CN113933564B - Non-contact voltage sensor for high-voltage line - Google Patents
Non-contact voltage sensor for high-voltage line Download PDFInfo
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- CN113933564B CN113933564B CN202111165542.0A CN202111165542A CN113933564B CN 113933564 B CN113933564 B CN 113933564B CN 202111165542 A CN202111165542 A CN 202111165542A CN 113933564 B CN113933564 B CN 113933564B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention relates to a non-contact voltage sensor for a high-voltage line, which comprises a filter and a capacitor fixing frame connected with the high-voltage line, and is characterized in that a mounting plate is arranged at the bottom of the filter, the capacitor fixing frame is arranged at two sides of the bottom of the mounting plate, a conductive layer at the upper part and an electrode at the lower part are arranged in the capacitor fixing frame, the conductive layer is fixedly connected with the inner wall of the capacitor fixing frame, the electrode is connected with the inner wall of the capacitor fixing frame in a sliding manner, a lifting plate is arranged in the middle of the capacitor fixing frame at two sides, a lifting assembly is arranged at the bottom of the mounting plate, the lifting plate is connected with the lifting assembly, and the electrodes in the capacitor fixing frame at two sides are respectively connected with the lifting plate through a connecting assembly.
Description
Technical Field
The invention belongs to the technical field of voltage sensors, and particularly relates to a non-contact voltage sensor for a high-voltage line.
Background
The transformer substation intrusion wave overvoltage is an important factor influencing the stable operation of a power system, and the intrusion wave overvoltage level is a standard for judging whether the insulation matching level of the transformer substation is reasonable or not. At present, various methods are available for monitoring the intrusion waves of the transformer substation, but various corresponding defects and problems exist.
The device for comprehensively measuring the full-wave voltage of the substation disclosed in patent document CN105067865B comprises a first conductive layer and a second conductive layer which are respectively laid outside a cylinder with a built-in filter in the equipotential of the line voltage, a first electrode of a first capacitor is formed by a medium and the first conductive layer, and a second electrode of a second capacitor is formed by the medium and the second conductive layer. Based on the scheme of the embodiment of the invention, the first conducting layer and the second conducting layer are combined with the first electrode, the second electrode and the medium to form the low-voltage arm of the voltage divider, the first electrode, the second electrode, the ground and the air medium between the first electrode and the second electrode form the high-voltage arm capacitor, the high-voltage arm capacitor and the low-voltage arm capacitor are connected through polar plates, and lead inductance is not provided, so that the frequency response characteristic of the device is superior to that of a common capacitive voltage divider.
The above document cannot adjust the distance between the first conductive layer and the second conductive layer, and thus cannot adjust the size of the capacitor, which is difficult to cope with different actual working environments.
Disclosure of Invention
Accordingly, the present invention is directed to a non-contact voltage sensor for high voltage lines, which solves the above-mentioned problems of the prior art.
The technical scheme of the invention is realized as follows:
the invention provides a high-voltage line non-contact voltage sensor which comprises a filter and a capacitor fixing frame, wherein the filter and the capacitor fixing frame are connected with a high-voltage line, a mounting plate is arranged at the bottom of the filter, the capacitor fixing frame is arranged on two sides of the bottom of the mounting plate, a conducting layer arranged on the upper portion and an electrode arranged on the lower portion are arranged in the capacitor fixing frame, the conducting layer is fixedly connected with the inner wall of the capacitor fixing frame, the electrode is connected with the inner wall of the capacitor fixing frame in a sliding mode, a lifting plate is arranged in the middle of the capacitor fixing frame on two sides, a lifting assembly is arranged at the bottom of the mounting plate and connected with the lifting plate, and the electrodes in the capacitor fixing frame on two sides are respectively connected with the lifting plate through a connecting assembly.
Preferably, the lifting assembly comprises a screw and a supporting nut, a through hole is formed in the center of the lifting plate, the lifting plate is movably sleeved on the screw through the through hole, the supporting nut is located below the lifting plate and in threaded sleeve connection with the screw, and the bottom of the lifting plate is abutted to the top of the supporting nut.
Preferably, the screw rod is further sleeved with a locking nut in a threaded manner, the locking nut is located above the lifting plate, and the lifting plate is fixed on the screw rod through the locking nut and the supporting nut.
Preferably, coupling assembling includes first slider, second slider, preceding connecting plate and back connecting plate, the fixed frame of electric capacity around both sides inner wall seted up with outside communicating spout, first slider is located the front end of electrode, the second slider is located the rear end of electrode, the electrode respectively through first slider and second slider with spout sliding connection, the left and right sides the first slider of electrode passes through preceding connecting plate fixed connection, the left and right sides the second slider of electrode passes through back connecting plate fixed connection, the center of preceding connecting plate and back connecting plate is passed through lifter plate fixed connection.
Preferably, the side wall of the capacitor fixing frame is further provided with a distance measuring mechanism between the conductive layer and the electrode.
