CN114122997A - Self-adaptive insulation isolation device and unilateral live-line maintenance method based on same - Google Patents
Self-adaptive insulation isolation device and unilateral live-line maintenance method based on same Download PDFInfo
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- CN114122997A CN114122997A CN202111420137.9A CN202111420137A CN114122997A CN 114122997 A CN114122997 A CN 114122997A CN 202111420137 A CN202111420137 A CN 202111420137A CN 114122997 A CN114122997 A CN 114122997A
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- 238000002955 isolation Methods 0.000 title claims abstract description 63
- 238000009413 insulation Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012423 maintenance Methods 0.000 title claims description 46
- 238000005192 partition Methods 0.000 claims abstract description 73
- 125000006850 spacer group Chemical group 0.000 claims description 18
- 230000003044 adaptive effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 230000004888 barrier function Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000008447 perception Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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Abstract
Self-adaptive insulating isolation device and unilateral live overhaul method based on the same, wherein the self-adaptive insulating isolation device comprises: the insulating partition plate is arranged on the telescopic support frame and used for providing an insulating and isolated operation area for operators; the movable chassis is used for bearing the insulating partition plate, the distance measuring equipment, the telescopic support frame, the rectangular coordinate moving platform and the main controller; the distance measuring equipment is arranged at the top of the telescopic support frame; the telescopic support frame is arranged on the rectangular coordinate moving platform and used for driving and adjusting the position of the insulating partition plate in the vertical direction of the horizontal plane; the rectangular coordinate moving platform is fixed on the movable chassis and used for driving and adjusting the position of the insulating partition plate in the x-y direction of the horizontal plane; the main controller is connected with the distance measuring equipment and used for the rectangular coordinate moving platform and the telescopic support frame to act. The invention can obtain the advantages of flexible device deployment, self-adaptive adjustment of the insulation isolation protection area, single-side live working and the like.
Description
Technical Field
The invention belongs to the field of maintenance of high-voltage equipment, and particularly relates to a self-adaptive insulation isolation device and a high-voltage isolation switch single-side live maintenance method based on the same.
Background
The high-voltage isolating switch is important equipment in a transmission line, but is often influenced by severe environments such as wind, rain, snow, dirt, condensation, ice, frost and the like, so that the problems of equipment aging or damage and the like are easily caused. Therefore, the system needs to be overhauled conveniently and timely to guarantee the normal operation of the power grid system. However, in the conventional maintenance operation mode, the two ends of the high-voltage isolating switch need to be kept in a power-off state so as to ensure the safety of the operators in the high-voltage environment. The normal operation of the power grid is seriously influenced by the operation mode of power-off maintenance, and huge potential maintenance cost is caused.
Under the circumstances, how to realize a safety detection method under a single-side charged state becomes an important and urgent problem in the field of high-voltage isolating switch maintenance. At present, chinese patent with publication number CN102761066A proposes an insulation device for unilateral live overhaul of an isolating switch, which comprises an insulation board, a T-shaped caliper, a U-shaped cassette and an insulation rod, wherein an insulation board clamping groove is arranged at the top of a cross arm of the T-shaped caliper, the insulation board is movably clamped in the insulation board clamping groove, a connecting bolt is arranged on the U-shaped cassette, a bolt hole is arranged on a vertical rod of the T-shaped caliper, the connecting bolt is screwed in the bolt hole, a nut is arranged at the center of a bottom plate of the U-shaped cassette, a screw rod is arranged in the nut, and a top plate is arranged at the top end of the screw rod penetrating through the nut and entering into a U-shaped groove of the U-shaped cassette. The device can provide the insulating isolated operation region based on the insulation board, realizes isolator maintenance operation under unilateral electrified state. However, the conventional insulating device is fixedly installed for estimating the safe distance, cannot adaptively adjust the insulating isolation protection area during operation, cannot be moved in a portable mode, and is lack of perception of key external information such as the operation safe distance, the insulating position and the charged position.
