High potential gas-filled remote control switch device for DC voltage proportional value traceability

Abstract

The present invention provides a high-potential, gas-filled remote control switch for DC voltage proportional value traceability. The switch comprises a conductive tube, a measuring layer switch, and a shielding layer switch. Caps are provided at both ends of the conductive tube to form a closed inner cavity. The upper end of the conductive tube is connected to the high-voltage arm of an upper auxiliary standard device. When the movable member of the measuring layer switch is connected to a first terminal and the shielding layer switch is suspended, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series. When the movable member of the measuring layer switch is connected to a second terminal and the movable member of the shielding layer switch is connected to a first terminal, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device operate independently. This invention significantly reduces the experimental workload for calibrating the voltage coefficient of a DC voltage proportional standard value and reduces leakage current generated between the measuring resistor layer and the shielding resistor layer.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a high-potential gas-filled remote control switch for direct current voltage proportional value tracing. Background Art

[0002] Currently, DC voltages of 1kV and below can be directly measured using a DC voltmeter. However, when DC voltages reach 10kV, 100kV, or even 1000kV, DC voltmeters are no longer able to directly measure the DC voltage. In these cases, a DC voltage proportional device is required to convert the high DC voltage into a low DC voltage according to a specific ratio. The measured low DC voltage is then used to calculate the high DC voltage based on the proportional value of the DC voltage proportional device. Therefore, the accuracy of the proportional value of the high DC voltage converted to the low DC voltage becomes the key to accurate DC high voltage metering and measurement.

[0003] Generally, the proportional value of a lower-accuracy DC voltage proportional device can be traced back to a higher-accuracy DC voltage proportional standard. However, for the most accurate DC voltage proportional standards, such as the national highest DC voltage proportional standard, other methods are required to trace the proportional value. The 1000kV DC voltage proportional standard established by the National High Voltage Metering Center is the highest public measurement standard in my country's DC high voltage metering field. This standard uses DC voltage addition and achieves traceability of the DC voltage proportional standard value through self-calibration testing.

[0004] The key to traceability of DC voltage ratio standard value is to determine the voltage coefficient of DC voltage ratio standard value. The main standard and auxiliary standard used in the voltage coefficient calibration test of 1000kV DC voltage ratio standard value at the National High Voltage Metering Station are as follows: Figure 1 As shown. 1# is the 500kV upper section auxiliary standard device, 2# is the 500kV lower section auxiliary standard device, 3# is the (500kV + 500kV) series auxiliary standard device consisting of the high- and low-voltage arms of 1# and 2# connected in series, and 4# is the 1000kV main standard device. R1, R3, R1+R3, and R5 are the high-voltage arms of 1#, 2#, 3#, and 4#, respectively. R2, R4, R2+R4, and R6 are the low-voltage arms of 1#, 2#, 3#, and 4#, respectively. To determine the voltage coefficient of 4#, a three-step calibration test is performed: first, at voltage U, calibrate 4# using 1# alone; second, at voltage U, calibrate 4# using 2# alone; and third, at voltage 2U, calibrate 4# using 3#. The results of these three-step calibration tests can be used to determine the voltage coefficient of 4#.

[0005] It should be noted that the high-voltage arms of both the main and auxiliary standard devices are composed of thousands of resistor elements connected in series, and must withstand high DC voltages of up to 1000kV and 500kV, respectively. These arms are large and heavy. The low-voltage arms of both the main and auxiliary standard devices, on the other hand, consist of a single resistor element, which is small and lightweight. This results in the following drawbacks:

[0006] In the third step of the calibration test, it is necessary to connect the 1# high-voltage arm R1 and the 2# high-voltage arm R3 in series to form the 3# high-voltage arm R1+R3. Due to the large size and heavy weight of the high-voltage arms R1 and R3, the calibration test workload is large. During the third step of the calibration test, the lower ends of the measuring resistance layer and the shielding resistance layer of the 1# high-voltage arm are connected to the upper ends of the measuring resistance layer and the shielding resistance layer of the 2# high-voltage arm respectively to form the 3# high-voltage arm. Figure 2 As shown in the figure, the voltage ratio of the measuring layer of the 1# high voltage arm and the 2# high voltage arm is different from the voltage ratio of the shielding layer of the 1# high voltage arm and the 2# high voltage arm. Figure 2 A voltage difference will develop between points A and B in the circuit. When the applied voltage reaches 1000kV, the voltage difference between points A and B can reach as high as kilovolts. Since points A and B are constantly exposed to air, the long-term effects of humidity will cause the insulation resistance between them to decrease. During the third step of the calibration test, a large leakage current will flow between points A and B, affecting the assessment of the 4# voltage coefficient. Summary of the Invention

[0007] In view of this, the present invention proposes a high-potential gas-filled remote control switch for tracing the DC voltage proportional value, aiming to solve the problems of large workload and low efficiency in the existing technology when calibrating the voltage coefficient of the DC voltage proportional standard value.

