CN114927330A

CN114927330A - Insulating bin type low-power consumption high-voltage transformer

Info

Publication number: CN114927330A
Application number: CN202210163847.6A
Authority: CN
Inventors: 王欢; 刘朝辉; 卓京水
Original assignee: Anhui Jinrui Electric Co ltd
Current assignee: Anhui Jinrui Electric Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-08-19

Abstract

An insulation bin type low-power-consumption high-voltage transformer comprises a high-voltage bin body, a conductor and a lead shielding tube covering a composite sleeve, wherein the lead shielding tube extends into the high-voltage bin body; the voltage-sharing capacitor and the voltage-dividing capacitor are connected in series to form a capacitive voltage divider, the capacitive voltage divider is connected with an outgoing line through a lead shielding tube and used for achieving the function of a voltage transformer, and/or a coil is sleeved outside the insulating core and used for achieving the function of a current transformer through the lead shielding tube outgoing line; the remaining space in the high-pressure bin body is filled with the colloidal insulating material, so that the high-pressure bin has the advantages of small volume, low power consumption, no air or oil and convenience in maintenance.

Description

Insulating bin type low-power consumption high-voltage transformer

Technical Field

The invention relates to the field of high-voltage electric appliances, in particular to an insulation bin type low-power-consumption high-voltage transformer.

Background

The voltage transformer and the current transformer in the existing gas insulated totally-enclosed combined electrical apparatus (GIS for short) are generally arranged respectively, and are provided with independent gas bins, so that the equipment has the advantages of large volume, more gas consumption, low cost performance and inconvenient maintenance; for example, the coil of the independent current transformer is sleeved outside the conductor, and the coil and the conductor must keep a larger interval due to high voltage, so that the volume is large, the power consumption is high, the diameter of the independent gas cabin is greatly increased, the cost is high, and the occupied area is large. For example, as shown in fig. 1, in journal "design of insulating structure of 126KV composite bushing SF6 current transformer", a stand-alone SF6 current transformer is disclosed, which requires filling SF in a shell and a composite bushing ₆ The transformer is gas and inconvenient to maintain, and the secondary winding of the transformer has to keep larger space with the conductor, has larger volume and does not have the function of a voltage transformer.

Disclosure of Invention

The invention aims to overcome at least one defect of the prior art and provides an insulation chamber type low-power consumption high-voltage transformer.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides an insulation bin type low-power-consumption high-voltage transformer which is used as a voltage transformer and comprises a high-voltage bin body, a conductor and a lead shielding tube covering a composite sleeve, wherein the lead shielding tube extends into the high-voltage bin body; the voltage-sharing capacitor and the voltage-dividing capacitor are connected in series to form a capacitive voltage divider, and the capacitive voltage divider is connected with an outgoing line through a lead shielding pipe and used for realizing the function of a voltage transformer; and the rest space in the high-pressure cabin body is filled with a colloidal insulating material.

The invention also provides an insulation bin type low-power-consumption high-voltage transformer which is used as a current transformer and comprises a high-voltage bin body, a conductor and a lead shielding tube for wrapping a composite sleeve, wherein the lead shielding tube extends into the high-voltage bin body; and the rest space in the high-pressure cabin body is filled with a colloidal insulating material.

The invention also provides an insulation bin type low-power-consumption high-voltage transformer which is used as a current-voltage transformer and comprises a high-voltage bin body, a conductor and a lead shielding pipe covering a composite sleeve, wherein the lead shielding pipe extends into the high-voltage bin body; the voltage-sharing capacitor and the voltage-dividing capacitor are connected in series to form a capacitive voltage divider, and the capacitive voltage divider is connected with an outgoing line through a lead shielding tube and used for realizing the function of a voltage transformer; a coil is sleeved outside the insulating core body and connected with an outgoing line through a lead shielding tube to realize the function of a current transformer; and the rest space in the high-pressure bin body is filled with a colloidal insulating material.

Preferably, the gelatinous insulating material keeps gelatinous at normal temperature, or is cured into an elastic insulating material with elasticity at normal temperature.