Preferably, distance measurement mechanism includes the scale, the scale is located electric capacity fixed block outer wall and is located one side of spout, the zero scale mark of scale with the base parallel and level of conducting layer, the top of first slider and second slider with the top parallel and level of electrode.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a non-contact voltage sensor for a high-voltage line, wherein the position of a conducting layer is fixed, a lifting plate can move up and down in the vertical direction under the action of a lifting assembly, an electrode is driven to ascend or descend in a capacitor fixing frame through a connecting assembly, and the distance between the conducting layer and the electrode is changed, so that the capacitor strength in the capacitor fixing frame can be quickly adjusted according to actual needs, and different working scenes can be quickly and better adapted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
fig. 3 is a top cross-sectional view of the capacitive mounting frame of the present invention.
In the figure, 1 filter, 2 capacitor fixing frames, 3 mounting plates, 4 conductive layers, 5 electrodes, 6 lifting plates, 701 first capacitors, 702 second capacitors, 8 screw rods, 9 supporting nuts, 10 through holes, 11 locking nuts, 12 first sliders, 13 second sliders, 14 front connecting plates, 15 rear connecting plates and 16 graduated scales.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, the invention provides a non-contact voltage sensor for a high-voltage line, which includes a filter 1 and a capacitor fixing frame 2 connected to the high-voltage line, wherein a mounting plate 3 is disposed at the bottom of the filter 1, the capacitor fixing frame 2 is disposed at two sides of the bottom of the mounting plate 3, a conductive layer 4 at the upper portion and an electrode 5 at the lower portion are mounted inside the capacitor fixing frame 2, the conductive layer 4 is fixedly connected to the inner wall of the capacitor fixing frame 2, the electrode 5 is slidably connected to the inner wall of the capacitor fixing frame 2, a lifting plate 6 is disposed in the middle of the capacitor fixing frame 2 at two sides, a lifting assembly is disposed at the bottom of the mounting plate 3, the lifting plate 6 is connected to the lifting assembly, and the electrodes 5 in the capacitor fixing frame 2 at two sides are respectively connected to the lifting plate 6 through connecting assemblies.
The conducting layer 4 is connected with the electrode 5 through a medium, under the action of the conducting layer 4 and the electrode 5, a first capacitor 701 is formed inside the capacitor fixing frame 2 on the left side, a second capacitor 702 is formed inside the capacitor fixing frame 2 on the right side, the first capacitor 701 and the second capacitor 702 form a low-voltage arm capacitor, the electrode 5, the ground and an air medium between the electrode 5 and the ground form a high-voltage arm capacitor, the high-voltage arm capacitor and the low-voltage arm capacitor are connected through a polar plate, and lead inductance is avoided, so that the frequency response characteristic of the device is superior to that of a common capacitive voltage divider. And the device need not to change once side wiring to can hang the operation of netting for a long time, the security is high and stability is high.
Can adjust the interval between electrode 5 and the conducting layer 4 according to the on-the-spot needs before this device of installation, the rigidity of conducting layer 4 is unchangeable, lifter plate 6 can do at vertical direction under lifting unit's effect and reciprocate, it rises or descends in the fixed frame 2 of electric capacity to drive electrode 5 through coupling assembling, change the interval between conducting layer 4 and the electrode 5, thereby can be according to the electric capacity intensity in the fixed frame 2 of actual need quick adjustment electric capacity, so that the different work scenes of faster better adaptation, save extra equipment cost.
The lifting assembly comprises a screw rod 8 and a supporting nut 9, a through hole 10 is formed in the center of the lifting plate 6, the lifting plate 6 is movably sleeved on the screw rod 8 through the through hole 10, the supporting nut 9 is located below the lifting plate 6 and in threaded sleeve connection with the screw rod 8, and the bottom of the lifting plate 6 is abutted to the top of the supporting nut 9.
A locking nut 11 is further sleeved on the screw rod 8 in a threaded manner, the locking nut 11 is located above the lifting plate 6, and the lifting plate 6 is fixed on the screw rod 8 through the locking nut 11 and the supporting nut 9.
Coupling assembling includes first slider 12, second slider 13, preceding connecting plate 14 and back connecting plate 15, the fixed frame 2 of electric capacity around both sides inner wall seted up with the communicating spout of outside, first slider 12 is located the front end of electrode 5, second slider 13 is located the rear end of electrode 5, electrode 5 respectively through first slider 12 and second slider 13 with spout sliding connection, the left and right sides first slider 12 of electrode 5 passes through preceding connecting plate 14 fixed connection, the left and right sides second slider 13 of electrode 5 passes through back connecting plate 15 fixed connection, preceding connecting plate 14 passes through with the center of back connecting plate 15 lifter plate 6 fixed connection.
Connecting plate 14 and back connecting plate 15 move along vertical direction before lifter plate 6 drives, preceding connecting plate 14 drives first slider 12 motion, back connecting plate 15 drives second slider 13 motion, thereby through the height that changes lifter plate 6, the electrode 5 that drives the left and right sides goes up and down in step, after the distance adjustment is accomplished, can be with the bottom of support nut 9 spin regulation to lifter plate 6, support lifter plate 6 through support nut 9, rotatory lock nut 11 makes it press down at the top of lifter plate 6 again, it is fixed to carry out the centre gripping through support nut 9 and lock nut 11 to lifter plate 6, improve the stability of lifter plate 6.
