10kV current type PT power taking device

Abstract

The utility model discloses a 10kV current type PT power taking device, which comprises a silicon rubber case, an epoxy pouring body is arranged in the silicon rubber case, a high-voltage capacitor is arranged at the upper part of an inner cavity of the silicon rubber case, a connecting insert is arranged at the top of the silicon rubber case, and an epoxy resin plate is connected to the bottom of the silicon rubber case. The bottom of the inner cavity of the silica gel sleeve is provided with an annular transformer, and the bottom of the inner cavity of the epoxy pouring body is provided with sealing glue. According to the 10kV current type PT electricity taking device, the working principle that the high-voltage capacitor and the industrial frequency transformer are connected in series is adopted, the high-voltage capacitor is used for reducing voltage and limiting current, the transformer is used for isolating and converting required output voltage and power, inputting 10kV system phase voltage and outputting 27V / 10W, and the 10kV current type PT electricity taking device is matched with a pole-mounted switch for use, provides a power supply for FTU, and is convenient to install and fix; the possibility of short circuit and ferromagnetic resonance is reduced, the power conversion efficiency is high, and the production process is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power taking device technical field, concretely is a 10kV current type PT power taking device. BACKGROUND

[0002] 10kV power grid power taking device is used for obtaining electric energy from 10kV power system, they play an important role in electric power monitoring, protection, inspection and so on, and are suitable for 10kV intelligent high voltage distribution cabinet, switch cabinet, are used for monitoring the stability of power grid, simultaneously, also be suitable for 10kV transmission and transformation line's pole-mounted switch, zero sequence protection and measurement voltage sensor, are used for the accurate determination of grounding fault direction.

[0003] In prior art, traditional 10kV power grid power taking device adopts electromagnetic voltage transformer to take power, is mostly bulky, is inconvenient to install and fix, and is prone to short circuit and ferromagnetic resonance and other phenomena, and the device that adopts electric capacity to take power is the scheme that high voltage capacitor and power frequency transformer are designed separately, to achieve the required power, the transformer is generally in the form of multiple square (E) transformers in series and is arranged in a square shell, and then is assembled and integrated with the insulator of built-in capacitor, and there is low power conversion efficiency and complex production process. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a 10kV current type PT power taking device, solves the problem that in prior art, traditional 10kV power grid power taking device adopts electromagnetic voltage transformer to take power, is mostly inconvenient to install and fix, and is prone to short circuit.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a 10kV current type PT power taking device, including silica gel cover, the inside of silica gel cover is provided with epoxy pouring body, the upper portion of silica gel cover inner chamber is provided with high voltage capacitor, the top of silica gel cover is provided with connecting insert;

[0006] The bottom of silica gel cover is connected with epoxy resin plate, the bottom of silica gel cover inner chamber is provided with annular transformer, the bottom of epoxy pouring body inner chamber is provided with sealing and potting glue, the annular transformer is electrically connected with high voltage capacitor, the second output cable that is electrically connected with annular transformer is set up on the epoxy resin plate.

[0007] Further, the top of silica gel cover is provided with the first insert that is electrically connected with high voltage capacitor.

[0008] Further, the top of annular transformer is provided with second insert.

[0009] Further, the third insert that is electrically connected with annular transformer is set up on the epoxy resin plate.

[0010] Further, the bottom of the epoxy pouring body is provided with a cylindrical hole, and the epoxy resin plate is provided with a positioning hole.

[0011] Further, the silica gel sleeve is a cylindrical body with size interval umbrella skirt.

[0012] Compared with the prior art, the beneficial effects of the utility model are that, by adopting the series working principle of high-voltage capacitor and power frequency transformer, the high-voltage capacitor is used for voltage reduction and current limiting, the transformer is used for isolation and conversion of required output voltage and power, the input 10kV system phase voltage is output 27V / 10W, and the device is used in combination with a pole switch, power is provided for the FTU, installation and fixation are facilitated, the possibility of short circuit and ferromagnetic resonance is reduced, power conversion efficiency is high, and the production process is simple. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front sectional view structural schematic diagram of the utility model;

[0014] Figure 2 It is a front view structural schematic diagram of the utility model.

[0015] In the drawing: 1, first insert; 2, silica gel sleeve; 3, high-voltage capacitor; 4, epoxy pouring body; 5, second insert; 6, annular transformer; 7, encapsulation glue; 8, epoxy resin plate; 9, third insert; 10, secondary output cable. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] Please refer to Figure 1 With Figure 2 The utility model provides a kind of technical scheme: a 10kV current type PT power taking device, including silica gel sleeve 2, epoxy pouring body 4 is provided in the inside of silica gel sleeve 2, high-voltage capacitor 3 is provided in the upper portion of silica gel sleeve 2 inner cavity, silica gel sleeve 2 is a cylindrical body with size interval umbrella skirt.

