CN210156237U - Transformer and voltage regulating lead arrangement structure thereof - Google Patents
Transformer and voltage regulating lead arrangement structure thereof Download PDFInfo
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- CN210156237U CN210156237U CN201920790268.8U CN201920790268U CN210156237U CN 210156237 U CN210156237 U CN 210156237U CN 201920790268 U CN201920790268 U CN 201920790268U CN 210156237 U CN210156237 U CN 210156237U
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Abstract
The utility model provides a transformer and voltage regulation lead wire arrangement structure thereof, include: the voltage regulating winding, the tapping tap and the voltage regulating lead are arranged on the transformer; a first odd-level voltage regulating lead and a first even-level voltage regulating lead are respectively led out from a tapping tap at the first end of the voltage regulating winding, and a second odd-level voltage regulating lead and a second even-level voltage regulating lead are respectively led out from a tapping tap at the second end of the voltage regulating winding; the second odd-level voltage regulating lead is led to the first end and converged with the first odd-level voltage regulating lead to form an odd-level voltage regulating main lead, and then the odd-level voltage regulating main lead is led to the first end of the tap switch; leading the first even-level voltage regulating lead wire to a second end, converging the first even-level voltage regulating lead wire and the second even-level voltage regulating lead wire to form an even-level voltage regulating main lead wire, and leading the even-level voltage regulating main lead wire to the second end of the tap switch; the utility model discloses an optimize arranging of pressure regulating lead wire and the mode that the pressure regulating lead wire is drawn forth in groups reduces the occupation space of pressure regulating lead wire, improves transformer inner space utilization efficiency, reduces the installation degree of difficulty and improves the installation effectiveness.
Description
Technical Field
The utility model relates to a transformer technical field, in particular to transformer and voltage regulation lead wire arrangement structure thereof.
Background
Under normal operating conditions of an electric power system, system voltage changes due to operating modes, system connections, load changes, and the like. To ensure the voltage quality, the system voltage must be adjusted accordingly. For example, in a direct current transmission system, in order to compensate the voltage change of an alternating current power grid, in order to enable a trigger angle and a turn-off angle of a converter valve to work in a proper range which is safe and economical, particularly when the direct current system needs voltage reduction operation and the direct current voltage change range is up to 20% -30%, a converter transformer selects an on-load voltage regulating switch which can continuously operate with load and meet the requirement of large-range voltage regulation, so that the requirement of the system is met, and the power supply quality and reliability of the direct current system are improved. In order to meet the requirement of adjusting voltage in a large range, the voltage regulating stage number of the transformer is increased.
In the prior art, generally, voltage regulating leads are centrally arranged and led to an on-load tap-changer after being converged, and finally, voltage regulation is realized.
In consideration of cost and economy of transformer products, the transformer products need to reduce the overall dimension of the transformer body as much as possible on the premise of meeting the internal electrical distance and the installation operation space. The voltage regulating lead is placed in a concentrated mode, the local lead inside the transformer can occupy a large space, the insulation distance between the lead and the lead, the winding and other internal structural components is guaranteed, the operation space requirement of product production and processing is met, and the overall dimension of the transformer needs to be increased. Resulting in increased manufacturing cost of the transformer, decreased economic efficiency, etc.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a transformer voltage regulation lead wire arrangement structure falls into a plurality of groups with the voltage regulation lead wire and draws forth, ensures the insulation distance of voltage regulation lead wire and lead wire, winding and other inner structure spare. And adopt and divide frame formula arrangement structure, reduce the installation degree of difficulty and improve installation effectiveness and inner space utilization.
In order to achieve the above object, the utility model provides a following technical scheme:
a transformer regulating lead arrangement comprising: the voltage regulating winding, the tapping tap and the voltage regulating lead are arranged on the transformer;
the tapping taps arranged at the two ends of the voltage regulating winding respectively comprise odd-level tapping taps and even-level tapping taps, and the voltage regulating lead comprises a first odd-level voltage regulating lead, a second odd-level voltage regulating lead, a first even-level voltage regulating lead and a second even-level voltage regulating lead;
the first odd-level voltage regulating lead is led out from an odd-level tap at the first end of the voltage regulating winding, the second odd-level voltage regulating lead is led out from an odd-level tap at the second end of the voltage regulating winding and led to the first end of the voltage regulating winding to be converged with the first odd-level voltage regulating lead to form an odd-level voltage regulating main lead, and the odd-level voltage regulating main lead is used for being connected with the first end of a tap switch;
the second even-level voltage regulating lead is led out from an even-level tap of the second end of the voltage regulating winding, the first even-level voltage regulating lead is led out from an even-level tap of the first end of the voltage regulating winding and led to the second end of the voltage regulating winding to be converged with the second even-level voltage regulating lead to form an even-level voltage regulating main lead, and the even-level voltage regulating main lead is used for being connected with the second end of the tap switch.
