CN108205084B - Electrostatic probe control mechanism and method for measuring surface potential of complex insulation structure - Google Patents
Electrostatic probe control mechanism and method for measuring surface potential of complex insulation structure Download PDFInfo
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- CN108205084B CN108205084B CN201711484405.7A CN201711484405A CN108205084B CN 108205084 B CN108205084 B CN 108205084B CN 201711484405 A CN201711484405 A CN 201711484405A CN 108205084 B CN108205084 B CN 108205084B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R29/24—Arrangements for measuring quantities of charge
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Abstract
The invention discloses an electrostatic probe control mechanism and method for measuring surface potential of a complex insulation structure. One end of the insulating connecting rod is used for being connected with the basin to be tested in an assembling mode, and the other end of the insulating connecting rod is connected with the rotating shaft through the transmission assembly, so that the basin to be tested is driven to rotate in an assembling mode. The electrostatic probe motion measurement mechanism can move in a horizontal direction and a vertical direction in a translation mode and rotate in a vertical plane. The rotation of the measured basin assembly is matched with the movement of the electrostatic probe movement measuring mechanism, so that the full-coverage measurement of the measured basin assembly is realized. The measured basin assembly and the electrostatic probe movement measuring mechanism are respectively provided with an external control mechanism for controlling the movement of the measured basin assembly and the electrostatic probe movement measuring mechanism.
Description
Technical Field
The invention relates to the technical field of charge measurement, in particular to a control mechanism and a method for an electrostatic probe for measuring the surface potential of a complex insulating structure.
Background
With the development of the direct-current power transmission technology, a direct-current Gas Insulated Switchgear (GIS) receives more and more attention due to the advantages of small occupied area, high system operation reliability, low operation and maintenance cost and the like. However, the surface of the GIS insulator can accumulate a large amount of charges under the direct current condition to cause distortion of the electric field around the insulator, so that the surface endurance of the insulator is reduced. The measurement of the distribution and magnitude of the surface charge of the insulator is helpful for clarifying the mechanism of charge accumulation, thereby providing theoretical support for the surface charge inhibition of the insulator and the shape optimization of the insulator.
Disclosure of Invention
Based on the above, under the existing technical conditions, a control mechanism and a method for an electrostatic probe for measuring the surface potential of a complex insulation structure are provided, and the mechanism and the method can simultaneously measure the surface charge distribution of the concave surface and the convex surface of the insulator.
An electrostatic probe control mechanism for measuring surface potential of a complex insulation structure comprises a measured basin assembly (9), an insulation connecting rod (11), a transmission assembly (12), a driving assembly (13) and an electric connection part (14); the driving assembly (13) is provided with a rotating shaft, the rotating shaft is connected with the transmission assembly (12), one end of the insulating connecting rod (11) is used for being connected with the measured basin assembly (9), and the other end of the insulating connecting rod is connected with the rotating shaft through the transmission assembly (12), so that the measured basin assembly (9) is driven to rotate, and the measured basin assembly (9) can be matched with the electrostatic probe motion measuring mechanism to perform scanning measurement on the surface of the measured basin assembly;
the device also comprises an iron casting hand wheel (4), a shaft seal assembly (5), a conducting rod (18), a conductor support (20), a transmission mechanism (19) and an insulating pull rod (7); an iron casting hand wheel (4) is connected with a shaft seal assembly (5), one end of an insulating pull rod (7) is connected with the shaft seal assembly (5), the other end of the insulating pull rod (7) is connected with a transmission mechanism (19), one end of a conductive rod (18) is connected with the transmission mechanism (19), the other end of the conductive rod (18) is connected with a basin assembly (9) to be tested, and the interior of a conductor support (20) is hollow;
the device is characterized by further comprising a basin-type insulating cover (1), a transition cylinder (2), a special test cylinder (3), a cover plate assembly (6), a cover plate (8), an end cover plate (10), a side auxiliary cavity (15) and a mounting plate (16), wherein one end of the transition cylinder (2) is connected with the basin-type insulating cover (1), the other end of the transition cylinder is welded with the special test cylinder (3), and the cover plate assembly (6) and the cover plate (8) are mounted in the middle of the special test cylinder (3); the end cover plate (10) is arranged at the bottom of the special test barrel body (3), one end of the side auxiliary cavity (15) is welded with the special test barrel body (3), and the mounting plate (16) is arranged at the other end of the side auxiliary cavity (15); a closed test environment is formed by the method so as to keep the gas environment inside the cavity stable;
the device also comprises an electrostatic probe movement measuring mechanism (17); the electrostatic probe movement measuring mechanism (17) is arranged in the side abdominal cavity (15) and is fixed on the mounting plate (16).