[0008] In one aspect, the present invention provides a high-potential gas-filled remote control switch for DC voltage proportional value traceability, comprising: a conductive tube, a measuring layer switch, and a shielding layer switch; wherein,

[0009] Both ends of the conductive tube are provided with covers to form a closed inner cavity. The upper end of the conductive tube is used to connect with the high-voltage arm of the upper auxiliary standard device, and the lower end of the conductive tube is used to connect with the high-voltage arm of the lower auxiliary standard device.

[0010] The measuring layer switch and the shielding layer switch are both arranged in the inner cavity of the conductive cylinder;

[0011] The body of the measuring layer switch is used to connect to the upper measuring lead; the body of the shielding layer switch is used to connect to the inner shielding lead;

[0012] A lower measuring lead is further provided inside the conductive cylinder, and a first wiring terminal is provided on the lower measuring lead; a second wiring terminal is provided on the inner wall of the conductive cylinder;

[0013] When the movable part of the measuring layer switch is connected to the first wiring terminal and the shielding layer switch is suspended, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series;

[0014] When the movable part of the measuring layer switch is connected to the second terminal, and the movable part of the shielding layer switch is connected to the first terminal, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device work independently.

[0015] Furthermore, in the above-mentioned high-potential inflatable remote control switch for DC voltage proportional value traceability, the upper measuring lead passes through the upper cover of the conductive tube and extends upward from the conductive tube, so as to be connected to the measuring layer of the high-voltage arm of the upper auxiliary standard device; the lower shielding lead extends downward from the lower cover of the conductive tube and is connected to the inner shielding lead of the shielding layer switch, so as to be connected to the shielding layer of the high-voltage arm of the lower auxiliary standard device.

[0016] Furthermore, the high-potential gas-filled remote control switch for DC voltage proportional value traceability further comprises: an upper shielding lead and a lower measurement lead; wherein,

[0017] The upper shielding lead extends upward from the upper cover plate of the conductive cylinder to be connected to the shielding layer of the high-voltage arm of the upper auxiliary standard device.

[0018] Furthermore, in the above-mentioned high-potential inflatable remote control switch for DC voltage proportional value traceability, the part of the upper measuring lead passing through the conductive tube is provided with a first insulating sleeve, and the first insulating sleeve passes through the upper cover plate to insulate the upper measuring lead from the upper cover plate; the part of the lower measuring lead passing through the conductive tube is provided with a second insulating sleeve, and the second insulating sleeve passes through the lower cover plate to insulate the lower measuring lead from the lower cover plate.

[0019] Furthermore, in the above-mentioned high-potential gas-filled remote control switch for DC voltage proportional value traceability, a side measurement lead is passed through the outer wall of the conductive tube, and a third insulating sleeve is passed through the side measurement lead.

[0020] Furthermore, the high-potential gas-filled remote control switch for DC voltage proportional value traceability further comprises: a control device; wherein,

[0021] The control device is electrically connected to the measurement layer switch and the shielding layer switch, and is used to control the movable part of the measurement layer switch to be connected to the first terminal, and the shielding layer switch to be suspended; the control device is also used to control the movable part of the measurement layer switch to be connected to the second terminal, and the movable part of the shielding layer switch to be connected to the first terminal.

[0022] Furthermore, the high-potential gas-filled remote control switch for DC voltage proportional value traceability further comprises: a first drive mechanism and a second drive mechanism; wherein,

[0023] The output end of the first driving mechanism is insulated from the measurement layer switch, and the control device is electrically connected to the input end of the first driving mechanism to control the first driving mechanism to drive the measurement layer switch; the output end of the second driving mechanism is insulated from the shielding layer switch, and the control device is electrically connected to the input end of the second driving mechanism to control the second driving mechanism to drive the shielding layer switch.