Preferably, the number of the voltage regulating windings is multiple;
the first odd-level voltage regulating lead and the second odd-level voltage regulating lead of each voltage regulating winding are converged to form an odd-level voltage regulating branch lead, and the odd-level voltage regulating branch leads of each voltage regulating winding are converged to form an odd-level voltage regulating main lead; the first even-level voltage regulating lead and the second even-level voltage regulating lead of each voltage regulating winding are converged to form even-level voltage regulating branch leads, and the even-level voltage regulating branch leads of each voltage regulating winding are converged to form the even-level voltage regulating main lead.
Preferably, the plurality of regulating windings at least comprises a first column regulating winding and a second column regulating winding;
the second odd-numbered stage voltage regulating lead of the first column voltage regulating winding is led to the first odd-numbered stage voltage regulating lead of the first column voltage regulating winding from the inter-column gap between the first column voltage regulating winding and the side column; the first even-level voltage regulating lead of the first column voltage regulating winding is led to the second even-level voltage regulating lead of the first column voltage regulating winding from the inter-column gap between the first column voltage regulating winding and the side column;
the second odd-level voltage regulating lead of the second column voltage regulating winding is led to the first odd-level voltage regulating lead of the second column voltage regulating winding from a gap between the first column voltage regulating winding and the second column voltage regulating winding; and the first even-level voltage regulating lead of the second column voltage regulating winding is led to the second even-level voltage regulating lead of the second column voltage regulating winding from a gap between the first column voltage regulating winding and the second column voltage regulating winding.
Preferably, the method further comprises the following steps: the confluence frames are used for being arranged in gaps between two adjacent voltage regulating windings or gaps between a single voltage regulating winding and adjacent side columns;
the confluence frame is used for fixing the part of the second odd-numbered stage voltage regulating lead wire led to the position between the first ends of the voltage regulating windings from the second ends of the voltage regulating windings or fixing the part of the first even-numbered stage voltage regulating lead wire led to the position between the second ends of the voltage regulating windings from the first ends of the voltage regulating windings;
the odd-level voltage regulating main leads are fixed at the first end of the confluence frame, and/or the even-level voltage regulating main leads are fixed at the second end of the confluence frame.
Preferably, the bus frame includes a clamping bracket and a fixing bolt.
Preferably, the tap changer is an on-load tap changer.
A transformer has the transformer voltage regulating lead arrangement structure.
Preferably, the transformer is an oil immersed transformer, and the oil immersed transformer includes an oil tank for accommodating the transformer voltage regulating lead arrangement structure.
According to the technical scheme, the embodiment of the utility model provides an among the transformer voltage regulation lead wire arrangement structure, through optimizing the voltage regulation lead wire and arranging, the mode that the voltage regulation lead wire was drawn forth in groups reduces the occupation space of voltage regulation lead wire, improves transformer inner space's utilization efficiency, reduces the installation degree of difficulty and improves the installation effectiveness. The utility model also provides a transformer, owing to adopted foretell transformer voltage regulation lead wire arrangement structure, consequently it also has corresponding beneficial effect, specifically can refer to the preceding explanation, no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a transformer voltage-regulating lead arrangement structure provided in an embodiment of the present invention;
fig. 2 is a top view of a transformer voltage regulating lead arrangement structure provided in an embodiment of the present invention;
fig. 3 is a left side view of a transformer voltage regulating lead arrangement structure provided by an embodiment of the present invention;
fig. 4 is a partial schematic view of a bus frame fixing pressure regulating lead according to an embodiment of the present invention.
