A voltage divider and GIS

Abstract

The present invention specifically relates to a voltage divider and GIS, wherein the GIS comprises a body and a voltage divider, wherein the body comprises a busbar, the busbar is connected to the voltage divider, the voltage divider comprises a high-voltage arm and a low-voltage arm, one end of the high-voltage arm is connected to the busbar of the GIS body, the other end of the high-voltage arm is connected to the low-voltage arm, the low-voltage arm is connected to a signal lead-out line and a grounding line, a high-voltage voltage divider device is arranged in the high-voltage arm, a low-voltage voltage divider device is arranged in the low-voltage arm, and part of the voltage divider devices of the low-voltage voltage divider devices are located in the high-voltage arm, so that the change trends of the high-voltage voltage divider devices and the low-voltage voltage divider devices are close. The present invention can effectively alleviate the problem of the imbalance of the resistance ratio of the high-voltage voltage divider device and the low-voltage voltage divider device, and further can also realize the voltage divider to measure the voltage with higher accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of voltage dividers, and in particular relates to a voltage divider and a GIS. Background Art

[0002] Voltage dividers are used in GIS and electrical and electronic equipment manufacturing departments to measure industrial frequency AC high voltage and DC high voltage. Voltage dividers include RC voltage dividers, which include high-voltage arms and low-voltage arms. A high-voltage divider device is provided in the high-voltage arm. One end of the high-voltage arm is connected to the busbar of the GIS body through an insulator, and the other end of the high-voltage arm is connected to the high-voltage side of the low-voltage arm through an insulator. A low-voltage divider device is provided in the low-voltage arm, and the low-voltage divider device is located outside the high-voltage arm. The high-voltage side of the low-voltage arm is also connected to a lead-out wire for connecting to external equipment, and the low-voltage side of the low-voltage arm is connected to a ground wire.

[0003] When in use, the voltages of the high voltage divider and the low voltage divider are determined by the resistance ratio of the high voltage divider and the low voltage divider, and the ratio of the resistance ratio of the high voltage divider and the low voltage divider is equal to the ratio of the voltage ratio of the high voltage divider and the low voltage divider. Since the voltage of the voltage divider is the voltage of the GIS, the voltage of the entire GIS can be indirectly obtained by measuring the voltage of the low voltage arm.

[0004] However, since the high-voltage voltage divider device and the low-voltage voltage divider device in the above-mentioned voltage divider device are located in different environments, this will cause the high-voltage voltage divider device and the low-voltage voltage divider device to have quite different changing trends with temperature. At the same time, since the resistance of the high-voltage voltage divider device changes greatly with temperature, while the resistance of the low-voltage voltage divider device changes less with temperature, this will cause a large change in the resistance ratio between the high-voltage voltage divider device and the low-voltage voltage divider device, and cause the resistance ratio between the high-voltage voltage divider device and the low-voltage voltage divider device to be out of proportion, which will also affect the measurement accuracy of the voltage divider. Summary of the invention

[0005] The object of the present invention is to provide a voltage divider to solve the problem in the prior art that the measurement result is inaccurate due to the difference in the environment inside the high-voltage arm and the low-voltage arm; the object of the present invention is also to provide a GIS to solve the problem in the prior art that when a voltage divider is used to measure the voltage in the GIS, the measurement result is inaccurate due to the difference in the environment inside the high-voltage arm and the low-voltage arm of the voltage divider.

[0006] To achieve the above purpose, the voltage divider in the present invention adopts the following technical solution:

[0007] A voltage divider comprises a high-voltage arm and a low-voltage arm, wherein one end of the high-voltage arm is used to be connected to the busbar of a GIS body through an insulator, and the other end of the high-voltage arm is connected to the high-voltage side of the low-voltage arm, a signal lead line is also connected to the high-voltage side of the low-voltage arm, and a ground line is connected to the low-voltage side of the low-voltage arm. A high-voltage voltage divider device is arranged in the high-voltage arm, and a low-voltage voltage divider device is arranged in the low-voltage arm. Part of the low-voltage voltage divider device is located in the high-voltage arm, so that the change trends of the high-voltage voltage divider device and the low-voltage voltage divider device are close.