[0024] Furthermore, the high-potential gas-filled remote control switch for DC voltage proportional value traceability further includes: a power supply unit; wherein,

[0025] The power supply unit is arranged on the outer side wall of the conductive cylinder, and is electrically connected to the control device, the first driving mechanism and the second driving mechanism to provide electrical energy to the three.

[0026] Furthermore, in the above-mentioned high-potential gas-filled remote control switch for DC voltage proportional value traceability, a power monitoring unit is provided in the control device, and the power monitoring unit is electrically connected to the power supply unit for obtaining power information of the power supply unit.

[0027] Furthermore, the above-mentioned high-potential gas-filled remote control switch for DC voltage proportional value traceability also includes: a remote module, which communicates with the control device and is used to send wireless control signals to the control device and receive power signals sent by the control device.

[0028] The high-potential inflatable remote control switch for tracing the DC voltage proportional value in the present invention realizes the separate use and series use of the upper auxiliary standard device high-voltage arm and the lower auxiliary standard high-voltage arm through the two working states of the measuring layer switch and the shielding layer switch. There is no need to move and install the upper auxiliary standard device high-voltage arm and the lower auxiliary standard device high-voltage arm, which can greatly reduce the experimental workload when calibrating the voltage coefficient of the DC voltage proportional standard value; by placing the measuring layer switch and the shielding layer switch in a closed conductive cylinder, the leakage current generated between the measuring resistance layer and the shielding resistance layer when the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series can be effectively reduced, which is beneficial to improving the accuracy of the voltage coefficient calibration result of the DC voltage proportional standard value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 A schematic diagram of a primary standard and an auxiliary standard for calibrating voltage coefficient in the prior art;

[0031] Figure 2 This is a schematic diagram of the high-voltage arms of the 1# auxiliary standard device and the 2# auxiliary standard device connected in series in the third step of the calibration test in the prior art;

[0032] Figure 3 A schematic structural diagram of a high-potential gas-filled remote control switch for DC voltage proportional value traceability provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the installation position of a high-potential gas-filled remote control switch for DC voltage proportional value traceability provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] See Figure 3The high-potential inflatable remote control switch for DC voltage proportional value traceability according to an embodiment of the present invention comprises: a conductive tube 1, a measuring layer switch 2 and a shielding layer switch 3; wherein, both ends of the conductive tube 1 are provided with covers to form a closed inner cavity, the upper end of the conductive tube 1 is used to connect with the high-voltage arm R1 of the upper auxiliary standard device, and the lower end of the conductive tube 1 is used to connect with the high-voltage arm R3 of the lower auxiliary standard device; the measuring layer switch 2 and the shielding layer switch 3 are both arranged in the inner cavity of the conductive tube 1; the body of the measuring layer switch 2 is used to connect with the upper measuring lead 4; the body of the shielding layer switch 3 is used to connect with the inner shielding lead 6; the A lower measuring lead 5 is also provided inside the conductive tube 1, and a first terminal B is provided on the lower measuring lead 5; a second terminal C is provided on the inner wall of the conductive tube 1; when the movable part of the measuring layer switch 2 is connected to the first terminal B and the shielding layer switch 3 is suspended, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series; when the movable part of the measuring layer switch 2 is connected to the second terminal C, and the movable part of the shielding layer switch 3 is connected to the first terminal B, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device work independently.

[0036] Specifically, the conductive tube 1 comprises an outer tube 10 and upper and lower covers 11 and 12 at its ends. These three components form a sealed space. By placing the measurement layer switch 2 and the shielding layer switch 3 within the sealed conductive tube 1, moisture from the air can effectively prevent the insulation components within the conductive tube 1 from being affected, thereby preventing moisture from causing increased leakage current. The outer tube 10, upper cover 11, and lower cover 12 are all made of metal. The upper and lower covers 11, 12 can be welded to the ends of the outer tube 10. The conductive tube 1 is provided with a gas inlet to facilitate filling with insulating gas. The inlet can be located on any of the outer walls of the outer tube 10, the upper cover 11, or the lower cover 12. The conductive tube 1 is filled with insulating gas, such as sulfur hexafluoride or nitrogen, which further increases the surface resistance of the insulation components within the switch, thereby reducing leakage current.