The electrostatic probe movement measuring mechanism further comprises a first photoelectric switch (21), a first rotating motor (22), a sliding rod (23), an electrostatic probe (24), a clamp (25), a screw rod (26), a cylinder shell (27), a rotating shaft (28), a second photoelectric switch (29), a support (30), a second rotating motor (31), a large screw rod (32), a sliding block unit (33), a sliding block connecting plate (34), a third rotating motor (35) and a third photoelectric switch (36); the first photoelectric switch (21) is mounted on the barrel shell (27), the first rotating motor (22) is mounted on the outer side of the support (30), one end of the rotating shaft (30) is connected with the inner side of the support (30), the other end of the rotating shaft is connected with the clamp (25), the electrostatic probe is clamped by the clamp (25), and the movement of the rotating shaft (28) can drive the electrostatic probe to rotate; the sliding rod (23) is sleeved outside the screw rod (26), the screw rod and the screw rod are both packaged in the cylinder shell, and the sliding rod (23) can move in a vertical plane so as to drive the electrostatic probe to move in the vertical direction; the slider unit (33) is horizontally arranged on the mounting plate (16) and sleeved outside the large screw rod (32), the slider unit (33) is connected through the slider connecting plate, and the slider unit (33) can move in the horizontal direction so as to drive the electrostatic probe to move in the horizontal direction.
The first rotating motor (22), the second rotating motor (31) and the third rotating motor (35) drive the electrostatic probe to rotate and move in the horizontal direction and the vertical direction; the photoelectric switch I (21), the photoelectric switch II (29) and the photoelectric switch III (36) are used for correcting the initial positions of the electrostatic probe moving in three directions, and the electrostatic probe is ensured to be located at the same position before each measurement is started.
The device also comprises a control assembly, wherein the control assembly comprises an acquisition display terminal (37), a control power distribution cabinet (38) and a man-machine interface (39); the acquisition display terminal (37) is used for acquiring a detected signal, the control power distribution cabinet (38) is used for controlling the rotating motion direction, the rotating speed and the rotating angle of the assembly of the detected basin, and in addition, the control power distribution cabinet is also used for controlling the ascending and descending of the motion mechanism and the rotation of the electrostatic probe; the man-machine interface (39) provides three instructions for the user to start, stop and reset.
The end part of the conducting rod (18) can move to a position 250mm away from the surface of the insulator by rotating the iron casting hand wheel (4) through the transmission mechanism (19).
The tested basin assembly (9) further comprises a supporting component, and the supporting component is mounted on the inner wall of the special test barrel body (3) and used for rolling and supporting the tested basin assembly.
The basin assembly (9) to be tested belongs to a detachable structure and is suitable for different basin structures.
The transmission assembly (12) further comprises a sealing element and a guide sleeve, the guide sleeve is provided with a groove, and the sealing element is arranged in the groove.
Still include outside support frame, the support frame is used for supporting by basin formula insulating cover (1), transition barrel (2), experimental special barrel (3), apron assembly (6), apron (8), tip apron (10), side attach chamber (15), mounting panel (16) the sealed jar of body that forms, and adjustable the height to the ground of the sealed jar of body.
