodiment of the present utility model;
fig. 2 is a schematic front view of a tapping lead structure of a 110kV three-phase combined dry-type transformer according to an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure of a zigzag strip copper bar;
fig. 4 is a schematic structural view of a U-shaped plate strip copper bar;
FIG. 5 is an enlarged schematic view of a portion corresponding to the area A in FIG. 2;
wherein:
100. a transformer A phase; 200. a transformer B phase; 300. a transformer C phase;
1. a first copper bar rack; 11. a first copper bar; 11a, a first sub copper bar; 111. a first connection portion; 114. a first drawing frame; 12. a second copper bar; 12a, a second sub copper bar; 121. a second connecting portion; 124. a first drawing frame; 13. the first switching copper bar;
2. a second copper bar rack; 21. a third copper bar; 21a, a third sub copper bar; 21b, a fourth sub copper bar; 211. a third connecting portion; 212. a fourth connecting portion; 214. a third drawing frame; 22. the second switching copper bar;
3. a third copper bar rack; 31. a fourth copper bar; 31a, a fifth sub copper bar; 311. a fifth connecting portion; 314. a fourth drawing frame; 32. a fifth copper bar; 32a, a sixth copper bar; 321. a sixth connecting portion; 324. a fifth drawing frame; 33. a third switching copper bar;
4. a wiring hole;
5. an insulator.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment of the utility model provides a tapping lead structure of a 110kV three-phase combined dry-type transformer, which is shown in fig. 1, fig. 1 is a schematic top view of the tapping lead structure of the 110kV three-phase combined dry-type transformer, and the tapping lead structure comprises:
the first copper bar rack 1, the second copper bar rack 2 and the third copper bar rack 3;
the second copper bar frame 2 is positioned between the first copper bar frame 1 and the third copper bar frame 3;
the first copper bar rack 1 comprises a first copper bar 11, a second copper bar 12 and a first transfer copper bar 13, wherein the first copper bar 11 is provided with a first connecting part 111, the second copper bar 12 is provided with a second connecting part 121, and the distance between the first connecting part 111 and the second copper bar rack 2 is larger than the distance between the second connecting part 121 and the second copper bar rack 2; the first connection portion 111 and the second connection portion 121 are electrically connected through the first transfer copper bar 13;
the wiring principle of the first copper bar 1 is described below with reference to fig. 1:
referring specifically to fig. 1, fig. 1 illustrates a connection of a first copper bar rack 1, wherein arabic numerals on a first connection portion 111 illustrate connection terminals with corresponding numbers, and connection terminals 1', 7', and 6 of the first connection portion 111 are first connection terminals; the arabic numerals on the second connection portion 121 indicate the connection terminals with corresponding numbers, and the connection terminals 1, 7, and 6' of the second connection portion 121 are the second connection terminals. The first copper bar 1 is used for tapping the lead wire of the a phase 100 of the 110kV three-phase combined dry-type transformer, and the direct lead wires of the 1, 7 and 6 tap terminals of the a phase 100 of the transformer are easy to cause line entanglement to increase the short circuit risk. With the tapping lead result of the embodiment of the present utility model, the tapping terminals 1 and 7 of the transformer a phase 100 are firstly tapped to the first connection terminals 1 'and 7' of the first connection portion 111, respectively, and the first connection terminals 1 'and 7' are correspondingly transferred to the second connection terminals 1 and 7 of the second connection portion 121 by using the first transfer copper bar 13, and then the tapping switch is tapped from the second connection terminals 1 and 7. Correspondingly, the No. 6 tapping terminal of the transformer B phase 200 is firstly led to the No. 6 'second connection terminal of the second connection portion 121, and the No. 6' second connection terminal is electrically connected with the No. 6 first connection terminal of the first connection portion 111 by adopting the first switching copper bar 13, and then led to the tapping switch from the No. 6 first connection terminal. The risk of short circuit of direct leads of the tapping terminals 1, 7 and 6 of the phase A of the transformer is avoided, and wiring safety is guaranteed.