[0037] The area above the upper cover plate 11 of the conductive cylinder 1 is the high-voltage arm R1 of the upper auxiliary standard device, and the area below the lower cover plate 12 is the high-voltage arm R3 of the lower auxiliary standard device.

[0038] The measurement layer switch 2 and shielding layer switch 3 each comprise a connected body and a movable member. The body of the measurement layer switch 2 is connected to an upper measurement lead 4 for access to the high-voltage arm of the upper auxiliary standard device. Specifically, the upper measurement lead 4 passes through the upper cover 11 of the conductive cylinder 1 and extends upward, connecting to the measurement layer of the high-voltage arm of the upper auxiliary standard device.

[0039] The main body of the shielding layer switch 3 is connected to the inner shielding lead 6 for access to the high-voltage arm of the lower auxiliary standard device. More specifically, the lower shielding lead 7 extends downward from the lower cover 12 of the conductive cylinder 1 and is electrically connected to the inner shielding lead 6 of the shielding layer switch 3, for access to the shield layer of the high-voltage arm of the lower auxiliary standard device.

[0040] In this embodiment, it also includes: an upper shielding lead 8; wherein, the upper shielding lead 8 extends upward from the upper cover 11 of the conductive cylinder 1 to connect to the shielding layer of the high-voltage arm of the upper auxiliary standard device; the lower measuring lead 5 extends downward from the lower cover 12 of the conductive cylinder 1 to connect to the measuring layer of the high-voltage arm of the lower auxiliary standard device.

[0041] The lower measurement lead 5 and upper measurement lead 4 can be arranged opposite each other, with their extensions collinear. The upper shielding lead 8 and lower shielding lead 7 can be arranged opposite each other, with the upper shielding lead 8 extending above the upper cover 11 and the lower shielding lead 7 extending below the lower cover 12. The lower shielding lead 7 is electrically connected to the inner shielding lead 6 through the lower cover 12.

[0042] The lower measuring lead 5 extends from the interior of the conductive cylinder 1 to the bottom of the lower cover plate 12 to connect to the measuring layer of the high-voltage arm of the lower auxiliary standard device. The portion of the lower measuring lead 5 located inside the conductive cylinder 1 is provided with a first terminal B, and a second terminal C is further provided on the side wall of the outer cylinder 10. The second terminal C is arranged on one side of the first terminal B.

[0043] A third terminal A is provided on the body of the measurement layer switch 2, and a fourth terminal D is provided on the body of the shielding layer switch 3. When the movable part of the measurement layer switch 2 is connected to the first terminal B, and the shielding layer switch 3 is suspended, that is, point A and point B are in a closed state, and point C and point D are in a suspended state, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series. When the movable part of the measurement layer switch 2 is connected to the second terminal C, and the movable part of the shielding layer switch 3 is connected to the first terminal B, that is, point A and point C are in a closed state, and point B and point D are closed, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are in a state of separate use. In this embodiment, the actions of the measurement layer switch 2 and the shielding layer switch 3 can be performed manually or by automatic control principles.

[0044] Furthermore, the portion of the upper measuring lead 4 passing through the conductive tube 1 is provided with a first insulating sleeve 41, which passes through the upper cover 11 to insulate the upper measuring lead 4 from the upper cover 11; the portion of the lower measuring lead 5 passing through the conductive tube 1 is provided with a second insulating sleeve 51, which passes through the lower cover 12 to insulate the lower measuring lead 5 from the lower cover 12.

[0045] Furthermore, a side measurement lead 9 is passed through the outer wall of the conductive cylinder 1, and a third insulating sleeve 91 is passed through the side measurement lead 9 to achieve insulation from the conductive cylinder 1. The third insulating sleeve 91 passes through the wall of the conductive cylinder 1 from the inside to the outside.

[0046] Specifically, the connection location of the outer end of the side measurement lead 9 can be determined based on the operating status of the measurement layer switch 2 and the shielding layer switch 3. In this embodiment, the first insulating sleeve 41, the second insulating sleeve 51, and the third insulating sleeve 91 can all have the same structure, and can each include a cylindrical tube and caps connected to its ends. The first insulating sleeve 41, the second insulating sleeve 51, and the third insulating sleeve 91 constitute the entire internal insulation of the switch.

[0047] In this embodiment, an observation window 13 is provided on the side wall of the conductive tube 1 , so that a worker can observe the working status of the switch inside the conductive tube 1 .

