CN108417369B - Amorphous alloy on-load capacity-regulating plant insulating oil transformer - Google Patents

Amorphous alloy on-load capacity-regulating plant insulating oil transformer Download PDF

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Publication number
CN108417369B
CN108417369B CN201810117702.6A CN201810117702A CN108417369B CN 108417369 B CN108417369 B CN 108417369B CN 201810117702 A CN201810117702 A CN 201810117702A CN 108417369 B CN108417369 B CN 108417369B
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regulating
voltage
winding
oil tank
load capacity
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CN108417369A (en
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黎斌
覃再兴
唐仕平
韦小贤
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Guangxi Nanbaote Electric Manufacturing Co ltd
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Guangxi Nanbaote Electric Manufacturing Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/341—Preventing or reducing no-load losses or reactive currents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

The invention discloses an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer which comprises a transformer body, a high-voltage insulating sleeve, a low-voltage insulating sleeve, a control cabinet and an on-load capacity-regulating voltage-regulating tapping switch. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer can regulate capacity and voltage under the condition of loading.

Description

Amorphous alloy on-load capacity-regulating plant insulating oil transformer
Technical Field
The invention relates to the technical field of transformer equipment, in particular to an amorphous alloy on-load capacity-regulating plant insulating oil transformer.
Background
The transformer is the most important equipment in the power industry, in the vast distribution system network of China, the distribution transformer lacks automatic voltage regulating device, and the rated capacity of the existing transformer in China is mostly fixed and is prepared according to the maximum load of users at present, but the electricity consumption in residential areas and rural areas in one day is quite different, and some capacity-regulating voltage-regulating transformers can only be manually regulated, often generate quite large voltage difference due to untimely regulation, so that the normal use and service life of household appliances are seriously influenced, and the current transformer of a large number of transformers is exposed in the external environment, so that the precision of the current transformer is quite easy to be reduced or damaged, and the operation of the transformer is influenced. Therefore, the transformer is an urgent task in the technical field of transformers, and the requirements of high efficiency and energy conservation of the transformer are met by continuously reducing the loss of the transformer, improving the heat dissipation effect and simplifying the capacity and voltage regulation complexity.
Disclosure of Invention
The invention aims to provide an amorphous alloy on-load capacity-regulating plant insulating oil transformer, which can effectively delay insulation aging, improve the service life of the transformer and effectively solve the technical problems of high self-loss, low automation degree and overhigh operation loss of the transformer, wherein a control cabinet is arranged on the transformer, a current transformer is arranged in the control cabinet, and the capacity of the transformer can be automatically regulated according to the electricity consumption of a user, so that the current transformer is protected, and the invention adopts the following technical scheme to realize the purposes:
according to one aspect of the invention, there is provided an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer, comprising a transformer body, a high-voltage insulating sleeve, a low-voltage insulating sleeve, a control cabinet and an on-load capacity-regulating voltage-regulating tapping switch, wherein the transformer body comprises an oil tank body, an oil tank cover, a clamping piece, an amorphous alloy core and a winding wound on the amorphous alloy core, the amorphous alloy core and the winding wound on the amorphous alloy core are fixed through the clamping piece and soaked in the oil tank filled with vegetable insulating oil, the oil tank cover is in sealing connection with a top opening of the oil tank body, the high-voltage insulating sleeve and the low-voltage insulating sleeve are fixed on the oil tank cover in parallel, one end of the high-voltage insulating sleeve extends into the oil tank body from the oil tank cover to be electrically connected with a primary coil lead of the winding, the other end of the high-voltage insulating sleeve extends upwards from the surface of the oil tank cover, one end of the low-voltage insulating sleeve extends into the oil tank body from the primary coil lead of the winding to be electrically connected with the oil tank body, one end of the low-voltage insulating sleeve extends from the oil tank cover to the primary coil lead of the winding, the low-voltage insulating sleeve extends from the oil tank cover to the primary coil lead of the winding to be electrically connected with the primary coil lead of the winding, the low-voltage regulating winding is arranged on the intelligent transformer and the intelligent transformer is connected with the side of the intelligent transformer, and the intelligent transformer is arranged on the side of the intelligent transformer, the intelligent transformer is connected with the intelligent transformer, and the intelligent transformer is arranged on the intelligent transformer, and the transformer is connected with the intelligent transformer and the winding and the transformer.