Preferably, the composite bushing is a capacitive bushing and comprises a capacitive insulating core body sleeved outside the lead shielding pipe, a plurality of second capacitive screens alternately arranged around the insulating layer are arranged in the capacitive insulating core body, and an insulating sheath is sleeved outside the capacitive insulating core body.

Preferably, the grounded capacitance screen forms a ground potential on the surface of the insulating core, and an air-core coil is arranged on the outer side of the ground potential of the insulating core in a close contact manner to serve as the coil.

Preferably, the innermost capacitive screen of the insulating core body close to the conductor is a high-voltage capacitive screen, the innermost second capacitive screen of the capacitive insulating core body close to the lead shielding tube is grounded, and the outermost second capacitive screen is connected with high voltage.

Preferably, two ends of the conductor extend out of two sides of the high-voltage cabin body or are electrically connected with wiring terminals on two sides of the high-voltage cabin body and are used for being connected to a high-voltage circuit.

Preferably, one end of the lead shielding tube coated with the composite sleeve extends into the high-pressure cabin body from the bottom side of the high-pressure cabin body, and the other end of the lead shielding tube is arranged on the base.

Preferably, the base is provided with a secondary terminal or secondary equipment, and the outgoing line is connected with the secondary terminal or the secondary equipment; and/or the grounding wire of the grounding capacitance screen is connected with the base through a lead shielding pipe.

Preferably, the plurality of capacitive screens further include a plurality of shielding capacitive screens forming shielding anti-interference capacitors, the plurality of shielding capacitive screens are mutually overlapped and insulated from one end of the insulating core to the other end of the insulating core along the axial direction of the insulating core, and the shielding capacitive screens are radially wrapped outside the voltage-sharing capacitors and the voltage-dividing capacitors.

Preferably, the plurality of capacitive screens further comprise an insulation information capacitive screen forming an insulation information acquisition capacitor, and a third outgoing line is connected to the insulation information capacitive screen through a lead shielding pipe and used for realizing online monitoring of insulation information.

Preferably, the insulation information capacitance screen is arranged between a voltage-sharing capacitance screen and a voltage-dividing capacitance screen, the voltage-sharing capacitance screen and the voltage-dividing capacitance screen are connected in series, the insulation information acquisition capacitance is connected in series between the voltage-sharing capacitance and the voltage-dividing capacitance, the voltage-sharing capacitance, the insulation information acquisition capacitance and the voltage-dividing capacitance after being connected in series are connected in parallel with the shielding anti-interference capacitance, and the third outgoing line is led out from between the voltage-sharing capacitance and the insulation information acquisition capacitance.

Preferably, the insulation information capacitance screen is arranged between a shielding capacitance screen and a grounding capacitance screen which form a shielding anti-interference capacitor, two ends of the shielding anti-interference capacitor and the insulation information acquisition capacitor which are connected in series are connected in parallel at two ends of the voltage-sharing capacitor and the voltage-dividing capacitor which are connected in series, and a third outgoing line is led out from between the shielding anti-interference capacitor and the insulation information acquisition capacitor.

Preferably, the insulating core body uses glass filaments soaked in epoxy resin as an insulating layer, a semi-conducting belt or a metal belt as a capacitive screen, and the insulating layer and the capacitive screen are alternately wound on the conductor to form the insulating core body.

Preferably, the capacitive insulating core body adopts glass filaments soaked with epoxy resin as an insulating layer, a semi-conductive belt or a metal belt as a second capacitive screen, and the insulating layer and the second capacitive screen are alternately wound on the lead shielding tube to form the capacitive insulating core body; the insulating sheath is an insulating umbrella skirt.

According to the insulating bin type low-power-consumption high-voltage transformer, an insulating core body is coated outside a conductor, voltage is gradually divided and insulated through a voltage-sharing capacitor screen, a ground potential is formed on the surface of the insulating core body through a grounding capacitor screen, a voltage signal between the voltage-sharing capacitor screen and the voltage-dividing capacitor screen is led out of the insulating core body through a first outgoing line and serves as a signal source of the voltage transformer, and the capacitive type inductive voltage transformer basically does not need power consumption or power consumption can be ignored; and/or a coil is arranged on the outer side of the ground potential of the insulating core body in a clinging manner, a second outgoing line is connected out of the coil to serve as a signal source of the current transformer, and the hollow coil can be sleeved on the outer side of the ground potential of the insulating core body in a clinging manner, so that the overall diameter is greatly reduced; and the high-pressure bin body is filled with the colloidal insulating material for insulation, so that the high-pressure bin body is free of air and oil, convenient to maintain and low in cost.