Wherein 110 is a first column voltage regulating winding, and 120 is a second column voltage regulating winding;
200 is a confluence frame, 210 is an insulating screw;
300 is an oil tank;
400 is an on-load tap-changer, 411 is an odd-level voltage regulating area of a first on-load tap-changer, 421 is an even-level voltage regulating area of the first on-load tap-changer, 412 is an odd-level voltage regulating area of a second on-load tap-changer, and 422 is an even-level voltage regulating area of the second on-load tap-changer;
511 is a first odd-level voltage regulating lead of the first column voltage regulating winding, 521 is a second odd-level voltage regulating lead of the first column voltage regulating winding, 531 is a first even-level voltage regulating lead of the first column voltage regulating winding, 541 is a second even-level voltage regulating lead of the first column voltage regulating winding, 512 is a first odd-level voltage regulating lead of the second column voltage regulating winding, 522 is a second odd-level voltage regulating lead of the second column voltage regulating winding, 532 is a first even-level voltage regulating lead of the second column voltage regulating winding, 542 is a second even-level voltage regulating lead of the second column voltage regulating winding, 551 is an odd-level voltage regulating branch lead of the first column voltage regulating winding, 561 is an even-level voltage regulating branch lead of the first column voltage regulating winding, 552 is an odd-level voltage regulating branch lead of the second column voltage regulating winding, and 562 is an even-level voltage regulating branch lead of the second column voltage regulating;
571 is a first column odd-level voltage regulating lead confluence node, 572 is a first column even-level voltage regulating lead confluence node, 573 is a second column odd-level voltage regulating lead confluence node, and 574 is a second column even-level voltage regulating lead confluence node;
580 is the odd-numbered stage voltage regulating bus and 590 is the even-numbered stage voltage regulating bus.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a transformer voltage regulation lead wire arrangement structure, include: the structure of the voltage regulating winding, the tap and the voltage regulating lead can be shown in the reference figures 1 to 3;
the tapping taps arranged at the two ends of the voltage regulating winding respectively comprise odd-level tapping taps and even-level tapping taps so as to realize that the tapping taps at the two ends of the voltage regulating winding are led out according to odd-level voltage regulation and even-level voltage regulation; the voltage regulating leads comprise first odd-level voltage regulating leads, second odd-level voltage regulating leads, first even-level voltage regulating leads and second even-level voltage regulating leads, and the voltage regulating leads are divided into a plurality of groups of leads, so that the insulation distance between the voltage regulating leads and the leads, the insulation distance between the voltage regulating leads and other internal structural members can be ensured;
the first odd-level voltage regulating lead is led out from an odd-level tap at the first end of the voltage regulating winding, the second odd-level voltage regulating lead is led out from an odd-level tap at the second end of the voltage regulating winding and led to the first end (corresponding to the upper end and the lower end in the drawing) of the voltage regulating winding, and converges with the first odd-level voltage regulating lead to form an odd-level voltage regulating main lead 580, the second odd-level voltage regulating lead is led to the first end from the second end of the voltage regulating winding and converges with the first odd-level voltage regulating lead, so that the odd-level voltage regulating leads at the two ends of the voltage regulating winding can be ensured to be in one-to-one correspondence; the odd-level voltage-regulating main lead 580 is used for connecting a first end (corresponding to the upper end in the drawing, the same below) of the tap switch, so that the odd-level voltage-regulating main lead 580 is led in through the first end of the tap switch, the odd-level voltage-regulating main lead 580 is ensured to be in one-to-one correspondence with the contact positions of the tap switch, the lead crossing is avoided, and the lead distance is shortened;
the second even-level voltage regulating lead is led out from an even-level tap of the second end of the voltage regulating winding, the first even-level voltage regulating lead is led out from an even-level tap of the first end of the voltage regulating winding and led to the second end of the voltage regulating winding (corresponding to the lower end in the drawing, the same below), and converges with the second even-level voltage regulating lead to form an even-level voltage regulating main lead 590, the first even-level voltage regulating lead is led to the second end from the first end of the voltage regulating winding and converges with the second even-level voltage regulating lead, so that the even-level voltage regulating leads at the two ends of the voltage regulating winding are ensured to be in one-to-one correspondence, the; the even-level voltage-regulating main lead 590 is used for connecting a second end of the tap switch (corresponding to the lower end of the drawing, the same applies below), so that the even-level voltage-regulating main lead 590 is led in through the second end of the tap switch, thereby ensuring that the even-level voltage-regulating main lead 590 is in one-to-one correspondence with the contact positions of the tap switch, avoiding lead crossing, and shortening the lead distance.
According to the technical solution, the embodiment of the present invention provides a transformer voltage-regulating lead arrangement structure, wherein a tap at a first end of a voltage-regulating winding is used for respectively leading out a first odd-level voltage-regulating lead and a first even-level voltage-regulating lead, and a tap at a second end of the voltage-regulating winding is used for respectively leading out a second odd-level voltage-regulating lead and a second even-level voltage-regulating lead, so as to ensure the insulation distance between the voltage-regulating lead and the lead, between the voltage-regulating lead and other internal structural members; and the second odd-numbered stage voltage regulating lead is led to the first end of the voltage regulating winding and converged with the first odd-numbered stage voltage regulating lead to form an odd-numbered stage voltage regulating main lead 580; similarly, the first even-level voltage regulating lead is led to the second end of the voltage regulating winding to be converged with the second even-level voltage regulating lead to form an even-level voltage regulating main lead 590, so that the voltage regulating leads at the two ends of the voltage regulating winding are ensured to be in one-to-one correspondence, lead intersection is reduced, and the operation space is improved; the odd-level voltage regulating main lead 580 is connected to the first end of the tap switch, and the even-level voltage regulating main lead 590 is connected to the second end of the tap switch, so that the voltage regulating main leads are ensured to be in one-to-one correspondence with the contact positions of the tap switch, lead crossing is avoided, and the lead distance can be shortened; the utility model discloses an optimize the pressure regulating lead wire and arrange, the mode that the pressure regulating lead wire was drawn forth in groups reduces the occupation space of pressure regulating lead wire, improves transformer inner space utilization efficiency, reduces the installation degree of difficulty and improves the installation effectiveness.