In the above scheme, it is further preferable that the primary coil of the winding is divided into a first section and a second section, the distance between the first section and the second section is not less than 6mm, the number of branch joints of the on-load capacity-regulating voltage-regulating tap switch is not less than 6, and an oil duct extending along the winding direction is arranged in a gap between the secondary coil of the winding and/or the primary coil of the coil winding, and the caliber of the oil duct is not less than 4mm.
The above scheme is further preferable, the low-voltage insulation sleeve is fixed on one lateral side of the oil tank body, the control cabinet and the low-voltage insulation sleeve are arranged on the same side of the oil tank body, and the secondary coil lead end is arranged in the control cabinet.
The scheme is further preferable that cable clamps are further arranged in the control cabinet, the three current transformers are arranged below the ends of the leads of the secondary coil of the winding and are in one-to-one correspondence with the three-phase leads of the secondary coil of the winding, the four cable clamps are arranged below the current transformers, and the cable clamps are in one-to-one correspondence with the leads of the secondary coil of the winding.
In the above scheme, it is further preferable that three sides of the oil tank body are respectively provided with a plurality of corrugated sheets which are vertically parallel to each other and are hollow and flat, and the corrugated sheets of each side are communicated with the oil tank body; fixing rods are transversely arranged at the upper end and the lower end of the corrugated sheet respectively and fixedly connected with the corrugated sheet.
The clamping piece and the amorphous alloy core body are provided with insulating rubber gaskets, the clamping piece comprises an upper fixing part, a lower fixing part and a plurality of clamping parts which are vertically and parallelly fixed between the upper fixing part and the lower fixing part, annular grooves are formed in the clamping parts, and through holes and clamping interfaces are respectively formed in the centers and the edges of the upper fixing part and the lower fixing part.
The transformer further comprises an oil level gauge and a mercury thermometer which are respectively and fixedly arranged at two ends of the upper front side of the oil tank cover.
The scheme is further preferable, a manhole and a hanging ring are further arranged on the oil tank cover, the manhole is square, and at least four hanging rings are arranged.
The above solution is further preferred in that the coils of the high voltage side of the winding are connected in a delta or star shape.
The above solution is further preferred, wherein the electromagnetic density of the amorphous alloy core is selected to be between 1.3 and 1.35.
In summary, the invention adopts the technical scheme, and has the following technical effects:
(1) The intelligent controller is connected with the current transformer and the on-load capacity-regulating voltage-regulating tapping switch, when the automatic on-load capacity-regulating voltage-regulating transformer works, the intelligent controller monitors the data of a circuit in real time through the current transformer, the capacity of the transformer is automatically regulated through controlling the on-load capacity-regulating voltage-regulating tapping switch, when the electricity consumption requirement of a user is large, the intelligent controller controls the on-load capacity-regulating voltage-regulating tapping switch to enable the high-voltage side of the winding of the transformer to be in triangular connection, the low-voltage side is in star connection and is provided with a neutral line tap, the high-voltage side and the low-voltage side are in 30 DEG phase difference, namely Dyn11 connection, at the moment, the intelligent controller controls the on-load capacity-regulating voltage-regulating tapping switch to enable the high-voltage side of the winding of the transformer to be in star connection, the low-voltage side is in star connection and is provided with a neutral line tap, and the high-voltage and the low-voltage does not have a phase difference, namely Yyn0 connection, at the moment, the capacity of the transformer is reduced, the electricity consumption requirement of the user is met, the no-load loss of the transformer, the energy is saved, the automatic user is ensured, the transformer oil is used, the transformer oil is filled with an automatic capacity-regulating transformer, the transformer is filled with a transformer, the transformer is provided with a transformer body, the energy-saving transformer is and the heat-saving transformer is provided with a heat-insulating plate, the heat-insulating plate is and the heat-insulating plate, the heat-insulating plate is prevented from being contracted, and the heat-insulating plate is and the heat-insulating plate.
(2) The plant insulating oil is used as an insulating medium (the plant insulating oil is natural ester insulating cooling liquid), the ignition point is higher than 300 ℃, the natural degradation can be realized, the electrical performance is high, the insulating aging can be effectively delayed, and the service life of the transformer is prolonged. The fire-proof composite material has the characteristics of excellent environmental performance, chemical performance, electrical performance, fire-proof safety and the like. The plant insulating oil is nontoxic, has green color, and shows the environment-friendly characteristic.