The second copper bar frame 2 comprises a third copper bar 21 and a second switching copper bar 22, the third copper bar 21 is provided with a third connecting part 211 and a fourth connecting part 212, the third connecting part 211 and the fourth connecting part 212 are arranged at intervals, and the third connecting part 211 and the fourth connecting part 212 are electrically connected through the second switching copper bar 22;
the wiring principle of the second copper bar frame 2 is described below with reference to fig. 1:
referring specifically to fig. 1, fig. 1 illustrates a connection of the second copper bar rack 2, where arabic numerals on the third connection portion 211 illustrate connection terminals with corresponding numbers, and connection terminals 1', 7', and 6 of the third connection portion 211 are third connection terminals; the arabic numerals on the fourth connection portion 212 indicate connection terminals with corresponding numbers, and the connection terminals 1, 7, and 6' of the fourth connection portion 212 are fourth connection terminals. The second copper bar 2 is used for tapping the lead wire of the B phase 200 of the 110kV three-phase combined dry transformer, and the direct lead wires of the 1, 7 and 6 tap terminals of the B phase 200 of the transformer are likely to cause line entanglement to increase the risk of short circuit. With the tapping lead result of the embodiment of the present utility model, the tapping terminals 1 and 7 of the transformer B phase 200 are firstly tapped to the first connection terminals 1 'and 7' of the third connection portion 211, respectively, and the third connection terminals 1 'and 7' are correspondingly transferred to the fourth connection terminals 1 and 7 of the fourth connection portion 212 by using the second transfer copper bar 22, and then the tapping switch is tapped from the fourth connection terminals 1 and 7. Correspondingly, the No. 6 tapping terminal of the transformer B phase 200 is firstly led to the No. 6 fourth connecting terminal of the fourth connecting portion 212, the No. 6 fourth connecting terminal is electrically connected with the No. 6 third connecting terminal of the third connecting portion 211 by adopting the second switching copper bar 22, and then led to the tapping switch from the No. 6 third connecting terminal. The risk of short circuit of direct leads of the tapping terminals 1, 7 and 6 of the phase B200 of the transformer is avoided, and wiring safety is guaranteed.
The third copper bar frame 3 comprises a fourth copper bar 31, a fifth copper bar 32 and a third switching copper bar 33, the fourth copper bar 31 is provided with a fifth connecting part 311, the fifth copper bar 32 is provided with a sixth connecting part 321, and the interval between the fifth connecting part 311 and the second copper bar frame 2 is larger than the interval between the sixth connecting part 321 and the second copper bar frame 2; the fifth connection portion 311 and the sixth connection portion 321 are electrically connected through the third transfer copper bar 33.
The third copper bar 3 is used for tapping the lead of the C phase 300 of the 110kV three-phase combined dry-type transformer, and the lead principle is the same as that of the first copper bar 1 to the a phase 100 of the transformer, and will not be described here again.
In some embodiments of the utility model, the wire used for the leads may alternatively be soft copper strands.
In some embodiments of the present utility model, optionally, in order to further ensure that the peripheral side portion of the soft copper stranded wire has an excellent insulation performance, and avoid an accident caused by current breakdown between the soft copper stranded wire and the soft copper stranded wire, the peripheral side portion of the soft copper stranded wire in some embodiments of the present utility model is sleeved with two layers of heat shrink tubes, that is, all soft copper stranded wires are first shrunk with one layer of 10kV heat shrink tube and then shrunk with one layer of 35kV heat shrink tube.