In addition, because the ground potential is realized in the high-voltage cabin body through the insulating core body, an electronic hollow coil with low power can be arranged, the size is greatly reduced, the size and the weight are only one tenth of those of the traditional ferromagnetic coil, and the appearance of the whole insulating cabin is small.

Drawings

Fig. 1 is a cross-sectional view of a stand-alone SF6 current transformer of the prior art;

FIG. 2 is a front cross-sectional view of an embodiment of the insulation chamber type low power consumption high voltage transformer of the present invention;

FIG. 3 is a partial cross-sectional view of an embodiment of the inventive conductor jacket with an insulating core;

FIG. 4 is a schematic circuit diagram of a first embodiment of the insulating core of the present invention;

fig. 5 is a schematic circuit diagram of a second embodiment of the insulating core of the present invention.

Detailed Description

The following embodiments are given in conjunction with the accompanying drawings to further describe the specific implementation of the insulation-bin-type low-power-consumption high-voltage transformer created by the present invention. The insulated bin type low power consumption high voltage transformer created by the present invention is not limited to the description of the following embodiments.

The insulating bin type low-power-consumption high-voltage transformer comprises a high-voltage bin body 1, a conductor 3 and a lead shielding tube 6 covering a composite sleeve 7, wherein the lead shielding tube 6 extends into the high-voltage bin body 1, an insulating core body 2 is arranged in the high-voltage bin body 1, the insulating core body 2 covers the conductor 3, a plurality of capacitive screens 8 which are alternately arranged with insulating layers in a surrounding mode are arranged in the insulating core body 2, and the capacitive screens 8 comprise voltage-sharing capacitive screens 83 forming voltage-sharing capacitors C1 and grounding capacitive screens 82 far away from the outermost side of the conductor 3; the capacitive screens 8 further comprise a voltage-dividing capacitive screen 84 forming a voltage-dividing capacitor C2, wherein a voltage-sharing capacitor C1 and a voltage-dividing capacitor C2 are connected in series to form a capacitive voltage divider, and the capacitive voltage divider is connected with a first outgoing line through a lead shielding tube 6 and used for realizing the function of a voltage transformer, and/or a coil 4 is sleeved outside the insulating core 2, and the coil 4 is connected with a second outgoing line through the lead shielding tube 6 and used for realizing the function of a current transformer; the high-pressure bin body 1 is filled with a colloidal insulating material.

As shown in fig. 2, the insulation chamber type low power consumption high voltage transformer of this embodiment includes a high voltage chamber 1, a conductor 3 is arranged in the high voltage chamber 1, two ends of the conductor 3 extend out from two sides of the high voltage chamber 1 or are electrically connected with connecting terminals on two sides of the high voltage chamber 1 for being connected to a high voltage circuit, the high voltage chamber 1 and the conductor 3 are equipotential high voltage, it is difficult to set a current transformer or a voltage transformer therein to monitor the current or voltage signal of the high voltage circuit, the current transformer or the voltage transformer is large in volume due to the need of a large insulation distance, occupies a large space, is usually an independent current transformer and a voltage transformer, and has large power consumption and is not beneficial to energy saving and emission reduction.

As shown in fig. 2, an insulating core 2 is disposed in the high voltage cabin 1 of the present embodiment, the insulating core 2 is coated on the conductor 3, the insulating core 2 forms a ground potential, a coil 4 is sleeved outside the ground potential, and the coil 4 is connected to a second outgoing line as a signal source of the current transformer for realizing the function of the current transformer.