(3) The invention solves the technical problems of high loss of the transformer, low automation degree and overhigh operation loss, reduces the production and manufacturing cost and has good economic and social benefits; according to the invention, the oil duct is arranged on the winding direction or radial surface of the winding, so that the heat dissipation requirement is ensured, meanwhile, the material is saved, the problems of high viscosity of plant insulating oil and pollution to the winding are solved, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the front view structure of an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer of the invention;
FIG. 2 is a schematic cross-sectional view of an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to the present invention;
FIG. 3 is a schematic diagram showing a schematic cross-sectional structure of an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to the present invention
Fig. 4 is a schematic diagram of the internal structure of a control cabinet of an amorphous alloy on-load capacity-regulating plant insulating oil transformer according to the invention;
FIG. 5 is a schematic diagram of the secondary coil structure of an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to the present invention;
FIG. 6 is a schematic view of the structure of the clamping member of the present invention;
FIG. 7 is a schematic diagram of the connection principle between an on-load capacity-regulating voltage-regulating tap changer and a primary coil of an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to the present invention;
FIG. 8 is a schematic diagram of the connection principle between an on-load capacity-regulating voltage-regulating tap changer and a secondary coil of an amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to the present invention;
in the drawings, a 1-transformer body, a 2-high-voltage insulating sleeve, a 3-low-voltage insulating sleeve, a 4-control cabinet, a 5-on-load capacity-regulating and voltage-regulating tapping switch, a 6-oil level gauge, a 7-mercury thermometer, a 100-oil tank body, a 101-corrugated sheet, a 102-fixed rod, a 103-supporting seat, a 104-lifting lug, a 105-oil drain valve, a 106-amorphous alloy core, a 107-winding, a 108-clamping piece, a 200-oil tank cover, a 201-manhole, a 202-lifting ring, a 400-current transformer, a 401-cable clamp, a 402-intelligent controller, a 108 a-upper fixing part, a 108 b-lower fixing part, a 108-clamping part 108c,108 d-annular groove, 1070-oil ducts, a 108 e-through hole and a 108 f-clamping interface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below by referring to the accompanying drawings and by illustrating preferred embodiments. It should be noted, however, that many of the details set forth in the description are merely provided to provide a thorough understanding of one or more aspects of the invention, and that these aspects of the invention may be practiced without these specific details.
As shown in fig. 1, 2, 3 and 4, the amorphous alloy on-load capacity-regulating vegetable insulating oil transformer provided by the invention comprises a transformer body 1, a high-voltage insulating sleeve 2, a low-voltage insulating sleeve 3, a control cabinet 4 and an on-load capacity-regulating voltage-regulating tapping switch 5, wherein the transformer body 1 comprises an oil tank body 100, an oil tank cover 200, a clamping piece 108, an amorphous alloy core 106 and a winding 107 wound on the amorphous alloy core 106, the amorphous alloy core 106 and the winding wound on the amorphous alloy core 106 are fixed through the clamping piece and soaked in the oil tank body 100 filled with vegetable insulating oil, the oil tank cover 200 is in sealing connection with an opening at the top end of the oil tank body 100, so that the transformer body 1 is sealed in the oil tank body 100, the high-voltage insulating sleeve 2 and the low-voltage insulating sleeve 3 are parallelly fixed on the oil tank cover 200, one end of the high-voltage insulating sleeve 2 extends from the oil tank cover 200 into the oil tank body 100 to be electrically connected with the primary coil lead of the winding 107, the other end of the high-voltage insulating sleeve 2 extends upwards from the surface of the oil tank cover 200 to lead out the primary coil lead end of the winding 107 from the oil tank body 100, one end of the low-voltage insulating sleeve 3 extends from the oil tank cover 200 into the oil tank body 100 to be electrically connected with the primary coil lead of the winding 107, the other end of the low-voltage insulating sleeve 3 extends upwards from the surface of the oil tank cover 200 to lead out the secondary coil lead end of the winding 107 from the oil tank body 100, the control cabinet 4 is arranged on one lateral side of the oil tank body 100, a current transformer 400 and an intelligent controller 402 are arranged in the control cabinet 4, the primary coil lead of the winding 107 passes through a through hole of the current transformer 400, the intelligent controller 402 is respectively connected with the current transformer 400 and the on-load capacity-regulating voltage-regulating tap switch 5, and the on-load capacity-regulating voltage-regulating tap switch 5 is hermetically arranged on the fuel tank cap 200 and is electrically connected with the winding 107; still be provided with cable clamp 401 in switch board 4, current transformer 400 is provided with three, current transformer 400 installs in the below of the secondary coil lead end of winding, and is one-to-one with the three-phase lead of the secondary coil of winding, cable clamp 401 is provided with four, cable clamp 401 installs in the below of current transformer 400, and this cable clamp 401 is one-to-one with the lead of the secondary coil of winding 107, intelligent control ware adopts the DSP treater (also can adopt to have and carry the appearance voltage regulation controller), and this cable clamp 401 closely and smoothly holds the lead of the secondary coil of winding 107 in switch board 4.