[0018] The bottom of silica gel sleeve 2 is connected with epoxy resin plate 8, annular transformer 6 is provided in the bottom of silica gel sleeve 2 inner cavity, encapsulation glue 7 is provided in the bottom of epoxy pouring body 4 inner cavity.

[0019] The annular transformer 6 is electrically connected with the high-voltage capacitor 3, and the epoxy resin plate 8 is provided with a secondary output cable 10 electrically connected with the annular transformer 6.

[0020] The high-voltage capacitor is used for voltage reduction and current limiting, and the transformer is used for isolation and conversion of required output voltage and power. The input is 10kV system phase voltage, the output is 27V / 10W, and the device is matched with a pole-mounted switch to provide power supply for the FTU, facilitate installation and fixation, reduce the possibility of short circuit and ferromagnetic resonance, and has high power conversion efficiency and simple production process.

[0021] Further, the top of the silica gel sleeve 2 is provided with a first insert 1 electrically connected with the high-voltage capacitor 3, and the first insert 1 facilitates electrical connection and ensures stable and reliable transmission of current and voltage between the device and the external power grid.

[0022] Further, the top of the annular transformer 6 is provided with a second insert 5, and the second insert 5 facilitates electrical connection between the annular transformer 6 and the high-voltage capacitor 3.

[0023] Further, the epoxy resin plate 8 is provided with a third insert 9 electrically connected with the annular transformer 6, and the top and bottom of the device are provided with high-voltage inserts, grounding inserts and installation and fixation inserts.

[0024] The annular transformer 6 is provided with a lightning protection device in the primary side and a load open circuit protection device in the secondary side (the load of the current source can be short-circuited and cannot be open-circuited).

[0025] Further, the bottom of the epoxy pouring body 4 is provided with a cylindrical hole, and the epoxy resin plate 8 is provided with a positioning hole.

[0026] The cylindrical hole is convenient for placing the annular transformer 6 and the transformer protection device, and the center positioning hole is convenient for positioning the secondary output cable 10, so as to ensure that the power supply cable is led out from the center of the bottom of the device to the load.

[0027] In operation, the point taking device adopts the series working principle of high-voltage capacitor and power frequency transformer, the high-voltage capacitor is used for voltage reduction and current limiting, and the transformer is used for isolation and conversion of required output voltage and power. The input is 10kV system phase voltage, the output is 27V / 10W, and the device is matched with a pole-mounted switch to provide power supply for the FTU, reduce the possibility of short circuit and ferromagnetic resonance, and has high power conversion efficiency.

[0028] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] The preferred embodiments of the present application have been described above with the preferred embodiments; however, all the changes and modifications that can be made without departing from the spirit and concept of the present application should be covered by the appended claims.

Claims

1. A 10kV current mode PT power taking device comprising a silica gel sleeve (2), characterized in that: The inside of the silica gel sleeve (2) is provided with an epoxy pouring body (4), and the upper part of the inner cavity of the silica gel sleeve (2) is provided with a high-voltage capacitor (3); The bottom of the silica gel sleeve (2) is connected with an epoxy resin plate (8), the bottom of the inner cavity of the silica gel sleeve (2) is provided with an annular transformer (6), the bottom of the inner cavity of the epoxy pouring body (4) is provided with a sealing and packing glue (7), the annular transformer (6) is electrically connected with the high-voltage capacitor (3), and the epoxy resin plate (8) is provided with a secondary output cable (10) electrically connected with the annular transformer (6).

2. The 10 kV current mode PT power taking device according to claim 1, characterized in that: The top of the silica gel sleeve (2) is provided with a first insert (1) electrically connected with the high-voltage capacitor (3).

3. The 10 kV current mode PT power taking device according to claim 1, characterized in that: The top of the annular transformer (6) is provided with a second insert (5).

4. The 10 kV current mode PT power taking device according to claim 1, characterized in that: The epoxy resin plate (8) is provided with a third insert (9) electrically connected with the annular transformer (6).

5. The 10 kV current mode PT power taking device according to claim 1, characterized in that: The bottom of the epoxy pouring body (4) is provided with a cylindrical hole, and the epoxy resin plate (8) is provided with a positioning hole.

6. The 10 kV current mode PT power taking device according to claim 1, characterized in that: The silica gel sleeve (2) is a cylindrical body with size interval umbrella skirt.

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