[0008] The beneficial effect of the above technical solution is that: the present invention arranges part of the low-voltage voltage divider device in the low-voltage arm in the high-voltage arm, so that the part of the voltage divider device in the low-voltage arm and the high-voltage voltage divider device in the high-voltage arm are located in the same environment, so that when the voltage divider measures the voltage, the change trend of the above part of the voltage divider device and the high-voltage voltage divider device in the high-voltage arm with temperature changes is close, so that the influence of the low-voltage voltage divider device on the resistance ratio of the high-voltage voltage divider device to the low-voltage voltage divider device is relatively weakened. Therefore, compared with the prior art, the present invention arranges part of the voltage divider device in the high-voltage arm, so that the imbalance problem of the resistance ratio of the high-voltage voltage divider device to the low-voltage voltage divider device is effectively alleviated, and thus the voltage divider can also achieve higher-precision measurement of voltage.

[0009] Furthermore, the portion of the low voltage voltage divider components located in the high voltage arm accounts for 60% to 95% of the low voltage voltage divider components.

[0010] The beneficial effect of the above technical solution is that it can ensure at a minimum that the influence of the low voltage divider device on the resistance ratio of the high voltage divider device to the low voltage divider device will not affect the voltage measurement accuracy of the voltage divider, that is, it can ensure at a minimum the voltage measurement accuracy of the voltage divider.

[0011] Furthermore, the portion of the low voltage voltage divider components located in the high voltage arm accounts for 90% of the low voltage voltage divider components.

[0012] The beneficial effect of the above technical solution is that while ensuring that the low-voltage voltage divider device can weaken the impact of the imbalance in the resistance ratio between the high-voltage voltage divider device and the low-voltage voltage divider device, the part of the voltage divider device located outside the high-voltage arm of the low-voltage voltage divider device can also relatively meet the demand for adjusting the resistance of the low-voltage voltage divider device.

[0013] Furthermore, the low-voltage voltage divider device includes a first low-voltage voltage divider device and a second low-voltage voltage divider device, the first low-voltage voltage divider device is the same as the high-voltage voltage divider device, the partial voltage divider device is composed of the first low-voltage voltage divider device, the second low-voltage voltage divider device is located outside the high-voltage arm, and the second low-voltage voltage divider device is a precision voltage divider device.

[0014] The beneficial effect of the above technical solution is that: in this way, not only can the first low-voltage voltage divider device be used to make the temperature change trend of the low-voltage voltage divider device and the high-voltage voltage divider device closer, but also because the second low-voltage voltage divider device located outside the high-voltage arm is a precision voltage divider device, the resistance of the low-voltage voltage divider device can be more accurately adjusted through the second low-voltage voltage divider device.

[0015] Furthermore, the high-voltage arm comprises a sleeve located outside the high-voltage voltage divider component, and a transition piece is provided on the sleeve, which is used to keep the inside of the sleeve sealed and to allow the first low-voltage voltage divider component to be led out from the high-voltage arm.

[0016] The beneficial effect of the above technical solution is that an adapter is arranged on the sleeve, so that the adapter can not only ensure that the first low-voltage voltage divider device is led out from the high-voltage arm to the outside, but also the adapter can ensure the sealing degree of the high-voltage arm sleeve, thereby reducing the influence of the outside world on the high-voltage arm, and further reducing the influence of the outside world on the measurement accuracy of the voltage divider.

[0017] Furthermore, the adapter is connected to an instrument connection line located outside the high-voltage arm, and the instrument connection line is connected to the signal lead-out line through the adapter.

[0018] The beneficial effect of the above technical solution is that: on the basis of ensuring that the adapter can achieve sealing inside the high-voltage arm sleeve, the signal lead wire and the instrument connection wire are connected through the adapter, which facilitates the connection between the voltage divider and external equipment, making the voltage divider more convenient to measure the voltage.

[0019] Furthermore, the sleeve includes an insulator, and the adapter is arranged on the insulator.

[0020] The beneficial effect of the above technical solution is that the provision of the insulator not only facilitates the installation of the adapter, but also facilitates the connection between the high-voltage arm and the low-voltage arm.

[0021] Furthermore, the voltage divider is a resistor-capacitor voltage divider.

