CN203965590U - A kind of pick-up unit of outdoor high-voltage isolating switch - Google Patents
A kind of pick-up unit of outdoor high-voltage isolating switch Download PDFInfo
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- CN203965590U CN203965590U CN201420387797.0U CN201420387797U CN203965590U CN 203965590 U CN203965590 U CN 203965590U CN 201420387797 U CN201420387797 U CN 201420387797U CN 203965590 U CN203965590 U CN 203965590U
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- 238000005259 measurement Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 230000002421 anti-septic effect Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The utility model relates to a kind of pick-up unit of outdoor high-voltage isolating switch, comprise for detection of the sensing finger pressure measuring instrument of sensing finger pressure with for detection of the loop resistance measurement instrument of loop resistance, described sensing finger pressure measuring instrument comprises the pressure transducer for detection of high-voltage isolating switch sensing finger pressure, described pressure transducer is arranged between two fingertips of high voltage isolator, described loop resistance measurement instrument comprises for measuring the voltage and current measurement device of high voltage isolator loop current and voltage, two signal input parts of described voltage and current measurement device, moving with high voltage isolator respectively, static contact is corresponding to be connected.Solve that existing high voltage isolator can only rely on the existing quality of product, antiseptic property or field personnel's subjective experience and technical capability guarantees, can not promptly and accurately judge potential mechanical fault, have a strong impact on the problem of power supply reliability and electric power netting safe running.
Description
Technical field
The utility model relates to high voltage isolator, particularly outdoor high-voltage isolating switch, specifically a kind of pick-up unit of outdoor high-voltage isolating switch.
Background technology
In the high-voltage fence in modern age, be equiped with a large amount of disconnectores, electric system application disconnector divides, closes circuit, reaches the object of safety isolation.High voltage isolator mainly comprises current-carrying part, operating mechanism, gear train, insulated part and support base, current-carrying part comprises the dynamic and static contact (contact being commonly called as, plug-in strip) of minute corresponding setting etc., mainly works to close and cut-off circuit; Operating mechanism is to the action of disconnector, to provide the energy by modes such as manual, electronic, pneumatic, hydraulic pressure; Gear train comprises main shaft, connecting lever, connecting rod and operation insulator etc., and gear train is accepted the moment of operating mechanism, by motion transmission to contact, complete disconnector minute, feed motion; Insulated part comprises support insulator and operation insulator, realizes the insulation of live part and grounded part; Support base for various piece is fixed as one.
High voltage isolator can be divided into outdoor high-voltage isolating switch and indoor high-voltage isolating switch according to installation site, in the converting equipment of electric system, outdoor high-voltage isolating switch is in electric substation, to use more equipment, because outdoor high-voltage isolating switch long term exposure is in atmosphere, in use often there is four major problem:
(1) corrosion problem
Because outdoor high-voltage isolating switch long term exposure is in atmosphere, standing to expose to the sun and rain, the situation of each position corrosion is very serious.
(2) transmission problem
Due to reasons such as corrosion, distortion, usually there is jam problem in the running part of outdoor high-voltage isolating switch, has increased the weight of operational torque during operation, cause that high voltage isolator switching is not in place, separating brake difficulty, even drive link torsional deformation, connecting lever fracture.
(3) wire loop problems of excessive heat
The superheating phenomenon of disconnector galvanic circle mainly appears at the contact site of dynamic/static contact, and its immediate cause is to be exposed to the erosion that the contact in atmosphere is received dust, sleet, moisture, corrosive gas, causes surface in contact resistance to increase, and temperature rise is too high.
High voltage isolator is as electric system main staging device once, and the quality of its operation conditions directly affects the safe and reliable operation of transmission, distribution and the system of electric energy, if above problem can not solve carefully, will directly threaten electric power safety to produce.At present the state-detection means of high voltage isolator mainly rely on infrared, contact resistance, ultrasound wave carries out the detection of current-carrying part and support insulator, only to the mechanical fault of the high voltage isolator effective monitoring means of neither one also, can only rely on the existing quality of product and Corrosion Protection, or subjective experience and technical capability by field personnel are monitored, cause the uncertainty of high voltage isolator malfunction monitoring larger, reliability is lower, be difficult to guarantee safety in production, and increased staff's labour intensity.
Utility model content
The purpose of this utility model is to provide a kind of pick-up unit of outdoor high-voltage isolating switch, this pick-up unit can promptly and accurately detect the potential mechanical fault of high voltage isolator, get rid of potential safety hazard, in order to solve, existing high voltage isolator can only rely on the existing quality of product, antiseptic property or field personnel's subjective experience and technical capability guarantees, can not promptly and accurately judge potential mechanical fault, have a strong impact on the problem of power supply reliability and electric power netting safe running.
For achieving the above object, scheme of the present utility model is: a kind of pick-up unit of outdoor high-voltage isolating switch, comprise for detection of the sensing finger pressure measuring instrument of sensing finger pressure with for detection of the loop resistance measurement instrument of loop resistance, described sensing finger pressure measuring instrument comprises the pressure transducer for detection of high-voltage isolating switch sensing finger pressure, described pressure transducer is arranged between two fingertips of high voltage isolator, described loop resistance measurement instrument comprises for measuring the voltage and current measurement device of high voltage isolator loop current and voltage, two signal input parts of described voltage and current measurement device, moving with high voltage isolator respectively, static contact is corresponding to be connected.
Described pressure transducer is for proceeding to formula sensing finger pressure sensor.
Described pressure transducer is clamp type sensing finger pressure sensor.