In the embodiment of the utility model, the tapping lead structure comprises a first copper bar frame 1, a second copper bar frame 2 and a third copper bar frame 3; the second copper bar frame 2 is positioned between the first copper bar frame 1 and the third copper bar frame 3; the first copper bar rack 1 comprises a first copper bar 11, a second copper bar 12 and a first transfer copper bar 13, wherein the first copper bar 11 is provided with a first connecting part 111, the second copper bar 12 is provided with a second connecting part 121, and the distance between the first connecting part 111 and the second copper bar rack 2 is larger than the distance between the second connecting part 121 and the second copper bar rack 2; the first connection portion 111 and the second connection portion 121 are electrically connected through the first transfer copper bar 13; the second copper bar frame 2 comprises a third copper bar 21 and a second switching copper bar 22, the third copper bar 21 is provided with a third connecting part 211 and a fourth connecting part 212, the third connecting part 211 and the fourth connecting part 212 are arranged at intervals, and the third connecting part 211 and the fourth connecting part 212 are electrically connected through the second switching copper bar 22; the third copper bar frame 3 comprises a fourth copper bar 31, a fifth copper bar 32 and a third switching copper bar 33, the fourth copper bar 31 is provided with a fifth connecting part 311, the fifth copper bar 32 is provided with a sixth connecting part 321, and the interval between the fifth connecting part 311 and the second copper bar frame 2 is larger than the interval between the sixth connecting part 321 and the second copper bar frame 2; the fifth connecting part 311 is electrically connected with the sixth connecting part 321 through the third switching copper bar 33, and when the intervals between the 10kV three-phase combined dry-type transformer and the tapping switch are unequal, the tapping lead structure can shorten the length of a required lead, reduce the tensile force of a tapping terminal on the transformer, reduce the risk of damage caused by the tensile force of the tapping terminal, and ensure the long-term stable operation of the transformer; moreover, by adopting the tapping lead structure provided by the embodiment of the utility model, the problem of increased probability of lead cross contact caused by direct lead between the tapping terminal and the tapping switch of the 110kV three-phase combined dry-type transformer by adopting a long-length lead can be effectively avoided, the short circuit risk caused by the lead cross contact is reduced, and the long-term stable operation of the transformer is ensured.
In some embodiments of the present utility model, optionally, referring to fig. 1, the first copper bar 11, the second copper bar 12, the third copper bar 21, the fourth copper bar 31 and the fifth copper bar 32 are parallel to each other.
The parallel arrangement realizes the regular arrangement of the copper bars, can effectively avoid the problem that the leads on irregular copper bars are easy to deviate, and reduces the risk of high lead entanglement caused by the easy deviation of the leads.
In some embodiments of the utility model, the method, optionally,
the first connection part 111 includes a plurality of first connection terminals, and the second connection part 121 includes a plurality of second connection terminals, the first connection terminals and the second connection terminals being in one-to-one correspondence; each first connecting terminal is electrically connected with a second connecting terminal corresponding to the first connecting terminal through a first switching copper bar 13;
the third connection part 211 includes a plurality of third connection terminals, and the fourth connection part 212 includes a plurality of fourth connection terminals, which are in one-to-one correspondence; each third connecting terminal is electrically connected with a fourth connecting terminal corresponding to the third connecting terminal through a second switching copper bar 22;
the fifth connection part 311 includes a plurality of fifth connection terminals, and the sixth connection part 321 includes a plurality of sixth connection terminals, which are in one-to-one correspondence with the sixth connection terminals; each fifth connection terminal is electrically connected with its own corresponding sixth connection terminal through a third transfer copper bar 33.
Referring to fig. 1 and 2, fig. 2 is a front view schematically illustrating a tapping lead structure of a 110kV three-phase combined dry-type transformer according to an embodiment of the present utility model, wherein arabic numerals on a first connection portion 111 schematically indicate connection terminals with corresponding numbers, and connection terminals 1', 7', and 6 of the first connection portion 111 are first connection terminals. The arabic numerals on the second connection portion 121 indicate the connection terminals with corresponding numbers, and the connection terminals 1, 7, and 6' of the second connection portion 121 are the second connection terminals. The first connection terminals 1', 7' and 6 'are electrically connected with the second connection terminals 1, 7 and 6' corresponding to the first connection terminals through a first transfer copper bar 13.