[0022] The beneficial effect of the above technical solution is that the voltage divider is set as a resistor-capacitor voltage divider, so that the impact of the impulse signal on the voltage divider measurement can be reduced through the resistor-capacitor voltage divider, and the measurement accuracy of the voltage divider can be relatively improved.

[0023] Furthermore, insulating gas is provided in the high voltage arm.

[0024] The beneficial effect of the above technical solution is that insulating gas is provided in the high-voltage arm, so that the insulation effect of the high-voltage arm to the outside world can be guaranteed by the insulating gas, which can relatively make the insulation effect of the high-voltage arm better, and at the same time can also reduce the impact of the outside world on the high-voltage arm, so that the measurement result of the voltage divider is more accurate.

[0025] To achieve the above purpose, the GIS in the present invention adopts the following technical solutions:

[0026] A GIS comprises a body and a voltage divider, wherein the body comprises a busbar, the busbar is connected to the voltage divider, the voltage divider comprises a high-voltage arm and a low-voltage arm, one end of the high-voltage arm is connected to the busbar of the GIS body through an insulator, the other end of the high-voltage arm is connected to the high-voltage side of the low-voltage arm, the high-voltage side of the low-voltage arm is also connected to a signal lead-out line, the low-voltage side of the low-voltage arm is connected to a grounding line, a high-voltage voltage divider device is arranged in the high-voltage arm, a low-voltage voltage divider device is arranged in the low-voltage arm, and part of the low-voltage voltage divider device is located in the high-voltage arm, so that the change trends of the high-voltage voltage divider device and the low-voltage voltage divider device are close.

[0027] The beneficial effect of the above technical solution is that: the present invention arranges part of the low-voltage voltage divider device in the low-voltage arm in the high-voltage arm, so that the part of the voltage divider device in the low-voltage arm and the high-voltage voltage divider device in the high-voltage arm are located in the same environment, so that when the voltage divider measures the voltage, the change trend of the above part of the voltage divider device and the high-voltage voltage divider device in the high-voltage arm with temperature changes is close, so that the influence of the low-voltage voltage divider device on the resistance ratio of the high-voltage voltage divider device to the low-voltage voltage divider device is relatively weakened. Therefore, compared with the prior art, the present invention arranges part of the voltage divider device in the high-voltage arm, so that the imbalance problem of the resistance ratio of the high-voltage voltage divider device to the low-voltage voltage divider device is effectively alleviated, and thus the voltage divider can also achieve higher-precision measurement of voltage.

[0028] Furthermore, the portion of the low voltage voltage divider components located in the high voltage arm accounts for 60% to 95% of the low voltage voltage divider components.

[0029] The beneficial effect of the above technical solution is that it can ensure at a minimum that the influence of the low voltage divider device on the resistance ratio of the high voltage divider device to the low voltage divider device will not affect the voltage measurement accuracy of the voltage divider, that is, it can ensure at a minimum the voltage measurement accuracy of the voltage divider.

[0030] Furthermore, the portion of the low voltage voltage divider components located in the high voltage arm accounts for 90% of the low voltage voltage divider components.

[0031] The beneficial effect of the above technical solution is that while ensuring that the low-voltage voltage divider device can weaken the impact of the imbalance in the resistance ratio between the high-voltage voltage divider device and the low-voltage voltage divider device, the part of the voltage divider device located outside the high-voltage arm of the low-voltage voltage divider device can also relatively meet the demand for adjusting the resistance of the low-voltage voltage divider device.

[0032] Furthermore, the low-voltage voltage divider device includes a first low-voltage voltage divider device and a second low-voltage voltage divider device, the first low-voltage voltage divider device is the same as the high-voltage voltage divider device, the partial voltage divider device is composed of the first low-voltage voltage divider device, the second low-voltage voltage divider device is located outside the high-voltage arm, and the second low-voltage voltage divider device is a precision voltage divider device.

[0033] The beneficial effect of the above technical solution is that: in this way, not only can the first low-voltage voltage divider device be used to make the temperature change trend of the low-voltage voltage divider device and the high-voltage voltage divider device closer, but also because the second low-voltage voltage divider device located outside the high-voltage arm is a precision voltage divider device, the resistance of the low-voltage voltage divider device can be more accurately adjusted through the second low-voltage voltage divider device.