Therefore, the high-voltage isolating switch detection method based on the device lacks the capability of coping with safety uncertainty and is difficult to adapt to the operation requirement of safe maintenance of the isolating switch under different voltage levels.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a self-adaptive insulation isolation device and a high-voltage isolating switch single-side live overhaul method based on the same. The safe maintenance method is based on the movable self-adjusting insulating isolation device, and can realize maintenance operation of the high-voltage isolation switch in a single-side electrified state.
The invention adopts the following technical scheme. A first aspect of the invention provides an adaptive insulating isolation device comprising: the device comprises an insulating partition plate, a movable chassis, distance measuring equipment, a telescopic support frame, a rectangular coordinate moving platform and a main controller;
the insulating partition plate is arranged on the telescopic support frame and used for providing an insulating and isolated operation area for operators;
the movable chassis is used for bearing the insulating partition plate, the distance measuring equipment, the telescopic support frame, the rectangular coordinate moving platform and the main controller;
the distance measuring equipment is arranged at the top of the telescopic support frame;
the telescopic support frame is arranged on the rectangular coordinate moving platform and used for driving and adjusting the position of the insulating partition plate in the vertical direction of the horizontal plane;
the rectangular coordinate moving platform is fixed on the movable chassis and used for driving and adjusting the position of the insulating partition plate in the x-y direction of the horizontal plane;
the main controller is connected with the distance measuring equipment and used for the rectangular coordinate moving platform and the telescopic support frame to act.
Preferably, the insulating spacer is made of FR4 epoxy resin and has a thickness of 6 mm, a length of 130 cm and a width of 60 cm.
Preferably, 4 universal wheels are installed on the movable chassis below the rectangular coordinate moving platform and used for the electric engineering vehicle to drag the whole self-adaptive insulating isolation device to a working site.
Preferably, the ranging apparatus is a lidar.
Preferably, the telescopic support frame is driven by a motor to adjust the position of the insulating partition plate in the vertical direction of the horizontal plane;
the rectangular coordinate moving platform is driven by a motor to adjust the position of the insulating partition plate in the x-y direction of the horizontal plane.
Preferably, the main controller can observe the relative position information among the insulating partition plate, the high-voltage isolating switch and the operator according to the laser radar, and automatically control the feeding of the rectangular coordinate moving platform in the x-y direction of the horizontal plane and the feeding of the telescopic support in the vertical direction.
The invention provides a unilateral live overhaul method based on the self-adaptive insulation isolation device, which is characterized by comprising the following steps of:
step 1, an isolating switch is switched to a brake-off position;
and 5, after the maintenance operation is finished, the maintenance personnel leave the maintenance position, and the self-adaptive insulating isolation device leaves the maintenance position.
Preferably, step 3 specifically comprises:
step 3.1, dragging the whole self-adaptive insulation isolation device to an operation site by an electric engineering truck for deployment;
3.2, controlling the rectangular coordinate moving platform and the telescopic support frame to adjust the feeding distance of the insulating partition plate in the y-axis direction and the vertical z-axis direction, so that the insulating partition plate can completely cover the high-voltage isolating switch in the two directions of the y-axis direction and the vertical z-axis direction;
and 3.3, under the assistance of distance measuring equipment, adjusting the feeding of the rectangular coordinate moving platform in the x-axis direction to ensure that the distance between the insulating partition plate and the high-voltage disconnecting switch contact on the charged side is L centimeters in the x-axis direction, namely the allowable minimum safety distance.
Preferably, in step 3.3, if the coordinate of the high-voltage isolating switch contact on the charged side in the horizontal plane x axial direction is xElectric powerThen the cartesian moving platform adjusts the initialized coordinates in the x-axis direction to be expressed by the following formula,
xboard＝xElectric power-L
In the formula:
xboardThe initialized coordinates of the insulating spacer in the x-axis direction are shown.