[0048] It can be obviously concluded from the above that the high-potential inflatable remote control switch for DC voltage proportional value traceability provided in this embodiment realizes the separate use and series use of the upper auxiliary standard device high-voltage arm and the lower auxiliary standard high-voltage arm through the two working states of the measuring layer switch and the shielding layer switch. There is no need to move and install the upper auxiliary standard device high-voltage arm and the lower auxiliary standard device high-voltage arm, which can greatly reduce the experimental workload when calibrating the voltage coefficient of the DC voltage proportional standard value; by placing the measuring layer switch and the shielding layer switch in a closed conductive tube, the leakage current generated between the measuring resistance layer and the shielding resistance layer when the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series can be effectively reduced, which is beneficial to improving the accuracy of the voltage coefficient calibration result of the DC voltage proportional standard value.

[0049] The above embodiment further includes: a control device 14; wherein the control device 14 is electrically connected to the measurement layer switch 2 and the shielding layer switch 3, and is used to control the movable part of the measurement layer switch 2 to be connected to the first wiring terminal B, and the shielding layer switch 3 to be suspended; the control device 14 is also used to control the movable part of the measurement layer switch 2 to be connected to the second wiring terminal C, and the movable part of the shielding layer switch 3 to be connected to the first wiring terminal B. The control device 14 can be a processor such as a single-chip microcomputer. In practice, the control device 14 can be installed on the outer wall of the conductive tube 1. The outside of the control device 14 is wrapped with a metal shell, and the metal shell outside the control device 14 is electrically connected to the conductive tube 1 to form an equipotential, ensuring that the control device 14 can work normally under high potential.

[0050] The above embodiments may also include: a first driving mechanism 15 and a second driving mechanism 16; wherein, the output end of the first driving mechanism 15 is insulated from the measurement layer switch 2, and the control device 14 is electrically connected to the input end of the first driving mechanism 15, so as to control the first driving mechanism 15 to drive the measurement layer switch 2 to operate; the output end of the second driving mechanism 16 is insulated from the shielding layer switch 3, and the control device 14 is electrically connected to the input end of the second driving mechanism 16, so as to control the second driving mechanism 16 to drive the shielding layer switch 3 to operate.

[0051] Specifically, the first driving mechanism 15 is arranged on the inner side of the upper cover 11 of the conductive cylinder 1 close to the measuring layer switch 2; and / or the second driving mechanism 16 is arranged on the inner side of the lower cover 12 of the conductive cylinder 1 close to the shielding layer switch 3.

[0052] Preferably, the first driving mechanism 15 is a stepping motor; and / or the second driving mechanism 16 is a stepping motor.

[0053] Specifically, the first driving mechanism 15 is wrapped with a metal shell. The metal shell outside the first driving mechanism 15 is electrically connected to the conductive tube 1 to form an equipotential, ensuring that the first driving mechanism 15 can work normally under high potential.

[0054] Similarly, the second driving mechanism 16 is wrapped with a metal shell. The metal shell outside the second driving mechanism 16 is electrically connected to the conductive tube 1 to form an equipotential, ensuring that the second driving mechanism 16 can work normally under high potential.

[0055] During specific implementation, the control device 14 can control the first driving mechanism 15 to rotate forward to the maximum forward angle or reverse to the maximum reverse angle. When the first driving mechanism 15 rotates forward, it will drive the movable part of the measuring layer switch 2 to rotate around point A and gradually approach point B. When the first driving mechanism 15 rotates forward to the maximum forward angle, the movable part of the measuring layer switch 2 is just electrically connected to the upper end of the lower measuring lead 5 at point B; when the first driving mechanism 15 rotates reversely, it will drive the movable part of the measuring layer switch 2 to rotate around point A and gradually approach point C. When the first driving mechanism 15 rotates reversely to the maximum reverse angle, the movable part of the measuring layer switch 2 is just electrically connected to the inner end of the side measuring lead 9 at point C. Of course, the control device 14 can also control the first driving mechanism 15 to rotate in the forward direction to the maximum angle, driving the movable part of the measuring layer switch 2 to rotate around point A and gradually approach point C; the control device 14 can control the first driving mechanism 15 to rotate in the reverse direction to the maximum angle, driving the movable part of the measuring layer switch 2 to rotate around point A and gradually approach point B.