[0034] Furthermore, the high-voltage arm comprises a sleeve located outside the high-voltage voltage divider component, and a transition piece is provided on the sleeve, which is used to keep the inside of the sleeve sealed and to allow the first low-voltage voltage divider component to be led out from the high-voltage arm.

[0035] The beneficial effect of the above technical solution is that an adapter is arranged on the sleeve, so that the adapter can not only ensure that the first low-voltage voltage divider device is led out from the high-voltage arm to the outside, but also the adapter can ensure the sealing degree of the high-voltage arm sleeve, thereby reducing the influence of the outside world on the high-voltage arm, and further reducing the influence of the outside world on the measurement accuracy of the voltage divider.

[0036] Furthermore, the adapter is connected to an instrument connection line located outside the high-voltage arm, and the instrument connection line is connected to the signal lead-out line through the adapter.

[0037] The beneficial effect of the above technical solution is that: on the basis of ensuring that the adapter can achieve sealing inside the high-voltage arm sleeve, the signal lead wire and the instrument connection wire are connected through the adapter, which facilitates the connection between the voltage divider and external equipment, making the voltage divider more convenient to measure the voltage.

[0038] Furthermore, the sleeve includes an insulator, and the adapter is arranged on the insulator.

[0039] The beneficial effect of the above technical solution is that the provision of the insulator not only facilitates the installation of the adapter, but also facilitates the connection between the high-voltage arm and the low-voltage arm.

[0040] Furthermore, the voltage divider is a resistor-capacitor voltage divider.

[0041] The beneficial effect of the above technical solution is that the voltage divider is set as a resistor-capacitor voltage divider, so that the impact of the impulse signal on the voltage divider measurement can be reduced through the resistor-capacitor voltage divider, and the measurement accuracy of the voltage divider can be relatively improved.

[0042] Furthermore, insulating gas is provided in the high voltage arm.

[0043] The beneficial effect of the above technical solution is that insulating gas is provided in the high-voltage arm, so that the insulation effect of the high-voltage arm to the outside world can be guaranteed by the insulating gas, which can relatively make the insulation effect of the high-voltage arm better, and at the same time can also reduce the impact of the outside world on the high-voltage arm, so that the measurement result of the voltage divider is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic diagram of a voltage divider in the present invention;

[0045] Figure 2 is an electrical schematic diagram of a voltage divider in the present invention;

[0046] Figure 3 It is an electrical schematic diagram of a low voltage arm in the voltage divider of the present invention;

[0047] Figure 4 It is a schematic diagram of a low voltage insulator in the voltage divider of the present invention.

[0048] In the figure: 10, high-voltage arm; 11, high-voltage voltage divider; 20, low-voltage arm; 21, first low-voltage voltage divider; 22, second low-voltage voltage divider; 30, high-voltage insulator; 40, low-voltage insulator; 41, resistor adapter; 42, capacitor adapter; 43, signal adapter; 50, signal lead wire; 60, ground wire; 70, instrument connection wire; 80, sleeve. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0051] It should be noted that, in the specific implementation of the present invention, the terms that may appear, such as "first" and "second", etc., are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms that may appear, such as "include", "comprise" or any other variants thereof, are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the phrase "including a ..." and other defined elements that may appear do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0053] In the description of the present invention, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The present invention is further described in detail below in conjunction with embodiments.

[0055] Embodiment 1 of the voltage divider of the present invention:

[0056] In this embodiment, the voltage divider is a resistor-capacitor voltage divider, such as Figure 1 and Figure 2 As shown, the voltage divider includes a high voltage arm 10 and a low voltage arm 20. The high voltage arm 10 includes a sleeve 80, and the sleeve 80 includes a high voltage insulator 30 and a low voltage insulator 40 respectively located at both ends of the sleeve 80, and one end of the high voltage arm 10 is connected to the busbar (not shown in the figure) of the GIS body through the high voltage insulator 30, and the other end of the high voltage arm 10 is connected to the low voltage arm 20 through the low voltage insulator 40. Figure 2 and Figure 3As shown, a high-voltage voltage divider 11 is provided in the sleeve 80. The high-voltage voltage divider 11 is composed of a plurality of series-connected resistor-capacitor units, each of which includes a resistor R1 and a capacitor C1 ( Figure 3 In addition, an insulating gas is also provided in the sleeve 80 of the high-voltage arm 10, so that the insulating gas can ensure the insulation effect of the high-voltage arm 10 to the outside world, which can relatively make the insulation effect of the high-voltage arm 10 better, and can also reduce the impact of the outside world on the high-voltage arm 10, so that the measurement result of the voltage divider is more accurate.