A plurality of capacitive screens 8 which are alternately arranged with the insulating layers are arranged in the insulating core body 2, and the capacitive screens 8 are respectively a voltage-sharing capacitive screen 83, a voltage-dividing capacitive screen 84 and a grounding capacitive screen 82 from the inner side to the outer side of the insulating core body 2 close to the conductor. The innermost one of the voltage-sharing capacitive screens 83 is a high-voltage capacitive screen 81, the high-voltage capacitive screen 81 is electrically connected with the conductor 3 to have the same potential, the voltage-sharing capacitors C1 are formed by alternately surrounding the voltage-sharing capacitive screens 83 and insulating layers, and the voltage-sharing capacitive screens 83 divide and insulate the high voltage gradually in the radial direction to play an insulating role; preferably, both ends of the plurality of voltage-sharing capacitance screens 83 are gradually shortened from the inner side to the outer side of the insulating core body 2, and the plurality of voltage-sharing capacitance screens 83 are arranged coaxially and concentrically.

The voltage-dividing capacitive screen 84 is located between the voltage-dividing capacitive screens 83 and the grounded capacitive screen 82, the voltage-dividing capacitive screen 84 can be one or more, one voltage-dividing capacitive screen 84 and the grounded capacitive screen 82 form a voltage-dividing capacitor C2 or the voltage-dividing capacitive screens 84 form a voltage-dividing capacitor C2, the voltage-dividing capacitor C1 and the voltage-dividing capacitor C2 are connected in series to form a capacitive voltage divider, a first outgoing line is connected between the voltage-dividing capacitor C1 and the voltage-dividing capacitor C2 to serve as a signal source of the voltage transformer, and the voltage-dividing capacitive screen is used for achieving the function of the voltage transformer.

The lead shielding tube 6 is sleeved with the composite sleeve 7, one end of the lead shielding tube 6 covering the composite sleeve 7 extends into the high-voltage cabin body 1 from the bottom side of the high-voltage cabin body 1 and abuts against the insulating core body 2 or the coil 4 (no supporting insulator is arranged), and the other end can be arranged on a base (not shown in the figure) or the other end is directly arranged on the ground; first lead-out wire and coil 4's second lead-out wire of capacitive voltage divider connect out through lead wire shielding tube 6 for be connected with low pressure secondary equipment, be equipped with secondary terminal or secondary equipment on the base, each lead-out wire such as first lead-out wire, second lead-out wire can be connected with secondary terminal or secondary equipment, and secondary equipment also can not set up on the base, but sets up in the monitor, grounded capacitance screen 82's earth connection also connects out through lead wire shielding tube 6, can connect and be used for ground connection on the base. Of course, the joint of the composite sleeve 7 and the high-pressure cabin body 1 needs to be sealed. The composite bushing 7 provides an insulation distance between the high-voltage cabin body 1 with high potential, the conductor 3 and a base of ground potential.

Preferably, the composite bushing 7 is a capacitive bushing, and includes a capacitive insulating core 71, the capacitive insulating core 71 is sleeved outside the lead shielding tube 6, a plurality of second capacitive screens 73 alternately surrounding with the insulating layer are disposed in the capacitive insulating core 71, an insulating sheath 72 is sleeved outside the capacitive insulating core 71, and the insulating sheath 72 is an insulating shed, preferably a silicon rubber insulating shed. The composite bushing 7 of the embodiment adopts a capacitive bushing to improve the insulating property without filling SF ₆ Gas and significantly reduced in size. Of course, as a deterioration example, the composite bushing 7 may also be an existing high-voltage composite bushing as shown in fig. 1.

Preferably, unlike the insulating core 2 in which the innermost capacitive screen close to the conductor 3 is the high-voltage capacitive screen 81 and the outermost capacitive screen 82 is the grounded capacitive screen, the innermost second capacitive screen 73 of the plurality of second capacitive screens 73 of the capacitive insulating core 71 close to the lead shielding tube 6 is grounded, and the outermost second capacitive screen 73 is connected to a high voltage and has the same potential as the high-voltage cabin 1. The capacitor-type insulating core 71 plays a role in insulating the outer high voltage from the inner lead shielding tube 6 in the radial direction thereof, and plays a role in insulating the top high voltage from the bottom base in the axial direction thereof.