[0056] Similarly, the control device 14 can also control the second driving mechanism 16 to rotate forward to the maximum forward angle or reverse to the maximum reverse angle. When the second driving mechanism 16 rotates forward, it will drive the movable part of the shielding layer switch 3 to rotate around point D and gradually approach point B. When the second driving mechanism 16 rotates forward to the maximum forward angle, the movable part of the shielding layer switch 3 is just electrically connected to the upper end of the lower measuring lead 5 at point B; when the second driving mechanism 16 rotates reversely, it will drive the movable part of the shielding layer switch 3 to rotate around point D, so that the shielding layer switch 3 gradually moves away from point B. When the second driving mechanism 16 rotates reversely to the maximum reverse angle, the movable part of the shielding layer switch 3 is in a suspended state. Similarly, the control device 14 can control the second driving mechanism 16 to rotate in the forward direction to the maximum angle, thereby driving the movable part of the shielding layer switch 3 to rotate around point D and gradually move away from point B; the control device 14 can control the second driving mechanism 16 to rotate in the reverse direction to the maximum angle, thereby driving the movable part of the shielding layer switch 3 to rotate around point D and gradually approach point B.

[0057] Continue reading Figure 3 , the above embodiments further include: a power supply unit 17; wherein the power supply unit is arranged on the outer wall of the conductive cylinder 1, and the power supply unit is electrically connected to the control device 14, the first drive mechanism 15 and the second drive mechanism 16, for providing electrical energy to the three.

[0058] Specifically, the interior of the power supply unit 17 is a rechargeable battery pack with a charging interface, and the exterior of the power supply unit is wrapped with a metal shell. The metal shell outside the power supply unit 17 is electrically connected to the conductive tube 1 to form an equipotential, ensuring that the power supply unit can work normally under high potential.

[0059] Preferably, the control device 14 is provided with a power monitoring unit, and the power monitoring unit is electrically connected to the power supply unit and is used to obtain power information of the power supply unit.

[0060] Each of the above embodiments may further include: a remote module 18 ; wherein the remote module communicates with the control device 14 , and is configured to send wireless control signals to the control device 14 and receive power signals sent by the control device 14 .

[0061] Specifically, the remote module operates at a low voltage and can send wireless control signals to the control device 14 and receive wireless signals from the control device 14. Wireless transmission between the remote module and the control device 14 uses Bluetooth, infrared, Wi-Fi, or radio frequency signals. The power monitoring unit is wirelessly connected to the remote module and transmits the power supply unit's real-time power signal to the remote module. This allows the remote module to issue a warning signal when the power supply unit's power level drops below a certain threshold, facilitating personnel to recharge the power supply unit or replace the charging unit.

[0062] During specific implementation, the remote module sends a wireless control signal to the control device 14. The control device 14 sends a forward rotation signal to the first drive mechanism 15 and a reverse rotation signal to the second drive mechanism 16 according to the received wireless control signal. Alternatively, the control device 14 sends a reverse rotation signal to the first drive mechanism 15 and a forward rotation signal to the second drive mechanism 16, respectively, so that the switch group consisting of the measurement layer switch 2 and the shielding layer switch 3 operates in two working states: one is that the other end of the measurement layer switch 2 is electrically connected to the upper end of the lower measurement lead 5 at point B, And the other end of the shielding layer switch 3 is in a suspended state, at this time point A and point B are in a closed state, at this time, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard are used in series; the other is that the other end of the measuring layer switch 2 is electrically connected to the inner end of the measuring lead at point C, and the other end of the shielding layer switch 3 is electrically connected to the upper end of the lower measuring lead 5 at point B, at this time point A and point C are in a closed state, and point B and point D are also in a closed state, at this time, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard are used separately.

[0063] The following is an example of a calibration test of the proportional value voltage coefficient of a 1000kV DC voltage proportional standard device. The switch of the present invention is used to connect the high-voltage arm R1 of the 500kV upper auxiliary standard device and the high-voltage arm R3 of the 500kV lower auxiliary standard device. Figure 4 shown.