In this embodiment, the number of the voltage regulating windings is multiple, and the multiple voltage regulating windings are connected with the multiple tap switches in a one-to-one correspondence manner, and the structure of the voltage regulating windings can be shown in fig. 1 and 3;
the first odd-level voltage regulating lead and the second odd-level voltage regulating lead of each voltage regulating winding are converged to form an odd-level voltage regulating branch lead, and the odd-level voltage regulating leads at the two ends of each voltage regulating winding are internally converged to the first end of the voltage regulating winding to form an odd-level voltage regulating branch lead; the odd-level voltage-regulating branch leads of each voltage-regulating winding are converged to form an odd-level voltage-regulating main lead 580, the odd-level voltage-regulating branch leads of each voltage-regulating winding are divided into frames and converged to form an odd-level voltage-regulating main lead 580, and the odd-level voltage-regulating main leads 580 are further connected to the contact positions of the first ends of the tap switches in a one-to-one correspondence manner, namely the odd-level voltage-regulating branch leads of each voltage-regulating winding are led to the odd-level voltage-regulating regions (namely the first ends of the tap switches) of the corresponding tap switches, so that lead crossing is avoided, and the lead distance can;
the first even-level voltage regulating lead and the second even-level voltage regulating lead of each voltage regulating winding are converged to form an even-level voltage regulating branch lead, and the even-level voltage regulating leads at the two ends of each voltage regulating winding are internally converged to the second end of the voltage regulating winding to form an even-level voltage regulating branch lead; the even-level voltage-regulating branch leads of each voltage-regulating winding are converged to form an even-level voltage-regulating main lead 590, the even-level voltage-regulating branch leads of each voltage-regulating winding are subjected to frame-dividing convergence to form an even-level voltage-regulating main lead 590, and the even-level voltage-regulating main leads 590 are further correspondingly connected to the contact positions of the second end of the tap switch one by one, namely the even-level voltage-regulating branch leads of each voltage-regulating winding are led to the even-level voltage-regulating area (namely the second end of the tap switch) of the corresponding tap switch, so that lead crossing is avoided, and the lead distance can be shortened;
of course, when the number of the voltage regulating windings is single, the second odd-numbered stage voltage regulating leads of the voltage regulating windings are converged at the first odd-numbered stage voltage regulating leads to form an odd-numbered stage voltage regulating main lead 580; the first even-level voltage regulating leads of the voltage regulating windings are converged at the second even-level voltage regulating leads to form an even-level voltage regulating main lead 590.
Specifically, the plurality of regulating windings includes at least a first column regulating winding 110 and a second column regulating winding 120, and the structure thereof can be shown with reference to fig. 1 and 2;
the second odd-numbered stage voltage regulating lead 521 of the first column voltage regulating winding 110 is led to a first column odd-numbered stage voltage regulating lead confluence node 571 from the inter-column gap between the first column voltage regulating winding 110 and the side column, and converged with the first odd-numbered stage voltage regulating lead 511 of the first column voltage regulating winding 110 to form an odd-numbered stage voltage regulating branch 551 of the first column voltage regulating winding; the first even-level voltage-regulating lead 531 of the first column voltage-regulating winding 110 is led to the first column even-level voltage-regulating lead confluence node 572 from the inter-column gap between the first column voltage-regulating winding 110 and the side column, and is converged with the second even-level voltage-regulating lead 541 of the first column voltage-regulating winding 110 to form an even-level voltage-regulating branch lead 561 of the first column voltage-regulating winding; the voltage-regulating lead of the first column voltage-regulating winding 110 is converged by utilizing the inter-column gap region between the column and the side column, so that the utilization rate of the internal space can be improved, and the overall dimension of the transformer can be reduced;
the second odd-numbered stage voltage regulating lead 522 of the second column voltage regulating winding 120 is led to a second odd-numbered stage voltage regulating lead confluence node 573 by a gap between the first column voltage regulating winding 110 and the second column voltage regulating winding 120, and is converged with the first odd-numbered stage voltage regulating lead 512 of the second column voltage regulating winding 120 to form an odd-numbered stage voltage regulating branch 552 of the second column voltage regulating winding; the first even-level voltage regulating lead 532 of the second column voltage regulating winding 120 is led to a second even-level voltage regulating lead confluence node 574 by a gap between the first column voltage regulating winding 110 and the second column voltage regulating winding 120, and is converged with a second even-level voltage regulating lead 542 of the second column voltage regulating winding to form an even-level voltage regulating branch 562 of the second column voltage regulating winding; the voltage regulating leads of the second leg voltage regulating winding 120 converge using the inter-leg gap region of the leg and the first leg voltage regulating winding 110, which can improve the utilization of the inner space to reduce the overall size of the transformer.