At the intussuseption of high-pressure storehouse body 1 intussuseption gelatinous insulating material, through filling into gelatinous insulating material and being full of high-pressure storehouse body 1 whole space, cladding insulating core 2 and coil 4 to avoid having the clearance. Colloidal insulating material indicates and is similar to the thick fluid of latex, toothpaste, honey form, makes it can be full of 1 whole spaces in the high-pressure storehouse body, avoids having the clearance, colloidal insulating material keeps colloidal under the normal atmospheric temperature, perhaps solidifies under the normal atmospheric temperature for having elastic insulating material (modes such as heating can become colloidal). If the colloidal insulating material can be cured, the colloidal elastic insulating material with elasticity after curing is preferably adopted to effectively avoid generating gaps, and the hard insulating material after curing can also have relatively poor effect and is easy to generate gaps. The colloidal insulating material can be two-component silicone grease gel, thick silicone oil, an Ennigil insulating filling compound or silicone rubber and the like. Of course, other insulating materials having a good insulating effect suitable for high voltages may be used.

According to the insulating bin type low-power-consumption high-voltage transformer, the insulating core body 2 is coated outside the conductor 3, voltage is gradually divided and insulated through the voltage-sharing capacitance screen 83, the ground potential is formed on the surface of the insulating core body 2 through the grounding capacitance screen 82, a voltage signal between the voltage-sharing capacitance screen 83 and the voltage-sharing capacitance screen 84 is led out in the insulating core body 2 through the first leading-out wire and serves as a signal source of the voltage transformer, and the capacitive type induction voltage transformer basically does not need power consumption or power consumption can be ignored; and/or an air coil is arranged on the outer side of the ground potential of the insulating core body in a clinging mode to serve as the coil 4, a second outgoing line of the air coil is connected out to serve as a signal source of the current transformer, and the air coil can be sleeved on the outer side of the ground potential of the insulating core body in a clinging mode, so that the overall diameter is greatly reduced. And because the ground potential is realized in the high-voltage cabin body 1 through the insulating core body 2, an electronic hollow coil with low power can be arranged, so that the volume is greatly reduced, the volume and the weight are only one tenth of those of the traditional ferromagnetic coil, and the appearance of the whole insulating cabin is smaller. Of course, as an alternative embodiment, a ferromagnetic coil can also be used as the coil 4.

This embodiment is through adopting a plurality of voltage-sharing capacitive screens 83 of insulating core 2 to step down the insulation one by one, forms the ground potential between these two high pressures of the high-voltage storehouse body 1 and conductor 3, improves its axial and radial electric field distribution, shortens axial length, reduces radial size through the voltage-sharing capacitive screen of insulating core 2, and then realizes current transformer and voltage transformer's function simultaneously under the minimum condition of guaranteeing the high-voltage storehouse body 1 volume. Particularly, as the coil 4 is sleeved on the ground potential of the insulating core body 2, the insulating bin type low-power-consumption mutual inductor of the embodiment can omit a supporting insulator in the traditional mutual inductor (figure 1); of course, as a variant embodiment, it is also possible to provide a support insulator additionally.

It should be noted that the insulation chamber type low power consumption transformer of the present embodiment is a current-voltage transformer, and has functions of a current transformer and a voltage transformer at the same time. Of course, the coil 4 may not be provided as required, and only a voltage transformer is implemented, that is, the insulation bin type low power consumption transformer is only used as a voltage transformer; the voltage dividing capacitor C2 is not provided, and only a current transformer is realized, that is, the insulation bin type low-power-consumption transformer is only used as a current transformer.

Preferably, as shown in fig. 3 to 5, as another preferred embodiment, the plurality of capacitive screens 8 further includes a plurality of shielding capacitive screens 85 forming a shielding anti-interference capacitor C3, the plurality of shielding capacitive screens 85 are located between the high-voltage capacitive screen 81 and the ground capacitive screen 82, the plurality of shielding capacitive screens 85 are overlapped and insulated from each other from one end of the insulating core 2 to the other end of the insulating core 2 along the axial direction of the insulating core 2, and are radially wrapped outside the voltage-sharing capacitor C1 and the voltage-dividing capacitor C2 to shield external signal interference. The innermost connecting conductor 3 of the shielding capacitor screens 85 is high voltage, the outermost grounding potential, and two ends of the shielding anti-interference capacitor C3 are connected in parallel to two ends of the voltage-sharing capacitor C1 and the voltage-dividing capacitor C2 which are connected in series, so as to shield the interference of external interference signals on the signal source collected by the capacitor voltage divider and improve the signal collection precision.

