阅读说明：本技术 一种阻容分压器高压臂的电阻单元 (Resistance unit of high-voltage arm of resistance-capacitance voltage divider ) 是由 胡康敏 龙兆芝 李文婷 刘少波 范佳威 谢施君 雷民 周峰 余也凤 李明 于 2020-12-17 设计创作，主要内容包括：本申请公开了一种阻容分压器高压臂的电阻单元,包括电阻、第一连接结构、第二连接结构和支撑结构。第一连接结构具有导电功能,第一连接结构用于与电阻的第一端连接,并螺纹安装至电容单元的螺孔中。第二连接结构具有导电功能,第二连接结构用于与电阻的第二端连接,并螺纹安装至电容单元的螺孔中。支撑结构具有绝缘功能,支撑结构用于支撑在第一连接结构和第二连接结构之间。本申请的电阻单元结构紧凑、牢固,导体之间接触紧密,从而具有良好的导电性能,另外,本申请的电阻单元方便拆卸与安装,适合用于长途运输和现场试验。(The application discloses resistance unit of resistance-capacitance voltage divider high-voltage arm, including resistance, first connection structure, second connection structure and bearing structure. The first connecting structure has a conductive function and is used for being connected with the first end of the resistor and being installed in the screw hole of the capacitor unit in a threaded mode. The second connecting structure has a conductive function, is used for being connected with the second end of the resistor and is installed in the screw hole of the capacitor unit in a threaded mode. The support structure has an insulating function and is adapted to be supported between the first connection structure and the second connection structure. The resistance unit compact structure of this application, firm, the contact is inseparable between the conductor to have good electric conductive property, in addition, the convenient dismantlement of resistance unit and the installation of this application are fit for being used for long-distance transport and field test.)

1. A resistor unit of a high voltage arm of a resistance-capacitance voltage divider is characterized by comprising:

a resistance;

the first connecting structure has a conductive function, is used for being connected with the first end of the resistor and is installed in a screw hole of the capacitor unit in a threaded manner;

the second connecting structure has a conductive function, is used for being connected with the second end of the resistor and is installed in a screw hole of the capacitor unit in a threaded manner; and

a support structure having an insulating function, the support structure being configured to be supported between the first connection structure and the second connection structure.

2. The resistive unit of claim 1, wherein the first connection structure comprises:

the first connecting plate is provided with a first central part, at least two first connecting parts and at least two first connecting lines, wherein the first central part, the at least two first connecting parts and the at least two first connecting lines respectively have a conducting function; and

and the first connecting piece has a conductive function, is connected to the first central part and is provided with a first screw rod perpendicular to the first connecting plate, and the first screw rod is used for being installed in a screw hole of the capacitor unit in a threaded mode.

3. The resistance unit of claim 2,

each of the first connecting portions is disposed around the first center portion.

4. The resistance unit of claim 2,

each first connecting portion can equally include a first connecting hole of axis perpendicular to first connecting plate respectively for the first end of resistance wear to establish in first connecting hole back welded fastening.

5. The resistance unit of any of claims 1-4, wherein the second connection structure comprises:

the second connecting plate is provided with a second central part, at least two second connecting parts and at least two second connecting wires, wherein the second central part, the at least two second connecting parts and the at least two second connecting wires are respectively provided with a conducting function; and

and the second connecting piece has a conductive function, is connected to the second central part and is provided with a second screw rod perpendicular to the second connecting plate, and the second screw rod is used for being installed in a screw hole of the capacitor unit in a threaded mode.

6. The resistance unit of claim 5,

each of the second connecting portions is disposed around the second center portion.

7. The resistance unit of claim 5,

each second connecting portion may include a second connecting hole having an axis perpendicular to the second connecting plate, so that the second end of the resistor is inserted into the second connecting hole and then welded and fixed.

8. The resistance unit of claim 5,

the supporting structure is columnar, the axis of the supporting structure is perpendicular to the first connecting plate and the second connecting plate, and two ends of the supporting structure are connected with the first connecting plate and the second connecting plate respectively.

9. The resistance unit of claim 8,

the first end of the supporting structure is provided with at least two first fastening screw holes;

the first connecting plate is provided with at least two first fixing holes, and each first fixing hole is communicated with each first fastening screw hole;

the first connecting piece is provided with at least two first mounting holes, and each first mounting hole is communicated with each first fixing hole respectively, so that a screw penetrates through the first mounting hole and the first fixing hole to be installed in the first fastening screw hole in a threaded mode.

10. The resistance unit of claim 8,

the second end of the supporting structure is provided with at least two second fastening screw holes;

the second connecting plate is provided with at least two second fixing holes, and each second fixing hole is communicated with each second fastening screw hole;

the second connecting piece is provided with at least two second mounting holes, and each second mounting hole is communicated with each second fixing hole respectively, so that a screw passes through the second mounting hole and the second fixing hole to be installed in the second fastening screw hole in a threaded mode.

Technical Field

The application relates to the field of power systems, in particular to a resistance unit of a high-voltage arm of a resistance-capacitance voltage divider.