Preferably, in step 4, the position of the insulating spacer is adaptively adjusted according to the following formula,
in the formula:
xboardIndicating the initialized coordinates for the insulating spacers in the x-axis direction,
xwithout electricityShowing the coordinates of the high voltage disconnector contacts on the non-live side in the x-axis,
epsilon represents the allowable adjustable travel distance for the actual deployment,
xelectric powerRepresents the coordinates of the live side high voltage disconnector contacts in the x-axis direction of the horizontal plane,
l represents the minimum safe distance of the live side high voltage disconnector contacts,
xhuman beingWhich is indicative of the position of the person,
Lprotection ofIndicating the shortest distance between the operator and the insulating spacer.
Preferably, step 4 specifically includes:
step 4.1, setting the operator to enter the power-off side of the high-voltage isolating switchThe shortest distance between an operator and the insulating partition plate during maintenance operation is not less than LProtection ofCentimeter, so as to ensure an effective and safe operation interval;
step 4.2, in the process of maintenance operation, the distance measuring equipment 3 observes the positions of the insulating partition plate, the high-voltage isolating switch and the operating personnel in real time;
step 4.3, judging whether the distance between the operator and the high-voltage isolating switch contact on the live side is greater than or equal to LProtection of+ L cm, if greater than or equal to step 4.4, alarm is given out if smaller than step, and the insulating partition board is placed at the position x of the insulating partition board in the x-axis directionBoardFixed to the initialisation position, i.e. x in step 3.3Board＝xElectric power-L。
And 4.4, observing the positions of the insulating partition plate, the high-voltage isolating switch and the operator in real time according to the distance measuring equipment 3, and carrying out self-adaptive adjustment on the position of the insulating partition plate, so that the maintenance operator can normally operate. In a further preferred but non-limiting embodiment of the invention, step 4.4 comprises in particular:
if the position x of the personHuman beingPosition x of high-voltage isolating switch contact on non-electrified side on x axisWithout electricityThe distance between the two is greater than or equal to LProtection ofCentimeter, the position x of the insulating partition in the x-axis directionBoardAs expressed in the following formula,
xboard＝xWithout electricity+ε
In the formula:
epsilon represents the allowable adjustable travel distance for practical deployment, taking into account that the insulation board cannot overlap with the high voltage disconnector contacts on the non-live side;
if the position x of the personHuman beingPosition x of high-voltage isolating switch contact on non-electrified side on x axisWithout electricityThe distance between the two is less than LProtection ofCm, and at the same time, the position L of a personProtection ofPosition x of contact of high-voltage isolating switch on live sideElectric powerThe distance between the two is greater than or equal to LProtection of+ L cm, the position x of the insulating partition plate in the x-axis direction at the momentBoardAs expressed in the following formula,
xboard＝xHuman being+LProtection of
In the formula:
xboardIndicating the initialized coordinates for the insulating spacers in the x-axis direction,
xhuman beingWhich is indicative of the position of the person,
Lprotection ofIndicating the shortest distance between the operator and the insulating spacer.
Compared with the prior art, the movable self-adjusting insulating isolation device has the advantages that the movable self-adjusting insulating isolation device comprises a movable chassis, a rectangular coordinate moving platform, a telescopic support frame, an insulating baffle, a laser radar and the like. The laser radar can sense external environments such as operators, isolating switches and the like; the insulating baffle provides an insulating isolation protection area; the rectangular coordinate moving platform can adjust the position of the insulating baffle relative to an operator or a high-voltage isolating switch; the movable chassis may enable rapid deployment of the isolation device. Therefore, the improved safety maintenance method and device for the voltage isolating switch can obtain the advantages of flexible deployment of the device, self-adaptive adjustment of an insulating isolation protection area, single-side live working and the like. More specifically:
1. compared with the traditional power-off maintenance operation mode, the isolation switch safety maintenance method can operate in a single-side electrified state, and maintenance cost is reduced.