In the invention, as shown in fig. 1, 2, 3 and 4, the low-voltage insulating sleeve 3 is fixed on one lateral side of the oil tank body 100, the control cabinet 4 and the low-voltage insulating sleeve 3 are arranged on the same side of the oil tank body 100, the secondary coil lead ends are arranged in the control cabinet 4, three sides of the oil tank body 100 are respectively provided with a plurality of corrugated sheets 101 which are vertically parallel to each other and are hollow and flat, and the corrugated sheets 101 on each side are communicated with the inside of the oil tank body 100; the upper end and the lower end of the corrugated sheet 101 are respectively and transversely provided with the fixing rod 102, the fixing rod 102 is fixedly connected with the corrugated sheet 101, when transformer oil in the oil tank body 100 is circularly fanned by the corrugated sheet 101, the corrugated sheet 101 can shrink or expand due to the temperature difference in the circulation process, the fixing rod 102 is connected between adjacent corrugated sheets in series, the corrugated sheets can be prevented from being shifted or deformed due to shrinkage and expansion, the transformer further comprises an oil level gauge 6 and a mercury thermometer 7, the oil level gauge 6 and the mercury thermometer 7 are respectively and fixedly arranged at the two ends of the upper front side of the oil tank cover 200, a manhole 201 and a hanging ring 202 are further arranged on the oil tank cover 200, the manhole 201 is square, and the hanging ring 202 is provided with at least four.
In the present invention, as shown in fig. 5 and fig. 6, the primary coil of the winding 107 is divided into a first section and a second section, the distance between the first section and the second section is not less than 6mm, the number of branch joints of the on-load capacity-regulating voltage-regulating tap changer 5 is not less than 6, the primary coil of the winding is divided into two sections, 6 lead heads are led out from each section, and the lead heads are connected with the capacity-regulating switch to realize serial-parallel conversion between the two sections of the low-voltage coil; the high-voltage coil is also provided with 6 lead heads, the lead heads are connected with a capacity-regulating switch to realize Y/D connection conversion and tap gear regulation among three-phase high-voltage coils, an oil duct 1070 which extends along the winding direction is arranged in a gap between a secondary coil of the winding 107 and/or a primary coil of the winding 107, the caliber of the oil duct 1070 is not less than 4mm, thereby forming a passage for plant insulating oil to pass through between the windings, and the occurrence of dead oil areas and local overheating phenomena is effectively avoided when oil flows and temperature rises.
In the present invention, as shown in fig. 6, an insulating rubber pad (not shown) is disposed on the clamping member 108 and the amorphous alloy core, so as to prevent the clamping member 108 from damaging the winding group, the electromagnetic density of the amorphous alloy core 106 is selected to be between 1.3 and 1.35, the clamping member 108 includes an upper fixing portion 108a, a lower fixing portion 108b, and a plurality of clamping portions 108c vertically and parallelly fixed between the upper fixing portion 108a and the lower fixing portion, an annular groove 108d is formed on the clamping portion 108c, the size and number of the annular groove 108d can be adjusted according to actual needs, the structure effectively increases the insulation distance from the lead to the mounting clamping member, not only ensures the mechanical strength of the lead, but also satisfies the electrical distance of the lead, without increasing the size of the oil tank, and the through holes 108e and the clamping interfaces 108f are formed at the center and edge of the upper fixing portion 108a and the lower fixing portion 108b, respectively, so that the plant insulating oil can pass through the clamping member 108, when the plurality of clamping members 108 are used for fixing the amorphous alloy core 108, the plurality of clamping members 108 can be clamped by the clamping members 108, and the opposite winding can be fixed on the amorphous alloy core 100 by mutually and the connecting block 100, and the connecting block can be stably fixed in the oil tank 107.