As shown in fig. 1, the odd-numbered stage voltage regulating branch 551 of the first column voltage regulating winding and the odd-numbered stage voltage regulating branch 552 of the second column voltage regulating winding are merged to form an odd-numbered stage voltage regulating main lead 580; an even-level voltage regulating branch lead 561 of the first column voltage regulating winding and an even-level voltage regulating branch lead 562 of the second column voltage regulating winding are converged to form an even-level voltage regulating main lead 590; the odd-level voltage-regulating main leads 580 are led to the odd-level voltage-regulating regions of the corresponding tap switches one by one, and the even-level voltage-regulating main leads 590 are led to the even-level voltage-regulating regions of the corresponding tap switches one by one, so that the leads of each voltage-regulating winding can be firstly connected to the corresponding tap switch and secondly led to the contact position of the tap switch correspondingly, lead crossing is avoided, and lead distance is shortened.
In order to further optimize the above technical solution, the method further comprises: the convergence frames 200 are used for being arranged in a gap between two adjacent voltage regulating windings or a gap between a single voltage regulating winding and an adjacent side column, so that the space between the columns can be fully utilized, and the electrical distance of the lead is ensured. For example, the bus frame 200 is disposed in a gap between the first column voltage regulating winding 110 and the second column voltage regulating winding 120 or a gap between the first column voltage regulating winding 110 and the side column, and the structure thereof can be shown in fig. 1 and 2;
the confluence frame 200 is used for fixing the part of the second odd-numbered stage voltage regulating lead wire led from the second end of the voltage regulating winding to the first end of the voltage regulating winding, or fixing the part of the first even-numbered stage voltage regulating lead wire led from the first end of the voltage regulating winding to the second end of the voltage regulating winding, so as to ensure the stability of the wiring of the voltage regulating lead wire from the first end to the second end/the second end to the first end of the voltage regulating winding. For example, the bus frame 200 located in the gap between the first column voltage regulating winding 110 and the second column voltage regulating winding 120, the second odd-numbered stage voltage regulating lead 522 for fixing the second column voltage regulating winding is led from the second end of the second column voltage regulating winding 120 to the portion between the second column odd-numbered stage voltage regulating lead bus nodes 573, or the second even-numbered stage voltage regulating lead 542 for fixing the second column voltage regulating winding is led from the first end of the second column voltage regulating winding 120 to the portion between the second even-numbered stage voltage regulating lead bus nodes 574; the fixing manner of the collecting frame 200 located in the inter-column gap between the first column voltage-regulating winding 110 and the side column is the same as above, and is not described herein;
the odd-level voltage-regulating main leads 580 are fixed at the first end of the confluence frame 200, and/or the even-level voltage-regulating main leads 590 are fixed at the second end of the confluence frame 200, so that the odd-level voltage-regulating main leads 580 at the first end of the confluence frame 200 can be connected to the first end of the tap switch nearby, and the even-level voltage-regulating main leads 590 at the second end of the confluence frame 200 can be connected to the second end of the tap switch nearby, so that the voltage-regulating main leads and the contact positions of the tap switch are in one-to-one correspondence, the leads are prevented from crossing, and the lead distance is shortened;
to further explain with reference to the first column voltage regulating winding 110 and the second column voltage regulating winding 120, taking the first column voltage regulating winding 110 as an example, the second odd-numbered stage voltage regulating lead 521 of the first column voltage regulating winding is led from the second end of the first column voltage regulating winding 110 to the first end of the first column voltage regulating winding 110 and converged with the first odd-numbered stage voltage regulating lead 511 of the first column voltage regulating winding; accordingly, the second odd-numbered stage voltage-regulating leads 521 of the first column voltage-regulating winding are fixed to the second end, the middle end and the first end of the confluence frame 200 in sequence, and are finally converged with the first odd-numbered stage voltage-regulating leads 511 of the first column voltage-regulating winding located at the first end of the confluence frame 200 to form odd-numbered stage voltage-regulating branch leads 551 of the first column voltage-regulating winding, and the odd-numbered stage voltage-regulating branch leads 551 of the first column voltage-regulating winding are also fixed to the first end of the confluence frame 200 so as to be led to the first end of the corresponding tap switch nearby (i.e. the odd-numbered stage voltage-regulating area);
a first even-stage voltage-regulating lead 531 of the first column voltage-regulating winding, leading from the first end of the first column voltage-regulating winding 110 to the second end of the first column voltage-regulating winding 110, and merging with a second even-stage voltage-regulating lead 541 of the first column voltage-regulating winding; accordingly, the first even-numbered stage voltage-regulating leads 531 of the first column voltage-regulating windings are fixed to the first end, the middle end and the second end of the confluence frame 200 in sequence, and finally are converged with the second even-numbered stage voltage-regulating leads 541 of the first column voltage-regulating windings located at the second end of the confluence frame 200 to form even-numbered stage voltage-regulating branched leads 561 of the first column voltage-regulating windings, and the even-numbered stage voltage-regulating branched leads 561 of the first column voltage-regulating windings are also fixed to the second end of the confluence frame 200 so as to be guided to the second end (i.e., even-numbered stage voltage-regulating region) of the corresponding tap switch nearby.