2. Particularly, the invention provides a high-voltage isolating switch single-side live overhaul method based on self-adaptive insulation isolation, and the designed insulation isolating device is provided with position measurement, can autonomously sense the relative positions of an operator, a live isolating switch contact and an insulation plate, and can adaptively adjust an isolation protection area, so that the method has the advantages of high safety protection degree, convenience in use, strong universality and the like;
3. meanwhile, compared with the existing insulation isolation device based on the insulation partition plate, the movable self-adjusting insulation isolation device can be moved in a portable mode, can be rapidly deployed to an operation site, and improves maintenance work.
Drawings
FIG. 1 is a schematic structural diagram of a movable self-adjusting insulating spacer according to an embodiment of the present invention;
fig. 2 is a flow chart of a safety maintenance method of a high-voltage isolating switch according to an embodiment of the invention.
In the figure:
1-an insulating spacer;
2-a movable chassis;
3-laser radar;
4-a telescopic support;
5-a rectangular coordinate moving platform;
6-the master controller.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 1, embodiment 1 of the present invention provides an adaptive insulation isolation device, including: insulating barrier 1, portable chassis 2, laser radar 3, telescopic bracket 4, rectangular coordinate moving platform 5 and master controller 6.
It should be noted that, when the adaptive isolation device is deployed, the x axis on the horizontal plane refers to a parallel line of two end connecting lines of the high-voltage isolation light, the corresponding y axis refers to a vertical line of the two end connecting lines, the isolation partition board 1 is deployed parallel to the y axis, and the corresponding z axis refers to a vertical direction perpendicular to the x-y plane.
In a further preferred but non-limiting embodiment of the invention, said insulating spacer 1 is made of FR4 epoxy resin, with a thickness of 6 mm, a length of 130 cm and a width of 60 cm. The insulating partition board 1 is arranged on the telescopic support frame 4 and used for providing an insulating and isolated operation area for operators.
In a further preferred but non-limiting embodiment of the invention, said movable chassis 2 carries other functional modules. More specifically, 4 universal wheels are installed on the movable chassis 2 below the rectangular coordinate moving platform 5, so that the whole self-adaptive insulating isolation device can be dragged to a working site by an electric engineering vehicle, and the convenience of deployment is improved. Meanwhile, in the use process, the four corners of the movable chassis can be manually balanced, the stability of the device is improved, and the device is prevented from overturning.
In a further preferred but non-limiting embodiment of the invention, the lidar 3 is mounted on top of the telescopic support 4, allowing real-time observation of the relative position of the insulating barrier 1 to the high-voltage disconnector and of the insulating barrier to the operator.
In a further preferred but non-limiting embodiment of the invention, the telescopic support 4 is mounted on a rectangular coordinate moving platform 5, and the position of the insulating partition 1 in the vertical direction of the horizontal plane can be adjusted by the driving of a motor.
In a further preferred but non-limiting embodiment of the invention, said cartesian moving platform 5 is fixed to the movable chassis 2 and the position of the insulating partition 1 in the x-y direction of the horizontal plane can be adjusted by the driving of a motor. The rectangular coordinate moving platform 5 is a driving mode that a permanent magnet synchronous motor is combined with a ball screw, and a position instruction of the motor is given by a main controller 6 according to observation information of the laser radar 3.
In a further preferred but non-limiting embodiment of the invention, the main controller 6 can automatically control the feeding of the cartesian coordinate moving platform 5 in the x-y direction of the horizontal plane and the feeding of the telescopic support frame 4 in the vertical direction according to the relative position information of the laser radar 3, which is observed by the insulating partition board 1, the high-voltage isolating switch and the operator.