Preferably, the plurality of capacitive screens 8 further include an insulating information capacitive screen 86 forming an insulating information collecting capacitor C4, a third outgoing line is connected from the insulating information capacitive screen 86 through the lead shielding tube 6, and is used for outputting a signal source to realize online monitoring of the insulating information of the insulating core 2, and signals output by the first outgoing line and the third outgoing line can realize online monitoring of one or more of the insulating information such as dielectric loss, capacitance, full current, capacitive current, resistive current, and the like.

In one embodiment as shown in fig. 4, the insulating information capacitive screen 86 is disposed between the voltage-sharing capacitive screen 83 constituting the voltage-sharing capacitor C1 and the voltage-dividing capacitive screen 84 constituting the voltage-dividing capacitor C2, the insulating information collecting capacitor C4 is connected in series between the voltage-sharing capacitor C1 and the voltage-dividing capacitor C2, the voltage-sharing capacitor C1, the insulating information collecting capacitor C4 and the voltage-dividing capacitor C2 which are connected in series are connected in parallel with the shielding anti-interference capacitor C3, the third outgoing line is led out from between the voltage-sharing capacitor C1 and the insulating information collecting capacitor C4, and the first outgoing line is led out from between the insulating information collecting capacitor C4 and the voltage-dividing capacitor C2.

In another embodiment as shown in fig. 5, the insulating information capacitive screen 86 is disposed between a shielding capacitive screen 85 and a grounded capacitive screen 82 which form a shielding anti-interference capacitor C3, two ends of the shielding anti-interference capacitor C3 and an insulating information collecting capacitor C4 which are connected in series are connected in parallel to two ends of a voltage-sharing capacitor C1 and a voltage-dividing capacitor C2 which are connected in series, a third lead-out wire is led out from between the shielding anti-interference capacitor C3 and the insulating information collecting capacitor C4, and a first lead-out wire is led out from between the voltage-sharing capacitor C1 and the voltage-dividing capacitor C2.

In the insulating core 2 of the present embodiment, a glass filament impregnated with epoxy resin is used as an insulating layer, a semi-conductive tape or a metal tape is used as a capacitive screen 8, and the insulating layer and the capacitive screen are alternately wound around a conductor 3 to form a sleeve-shaped insulating core 2.

The capacitive insulating core 71 of the present embodiment also uses glass filaments impregnated with epoxy resin as an insulating layer, a semi-conductive tape or a metal tape as a second capacitive screen 73, and the insulating layer and the second capacitive screen 73 are alternately wound on the lead shielding tube 6 to form the capacitive insulating core 71, which not only does not need to be filled with any insulating substance, but also has mechanical strength superior to that of a knob insulator.

The insulating bin type low-power-consumption high-voltage transformer is used for being connected in a high-voltage circuit, is suitable for being used for high voltages above 10KV and 10KV, is particularly suitable for high voltages above 110KV and 110KV, can be installed at any position of the high-voltage circuit, is used for realizing the functions of a current transformer and a voltage transformer, realizes online monitoring of each position of the high-voltage circuit, and can reduce the size of equipment, simplify the structure of the equipment, facilitate overhauling and maintenance and reduce the cost of the equipment compared with the existing independent voltage transformer and current transformer.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.

Claims

1. The utility model provides an insulating storehouse formula low-power consumption high voltage transformer, includes that lead wire shielding tube (6) of the high-pressure storehouse body (1), conductor (3) and cladding composite bushing (7) stretch into in the high-pressure storehouse body (1), its characterized in that: an insulating core body (2) is arranged in the high-voltage bin body (1), the insulating core body (2) is coated on the conductor (3), a plurality of capacitive screens (8) which are alternately arranged with the insulating layers in a surrounding way are arranged in the insulating core body (2),

the capacitive screens (8) comprise voltage-sharing capacitive screens (83) forming voltage-sharing capacitors (C1), voltage-dividing capacitive screens (84) forming voltage-dividing capacitors (C2) and outermost grounded capacitive screens (82) far away from the conductor (3); the voltage-sharing capacitor (C1) and the voltage-dividing capacitor (C2) are connected in series to form a capacitive voltage divider, and the capacitive voltage divider is connected with an outgoing line through a lead shielding tube (6) and used for realizing the function of a voltage transformer;

the rest space in the high-pressure cabin body (1) is filled with colloidal insulating material.