As shown in fig. 1 to 8, further explaining the working principle of the amorphous alloy on-load capacity-regulating vegetable insulating oil transformer of the present invention, the current transformer 400 is arranged in the control cabinet 4 to automatically detect the output current of the transformer, and can effectively protect the current transformer 400 from being damaged by touch, the intelligent controller 402 is connected with the current transformer 400 and the on-load capacity-regulating tap switch 5, the number of branch joints of the on-load capacity-regulating tap switch 5 is not less than 6 (such as joints 0, x1, x2, x3, x4 and x5 in fig. 7), the coils on the high voltage side of the winding are in triangular connection or in star connection, when the automatic on-load capacity-regulating tap transformer works, the intelligent controller 402 monitors the output current data of the transformer in real time through the current transformer 400, and automatically regulates the capacity of the transformer through controlling the on-load capacity-regulating tap switch 5, when the electric demand of a user is large, the intelligent controller 402 controls the on-load capacity-regulating tap switch 5 to make the winding on the high voltage side of the transformer in triangular connection as shown in fig. 7, i.e. the high voltage side of the winding has a low voltage tap, i.e. the high voltage tap of the transformer has a phase difference of 30 ° and a low voltage tap, and a phase difference of the high voltage tap is in the order of the method of 11 is rated at the phase of 30; when the electricity consumption requirement of the user is smaller, the intelligent controller 402 controls the on-load capacity-regulating voltage-regulating tapping switch 5 to enable the winding high-voltage side of the transformer to be in star connection, as shown in fig. 8, the low-voltage side is in star connection and is provided with a neutral wire tap, the high-voltage side and the low-voltage side are not out of phase, namely Yyn0 is connected, the capacity of the transformer is reduced at the moment, the electricity consumption requirement of the user is met, no-load loss of the transformer is reduced, energy sources are saved, normal electricity consumption of the user is guaranteed, capacity and voltage regulation are automatically achieved, labor is saved, and because the oil tank body 100 is filled with plant insulating oil (the kinematic viscosity of the plant insulating oil is less than 35 square millimeters per second at the temperature of 40 ℃), the transformer can be effectively cooled, and because the oil tank body 100 is provided with the corrugated sheet 101, the plant insulating oil is cooled through the corrugated sheet 101, the expansion and contraction of the corrugated sheet 101 can prevent the plant insulating oil from damaging the transformer body 1 due to thermal expansion, thereby playing the role of protecting the transformer, and the fixing rod is arranged between the tail ends of the corrugated sheet, and displacement is prevented from being generated due to the contraction and expansion.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. An amorphous alloy on-load capacity-regulating vegetable insulating oil transformer is characterized in that: the transformer comprises a transformer body (1), a high-voltage insulating sleeve (2), a low-voltage insulating sleeve (3), a control cabinet (4) and an on-load capacity-regulating and voltage-regulating tapping switch (5), wherein the transformer body (1) comprises an oil tank body (100), an oil tank cover (200), a clamping piece (108), an amorphous alloy core (106) and a winding (107) wound on the amorphous alloy core (106), the electromagnetic density of the amorphous alloy core (106) is selected to be between 1.3 and 1.35, the amorphous alloy core (106) and the winding wound on the amorphous alloy core (106) are fixed through the clamping piece (108) and soaked in the oil tank body (100) filled with plant insulating oil, the kinematic viscosity is less than 35 square millimeters per second when the temperature of the plant insulating oil is 40 ℃, the oil tank cover (200) is in sealing connection with the top opening of the oil tank body (100), the high-voltage insulating sleeve (2) and the low-voltage insulating sleeve (3) are fixed on the oil tank cover (200) in parallel, the high-voltage insulating sleeve (2) and the winding (106) extend from the oil tank cover (100) to the primary winding (200) from one end of the winding (100) to the other end of the primary winding (100), one end of the low-voltage insulating sleeve (3) stretches into the oil tank body (100) from the oil tank cover (200) and is electrically connected with a primary coil lead wire of the winding (107), the other end of the low-voltage insulating sleeve (3) stretches out upwards from the surface of the oil tank cover (200), so that a secondary coil lead wire end of the winding (107) is led out from the oil tank body (100), the control cabinet (4) is arranged on one lateral side of the oil tank body (100), a current transformer (400) and an intelligent controller (402) are arranged in the control cabinet (4), the primary coil lead wire of the winding (107) penetrates through a through hole of the current transformer (400), the intelligent controller (402) is connected with the current transformer (400) and an on-load capacity-regulating voltage-regulating tap-changer (5) respectively, and the on-load capacity-regulating tap-changer (5) is arranged on the oil tank cover (200) in a sealing mode and is electrically connected with the winding (107).
2. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 1, wherein: the primary coil of the winding (107) is divided into a first section and a second section, the distance between the first section and the second section is not less than 6mm, the number of branch joints of the on-load capacity-regulating voltage-regulating tap-changer (5) is not less than 6, an oil duct (1070) extending along the winding direction is arranged in a gap between the secondary coil of the winding (107) and/or the primary coil of the winding (107), the caliber of the oil duct (1070) is not less than 4mm, 6 lead heads are led out of each section of primary coil, and the lead heads of the primary wire are connected with the on-load capacity-regulating voltage-regulating tap-changer (5) to realize serial-parallel conversion between two sections of low-voltage coils; the high-voltage coil is led out with 6 lead heads, and the lead heads of the high-voltage coil are connected with a load capacity-regulating voltage-regulating tapping switch (5) to realize Y/D connection conversion and tapping gear regulation among the three-phase high-voltage coils.
3. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 1, wherein: the low-voltage insulating sleeve (3) is fixed on one lateral side of the oil tank body (100), the control cabinet (4) and the low-voltage insulating sleeve (3) are arranged on the same side of the oil tank body (100), and the end head of the secondary coil lead is arranged in the control cabinet (4).
4. An amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 1 or 3, characterized in that: still be provided with cable clamp (401) in switch board (4), current transformer (400) are provided with three, current transformer (400) are installed in the below of the secondary coil lead end of winding, and are one-to-one with the three-phase lead wire of the secondary coil of winding, cable clamp (401) are provided with four, cable clamp (401) are installed in the below of current transformer (400), and this cable clamp (401) are one-to-one with the lead wire of the secondary coil of winding.
5. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 3, the method is characterized in that: three sides of the oil tank body (100) are respectively provided with a plurality of corrugated sheets (101) which are mutually vertical and parallel and are hollow and flat, and the corrugated sheets (101) of each side are communicated with the inside of the oil tank body (100); fixing rods (102) are transversely arranged at the upper end and the lower end of the corrugated sheet (101), and the fixing rods (102) are fixedly connected with the corrugated sheet (101).
6. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 5, wherein: the fixing rods (102) are connected in series between adjacent corrugated sheets (101).
7. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 1, wherein: the clamping piece (108) and the amorphous alloy core body are provided with insulating rubber gaskets, the clamping piece (108) comprises an upper fixing portion (108 a), a lower fixing portion (108 b) and a plurality of clamping portions (108 c) which are vertically and parallelly fixed between the upper fixing portion (108 a) and the lower fixing portion, annular grooves (108 d) are formed in the clamping portions (108 c), and through holes (108 e) and clamping interfaces (108 f) are respectively formed in the centers and edges of the upper fixing portion (108 a) and the lower fixing portion (108 b).
8. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 1, wherein: the transformer further comprises an oil level gauge (6) and a mercury thermometer (7), and the oil level gauge (6) and the mercury thermometer (7) are respectively and fixedly arranged at two ends of the upper front side of the oil tank cover (200).
9. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 8, wherein: the novel oil tank is characterized in that a manhole (201) and lifting rings (202) are further arranged on the oil tank cover (200), the manhole (201) is square, and at least four lifting rings (202) are arranged.
10. The amorphous alloy on-load capacity-regulating vegetable insulating oil transformer according to claim 1, wherein: the high-voltage-side coils of the winding (107) are connected in a delta-shaped or star-shaped manner.
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CN104575996A (en) * 2014-12-12 2015-04-29 湖南德沃普电气股份有限公司 On-load capacity-regulating and voltage-regulating power transformer
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