That is to say, the position of insulating barrier 1 in horizontal plane x-y direction can be adjusted through the drive rectangular coordinate moving platform 5 of motor to the insulating isolating device of self-adaptation, drives the flexible position of adjusting insulating barrier 1 vertical direction of telescopic bracket 4 to reliably remove insulating barrier 1 of design to 35kV isolator fracture position, play the effect of keeping apart isolator fracture electrified side, ensure that the maintainer can overhaul the fracture opposite side. The laser radar 3 arranged on the top of the telescopic support frame 4 can observe the relative position of the insulating partition plate 1 and the high-voltage isolating switch and the relative position of the insulating partition plate and an operator in real time. The main controller 6 can automatically control the feeding of the rectangular coordinate moving platform 5 in the x-y direction of the horizontal plane and the feeding of the telescopic support frame 4 in the vertical direction according to the relative position information observed by the laser radar 3, and the insulating isolation protection area can be adjusted in a self-adaptive mode, so that the operation range and the safety range of maintenance personnel can be considered at the same time.
In the present embodiment, the shortest distance L between the worker and the insulating spacer 1 is definedProtection of20 cm; the minimum safe distance L between the insulating spacer 1 and the live-side high-voltage disconnector contact is set to 40 cm.
As shown in fig. 2, embodiment 2 of the present invention provides a method for performing a single-side live overhaul on a high-voltage isolator based on the adaptive insulation isolation device, including the following steps:
step 1, the isolating switch is switched to an opening position.
And 2, powering off the single side of the isolating switch.
And 3, installing and initializing the movable self-adaptive insulating isolation device. In a further preferred but non-limiting embodiment of the invention, step 3 comprises in particular:
and 3.1, dragging the whole self-adaptive insulating isolation device to an operation site by the electric engineering vehicle, and deploying conveniently.
And 3.2, remotely controlling the rectangular coordinate moving platform 5 and the telescopic support frame 4 by an operator to adjust the feeding distance of the insulating partition board 1 in the y-axis direction and the vertical z-axis direction, so that the insulating partition board 1 can completely cover the high-voltage isolating switch in the two directions of the y-axis direction and the vertical z-axis direction.
And 3.3, under the assistance of a laser radar, adjusting the feeding of the rectangular coordinate moving platform 5 in the x-axis direction to enable the distance between the insulating partition plate 1 and the high-voltage isolating switch contact on the charged side to be L centimeters in the x-axis direction, namely, the allowable minimum safety distance. If the coordinate of the high-voltage isolating switch contact on the charged side in the horizontal plane x axial direction is xElectric powerThen, the cartesian moving platform 5 adjusts the initialized coordinates in the x-axis direction to be expressed as follows,
xboard＝xElectric power-L
In the formula:
xboardThe initialized coordinates of the insulating barrier 1 in the x-axis direction, that is, the initialized coordinates of the rectangular coordinate moving platform 5 in the x-axis direction are shown.
And 4, in the insulation isolation protection area, carrying out maintenance operation on the isolating switch at the power-off end, observing the positions of the insulation partition plate 1, the high-voltage isolating switch and an operator in real time by the laser radar 3, sending an alarm when the position is smaller than the safe distance, carrying out self-adaptive adjustment on the position of the insulation partition plate 1 when the position is more than the safe distance, and carrying out normal operation by the maintenance operator. Specifically, the position of the insulating spacer 1 is adaptively adjusted in the following formula,
in the formula:
xboardIndicating the initialized coordinates of the insulating spacer 1 in the x-axis direction,
xwithout electricityShowing the coordinates of the high voltage disconnector contacts on the non-live side in the x-axis,
epsilon represents the allowable adjustable travel distance for the actual deployment,
xelectric powerRepresents the coordinates of the live side high voltage disconnector contacts in the x-axis direction of the horizontal plane,
l represents the minimum safe distance of the live side high voltage disconnector contacts,
xhuman beingWhich is indicative of the position of the person,
Lprotection ofIndicating the shortest distance between the worker and the insulating spacer 1.