Background

In an electric power system, the operation overvoltage and the lightning overvoltage can damage operation equipment of a power transmission line and a transformer substation, and accurate measurement of the overvoltage of the power transmission line and the transformer substation has important significance for safe and stable operation of the power transmission line. The impulse voltage divider commonly used at present includes a resistor divider, a capacitor divider and a resistor-capacitor divider. Both resistive and capacitive voltage dividers are affected by stray capacitance to ground, causing errors in the measurement. The resistance-capacitance voltage divider can weaken the influence on stray capacitance to the ground, so that the measurement result is more accurate. The resistance-capacitance voltage divider not only can accurately measure the operation overvoltage and the lightning overvoltage, but also can measure the power frequency voltage, and the coverage range of the test voltage types is wide.

At present, each power equipment manufacturer and each electric power test research institute can calibrate the resistance-capacitance voltage divider, and most units require a testing unit to carry the voltage divider to a laboratory for field calibration. The parts of the high-voltage arm resistance unit of the present rc voltage divider are generally: the resistance wire is wound on the insulating sleeve and connected with the capacitor unit, the resistor unit and the capacitor unit are directly welded and packaged in the voltage divider sleeve, the voltage divider sleeve cannot be freely disassembled, and great difficulty exists in long-distance transportation and field test.

Content of application

The application provides a resistance unit of resistance-capacitance voltage divider high-voltage arm, can be convenient for installation and dismantlement, be convenient for long-distance transport and carry.

In a first aspect, an embodiment of the present application provides a resistor unit of a high voltage arm of a rc voltage divider, which includes a resistor, a first connection structure, a second connection structure, and a support structure. The first connecting structure has electric conduction function

The first connecting structure is used for being connected with the first end of the resistor and is installed in the screw hole of the capacitor unit in a threaded mode. The second connecting structure has a conductive function, is used for being connected with the second end of the resistor and is installed in the screw hole of the capacitor unit in a threaded mode. The support structure has an insulating function and is adapted to be supported between the first connection structure and the second connection structure.

In some of these embodiments, the first connection structure includes a first connection plate and a first connector. The first connecting plate is provided with a first central part, at least two first connecting parts and at least two first connecting lines, wherein the first central part, the at least two first connecting parts and the at least two first connecting lines are all provided with a conducting function, each first connecting part is used for being connected with the first end of the resistor, and each first connecting line is connected with the first central part and each first connecting part. The first connecting piece has a conductive function, is connected to the first central portion and has a first screw rod perpendicular to the first connecting plate, and the first screw rod is used for being installed in a screw hole of the capacitor unit in a threaded mode.

In some of these embodiments, each first connecting portion is disposed around the first central portion.

In some embodiments, each of the first connection portions may include a first connection hole having an axis perpendicular to the first connection plate, so that the first end of the resistor is inserted into the first connection hole and then welded.

In some of these embodiments, the second connection structure includes a second connection plate and a second connection member. The second connecting plate has the second central part, two at least second connecting portions and two at least second connecting wires of equalling divide and do not having the function of conducting, and each second connecting portion are used for being connected with the second end of resistance respectively, and each second connecting wire is connected second central part and each second connecting portion respectively. The second connecting piece has a conductive function, is connected to the second center portion, and has a second screw perpendicular to the second connecting plate for screw-thread mounting into a screw hole of the capacitor unit.

In some of these embodiments, each second connecting portion is disposed around the second central portion.

In some embodiments, each of the second connection portions may include a second connection hole having an axis perpendicular to the second connection plate, so that the second end of the resistor is inserted into the second connection hole and then welded.

In some of these embodiments, the support structure is cylindrical, the axis of the support structure is perpendicular to the first and second connecting plates, and the two ends of the support structure are connected to the first and second connecting plates, respectively.

In some of these embodiments, the first end of the support structure has at least two first fastening screw holes. The first connecting plate is provided with at least two first fixing holes, and each first fixing hole is communicated with each first fastening screw hole. The first connecting piece is provided with at least two first mounting holes, and each first mounting hole is communicated with each first fixing hole respectively, so that the screw penetrates through the first mounting hole and the first fixing hole and is installed in the first fastening screw hole in a threaded mode.

In some of these embodiments, the second end of the support structure has at least two second fastening screw holes. The second connecting plate has at least two second fixed orificess, and each second fixed orifices communicates second connecting piece with each second fastening screw respectively and has at least two second mounting holes, and each second mounting hole communicates with each second fixed orifices respectively for the screw passes in second mounting hole, second fixed orifices threaded mounting to the second fastening screw.

According to the embodiment of the application, the resistance unit of the high-voltage arm of the resistance-capacitance voltage divider comprises a resistor, a first connecting structure, a second connecting structure and a supporting structure. The first connecting structure has a conductive function and is used for being connected with the first end of the resistor and being installed in the screw hole of the capacitor unit in a threaded mode. The second connecting structure has a conductive function, is used for being connected with the second end of the resistor and is installed in the screw hole of the capacitor unit in a threaded mode. The support structure has an insulating function and is adapted to be supported between the first connection structure and the second connection structure. The resistance unit compact structure of this application, firm, the contact is inseparable between the conductor to have good electric conductive property, in addition, the convenient dismantlement of resistance unit and the installation of this application are fit for being used for long-distance transport and field test.