A method for measuring the surface potential of a complex insulating structure based on the electrostatic probe control mechanism comprises the following steps:
treating the surface of the tested basin assembly (9), wiping the surface with absolute ethyl alcohol and naturally drying the surface to ensure that no charge exists on the surface;
an external circuit is connected to the electric connection part (14) and the conducting rod (18), before an experiment, the air tightness of the insulator surface charge measurement system needs to be detected to be good, a closed space formed by the basin-type insulating cover (1), the transition cylinder (2), the special test cylinder (3), the cover plate assembly (6), the cover plate (8), the end cover plate (10), the side auxiliary cavity (15) and the mounting plate (16) is vacuumized, and is subjected to gas washing by using dry gas, and finally, the dry insulating gas with 0.3MPa is filled;
applying voltage to the circuit, wherein the positive and negative of the voltage at the two ends of the tested basin assembly (9) are determined by an external circuit; during pressurization, the conductive rod (18) keeps in contact with the surface of the measured basin assembly (9), the reset interface of the man-machine interface (39) is pressed to keep each movement axis at an initial position, and the electrostatic probe movement measuring mechanism (17) keeps the electrostatic probe (24) retracted into the abdominal cavity to prevent the electrostatic probe from being damaged by high-voltage breakdown;
after pressurization is finished, rotating the iron casting hand wheel (4) to enable the conducting rod (18) to be retracted into the conductor support (20), and keeping the distance between the front section of the conducting rod (18) and the surface of the basin assembly (9) to be measured to be 250 mm;
pressing a start button on a man-machine interface (39), enabling the measured basin assembly (9) and the electrostatic probe movement measuring mechanism (17) to move according to a movement track set by a program, and enabling a measured signal to be collected by a collection display terminal (37);
when extracting the signal, the measuring signal corresponding to the high-level reference signal is the required measuring signal;
in the measurement process, if any emergency occurs, a stop button on the man-machine interface (39) can be pressed to stop the measurement process at any time, and a reset button on the man-machine interface (39) is pressed to return the electrostatic probe movement measurement mechanism (17) to the initial position.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the existing surface charge research objects are generally scaled insulator models (such as cylindrical insulators, truncated cone insulators, flat insulators and insulating material films), and the research on real basin-type insulators is relatively lacked. Because basin type insulator structure is complicated, also lacks the effectual measuring structure of basin type insulator, and current measuring equipment can only measure basin type insulator single face, because charge accumulation can produce the distortion to the electric field, consequently carry out the full coverage measurement to insulator surface charge and be favorable to clarifying the mechanism and the engineering practical application that the charge accumulated to the structure of insulator is optimized.
The device can simultaneously measure the concave surface and the convex surface of the basin-type insulator, the designed measuring mechanism can realize full-coverage measurement of the basin-type insulator through the three-dimensional movement of the probe moving mechanism and the matching of the insulator rotating mechanism, and all measuring processes realize automatic measurement through the designed control circuit.
In order to ensure the motion space of the concave surface probe, the device adopts a mechanical structure so that the concave surface side electrode can be stretched to a position 250mm away from the bottom of the insulator.
The designed tank body can simulate the operation environment of a real GIS (gas combination insulated switch), provides a butt joint interface with the real GIS, and ensures that the experimental environment is more suitable for engineering practice.
The basin-type insulator to be tested can be detached, and basin-type insulators in different shapes can be measured.
Drawings
FIG. 1 is a schematic cross-sectional view of an electrostatic probe control mechanism for measuring surface potential of a complex insulation structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a motion measurement mechanism for an electrostatic probe;
FIG. 3 is a functional schematic diagram of a control system of the motion measurement mechanism of the electrostatic probe;
1. the device comprises a basin-type insulating cover, 2, a transition cylinder, 3, a special test cylinder, 4, a cast iron hand wheel, 5, shaft seal assembly, 6, cover plate assembly, 7, a direct current insulating pull rod, 8, a cover plate, 9, a tested basin assembly, 10, an end cover plate, 11, an insulating connecting rod, 12, a transmission assembly, 13, a driving assembly, 14, an electric connection part, 15, a side cavity, 16, a mounting plate, 17, an electrostatic probe motion measuring mechanism, 18, a conductive rod, 19, a transmission mechanism, 20, a conductor support, 21, a photoelectric switch I, 22, a rotary motor I, 23, a sliding rod, 24, an electrostatic probe, 25, a clamp, 26, a lead screw, 27, a cylinder shell, 28, a rotating shaft, 29, a photoelectric switch II, 30, a support, 31, a rotary motor II, 32, a large lead screw, 33, a sliding block, 34, a sliding block connecting plate, 35, a rotary motor III, 36, a photoelectric switch III, 37, Acquisition display terminal, 38, control switch board, 39, man-machine interface.
Detailed Description
The embodiment of the invention provides an electrostatic probe control mechanism for measuring the surface potential of a complex insulation structure, which is used for measuring the distribution of the surface charge of a GIS basin-type insulator. To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.
As shown in fig. 1, the electrostatic probe control mechanism for measuring the surface potential of a complex insulation structure includes: 9, assembling a basin to be tested, 11 insulating connecting rods, 12 transmission components, 13 driving components and 14 electric connection parts. The 13 driving component is provided with a rotating shaft, and the rotating shaft is connected with the 12 transmission components. 11 insulating connecting rod's one end is used for being connected by assembly with 9 basins under test, and the other end passes through drive assembly 12 and is connected with the rotating shaft to it is rotatory to drive 9 basins under test assemblies, makes 9 basins under test assemblies can cooperate the motion measurement mechanism of electrostatic probe to implement the scanning measurement to its surface.