Preferably, the bus frame 200 includes a clamping bracket and a fixing bolt. The current converging frame 200 adopts a plurality of clamping supports to install the voltage regulating lead wires, ensures that the voltage regulating lead wires are laid towards a preset track, and further fixes the voltage regulating lead wires through fixing bolts to ensure the stability of the laid wires. The structure can be seen in fig. 4, and is fixed by an insulating screw 210. The laying mode that chooses for use centre gripping support and fixing bolt as the pressure regulating lead wire has characteristics such as the installation is convenient, simple structure.
In this embodiment the tap changer is an on-load tap changer 400. Compare with no-load tap-changer, the condition of multistage voltage regulation can be handled to on-load tap-changer 400, moreover the utility model provides an application scenario of scheme is for the needle pressure regulating progression is many, the condition that the pressure regulating lead wire radical is many, so choose for use on-load tap-changer 400 to be particularly suitable for this scheme.
To be specifically described in conjunction with the first column voltage regulating winding 110 and the second column voltage regulating winding 120, the structure of which can be seen in fig. 1 and 3, the odd-numbered stage voltage regulating branch lead 551 of the first column voltage regulating winding is led to the odd-numbered stage voltage regulating region 411 of the first on-load tap-changer after confluence, and the even-numbered stage voltage regulating branch lead 561 of the first column voltage regulating winding is led to the even-numbered stage voltage regulating region 421 of the first on-load tap-changer after confluence; similarly, the odd-numbered tap changing leads 552 of the second column tap changing winding are merged and led to the odd-numbered tap changing area 412 of the second on-load tap changer, and the even-numbered tap changing leads 562 of the second column tap changing winding are merged and led to the even-numbered tap changing area of the second on-load tap changer.
The embodiment of the utility model provides a transformer is still provided, transformer have as above transformer voltage regulation lead wire arrangement structure. Due to the adoption of the arrangement structure of the voltage regulating lead wire of the transformer, the arrangement structure has corresponding beneficial effects, and specific reference can be made to the foregoing description, so that the detailed description is omitted.
Specifically, the transformer is an oil immersed transformer, and the oil immersed transformer includes an oil tank 300 for accommodating the transformer regulating lead arrangement structure as described above, and the structure thereof can be seen with reference to fig. 1 and 3. The arrangement structure of the voltage-regulating lead wires of the transformer relates to more voltage-regulating lead wires, although the laying path of the voltage-regulating lead wires is optimized, in order to ensure the insulation distance and the operation space of the voltage-regulating lead wires, a transformer with a larger size needs to be equipped to bear the lead wire arrangement in the scheme, and an oil-immersed transformer with a large size is generally designed to meet the matching requirement, so that the oil-immersed transformer is particularly suitable for the scheme. Of course, the present structure can also be applied to a non-oil immersed type transformer.
The present solution is further described below with reference to specific embodiments:
the utility model provides a transformer voltage regulation lead wire divides frame arrangement structure, to the pressure regulating progression is many, the many circumstances of pressure regulating lead wire radical, fall into a plurality of groups with the pressure regulating lead wire and draw forth, ensure the insulation distance of pressure regulating lead wire and lead wire, winding and other inner structure spare. And adopt and divide frame formula arrangement structure, reduce the installation degree of difficulty and improve installation effectiveness and inner space utilization.
As shown in fig. 1, 2 and 3, according to the actual voltage regulating stage number of the voltage regulating winding of the transformer, the tapping taps at the upper end and the lower end of each column of voltage regulating winding are respectively led out according to the voltage regulation at odd-numbered stages and the voltage regulation at even-numbered stages. The voltage-regulating leads of the second column voltage-regulating winding 120 are converged by utilizing the inter-column gap region of the first column voltage-regulating winding 110 and the second column voltage-regulating winding 120, the odd-level voltage regulation is converged by the upper end of the converging frame 200, and the even-level voltage-regulating leads are converged by the lower end of the converging frame 200 and are respectively led to the on-load tap-changer 400 from the upper end and the lower end after being converged. The voltage-regulating leads of the first column voltage-regulating winding 110 converge by using the inter-column gap region between the first column voltage-regulating winding 110 and the side column, odd-numbered voltage-regulating leads converge through the upper end of the convergence frame 200, even-numbered voltage-regulating leads converge through the lower end of the convergence frame 200, and lead to the on-load tap-changer 400 from the upper end and the lower end respectively after converging. The lead wire is divided into groups and is divided into frames to converge, the one-to-one correspondence of the upper lead wire and the lower lead wire can be ensured, the lead wire intersection is reduced, the operation space is enlarged, the space between the columns is fully utilized, and the electrical distance of the lead wire is ensured. After the voltage regulating lead frames of the first column voltage regulating winding 110 and the second column voltage regulating winding 120 are converged, the odd-level voltage regulation and the even-level voltage regulation are respectively divided into two groups up and down and led to the on-load tap-changer 400. Odd-numbered stage voltage-regulating branch leads are led in through the upper side of the on-load tap-changer 400, even-numbered stage voltage-regulating branch leads are led in through the lower side of the on-load tap-changer 400, so that the leads are ensured to be in one-to-one correspondence with the contact positions of the on-load tap-changer 400, the leads are prevented from being crossed, and the lead distance is shortened.