In a further preferred but non-limiting embodiment, step 4 comprises in particular:
step 4.1, setting the shortest distance between an operator and the insulating partition board 1 not to be less than L when the operator carries out maintenance operation on the power-off side of the high-voltage isolating switchProtection ofCentimeter, so as to ensure an effective and safe operation interval;
4.2, in the process of maintenance operation, the laser radar 3 observes the positions of the insulating partition plate 1, the high-voltage isolating switch and the operating personnel in real time;
step 4.3, judging whether the distance between the operator and the high-voltage isolating switch contact on the live side is greater than or equal to LProtection of+ L cm, if greater than or equal to step 4.4, alarm is given out if smaller than step, and the insulating partition board 1 is insulated at the position x of the insulating partition board 1 in the x-axis directionBoardFixed to the initialisation position, i.e. x in step 3.3Board＝xElectric power-L。
And 4.4, observing the positions of the insulating partition plate 1, the high-voltage isolating switch and the operating personnel in real time according to the laser radar 3, and carrying out self-adaptive adjustment on the position of the insulating partition plate 1 so that the maintenance operating personnel can normally operate. In a further preferred but non-limiting embodiment of the invention, step 4.4 comprises in particular:
if the position x of the personHuman beingPosition x of high-voltage isolating switch contact on non-electrified side on x axisWithout electricityThe distance between the two is greater than or equal to LProtection ofCm, the position x of the insulating partition board 1 in the x-axis directionBoardAs expressed in the following formula,
xboard＝xWithout electricity+ε
In the formula:
epsilon represents the allowable adjustable travel distance for practical deployment, taking into account that the insulation board cannot overlap with the high voltage disconnector contacts on the non-live side;
if the position x of the personHuman beingPosition x of high-voltage isolating switch contact on non-electrified side on x axisWithout electricityThe distance between the two is less than LProtection ofCm, and at the same time, the position L of a personProtection ofPosition x of contact of high-voltage isolating switch on live sideElectric powerThe distance between the two is greater than or equal to LProtection of+ L cm, the position x of the insulating partition plate in the x-axis direction at the momentBoardAs expressed in the following formula,
xboard＝xHuman being+LProtection of
And 5, after the maintenance operation is finished, the maintenance personnel leave the maintenance position, and the self-adaptive insulating isolation device leaves the maintenance position.
The invention provides a safe overhauling method capable of allowing one side to be electrified aiming at the overhauling requirement of a high-voltage isolating switch. More importantly, the invention provides a movable self-adjusting insulating isolation device. The device can be quickly deployed to an operation site by virtue of the mobile ground plate, then the operation personnel can be monitored in real time, and the position of the insulating partition plate can be adjusted in a self-adaptive manner, so that a safe and reliable insulating isolation protection area is provided.
Compared with the prior art, the movable self-adjusting insulating isolation device has the advantages that the movable self-adjusting insulating isolation device comprises a movable chassis, a rectangular coordinate moving platform, a telescopic support frame, an insulating baffle, a laser radar and the like. The laser radar can sense external environments such as operators, isolating switches and the like; the insulating baffle provides an insulating isolation protection area; the rectangular coordinate moving platform can adjust the position of the insulating baffle relative to an operator or a high-voltage isolating switch; the movable chassis may enable rapid deployment of the isolation device. Therefore, the improved safety maintenance method and device for the voltage isolating switch can obtain the advantages of flexible deployment of the device, self-adaptive adjustment of an insulating isolation protection area, single-side live working and the like. More specifically:
1. compared with the traditional power-off maintenance operation mode, the isolation switch safety maintenance method can operate in a single-side electrified state, and maintenance cost is reduced.