2. The utility model provides an insulating storehouse formula low-power consumption high voltage transformer, includes that lead wire shielding tube (6) of the high-pressure storehouse body (1), conductor (3) and cladding composite bushing (7) stretch into in the high-pressure storehouse body (1), its characterized in that: an insulating core body (2) is arranged in the high-voltage cabin body (1), the insulating core body (2) is coated on the conductor (3), a plurality of capacitance screens (8) which are alternately arranged with the insulating layer in a surrounding way are arranged in the insulating core body (2),

the capacitive screens (8) comprise voltage-sharing capacitive screens (83) forming voltage-sharing capacitors (C1) and grounded capacitive screens (82) far away from the outermost sides of the conductors (3), coils (4) are sleeved outside the insulating core body (2), and the coils (4) are led out through lead shielding tubes (6) and used for achieving the function of a current transformer;

3. The utility model provides an insulating storehouse formula low-power consumption high voltage transformer, includes that lead wire shielding tube (6) of the high-pressure storehouse body (1), conductor (3) and cladding composite bushing (7) stretch into in the high-pressure storehouse body (1), its characterized in that: an insulating core body (2) is arranged in the high-voltage bin body (1), the insulating core body (2) is coated on the conductor (3), a plurality of capacitive screens (8) which are alternately arranged with the insulating layers in a surrounding way are arranged in the insulating core body (2),

a coil (4) is sleeved outside the insulating core body (2), and the coil (4) is connected with an outgoing line through a lead shielding tube (6) and used for realizing the function of a current transformer;

4. The insulated bin type low power consumption high voltage transformer according to any one of claims 1 to 3, wherein: the colloidal insulating material can be kept colloidal at normal temperature, or can be solidified into an elastic insulating material with elasticity at normal temperature.

5. The insulated bin type low-power-consumption high-voltage transformer according to any one of claims 1 to 3, characterized in that: the composite sleeve (7) is a capacitive type sleeve and comprises a capacitive type insulating core body (71) sleeved outside the lead shielding tube (6), a plurality of second capacitive screens (73) alternately arranged with insulating layers in a surrounding mode are arranged in the capacitive type insulating core body (71), and an insulating sheath (72) is sleeved outside the capacitive type insulating core body (71).

6. The insulation chamber type low-power consumption high-voltage transformer according to claim 2 or 3, characterized in that: the grounding capacitance screen (82) forms ground potential on the surface of the insulating core body (2), and an air-core coil is arranged on the outer side of the ground potential of the insulating core body (2) in a clinging mode to serve as the coil (4).

7. The insulation chamber type low-power-consumption high-voltage transformer of claim 5, wherein: the innermost capacitance screen close to the conductor (3) in the insulation core body (2) is a high-voltage capacitance screen (81), the innermost second capacitance screen (73) close to the lead shielding tube (6) in the capacitance type insulation core body (71) is grounded, and the outermost second capacitance screen (73) is connected with high voltage.

8. The insulated bin type low power consumption high voltage transformer according to any one of claims 1 to 3, wherein: two ends of the conductor (3) extend out of two sides of the high-voltage cabin body (1) or are electrically connected with wiring terminals on two sides of the high-voltage cabin body (1) and are used for being connected into a high-voltage circuit.

9. The insulated bin type low-power-consumption high-voltage transformer according to any one of claims 1 to 3, characterized in that: one end of a lead shielding tube (6) coated with the composite sleeve (7) extends into the high-pressure cabin body (1) from the bottom side of the high-pressure cabin body (1), and the other end is arranged on the base.

10. The insulated bin type low power consumption high voltage transformer according to claim 9, wherein: the base is provided with a secondary terminal or secondary equipment, and the outgoing line is connected with the secondary terminal or the secondary equipment; and/or the grounding wire of the grounding capacitance screen (82) is connected with the base through a lead shielding tube (6).