The side wall of the capacitive fixing frame 2 is also provided with a distance measuring mechanism between the conductive layer 4 and the electrode 5.
Distance measurement mechanism includes scale 16, scale 16 locates electric capacity fixed block outer wall and is located one side of spout, the zero scale mark of scale 16 with the base parallel and level of conducting layer 4, the top of first slider 12 and second slider 13 with the top parallel and level of electrode 5. Through the marking position of the first sliding block 12 or the second sliding block 13 and the graduated scale 16, the current distance between the electrode 5 and the conducting layer 4 can be intuitively known, and the distance between the electrode 5 and the conducting layer 4 can be accurately adjusted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a high tension line non-contact voltage sensor, includes the fixed frame of wave filter, the electric capacity of being connected with high tension line, its characterized in that, the bottom of wave filter is equipped with the mounting panel, the fixed frame of electric capacity is located the bottom both sides of mounting panel, the fixed frame internally mounted of electric capacity has the conducting layer that is located the upper portion and is located the electrode of lower part, the conducting layer with the inner wall fixed connection of the fixed frame of electric capacity, the electrode with the inner wall sliding connection of the fixed frame of electric capacity, both sides the centre of the fixed frame of electric capacity is equipped with the lifter plate, the bottom of mounting panel is equipped with lifting unit, the lifter plate with lifting unit connects, both sides the fixed frame of electric capacity in the electrode pass through coupling assembling respectively with the lifter plate is connected, coupling assembling includes first slider, second slider, preceding connecting plate and back connecting plate, the fixed connection is passed through to the first slider of the electrode, the left and right sides the second slider pass through the back connecting plate fixed connection of electrode the front connecting plate with the center fixed connection of lifting unit.
2. The non-contact voltage sensor of claim 1, wherein the lifting component comprises a screw and a support nut, a through hole is formed in the center of the lifting plate, the lifting plate is movably sleeved on the screw through the through hole, the support nut is located below the lifting plate and is in threaded sleeve connection with the screw, and the bottom of the lifting plate is abutted to the top of the support nut.
3. The non-contact voltage sensor of claim 2, wherein a locking nut is further sleeved on the screw in a threaded manner, the locking nut is located above the lifting plate, and the lifting plate is fixed on the screw through the locking nut and a supporting nut.
4. A high voltage line contactless voltage sensor according to claim 3 characterized in that the side walls of the capacitive fixing frame are further provided with distance measuring means between the conductive layer and the electrodes.
5. The non-contact voltage sensor for high voltage lines according to claim 4, wherein the distance measuring mechanism comprises a graduated scale, the graduated scale is disposed on the outer wall of the capacitor fixing block and located on one side of the sliding chute, the zero graduation line of the graduated scale is flush with the bottom edge of the conductive layer, and the tops of the first and second sliders are flush with the top of the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165542.0A CN113933564B (en) | 2021-09-30 | 2021-09-30 | Non-contact voltage sensor for high-voltage line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165542.0A CN113933564B (en) | 2021-09-30 | 2021-09-30 | Non-contact voltage sensor for high-voltage line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113933564A CN113933564A (en) | 2022-01-14 |
| CN113933564B true CN113933564B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111165542.0A Active CN113933564B (en) | 2021-09-30 | 2021-09-30 | Non-contact voltage sensor for high-voltage line |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426283B (en) * | 2011-08-25 | 2015-01-21 | 杭州天明环保工程有限公司 | System for testing current density and waveform of pole plate of electrostatic dust collector |
| TWI605392B (en) * | 2015-03-20 | 2017-11-11 | 茂丞科技股份有限公司 | Suspended capacitive fingerprint sensor and method of manufacturing such sensor |
| CN105067865B (en) * | 2015-07-29 | 2018-03-23 | 广东电网有限责任公司电力科学研究院 | Transformer station's full wave voltage comprehensive measurement device |
| CN111368568B (en) * | 2018-12-26 | 2024-09-06 | 紫光同芯微电子有限公司 | Novel non-contact high-speed demodulation circuit |
| CN112986723A (en) * | 2021-01-29 | 2021-06-18 | 广东柯理智能传感检测中心有限公司 | Test platform for testing non-contact electric field induction electricity-taking sensor |
| CN113156184B (en) * | 2021-03-09 | 2024-08-20 | 国网安徽省电力有限公司电力科学研究院 | GIS bus residual voltage measuring device based on electric field and calculating method thereof |
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2021
- 2021-09-30 CN CN202111165542.0A patent/CN113933564B/en active Active
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| CN113933564A (en) | 2022-01-14 |
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Effective date of registration: 20230727 Address after: 570101 Room 506, Huayu Building, Haifu Yiheng Road, Meilan District, Haikou City, Hainan Province Patentee after: Hainan Electric Power Industry Development Co.,Ltd. Address before: No.23, hairuihou Road, Longhua District, Haikou City, Hainan Province, 570100 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF HAINAN POWER GRID Co.,Ltd. |
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