The Arabic numerals on the third connecting part 211 indicate corresponding numbered connecting terminals, and the connecting terminals 1', 7' and 6 of the third connecting part 211 are third connecting terminals; the Arabic numerals on the fourth connecting part 212 indicate the connecting terminals with corresponding numbers, and the connecting terminals 1, 7 and 6' of the fourth connecting part 212 are fourth connecting terminals; the third connection terminals 1', 7' and 6 'are electrically connected with the fourth connection terminals 1, 7 and 6' corresponding to the third connection terminals through a second transfer copper bar 22.
The Arabic numerals on the fifth connecting part 311 indicate corresponding numbered connecting terminals, and the connecting terminals 1', 7' and 6 of the fifth connecting part 311 are fifth connecting terminals; the arabic numerals on the sixth connection portion 321 indicate the connection terminals with corresponding numbers, and the connection terminals 1, 7, and 6' of the sixth connection portion 321 are the sixth connection terminals. The fifth connection terminals 1', 7' and 6 'are electrically connected with the sixth connection terminals 1, 7 and 6' corresponding to the fifth connection terminals through a third transfer copper bar 33.
In some embodiments of the present utility model, optionally, referring to fig. 3, fig. 3 is a schematic structural diagram of a zigzag-shaped strip copper bar, the first transfer copper bar 13 is a zigzag-shaped strip copper bar, one end portion of the first transfer copper bar 13 is electrically connected to the first connection terminal, and the other end portion is electrically connected to the second connection terminal corresponding to the first connection terminal;
and/or
Referring to fig. 4, fig. 4 is a schematic structural diagram of a U-shaped strip copper bar, the second transfer copper bar 22 is a U-shaped strip copper bar, one end of the second transfer copper bar 22 is electrically connected to the third connection terminal, and the other end is electrically connected to a fourth connection terminal corresponding to the third connection terminal;
and/or
Referring to fig. 3, the third transfer copper bar 33 is a zigzag-shaped plate-shaped copper bar, and one end of the third transfer copper bar 33 is electrically connected to the fifth connection terminal and the other end is electrically connected to the sixth connection terminal corresponding to the fifth connection terminal.
In some embodiments of the utility model, the method, optionally,
referring to fig. 2, the first copper bar 11 includes: the first copper sub-bars 11a are arranged at intervals, and each first copper sub-bar 11a is provided with a first connecting terminal; the second copper bar 12 includes: a plurality of second copper sub-bars 12a arranged at intervals, each second copper sub-bar 12a having a second connection terminal;
the third copper bar 21 includes: a plurality of third sub copper bars 21a arranged at intervals, and a plurality of fourth sub copper bars 21b arranged at intervals; each third sub-copper bar 21a has a third connection terminal; each fourth sub-copper bar 21b has a fourth connection terminal;
the fourth copper bar 31 includes: a plurality of fifth copper sub-bars 31a arranged at intervals, each fifth copper sub-bar 31a having a fifth connection terminal; the fifth copper bar 32 includes: the plurality of sixth copper sub-bars 32a are arranged at intervals, and each of the sixth copper sub-bars 32a has a sixth connection terminal.
In some embodiments of the present utility model, optionally, all of the first sub copper bar 11a, the second sub copper bar 12a, the third sub copper bar 21a, the fourth sub copper bar 21b, the fifth sub copper bar 31a and the sixth sub copper bar 32a are sleeved with 35kV heat shrink tubes, so as to ensure that the sub copper bars have excellent insulation performance, avoid current breakdown, and ensure safe and stable operation of the transformer.