[0057] A low-voltage voltage divider device is provided in the low-voltage arm 20, and the low-voltage voltage divider device includes a first low-voltage voltage divider device 21 and a second low-voltage voltage divider device 22. Among them, the first low-voltage voltage divider device 21 is located in the high-voltage arm 10, and the first low-voltage voltage divider device 21 includes a resistor R3 and a capacitor C3, and the resistor R3 and the resistor R1 have the same model and parameters, and the capacitor C3 and the capacitor C1 have the same model and parameters, that is, the first voltage divider device is the same as the high-voltage voltage divider device 11. The resistor R3 accounts for 90% of the total resistance R2 of the low-voltage voltage divider device, and the capacitor C3 accounts for 90% of the total capacitance C2 of the low-voltage voltage divider device, that is, the first low-voltage voltage divider device 21 accounts for 90% of the low-voltage voltage divider device.

[0058] The second low-voltage voltage divider device 22 is located outside the high-voltage arm 10, and the second low-voltage voltage divider device 22 includes a resistor R4 and a capacitor C4, wherein the resistor R4 is a high-precision resistor, and the capacitor C4 is a high-precision capacitor, and the high-precision resistor and the high-precision capacitor are less affected by temperature changes. Among them, the resistor R4 accounts for 10% of the total resistance R2 of the low-voltage voltage divider device, and the capacitor C4 accounts for 10% of the total capacitance C2 of the low-voltage voltage divider device, that is, the second low-voltage voltage divider device 22 accounts for 10% of the low-voltage voltage divider device.

[0059] like Figure 4 As shown, by setting a resistor adapter 41 and a capacitor adapter 42 on the low voltage insulator 40, the resistor R3 and the resistor R4 are connected in series with each other through the resistor adapter 41 set on the low voltage insulator 40, and the capacitor C3 and the capacitor C4 are connected in series with each other through the capacitor adapter 42 set on the low voltage insulator 40, that is, the first low voltage voltage divider device 21 is led out from the high voltage arm 10 to the outside and connected to the second low voltage voltage divider device 22, and the resistor R3 and the resistor R4 connected in series with each other are connected in parallel with the capacitor C3 and the capacitor C4.

[0060] The high voltage side of the low voltage arm 20 is also connected to a signal lead wire 50, and the low voltage side of the low voltage arm 20 is connected to a ground wire 60, wherein the signal lead wire 50 is located inside the high voltage arm 10. Figure 4As shown, a signal adapter 43 is also provided on the low-voltage insulator 40, and the signal lead-out line 50 is connected to an instrument connecting line 70 via the signal adapter 43 provided on the low-voltage insulator 40, so that the voltage divider can be connected to an external instrument via the instrument connecting line 70, which makes the measurement of the voltage divider more convenient.

[0061] The present invention arranges the first low-voltage voltage divider of the low-voltage voltage divider in the high-voltage arm so that the first low-voltage voltage divider and the high-voltage voltage divider of the high-voltage arm are located in the same environment. In this way, when the voltage divider measures the voltage, the first low-voltage voltage divider and the high-voltage voltage divider in the high-voltage arm have similar change trends with temperature changes, which relatively weakens the influence of the low-voltage voltage divider on the resistance ratio of the high-voltage voltage divider and the low-voltage voltage divider. At this time, the resistance of the second low-voltage voltage divider is added to make the resistance ratio of the high-voltage voltage divider and the low-voltage voltage divider reach the desired ideal value. Compared with the prior art, the present invention arranges the first low-voltage voltage divider in the high-voltage arm so that the imbalance problem of the resistance ratio of the high-voltage voltage divider and the low-voltage voltage divider is effectively alleviated, thereby also being able to achieve a higher-precision measurement of the voltage by the voltage divider.