The utility model has the advantages that:
the upper tapping head and the lower tapping head of each column of voltage regulating winding are respectively led out in odd-numbered combined even-numbered groups, so that the numbers of the leads at the upper end and the lower end are in one-to-one correspondence when the upper end and the lower end of the tapping head of each column of voltage regulating winding converge, the lead intersection is reduced, and the operation is convenient. The tapping and tapping frame of the two-column voltage regulating winding is converged, so that the internal space of the transformer can be fully utilized, and the space utilization rate is improved. The odd-numbered stage voltage-regulating branch leads of each column of voltage-regulating leads are led into the on-load tap-changer 400 from the upper end, and the even-numbered stage voltage-regulating branch leads are led into the on-load tap-changer 400 from the lower end, so that the positions of the leads and the contacts of the on-load tap-changer 400 can be ensured to be in one-to-one correspondence, the leads are prevented from being crossed, and the lead.
The utility model discloses the key point of design:
1. the lead wire is divided into groups and is divided into frames to converge, the one-to-one correspondence of the upper lead wire and the lower lead wire can be ensured, the lead wire intersection is reduced, the operation space is enlarged, the space between the columns is fully utilized, and the electrical distance of the lead wire is ensured.
2. After the lead wires are divided into frames and converged, the odd-level voltage regulation and the even-level voltage regulation are respectively divided into two groups up and down and led to the on-load tap-changer 400. Odd-numbered stage voltage-regulating branch leads are led in through the upper side of the on-load tap-changer 400, even-numbered stage voltage-regulating branch leads are led in through the lower side of the on-load tap-changer 400, so that the leads are ensured to be in one-to-one correspondence with the contact positions of the on-load tap-changer 400, the leads are prevented from being crossed, and the lead distance is shortened.
To sum up, the utility model provides a transformer and voltage regulation lead wire arrangement structure thereof, set the tapping tap at the voltage regulation winding both ends into odd number level tapping tap and even number level tapping tap, draw forth first odd number level voltage regulation lead wire and first even number level voltage regulation lead wire respectively from the tapping tap of the first end of voltage regulation winding, draw forth second odd number level voltage regulation lead wire and second even number level voltage regulation lead wire respectively from the tapping tap of the second end of voltage regulation winding; the voltage regulating lead wires are divided into a plurality of groups to be led out, so that the insulation distance between the voltage regulating lead wires and the lead wires, the winding and other internal structural components is ensured; leading the second odd-level voltage regulating lead wire from the second end of the voltage regulating winding to the first end of the voltage regulating winding to be converged with the first odd-level voltage regulating lead wire to form an odd-level voltage regulating main lead wire; similarly, the first even-level voltage regulating lead is led to the second end of the voltage regulating winding from the first end of the voltage regulating winding and converged with the second even-level voltage regulating lead to form an even-level voltage regulating main lead, so that the voltage regulating leads at the two ends of the voltage regulating winding are ensured to be in one-to-one correspondence, lead intersection is reduced, and the operation space is improved;
when the number of the voltage regulating windings is single, a lead of the second odd-level voltage regulating lead converged behind the first odd-level voltage regulating lead is an odd-level voltage regulating main lead; when the number of the voltage regulating windings is multiple, a lead formed by converging odd-level voltage regulating branch leads of each voltage regulating winding is an odd-level voltage regulating main lead;
taking the case of a plurality of voltage regulating windings as an example, the odd-level voltage regulating branch leads of each voltage regulating winding are converged to form an odd-level voltage regulating main lead, and the odd-level voltage regulating main lead is connected to an odd-level voltage regulating area of a tap switch corresponding to each voltage regulating winding; the even-level voltage-regulating branch leads of each voltage-regulating winding are converged to form an even-level voltage-regulating main lead, and the even-level voltage-regulating main lead is connected to an even-level voltage-regulating area of the tap switch corresponding to each voltage-regulating winding, so that the voltage-regulating main leads are ensured to be in one-to-one correspondence with the contact positions of the tap switches, lead crossing is avoided, and the lead distance can be shortened; in addition, the voltage regulating lead of the voltage regulating winding is supported and fixed through the confluence frame, and the stability of the installation of the voltage regulating lead is ensured. The utility model discloses an optimize the pressure regulating lead wire and arrange, the mode that the pressure regulating lead wire was drawn forth in groups reduces the occupation space of pressure regulating lead wire, improves transformer inner space utilization efficiency, reduces the installation degree of difficulty and improves the installation effectiveness.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A transformer regulating lead arrangement, comprising: the voltage regulating winding, the tapping tap and the voltage regulating lead are arranged on the transformer;