In some embodiments of the utility model, the method, optionally,
referring to fig. 5, fig. 5 is a partially enlarged schematic view of a region a in fig. 2, wherein a first copper sub-bar 11a has a plurality of wiring holes 4 arranged at intervals along its length direction, and is connected to the wiring holes by fasteners (not shown) to form a first connection terminal;
the second copper sub-bar 12a is provided with a plurality of wiring holes 4 which are arranged at intervals along the length direction of the copper sub-bar, and the wiring holes are matched and connected with a fastener (not shown in the figure) to form a second connecting terminal;
the third copper sub-bar 21a is provided with a plurality of wiring holes 4 which are arranged at intervals along the length direction of the copper sub-bar, and the wiring holes are matched and connected with a fastener (not shown in the figure) to form a third connecting terminal;
the fourth sub copper bar 21b is provided with a plurality of wiring holes 4 which are arranged at intervals along the length direction of the copper bar, and the wiring holes are matched and connected with a fastener (not shown in the figure) to form a fourth connecting terminal;
the fifth sub copper bar 31a has a plurality of wiring holes 4 arranged at intervals along its length direction, and is connected with the connection holes by fasteners (not shown) to form a fifth connection terminal;
the sixth sub copper bar 32a has a plurality of wiring holes 4 arranged at intervals along its length direction, and is connected with the connection holes by fasteners (not shown) to constitute a sixth connection terminal.
In some embodiments of the utility model, optionally, the fastener (not shown) comprises a bolt having shielding caps at both ends. The shielding cap can be hemispherical or spherical, has an excellent electrode shape, can avoid the condition that the edges and corners at two ends of the bolt form tip discharge in the use process of the transformer, further avoid the condition that the tip discharge breaks down air to cause short circuit, ensure the wiring safety and ensure the long-term stable operation of the transformer.
In some embodiments of the utility model, optionally, as shown in figure 2,
an insulator 5 is arranged between any two adjacent first sub copper bars 11 a;
an insulator 5 is arranged between any two adjacent second copper sub-bars 12 a;
an insulator 5 is arranged between any two adjacent third copper sub-bars 21 a;
an insulator 5 is arranged between any two adjacent fourth sub copper bars 21b;
an insulator 5 is arranged between any two adjacent fifth copper sub-bars 31 a;
an insulator 5 is provided between any adjacent two sixth sub-copper bars 32 a.
In the embodiment of the utility model, the insulator 5 arranged between the copper bars can effectively prevent the current from breaking through the air between the copper bars, so that the safe and stable operation of the transformer is ensured.
In some embodiments of the present utility model, optionally, referring to fig. 2, the first copper bar 11 further includes: a first pull out shelf 114; all the first copper sub-bars 11a are arranged on the first drawing frame 114 at intervals; the second copper bar 12 includes: a second drawing frame 124; all the second copper sub-bars 12a are arranged on the second drawing frame 124 at intervals;
the third copper bar 21 further includes: a third drawing frame 214; all third sub copper bars 21a are arranged on the third drawing frame 214 at intervals; all the fourth sub copper bars 21b are arranged on the third drawing frame 214 at intervals;
the fourth copper bar 31 further includes: a fourth drawing frame 314; all the fourth sub copper bars 21b are arranged on the fourth drawing frame 314 at intervals; the fifth copper bar 32 includes: a fifth drawing frame 324; all the fifth copper sub-bars 31a are arranged on the fifth drawing frame 324 at intervals;
the first drawing frame 114, the second drawing frame 124, the third drawing frame 214, the fourth drawing frame 314 and the fifth drawing frame 324 are all made of H-level resin fiber drawing plates, and all drawing plates are connected through nylon bolts.
Class H resins, i.e., ethynyl terminated polyphenyl oligomers. Has excellent oxidation resistance and ablation resistance. The section bar made of the H-level resin fiber, namely the H-level resin fiber drawing plate. The H-level resin fiber drawing plate has excellent oxidation resistance and ablation resistance, and can ensure that a drawing frame can resist the oxidation or ablation of a natural environment or a transformer deployment site in the deployment process of the transformer, so that the drawing frame can be used for a long time, and the maintenance cost is reduced; and the lead frame is ensured to have excellent insulating property based on the H-level resin, so that the risk of leakage short circuit is reduced, and the long-term stable operation of the transformer is ensured.