Further, the assembly of the basin to be tested adopts a detachable structure, so that the device can be used for measuring different insulator structures.
Specifically, the 13 driving assembly comprises a rotating motor and a control system thereof, so that the 13 driving assembly can accurately control 9 the rotating direction, the rotating angle and the rotating speed of the basin assembly to be tested.
In the foregoing embodiment, the insulator surface charge measurement system further includes a 4-iron cast handwheel, a 5-shaft seal assembly, 18 conductive rods, 19 transmission mechanisms, 20 conductor supports, and 7 insulating pull rods. 4 cast iron hand wheel and 5 bearing seal assembly connections, 7 insulating pull rod one end and 5 bearing seal assembly connections, 7 insulating pull rod other ends and 19 drive mechanism are connected, 18 conducting rod one end and 19 drive mechanism are connected, 18 conducting rod other ends and 9 surveyed basins assembly connections, 20 conductor support inside cavity.
Further, on the basis of the foregoing embodiment, the insulator surface charge measurement system further includes a 1-pot insulating cover, a 2-transition cylinder, a 3-test-dedicated cylinder, a 6-cover-plate assembly, an 8-cover plate, a 10-end-part cover plate, a 15-side auxiliary cavity, and a 16-mounting plate, wherein one end of the 2-transition cylinder is connected with the 1-pot insulating cover, the other end of the 2-transition cylinder is welded with the 3-test-dedicated cylinder, and the 6-cover-plate assembly and the 8-cover plate are mounted in the middle of the 3-. The 10 end cover plate is arranged at the bottom of the 3 test special barrel, one end of the 15 side auxiliary cavity is welded with the 3 test special barrel, and the 16 mounting plate is arranged at the other end of the 15 side auxiliary cavity. The transition cylinder 2, the test special cylinder 3, the side auxiliary cavity 15 and the airtight metal tank body can bear certain air pressure. 1 basin formula insulating cover, 6 apron assemblies, 8 apron, 10 tip apron, 16 mounting panels encapsulate 2 transition barrels, 3 special barrels of experiment, 15 side attach the chamber to keep the gaseous environment of cavity inside stable, thereby simulate real GIS operational environment.
Further, in addition to the above embodiments, the insulator surface charge measurement system further includes 17 electrostatic probe movement measurement mechanisms, and the 17 electrostatic probe movement measurement mechanisms are installed in the 15 side abdominal cavities and fixed on the 16 mounting plates.
Further, 1 basin formula insulating cover, 6 apron assembly, 8 apron, 10 tip apron, 16 mounting panels, 2 transition barrels, 3 test special barrel, 15 side attach the sealed jar body that the chamber formed and lift by an outside mobilizable support dolly, the dolly wheel can pin, and support height-adjustable.
Specifically, as shown in fig. 2, the 17-electrostatic probe movement measuring mechanism specifically comprises a first 21-photoelectric switch, a first 22-rotary motor, a first 23-slide rod, a 24-electrostatic probe, a 25-clamp, a 26-screw rod, a 27-cylinder shell, a 28-rotation shaft, a second 29-photoelectric switch, a 30-support, a second 31-rotary motor, a 32-large screw rod, a 33-slider unit, a 34-slider connecting plate, a third 35-rotary motor and a third 36-photoelectric switch. The first photoelectric switch 21 is arranged on the barrel shell 27, the first rotary motor 22 is arranged on the outer side of the bracket 30, one end of the rotary shaft 28 is connected with the inner side of the bracket 29, the other end of the rotary shaft 28 is connected with the clamp 25, the electrostatic probe 24 is clamped by the clamp 25, and the movement of the rotary shaft 28 can drive the electrostatic probe 14 to rotate. The 23 slide bar sleeve and the 26 screw rod are arranged outside the screw rod, the two are encapsulated in the 27 sleeve, and the 23 slide bar can move in a vertical plane, so that the 24 electrostatic probe is driven to move in a vertical direction. The 33 sliding block unit is horizontally placed on the 16 mounting plate and sleeved outside the 32 large screw rod, the 33 sliding block unit is connected through a 34 sliding block connecting plate, and the 33 sliding block unit can move in the horizontal direction, so that the 24 electrostatic probe is driven to move in the horizontal direction. 22, 31, 33 and 24 drive the electrostatic probe to rotate, and move horizontally and vertically. The first 21 photoelectric switch, the second 29 photoelectric switch and the third 36 photoelectric switch are used for correcting the initial position of the 24 electrostatic probe in three directions so as to ensure that the 24 electrostatic probe is in the same position before each measurement is started.