2. Particularly, the invention provides a high-voltage isolating switch single-side live overhaul method based on self-adaptive insulation isolation, and the designed insulation isolating device is provided with position measurement, can autonomously sense the relative positions of an operator, a live isolating switch contact and an insulation plate, and can adaptively adjust an isolation protection area, so that the method has the advantages of high safety protection degree, convenience in use, strong universality and the like;
3. meanwhile, compared with the existing insulation isolation device based on the insulation partition plate, the movable self-adjusting insulation isolation device can be moved in a portable mode, can be rapidly deployed to an operation site, and improves maintenance work.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (11)
1. An adaptive insulation isolation device comprising: the device comprises an insulating partition plate (1), a movable chassis (2), distance measuring equipment, a telescopic support frame (4), a rectangular coordinate moving platform (5) and a main controller (6); it is characterized in that the preparation method is characterized in that,
the insulating partition plate (1) is arranged on the telescopic support frame (4) and is used for providing an insulating and isolated operation area for operators;
the movable chassis (2) is used for bearing the insulating partition plate (1), the distance measuring equipment, the telescopic support frame (4), the rectangular coordinate moving platform (5) and the main controller (6);
the distance measuring equipment is arranged at the top of the telescopic support frame (4);
the telescopic support frame (4) is arranged on the rectangular coordinate moving platform (5) and is used for driving and adjusting the position of the insulating partition plate (1) in the vertical direction of the horizontal plane;
the rectangular coordinate moving platform (5) is fixed on the movable chassis (2) and is used for driving and adjusting the position of the insulating partition plate (1) in the x-y direction of the horizontal plane;
the main controller (6) is connected with the distance measuring equipment and used for the actions of the rectangular coordinate moving platform (5) and the telescopic support frame (4).
2. The adaptive insulation isolation device of claim 1, wherein:
the insulating partition board (1) is made of FR4 epoxy resin, and has the thickness of 6 mm, the length of 130 cm and the width of 60 cm.
3. The adaptive insulation isolation device of claim 1, wherein:
4 universal wheels are installed on the movable chassis (2) below the rectangular coordinate moving platform (5) and used for dragging the whole self-adaptive insulating isolation device to an operation site by the electric engineering vehicle.
4. The adaptive insulation isolation device of claim 1, wherein:
the distance measuring equipment is a laser radar (3).
5. An adaptive insulation isolation device according to any one of claims 1 to 4, wherein:
the telescopic support frame (4) is driven by a motor to adjust the position of the insulating partition plate (1) in the vertical direction of the horizontal plane;
the rectangular coordinate moving platform (5) is driven by a motor to adjust the position of the insulating partition plate (1) in the x-y direction of the horizontal plane.
6. An adaptive insulation isolation device according to claim 4 or 5, wherein:
the main controller (6) can observe relative position information among the insulating partition plate (1), the high-voltage isolating switch and an operator according to the laser radar (3), and automatically controls the feeding of the rectangular coordinate moving platform (5) in the x-y direction of the horizontal plane and the feeding of the telescopic support frame (4) in the vertical direction.
7. The method for one-side live overhaul based on the self-adaptive insulation isolation device as claimed in any one of claims 1 to 6, characterized by comprising the following steps of:
step 1, an isolating switch is switched to a brake-off position;
step 2, the single side of the isolating switch is powered off;
step 3, installing and initializing the movable self-adaptive insulation isolation device;
step 4, in the insulation isolation protection area, the disconnecting switch at the power-off end is overhauled, the distance measuring equipment 3 observes the positions of the insulation partition plate (1), the high-voltage disconnecting switch and the operating personnel in real time, an alarm is sent out when the distance is smaller than the safe distance, the position of the insulation partition plate (1) is adaptively adjusted when the distance is larger than the safe distance, and the overhauling operating personnel normally operate;
and 5, after the maintenance operation is finished, the maintenance personnel leave the maintenance position, and the self-adaptive insulating isolation device leaves the maintenance position.
8. The single-sided live-line service method of claim 7, characterized in that:
the step 3 specifically comprises the following steps:
step 3.1, dragging the whole self-adaptive insulation isolation device to an operation site by an electric engineering truck for deployment;
3.2, controlling the rectangular coordinate moving platform (5) and the telescopic support frame (4) to adjust the feeding distance of the insulating partition plate (1) in the y-axis direction and the vertical z-axis direction, so that the insulating partition plate (1) can completely cover the high-voltage isolating switch in the y-axis direction and the vertical z-axis direction;
and 3.3, under the assistance of distance measuring equipment, adjusting the feeding of the rectangular coordinate moving platform (5) in the x-axis direction to ensure that the distance between the insulating partition plate (1) and the high-voltage disconnecting switch contact on the charged side is L centimeters in the x-axis direction, namely the allowable minimum safety distance.