The embodiment of the utility model also provides a 110kV three-phase combined dry-type transformer, which comprises: any of the tap lead arrangements of the embodiments of the utility model.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (10)
1. A 110kV three-phase combined dry-type transformer tapping lead structure, comprising:
the first copper bar rack, the second copper bar rack and the third copper bar rack;
the second copper bar frame is positioned between the first copper bar frame and the third copper bar frame;
the first copper bar frame comprises a first copper bar, a second copper bar and a first switching copper bar, wherein the first copper bar is provided with a first connecting part, the second copper bar is provided with a second connecting part, and the distance between the first connecting part and the second copper bar frame is larger than the distance between the second connecting part and the second copper bar frame; the first connecting part and the second connecting part are electrically connected through the first switching copper bar;
the second copper bar frame comprises a third copper bar and a second switching copper bar, the third copper bar is provided with a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are arranged at intervals, and the third connecting part and the fourth connecting part are electrically connected through the second switching copper bar;
the third copper bar rack comprises a fourth copper bar, a fifth copper bar and a third switching copper bar, the fourth copper bar is provided with a fifth connecting part, the fifth copper bar is provided with a sixth connecting part, and the interval between the fifth connecting part and the second copper bar rack is larger than the interval between the sixth connecting part and the second copper bar rack; the fifth connecting part and the sixth connecting part are electrically connected through the third switching copper bar.
2. The tap lead configuration of claim 1, wherein:
the first copper bar, the second copper bar, the third copper bar, the fourth copper bar and the fifth copper bar are parallel to each other.
3. The tap lead configuration of claim 1, wherein:
the first connecting part comprises a plurality of first connecting terminals, the second connecting part comprises a plurality of second connecting terminals, and the first connecting terminals and the second connecting terminals are in one-to-one correspondence; each first connecting terminal is electrically connected with a second connecting terminal corresponding to the first connecting terminal through a first transfer copper bar;
the third connecting part comprises a plurality of third connecting terminals, the fourth connecting part comprises a plurality of fourth connecting terminals, and the third connecting terminals are in one-to-one correspondence with the fourth connecting terminals; each third connecting terminal is electrically connected with a fourth connecting terminal corresponding to the third connecting terminal through a second transfer copper bar;
the fifth connecting part comprises a plurality of fifth connecting terminals, the sixth connecting part comprises a plurality of sixth connecting terminals, and the fifth connecting terminals are in one-to-one correspondence with the sixth connecting terminals; each fifth connecting terminal is electrically connected with a sixth connecting terminal corresponding to the fifth connecting terminal through a third switching copper bar.
4. A tap lead arrangement according to claim 3, wherein:
the first transfer copper bar is a zigzag plate-shaped strip copper bar, one end part of the first transfer copper bar is electrically connected with the first connecting terminal, and the other end part of the first transfer copper bar is electrically connected with the second connecting terminal corresponding to the first connecting terminal;
and/or
The second transfer copper bar is a U-shaped plate strip copper bar, one end part of the second transfer copper bar is electrically connected with the third connecting terminal, and the other end part of the second transfer copper bar is electrically connected with the fourth connecting terminal corresponding to the third connecting terminal;
and/or
The third transfer copper bar is a zigzag plate-shaped strip copper bar, one end part of the third transfer copper bar is electrically connected with the fifth connecting terminal, and the other end part of the third transfer copper bar is electrically connected with the sixth connecting terminal corresponding to the fifth connecting terminal.