In the foregoing embodiment, as shown in fig. 1, to implement simultaneous measurement of the concave surface and the convex surface of the insulator, the 4-iron cast handwheel is rotated to drive 7 the dc insulation pull rod to rotate, and the 18 conductive rod can be moved into 20 conductive rods through the 19 transmission mechanism, and the end of the 18 conductive rod is lifted to a position 250mm away from the surface of the insulator, so as to provide a sufficient measurement space for the electrostatic probe movement measurement mechanism.
In the foregoing embodiment, as shown in fig. 3, the electrostatic probe control mechanism for measuring the surface potential of the complex insulation structure further includes a control system of a 13-driving device and a 17-electrostatic probe movement measuring mechanism. The control system comprises a 37 acquisition display terminal, a 38 control power distribution cabinet and a 39 man-machine interface. The signal that 24 electrostatic probes measured is gathered and is displayed to 37 collection display terminals, 38 control switch boards are by PLC, IO module and constitute for compile the control program of electrostatic probes motion measurement mechanism, and 39 human-computer interfaces provide the user and start, stop, reset three kinds of instructions.
On the previous embodiment, the rotation speed of the tested basin assembly is set 9 to be 1rms, and the distance 9 between the surface of the tested basin assembly and the surface of the tested basin assembly can be kept 3mm all the time during measurement by the electrostatic probe. When the active probe method is used for measuring the surface charge, the probe needs to be kept vertical to the surface of the insulator, and because the actual insulator structure is complex, the assembly angle of the 24 electrostatic probes and the 9 tested basin can be kept at 90 degrees +/-30 degrees. This setting ensures that full coverage measurements of the insulator surface are achieved within 5 minutes. During measurement, the 24 electrostatic probe moves to a position 3mm away from the assembly surface of the 9 measured basin and keeps vertical, the insulator rotates 360 degrees at the same time, after a required signal is measured, the insulator stops rotating, the 17 electrostatic probe moves the measuring mechanism to adjust the attitude of the 24 electrostatic probe, then the 9 measured basin is assembled and rotates again, and the process is repeated until the surface of the insulator is completely measured.
Further, when the basin to be measured 9 is assembled and rotated, the 37 acquisition display terminal can receive a high-level reference signal, and the 37 acquisition display terminal can receive a low-level reference signal during the posture adjustment of the 17 electrostatic probe movement measuring mechanism, so that the extraction of the measurement signal is facilitated, and the continuous measurement is realized.
In the foregoing embodiment, the present invention provides a method for determining a motion trajectory of a 17-electrostatic probe motion measurement mechanism, including:
determining that 21 the first photoelectric switch, 29 the second photoelectric switch and 36 the third photoelectric switch are all in the initial positions;
establishing a rectangular coordinate system by taking the center of the 24 electrostatic probe measuring surface as an original point, and taking the horizontal movement direction of the 7 electrostatic probe movement measuring mechanism as an x axis and the vertical movement direction as a y axis;
selecting 9 surface arcs of the basin to be tested, which are assembled in a plane formed by the x axis and the y axis, selecting sampling points at intervals of 2mm, and determining the coordinates of the sampling points in the constructed coordinate system according to the sizes of the 17 electrostatic probe motion measuring mechanism, the 3 test special cylinder and the 15 side auxiliary cavity;
according to the setting that 24 electrostatic probes move to a position 3mm away from the surface of a basin to be measured 9 during measurement, the assembly angle of the 24 electrostatic probes and the basin to be measured 9 can be kept at the setting of 90 degrees +/-30 degrees, the coordinate of 7 electrostatic probes during measurement of each sampling point is deduced, and the coordinate of each measurement point is connected to form the motion track of 7 electrostatic probes;
and writing a control program through a control system of the 17-degree electrostatic probe movement measuring mechanism to realize the movement of the 7-degree electrostatic probe, and after the 9-degree measured basin is assembled and rotates for 360 degrees, adjusting the 7-degree electrostatic probe to move to the next measuring point through the control system of the 17-degree electrostatic probe movement measuring mechanism.