[0064] (1) The remote module sends a control signal to the control device 14. The control device 14 controls the first drive mechanism 15 to operate. The first drive mechanism 15 drives the measurement layer switch 2, so that the other end of the measurement layer switch 2 is electrically connected to the inner end of the side measurement lead 9 at point C. The control device 14 controls the second drive mechanism 16 to operate. The second drive mechanism 16 drives the shielding layer switch 3, so that the other end of the shielding layer switch 3 is electrically connected to the upper end of the lower measurement lead 5 at point B. At this time, points A and C are in a closed state, and points B and D are also in a closed state. The high-voltage arm R1 of the 500kV upper section auxiliary standard device and the high-voltage arm R3 of the 500kV lower section auxiliary standard device are in a separate use state. The lower cover plate 12 is grounded, and the grounding end of the high-voltage arm R3 of the 500kV lower section auxiliary standard device is grounded at the same time. At this time, the high-voltage arm R3 of the 500kV lower section auxiliary standard device is in an overall short-circuited grounding state. Connect the outer end of the side measurement lead 9 to the low-voltage arm r2 of the 500kV upper section auxiliary standard device to form a 500kV upper section auxiliary standard device, and use the 500kV upper section auxiliary standard device to calibrate the 1000kV DC voltage proportional standard device.

[0065] (2) The remote module sends a control signal to the control device 14. The control device 14 controls the first drive mechanism 15 to operate. The first drive mechanism 15 drives the measurement layer switch 2, so that the other end of the measurement layer switch 2 is electrically connected to the inner end of the side measurement lead 9 at point C. The control device 14 controls the second drive mechanism 16 to operate. The second drive mechanism 16 drives the shielding layer switch 3, so that the other end of the shielding layer switch 3 is electrically connected to the upper end of the lower measurement lead 5 at point B. At this time, points A and C are in a closed state, and points C and D are also in a closed state. The high-voltage arm R1 of the 500kV upper section auxiliary standard device and the high-voltage arm R3 of the 500kV lower section auxiliary standard device are in a separate use state. After the outer end of the side measurement lead 9 is electrically connected to the upper cover plate 11, it is connected to high voltage. At the same time, the high-voltage end of the high-voltage arm R1 of the 500kV upper section auxiliary standard device is connected to high voltage. At this time, the high-voltage arm R1 of the 500kV upper section auxiliary standard device is in a state of overall short circuit and high voltage connection. The high voltage arm R3 of the 500kV lower section auxiliary standard device is connected in series with the low voltage arm r4 of the 500kV lower section auxiliary standard device to form a 500kV lower section auxiliary standard device, and the 500kV lower section auxiliary standard device is used to calibrate the 1000kV DC voltage ratio standard device.

[0066] (3) The remote module sends a control signal to the control device 14. The control device 14 controls the first drive mechanism 15 to operate. The first drive mechanism 15 drives the measurement layer switch 2, so that the other end of the measurement layer switch 2 is electrically connected to the upper end of the lower measurement lead 5 at point B. The control device 14 controls the second drive mechanism 16 to operate. The second drive mechanism 16 drives the shielding layer switch 3, so that the other end of the shielding layer switch 3 is in a suspended state. At this time, points A and B are in a closed state, and points C and D are in a suspended state. The high-voltage arm R1 of the 500kV upper section auxiliary standard device and the high-voltage arm R3 of the 500kV lower section auxiliary standard device are in a series use state. Connect the high-voltage terminal of the high-voltage arm R1 of the 500kV upper auxiliary standard device to high voltage. Connect the low-voltage terminal of the high-voltage arm R3 of the 500kV lower auxiliary standard device in series with the low-voltage arm r2 of the 500kV upper auxiliary standard device and the low-voltage arm r4 of the 500kV lower auxiliary standard device, forming a (500kV + 500kV) series auxiliary standard device. Use this (500kV + 500kV) series auxiliary standard device to calibrate the 1000kV DC voltage proportional standard device. To prevent the side measurement lead 9 from forming a floating potential, the outer end of the side measurement lead 9 can be electrically connected to the conductive cylinder 1.

[0067] After the above three-step test, the proportional value voltage coefficient of the 1000kV DC voltage proportional standard device is obtained.

[0068] In summary, the inflatable remote control switch provided by the present invention, by controlling the wireless control signal sent by the remote module, enables the switch group composed of the measurement layer switch and the shielding layer switch to operate in two working states, realizing the separate use and series use of the upper section auxiliary standard device high voltage arm and the lower section auxiliary standard high voltage arm, without the need to move and install the upper section auxiliary standard device high voltage arm and the lower section auxiliary standard high voltage arm, which can greatly reduce the experimental workload when calibrating the voltage coefficient of the DC voltage proportional standard value; the entire switch is in a sealed state, and the moisture in the air has almost no effect on the insulating parts inside the switch, and there is no problem of increased leakage current due to moisture in the insulating parts. At the same time, the interior of the switch is filled with sulfur hexafluoride gas or nitrogen, which will further increase the surface resistance of the insulating parts inside the switch, which is conducive to reducing leakage current and improving the accuracy of the voltage coefficient calibration results of the DC voltage proportional standard value.