5. A tap lead arrangement according to claim 3, wherein:
the first copper bar includes: the first copper sub-bars are arranged at intervals, and each first copper sub-bar is provided with a first connecting terminal; the second copper bar includes: the plurality of second copper sub-bars are arranged at intervals, and each second copper sub-bar is provided with a second connecting terminal;
the third copper bar includes: a plurality of third sub copper bars arranged at intervals, and a plurality of fourth sub copper bars arranged at intervals; each third sub-copper bar is provided with a third connecting terminal; each fourth sub copper bar is provided with a fourth connecting terminal;
the fourth copper bar includes: a plurality of fifth copper sub-bars arranged at intervals, wherein each fifth copper sub-bar is provided with a fifth connecting terminal; the fifth copper bar includes: and the plurality of sixth copper sub-bars are arranged at intervals, and each sixth copper sub-bar is provided with a sixth connecting terminal.
6. The tap lead configuration of claim 5, wherein:
the first copper sub-bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the first copper sub-bar, and the first copper sub-bar is connected with the connecting holes in a matched manner through fasteners to form the first connecting terminal;
the second copper sub-bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the second copper sub-bar, and the second copper sub-bar is connected with the connecting holes in a matched manner through fasteners to form a second connecting terminal;
the third copper bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the third copper bar, and the third copper bar is matched and connected with the connecting holes through fasteners to form a third connecting terminal;
the fourth copper bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the copper bar, and the wiring holes are matched and connected with the fastening pieces to form a fourth connecting terminal;
the fifth copper sub-bar is provided with a plurality of wiring holes which are arranged at intervals along the length direction of the fifth copper sub-bar, and the fifth copper sub-bar is connected with the wiring holes in a matched manner through fasteners to form a fifth connecting terminal;
the sixth copper bar is provided with a plurality of wiring holes which are distributed at intervals along the length direction of the copper bar, and the wiring holes are matched and connected with the fastening pieces to form the sixth connecting terminal.
7. The tap lead configuration of claim 6, wherein:
the fastener comprises a bolt, and shielding caps are arranged at two ends of the bolt.
8. The tap lead configuration of claim 5, wherein:
an insulator is arranged between any two adjacent first sub copper bars;
an insulator is arranged between any two adjacent second copper bars;
an insulator is arranged between any two adjacent third sub copper bars;
an insulator is arranged between any two adjacent fourth sub copper bars;
an insulator is arranged between any two adjacent fifth copper bars;
an insulator is arranged between any two adjacent sixth copper bars.
9. The tap lead configuration of claim 5, wherein:
the first copper bar further includes: a first drawing frame; all the first copper sub-bars are arranged on the first drawing frame at intervals; the second copper bar includes: a second drawing frame; all the second copper sub-bars are arranged on the second drawing frame at intervals;
the third copper bar further includes: a third drawing frame; all the third copper sub-bars are arranged on the third drawing frame at intervals; all the fourth sub copper bars are arranged on the third drawing frame at intervals;
the fourth copper bar further includes: a fourth drawing frame; all the fourth sub copper bars are arranged on the fourth drawing frame at intervals; the fifth copper bar includes: a fifth drawing frame; all the fifth copper sub-bars are arranged on the fifth drawing frame at intervals;
the first drawing frame, the second drawing frame, the third drawing frame, the fourth drawing frame and the fifth drawing frame are all made of H-level resin fiber drawing plates, and the drawing plates are connected through nylon bolts.
10. A 110kV three-phase combined dry type transformer, comprising: the tap lead arrangement of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320815937.9U CN219349957U (en) | 2023-04-12 | 2023-04-12 | Tapping lead structure of 110kV three-phase combined dry-type transformer and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320815937.9U CN219349957U (en) | 2023-04-12 | 2023-04-12 | Tapping lead structure of 110kV three-phase combined dry-type transformer and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219349957U true CN219349957U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320815937.9U Active CN219349957U (en) | 2023-04-12 | 2023-04-12 | Tapping lead structure of 110kV three-phase combined dry-type transformer and transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219349957U (en) |
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2023
- 2023-04-12 CN CN202320815937.9U patent/CN219349957U/en active Active
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