The invention discloses a method for measuring surface potential of a complex insulating structure, which comprises the following measuring steps:
treating the surface of the assembly of the basin 9 to be detected, wiping the surface with absolute ethyl alcohol and naturally drying the surface to ensure that no charge exists on the surface;
connecting an external circuit to the 14 electric connection part and the 18 conducting rod, before an experiment, detecting that the air tightness of the insulator surface charge measuring system is good, vacuumizing a closed space formed by a basin-type insulating cover 1, a transition cylinder 2, a special cylinder 3 for the experiment, a cover plate 6, a cover plate 8, an end cover plate 10, a side auxiliary cavity 15 and a mounting plate 16, washing with dry gas, and finally filling with 0.3MPa dry insulating gas;
and applying voltage to the circuit, and determining the positive and negative of the voltage at two ends of the basin assembly to be tested 9 by an external circuit. During pressurization, the 18 conductive rod keeps in contact with the surface of the basin to be measured 9, the reset interface of the 39 man-machine interface is pressed, so that each movement shaft keeps at an initial position, and at the moment, the 17 electrostatic probe movement measuring mechanism keeps 24 electrostatic probes to be retracted into the abdominal cavity, so that the electrostatic probes are prevented from being broken by high voltage;
after pressurization is completed, rotating a 4-iron-cast hand wheel to enable the 18 conductive rods to be contracted into 20 conductor supports, and keeping the front sections of the 18 conductive rods 250mm away from the assembly surface of the 9 basin to be tested;
pressing 39 a start button on a human-computer interface, assembling 9 a measured basin and moving 17 an electrostatic probe movement measuring mechanism according to a movement track set by a program, and collecting a measured signal by a 37 collecting display terminal;
when extracting the signal, the measuring signal corresponding to the high-level reference signal is the required measuring signal;
in the measurement, if any emergency happens, a stop button on the human-computer interface can be pressed 39, the measurement process is stopped at any time, a reset button on the human-computer interface is pressed 39, and the electrostatic probe movement measurement mechanism 17 can return to the initial position.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Claims (9)
1. The utility model provides a measure electrostatic probe control mechanism of complicated insulation system surface potential which characterized in that: comprises a basin assembly (9) to be tested, an insulating connecting rod (11), a transmission component (12), a driving component (13) and an electric connection part (14); the driving assembly (13) is provided with a rotating shaft, the rotating shaft is connected with the transmission assembly (12), one end of the insulating connecting rod (11) is used for being connected with the measured basin assembly (9), and the other end of the insulating connecting rod is connected with the rotating shaft through the transmission assembly (12), so that the measured basin assembly (9) is driven to rotate, and the measured basin assembly (9) can be matched with the electrostatic probe motion measuring mechanism to perform scanning measurement on the surface of the measured basin assembly;
the device also comprises an iron casting hand wheel (4), a shaft seal assembly (5), a conducting rod (18), a conductor support (20), a transmission mechanism (19) and an insulating pull rod (7); an iron casting hand wheel (4) is connected with a shaft seal assembly (5), one end of an insulating pull rod (7) is connected with the shaft seal assembly (5), the other end of the insulating pull rod (7) is connected with a transmission mechanism (19), one end of a conductive rod (18) is connected with the transmission mechanism (19), the other end of the conductive rod (18) is connected with a basin assembly (9) to be tested, and the interior of a conductor support (20) is hollow;
the device is characterized by further comprising a basin-type insulating cover (1), a transition cylinder (2), a special test cylinder (3), a cover plate assembly (6), a cover plate (8), an end cover plate (10), a side auxiliary cavity (15) and a mounting plate (16), wherein one end of the transition cylinder (2) is connected with the basin-type insulating cover (1), the other end of the transition cylinder is welded with the special test cylinder (3), and the cover plate assembly (6) and the cover plate (8) are mounted in the middle of the special test cylinder (3); the end cover plate (10) is arranged at the bottom of the special test barrel body (3), one end of the side auxiliary cavity (15) is welded with the special test barrel body (3), and the mounting plate (16) is arranged at the other end of the side auxiliary cavity (15); a closed test environment is formed by the method so as to keep the gas environment inside the cavity stable;