[0062] Embodiment 2 of the voltage divider in the present invention:

[0063] The difference between this embodiment and the first embodiment is that in the first embodiment, the voltage divider is a resistor-capacitor voltage divider.

[0064] In this embodiment, the voltage divider is a resistive voltage divider.

[0065] Embodiment 3 of the voltage divider in the present invention:

[0066] The difference between this embodiment and the first embodiment is that in the first embodiment, the adapter is arranged on the insulator, while in the present embodiment, the adapter is arranged on the sleeve 80 .

[0067] Embodiment 4 of the voltage divider of the present invention:

[0068] The difference between this embodiment and embodiment 1 is that in embodiment 1, an adapter is provided on the sleeve 80, and the first low-voltage voltage divider device 21 and the signal connection line are led out from the high-voltage arm 10 through the adapter. In this embodiment, the first low-voltage voltage divider device 21 and the signal connection line are directly led out through the sleeve 80, and the sleeve 80 is in close contact with the lead-out line of the first low-voltage voltage divider device 21 and the signal connection line.

[0069] Embodiment 5 of the voltage divider of the present invention:

[0070] The difference between this embodiment and embodiment 1 is that in embodiment 1, the first low-voltage voltage divider device 21 accounts for 90% of the low-voltage voltage divider devices. In this embodiment, the first low-voltage voltage divider device 21 accounts for 60% or more and less than 90% of the low-voltage voltage divider devices, or may be greater than 90% and less than or equal to 95%.

[0071] An embodiment of GIS in the present invention: GIS includes a body and a voltage divider, the body includes a busbar, the busbar is connected to the voltage divider, and the specific structure of the voltage divider is the same as the voltage divider in the above-mentioned voltage divider embodiment, which will not be repeated here.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A voltage divider, comprising a high-voltage arm and a low-voltage arm, wherein one end of the high-voltage arm is used to be connected to the busbar of the GIS body through an insulator, and the other end of the high-voltage arm is connected to the high-voltage side of the low-voltage arm, the high-voltage side of the low-voltage arm is also connected to a signal lead-out line, and the low-voltage side of the low-voltage arm is connected to a grounding line, a high-voltage voltage divider device is provided in the high-voltage arm, and a low-voltage voltage divider device is provided in the low-voltage arm, wherein: Part of the low voltage divider is located in the high voltage arm so that the high voltage divider and the low voltage divider have similar changing trends with temperature. The part of the low voltage divider located in the high voltage arm accounts for 60% to 95% of the low voltage divider.

2. The voltage divider according to claim 1, characterized in that: The part of the low voltage voltage divider device located in the high voltage arm accounts for 90% of the low voltage voltage divider device.

3. The voltage divider according to any one of claims 1 or 2, characterized in that: The low-voltage voltage divider device includes a first low-voltage voltage divider device and a second low-voltage voltage divider device. The first low-voltage voltage divider device is the same as the high-voltage voltage divider device. The partial voltage divider device is composed of the first low-voltage voltage divider device. The second low-voltage voltage divider device is located outside the high-voltage arm. The second low-voltage voltage divider device is a precision voltage divider device.

4. The voltage divider according to claim 3, characterized in that: The high-voltage arm comprises a sleeve located outside the high-voltage voltage divider device, and a transition piece is provided on the sleeve. The transition piece is used to keep the inside of the sleeve sealed and to allow the first low-voltage voltage divider device to be led out from the high-voltage arm.

5. The voltage divider according to claim 4, characterized in that: The adapter is connected with an instrument connection line located outside the high-voltage arm, and the instrument connection line is connected with the signal lead-out line through the adapter.

6. The voltage divider according to claim 4 or 5, characterized in that: The sleeve comprises an insulator, and the adapter is arranged on the insulator.

7. The voltage divider according to any one of claims 1 or 2, characterized in that: The voltage divider is a resistor-capacitor voltage divider.

8. The voltage divider according to any one of claims 1 or 2, characterized in that: Insulating gas is provided in the high voltage arm.

9. A GIS, comprising a body and a voltage divider, wherein the body comprises a busbar, and the busbar is connected to the voltage divider, characterized in that: The voltage divider is the same as the voltage divider according to any one of claims 1 to 8.

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