9. The single-sided live-line service method of claim 8, characterized in that:
in step 3.3, if the axial coordinate of the high-voltage isolating switch contact on the electrified side in the horizontal plane x is xElectric powerThen the rectangular coordinate moving platform (5) adjusts the initialized coordinate in the x-axis direction to be expressed by the following formula,
xboard＝xElectric power-L
In the formula:
xspannerThe initialization coordinates of the insulating spacer (1) in the x-axis direction are shown.
10. The single-sided live overhaul method as claimed in any one of claims 7 to 9, wherein:
in step 4, the position of the insulating partition plate (1) is adaptively adjusted according to the following formula,
in the formula:
xspannerIndicating the initialized coordinates of the insulating spacer (1) in the x-axis direction,
xwithout electricityShowing the coordinates of the high voltage disconnector contacts on the non-live side in the x-axis,
epsilon represents the allowable adjustable travel distance for the actual deployment,
xelectric powerRepresents the coordinates of the live side high voltage disconnector contacts in the x-axis direction of the horizontal plane,
l represents the minimum safe distance of the live side high voltage disconnector contacts,
xhuman beingWhich is indicative of the position of the person,
Lprotection ofThe shortest distance between the operator and the insulating partition board (1) is shown.
11. The single-sided live-line service method of claim 10, characterized in that:
the step 4 specifically comprises the following steps:
step 4.1, setting the shortest distance between an operator and the insulating partition plate (1) not to be less than L when the operator carries out maintenance operation on the power-off side of the high-voltage isolating switchProtection ofCentimeter, so as to ensure an effective and safe operation interval;
step 4.2, in the process of maintenance operation, the distance measuring equipment 3 observes the positions of the insulating partition plate (1), the high-voltage isolating switch and the operating personnel in real time;
step 4.3, judging whether the distance between the operator and the high-voltage isolating switch contact on the live side is greater than or equal to LProtection of+ L cm, if the distance is larger than or equal to the x-axis distance, continuing to execute the step 4.4, if the distance is smaller than the x-axis distance, giving an alarm, and insulating the insulating partition board (1) at the position x of the insulating partition board (1) in the x-axis directionSpannerFixed to the initialisation position, i.e. x in step 3.3Spanner＝xElectric power-L。
And 4.4, observing the positions of the insulating partition plate (1), the high-voltage isolating switch and the operating personnel in real time according to the distance measuring equipment 3, and carrying out self-adaptive adjustment on the position of the insulating partition plate (1) so as to maintain the normal operation of the operating personnel. In a further preferred but non-limiting embodiment of the invention, step 4.4 comprises in particular:
if the position x of the personHuman beingPosition x of high-voltage isolating switch contact on non-electrified side on x axisWithout electricityThe distance between the two is greater than or equal to LProtection ofCm, the position x of the insulating partition (1) in the x-axis directionSpannerAs expressed in the following formula,
xspanner＝xWithout electricity+ε
In the formula:
epsilon represents the allowable adjustable travel distance for practical deployment, taking into account that the insulation board cannot overlap with the high voltage disconnector contacts on the non-live side;
if the position x of the personHuman beingPosition x of high-voltage isolating switch contact on non-electrified side on x axisWithout electricityThe distance between the two is less than LProtection ofCm, and at the same time, the position L of a personProtection ofPosition x of contact of high-voltage isolating switch on live sideElectric powerThe distance between the two is greater than or equal to LProtection of+ L cm, the position x of the insulating partition plate in the x-axis direction at the momentSpannerAs expressed in the following formula,
xspanner＝xHuman being+LProtection of
In the formula:
xspannerIndicating the initialized coordinates of the insulating spacer (1) in the x-axis direction,
xhuman beingWhich is indicative of the position of the person,
Lprotection ofThe shortest distance between the operator and the insulating partition board (1) is shown.
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