the device also comprises an electrostatic probe movement measuring mechanism (17); the electrostatic probe movement measuring mechanism (17) is arranged in the side abdominal cavity (15) and is fixed on the mounting plate (16); the lateral abdominal cavity (15) comprises two electrostatic probe motion measuring mechanisms (17) which are respectively positioned at the left side and the right side to ensure that the concave surface and the convex surface of the insulator can be measured; the electrostatic probe movement measuring mechanism (17) further comprises a first photoelectric switch (21), a first rotating motor (22), a sliding rod (23), an electrostatic probe (24), a clamp (25), a screw rod (26), a cylinder shell (27), a rotating shaft (28), a second photoelectric switch (29), a support (30), a second rotating motor (31), a large screw rod (32), a sliding block unit (33), a sliding block connecting plate (34), a third rotating motor (35) and a third photoelectric switch (36); the first photoelectric switch (21) is mounted on the barrel shell (27), the first rotating motor (22) is mounted on the outer side of the support (30), one end of the rotating shaft (30) is connected with the inner side of the support (30), the other end of the rotating shaft is connected with the clamp (25), the electrostatic probe is clamped by the clamp (25), and the movement of the rotating shaft (28) can drive the electrostatic probe to rotate; the sliding rod (23) is sleeved outside the screw rod (26), the screw rod and the screw rod are both packaged in the cylinder shell, and the sliding rod (23) can move in a vertical plane so as to drive the electrostatic probe to move in the vertical direction; the sliding block unit (33) is horizontally arranged on the mounting plate (16) and sleeved outside the large screw rod (32), the sliding block unit (33) is connected through the sliding block connecting plate, and the sliding block unit (33) can move in the horizontal direction so as to drive the electrostatic probe to move in the horizontal direction;
the device can simultaneously measure the concave surface and the convex surface of the basin-type insulator, the designed measuring mechanism can realize full-coverage measurement of the basin-type insulator through the three-dimensional movement of the probe moving mechanism and the matching of the insulator rotating mechanism, and all measuring processes realize automatic measurement through the designed control circuit.
2. The electrostatic probe control mechanism for measuring surface potential of complex insulation structure according to claim 1, characterized in that: the first rotating motor (22), the second rotating motor (31) and the third rotating motor (35) drive the electrostatic probe to rotate and move in the horizontal direction and the vertical direction; the photoelectric switch I (21), the photoelectric switch II (29) and the photoelectric switch III (36) are used for correcting the initial positions of the electrostatic probe moving in three directions, and the electrostatic probe is ensured to be located at the same position before each measurement is started.
3. The electrostatic probe control mechanism for measuring the surface potential of a complex insulation structure according to claim 2, characterized in that: the device also comprises a control assembly, wherein the control assembly comprises an acquisition display terminal (37), a control power distribution cabinet (38) and a man-machine interface (39); the acquisition display terminal (37) is used for acquiring a detected signal, the control power distribution cabinet (38) is used for controlling the rotating motion direction, the rotating speed and the rotating angle of the assembly of the detected basin, and in addition, the control power distribution cabinet is also used for controlling the ascending and descending of the motion mechanism and the rotation of the electrostatic probe; the man-machine interface (39) provides three instructions for the user to start, stop and reset.
4. The electrostatic probe control mechanism for measuring the surface potential of a complex insulation structure according to any one of claims 1 to 3, characterized in that: the end part of the conducting rod (18) can move to a position 250mm away from the surface of the insulator by rotating the iron casting hand wheel (4) through the transmission mechanism (19).
5. The electrostatic probe control mechanism for measuring surface potential of complex insulation structure according to claim 4, characterized in that: the tested basin assembly (9) further comprises a supporting component, and the supporting component is mounted on the inner wall of the special test barrel body (3) and used for rolling and supporting the tested basin assembly.
6. The electrostatic probe control mechanism for measuring surface potential of complex insulation structure according to claim 5, characterized in that: the basin assembly (9) to be tested belongs to a detachable structure and is suitable for different basin structures.
7. The electrostatic probe control mechanism for measuring surface potential of complex insulation structure according to claim 6, characterized in that: the transmission assembly (12) further comprises a sealing element and a guide sleeve, the guide sleeve is provided with a groove, and the sealing element is arranged in the groove.
8. An electrostatic probe control mechanism for measuring surface potential of a complex insulation structure according to any one of claims 5-7, characterized in that: still include outside support frame, the support frame is used for supporting by basin formula insulating cover (1), transition barrel (2), experimental special barrel (3), apron assembly (6), apron (8), tip apron (10), side attach chamber (15), mounting panel (16) the sealed jar of body that forms, and adjustable the height to the ground of the sealed jar of body.