the tapping taps arranged at the two ends of the voltage regulating winding respectively comprise odd-level tapping taps and even-level tapping taps, and the voltage regulating lead comprises a first odd-level voltage regulating lead, a second odd-level voltage regulating lead, a first even-level voltage regulating lead and a second even-level voltage regulating lead;
the first odd-level voltage regulating lead is led out from an odd-level tap at the first end of the voltage regulating winding, the second odd-level voltage regulating lead is led out from an odd-level tap at the second end of the voltage regulating winding and led to the first end of the voltage regulating winding to be converged with the first odd-level voltage regulating lead to form an odd-level voltage regulating main lead (580), and the odd-level voltage regulating main lead (580) is used for being connected with the first end of a tap switch;
the second even-level voltage regulating lead is led out from an even-level tap of the second end of the voltage regulating winding, the first even-level voltage regulating lead is led out from an even-level tap of the first end of the voltage regulating winding and led to the second end of the voltage regulating winding to be converged with the second even-level voltage regulating lead to form an even-level voltage regulating main lead (590), and the even-level voltage regulating main lead (590) is used for being connected with the second end of the tap switch.
2. The transformer tap lead arrangement of claim 1 wherein the tap winding is plural in number;
the first odd-level voltage regulating lead and the second odd-level voltage regulating lead of each voltage regulating winding are converged to form an odd-level voltage regulating branch lead, and the odd-level voltage regulating branch leads of each voltage regulating winding are converged to form an odd-level voltage regulating main lead (580); the first even-level voltage regulating lead and the second even-level voltage regulating lead of each voltage regulating winding are converged to form even-level voltage regulating branch leads, and the even-level voltage regulating branch leads of each voltage regulating winding are converged to form the even-level voltage regulating main lead (590).
3. The transformer tap lead arrangement of claim 2, wherein the plurality of tap windings comprises at least a first leg tap winding (110) and a second leg tap winding (120);
the second odd-numbered stage voltage regulating lead (521) of the first column voltage regulating winding (110) is led to the first odd-numbered stage voltage regulating lead (511) of the first column voltage regulating winding (110) from the column gap between the first column voltage regulating winding (110) and a side column; a first even-level voltage regulating lead (531) of the first column voltage regulating winding (110) is led to a second even-level voltage regulating lead (541) of the first column voltage regulating winding (110) from an inter-column gap between the first column voltage regulating winding (110) and a side column;
a second odd-numbered stage voltage regulating lead (522) of the second column voltage regulating winding (120) is led to a first odd-numbered stage voltage regulating lead (512) of the second column voltage regulating winding (120) from a gap between the first column voltage regulating winding (110) and the second column voltage regulating winding (120); and a first even-level voltage regulating lead (532) of the second column voltage regulating winding (120) is led to a second even-level voltage regulating lead (542) of the second column voltage regulating winding (120) from a gap between the first column voltage regulating winding (110) and the second column voltage regulating winding (120).
4. The transformer tap lead arrangement of claim 2, further comprising: a plurality of confluence frames (200), wherein the confluence frames (200) are used for arranging a gap between two adjacent voltage regulating windings or a gap between a single voltage regulating winding and an adjacent side post;
the confluence frame (200) is used for fixing the part of the second odd-numbered stage voltage regulating lead wire led to the position between the first ends of the voltage regulating windings from the second ends of the voltage regulating windings or fixing the part of the first even-numbered stage voltage regulating lead wire led to the position between the second ends of the voltage regulating windings from the first ends of the voltage regulating windings;
the odd-numbered stage voltage regulating bus (580) is fixed to a first end of the bus frame (200), and/or the even-numbered stage voltage regulating bus (590) is fixed to a second end of the bus frame (200).
5. The transformer tap lead arrangement according to claim 4, wherein the bus frame (200) comprises a clamping bracket and a fixing bolt.
6. The transformer tap pin arrangement according to claim 1, wherein the tap changer is an on-load tap changer (400).
7. A transformer, characterized in that it has a transformer tap lead arrangement as claimed in any one of claims 1 to 6.
8. The transformer according to claim 7, characterized in that it is an oil-filled transformer comprising an oil tank (300) for housing said transformer tap lead arrangement.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863828A (en) * | 2021-01-13 | 2021-05-28 | 山东电力设备有限公司 | 750kV transformer outgoing line device and installation process method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863828A (en) * | 2021-01-13 | 2021-05-28 | 山东电力设备有限公司 | 750kV transformer outgoing line device and installation process method |
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