[0069] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A high-potential gas-filled remote control switch for DC voltage proportional value traceability, characterized in that: include: Conductive tube, measuring layer switch, shielding layer switch, upper shielding lead and lower shielding lead; wherein, Both ends of the conductive tube are provided with covers to form a closed inner cavity. The upper end of the conductive tube is used to connect with the high-voltage arm of the upper auxiliary standard device, and the lower end of the conductive tube is used to connect with the high-voltage arm of the lower auxiliary standard device. The measuring layer switch and the shielding layer switch are both arranged in the inner cavity of the conductive cylinder; The body of the measuring layer switch is used to connect to the upper measuring lead; the body of the shielding layer switch is used to connect to the inner shielding lead; the upper measuring lead passes through the upper cover of the conductive cylinder and extends above the conductive cylinder to connect to the measuring layer of the high-voltage arm of the upper auxiliary standard device; The upper shielding lead extends upward from the upper cover plate of the conductive cylinder to connect to the shielding layer of the high-voltage arm of the upper auxiliary standard device; The lower shielding lead extends downward from the lower cover of the conductive cylinder and is connected to the inner shielding lead of the shielding layer switch, and is used to connect to the shielding layer of the high-voltage arm of the lower auxiliary standard device; A lower measuring lead is further provided inside the conductive cylinder, and a first terminal is provided on the lower measuring lead; a second terminal is provided on the inner wall of the conductive cylinder; the lower measuring lead extends from the interior of the conductive cylinder to below the lower cover of the conductive cylinder, and is used to connect to the measuring layer of the high-voltage arm of the lower auxiliary standard device; When the movable part of the measuring layer switch is connected to the first wiring terminal and the shielding layer switch is suspended, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device are connected in series; When the movable part of the measuring layer switch is connected to the second terminal, and the movable part of the shielding layer switch is connected to the first terminal, the high-voltage arm of the upper auxiliary standard device and the high-voltage arm of the lower auxiliary standard device work independently.

2. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 1, characterized in that: The portion of the upper measuring lead passing through the conductive cylinder is provided with a first insulating sleeve, which passes through the upper cover plate to insulate the upper measuring lead from the upper cover plate; the portion of the lower measuring lead passing through the conductive cylinder is provided with a second insulating sleeve, which passes through the lower cover plate to insulate the lower measuring lead from the lower cover plate.

3. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 1, characterized in that: A side measuring lead is passed through the outer wall of the conductive cylinder, and a third insulating sleeve is passed through the side measuring lead.

4. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 1, characterized in that: Also includes: control device; wherein, The control device is electrically connected to the measurement layer switch and the shielding layer switch, and is used to control the movable part of the measurement layer switch to be connected to the first terminal, and the shielding layer switch to be suspended; the control device is also used to control the movable part of the measurement layer switch to be connected to the second terminal, and the movable part of the shielding layer switch to be connected to the first terminal.

5. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 4, characterized in that: Also includes: A first driving mechanism and a second driving mechanism; wherein, The output end of the first driving mechanism is insulated from the measurement layer switch, and the control device is electrically connected to the input end of the first driving mechanism to control the first driving mechanism to drive the measurement layer switch; the output end of the second driving mechanism is insulated from the shielding layer switch, and the control device is electrically connected to the input end of the second driving mechanism to control the second driving mechanism to drive the shielding layer switch.

6. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 5, characterized in that: Also includes: A power supply unit; wherein, The power supply unit is arranged on the outer side wall of the conductive cylinder, and is electrically connected to the control device, the first driving mechanism and the second driving mechanism to provide electrical energy to the three.

7. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 6, characterized in that: The control device is provided with a power monitoring unit, which is electrically connected to the power supply unit and is used to obtain power information of the power supply unit.

8. The high-potential gas-filled remote control switch for DC voltage proportional value traceability according to claim 7, characterized in that: Also includes: The remote module communicates with the control device and is used to send wireless control signals to the control device and receive power signals sent by the control device.

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