9. A method for measuring the surface potential of a complex insulating structure, which is realized based on the electrostatic probe control mechanism of any one of claims 5 to 7, and is characterized by comprising the following steps:
treating the surface of the tested basin assembly (9), wiping the surface with absolute ethyl alcohol and naturally drying the surface to ensure that no charge exists on the surface;
an external circuit is connected to the electric connection part (14) and the conducting rod (18), before an experiment, the air tightness of the insulator surface charge measurement system needs to be detected to be good, a closed space formed by the basin-type insulating cover (1), the transition cylinder (2), the special test cylinder (3), the cover plate assembly (6), the cover plate (8), the end cover plate (10), the side auxiliary cavity (15) and the mounting plate (16) is vacuumized, and is subjected to gas washing by using dry gas, and finally, the dry insulating gas with 0.3MPa is filled;
applying voltage to the circuit, wherein the positive and negative of the voltage at the two ends of the tested basin assembly (9) are determined by an external circuit; during pressurization, the conductive rod (18) keeps in contact with the surface of the measured basin assembly (9), the reset interface of the man-machine interface (39) is pressed to keep each movement axis at an initial position, and the electrostatic probe movement measuring mechanism (17) keeps the electrostatic probe (24) retracted into the abdominal cavity to prevent the electrostatic probe from being damaged by high-voltage breakdown;
after pressurization is finished, rotating the iron casting hand wheel (4) to enable the conducting rod (18) to be retracted into the conductor support (20), and keeping the distance between the front section of the conducting rod (18) and the surface of the basin assembly (9) to be measured to be 250 mm;
pressing a start button on a man-machine interface (39), enabling the measured basin assembly (9) and the electrostatic probe movement measuring mechanism (17) to move according to a movement track set by a program, and enabling a measured signal to be collected by a collection display terminal (37);
when extracting the signal, the measuring signal corresponding to the high-level reference signal is the required measuring signal;
in the measurement process, if any emergency occurs, a stop button on the man-machine interface (39) can be pressed to stop the measurement process at any time, and a reset button on the man-machine interface (39) is pressed to return the electrostatic probe movement measurement mechanism (17) to the initial position.
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| CN108732473B (en) * | 2018-05-02 | 2023-10-27 | 沈阳工业大学 | Miniaturized basin-type insulator surface charge distribution synchronous measurement device and method |
| CN110806512B (en) * | 2018-08-06 | 2022-03-08 | 平高集团有限公司 | Insulator surface charge measuring device |
| CN111337760B (en) * | 2018-12-18 | 2022-08-30 | 平高集团有限公司 | Insulator surface charge measurement system and mounting rack thereof |
| CN110161323A (en) * | 2019-04-17 | 2019-08-23 | 天津大学 | Insulator surface potential measurement system and measurement method based on multisensor syste |
| CN111896605B (en) * | 2020-06-22 | 2022-01-21 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | GIL equipment three-support insulator surface charge measuring device and test method thereof |
| CN114234896A (en) * | 2021-11-30 | 2022-03-25 | 南方电网科学研究院有限责任公司 | Device and method for detecting surface state of basin-type insulator |
| CN114675091B (en) * | 2022-04-05 | 2023-07-18 | 中国长江电力股份有限公司 | High-voltage basin-type insulator surface particle aggregation electric field analysis device |
| CN115453220A (en) * | 2022-09-20 | 2022-12-09 | 武汉大学 | Insulator surface potential full-coverage measuring device |
| CN115308499B (en) * | 2022-09-29 | 2022-12-30 | 湖南大学 | Composite insulator surface charge detection device and method of umbrella skirt structure |
| CN116702465A (en) * | 2023-05-30 | 2023-09-05 | 武汉大学 | Direct current basin-type insulator surface charge suppression method and computer readable medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954850A (en) * | 2014-04-22 | 2014-07-30 | 重庆大学 | Surface charge measuring system with external motion control mechanism and measuring method |
| CN104991129A (en) * | 2015-03-27 | 2015-10-21 | 华北电力大学 | Vacuum insulator surface charge three-dimensional measurement apparatus |
| CN206460102U (en) * | 2017-02-13 | 2017-09-01 | 南方电网科学研究院有限责任公司 | Insulator rotating mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101027192B1 (en) * | 2008-10-31 | 2011-04-06 | 한국원자력연구원 | Water cooled electrostatic probe assembly |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954850A (en) * | 2014-04-22 | 2014-07-30 | 重庆大学 | Surface charge measuring system with external motion control mechanism and measuring method |
| CN104991129A (en) * | 2015-03-27 | 2015-10-21 | 华北电力大学 | Vacuum insulator surface charge three-dimensional measurement apparatus |
| CN206460102U (en) * | 2017-02-13 | 2017-09-01 | 南方电网科学研究院有限责任公司 | Insulator rotating mechanism |
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