Described voltage and current measurement device comprises measuring resistance, current source, normal voltage measuring unit and voltage measurement unit to be measured, described measuring resistance is connected with current source, described normal voltage measuring unit is connected in parallel on the two ends of measuring resistance, two signal input parts of described voltage measurement unit to be measured, respectively with the corresponding connection of dynamic and static contact of high voltage isolator.
The beneficial effect that the utility model reaches: the utility model can be realized high voltage isolator mechanical property is detected, can be according to testing result, objective, accurately disconnector state is judged, after disconnector Installation and Debugging, just need to detect its state, to determine whether, have primitiveness defect.After it puts the some time into operation, can to its state, detect at the scene, the variation tendency of analyzing its important parameter predicts whether defectiveness exists, thereby provides scientific basis for scheduled overhaul and repair based on condition of component.
Accompanying drawing explanation
Fig. 1 is that the utility model proceeds to formula sensing finger pressure sensor measurement schematic diagram;
Fig. 2 is the utility model clamp type sensing finger pressure sensor measurement schematic diagram;
Fig. 3 is the utility model loop resistance measurement instrument structure principle chart.
In figure, 1 is disconnector fingertip, and 2 is clamp type sensing finger pressure sensor, and 3 is adjusting bolt, and 4 is clamp handle, and 5 is handle, and 6 is keeper, and 7 for proceeding to formula sensing finger pressure sensor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The pick-up unit embodiment of outdoor high-voltage isolating switch of the present utility model:
Sensing finger pressure measuring instrument of the present utility model comprises the pressure transducer for detection of high-voltage isolating switch sensing finger pressure, and the signal output port of pressure transducer is connected with the input port of monitoring means.Pressure transducer is arranged between two fingertips of high voltage isolator, and when high voltage isolator closes a floodgate, two fingertips clamp, and pressure transducer detects the pressure that two fingertips produce.
As shown in Figure 1, when the fingertip of high voltage isolator is clamp type fingertip, select clamp type sensing finger pressure sensor 2 to detect sensing finger pressures, adjusts the length of L by adjusting bolt, L is the width of the contact that is coupled with fingertip.Clamp type sensing finger pressure sensor 2 is inserted in disconnector fingertip 1, hold handle 5 and clutch clamp handle 4, apply power F to clamp handle 4, now disconnector fingertip 1 is given the acting force of clamp type sensing finger pressure sensor 2, is sensing finger pressure.
As shown in Figure 2, when high voltage isolator is when proceeding to formula fingertip, selection proceeds to formula sensing finger pressure sensor 7 and detects sensing finger pressure, in the present embodiment, the external diameter that proceeds to formula sensing finger pressure sensor 7 equals L, and high voltage isolator will proceed to formula finger sensors 7 and put between two high voltage isolator fingertips 1 before closing a floodgate and putting in place, close a floodgate and end, 1 pair of high voltage isolator fingertip proceeds to formula sensing finger pressure sensor 7 will produce clamping force F.
As shown in Figure 3, loop resistance measurement instrument comprises the voltage and current detecting device for detection of high voltage isolator loop current and voltage, and the loop resistance measurement instrument of the present embodiment adopts electric current and voltage method test philosophy, also claims four-wire method measuring technology.Voltage and current measurement device comprises measuring resistance R
0, current source, normal voltage measuring unit and voltage measurement unit to be measured, measuring resistance R
0be connected in the loop of high voltage isolator with current source, normal voltage measuring unit is connected in parallel on the two ends of measuring resistance, and two signal input parts of voltage measurement unit to be measured, respectively with the corresponding connection of dynamic and static contact of high voltage isolator.Current source output steady current flows through measuring resistance R
0with testing resistance Rx, standard for manual sampling resistance R
0on voltage signal U
0, after filter amplifying processing, send into A/D and be converted to digital quantity, and then calculate current value I.Equally, the voltage signal Ux on sampling testing resistance Rx, sends into A/D through filtering, multistage amplification after processing and is converted to digital quantity, by formula, calculates resistance value Rx.Concrete computation process is as follows:
At present both at home and abroad to the effective monitoring means of high voltage isolator mechanical fault neither one, can only rely on the existing quality of product and antiseptic property and field personnel's subjective experience and technical capability, can not promptly and accurately judge potential mechanical fault, while often needing to use, but because of the fault operation failure of the aspects such as machinery, have a strong impact on power supply reliability and electric power netting safe running.The utility model is realized high voltage isolator mechanical property is detected, analyzed, can be objective, accurately disconnector state is judged.After disconnector Installation and Debugging, just need to detect its state, to determine whether, there is primitiveness defect.After it puts the some time into operation, can to its state, detect at the scene, the variation tendency of analyzing its important parameter predicts whether defectiveness exists, thereby provides scientific basis for repair based on condition of component.
Claims (4)
1. the pick-up unit of an outdoor high-voltage isolating switch, it is characterized in that: comprise for detection of the sensing finger pressure measuring instrument of sensing finger pressure with for detection of the loop resistance measurement instrument of loop resistance, described sensing finger pressure measuring instrument comprises the pressure transducer for detection of high-voltage isolating switch sensing finger pressure, described pressure transducer is arranged between two fingertips of high voltage isolator, described loop resistance measurement instrument comprises for measuring the voltage and current measurement device of high voltage isolator loop current and voltage, two signal input parts of described voltage and current measurement device, moving with high voltage isolator respectively, static contact is corresponding to be connected.
2. the pick-up unit of outdoor high-voltage isolating switch according to claim 1, is characterized in that described pressure transducer is for proceeding to formula sensing finger pressure sensor.
3. the pick-up unit of outdoor high-voltage isolating switch according to claim 1, is characterized in that described pressure transducer is clamp type sensing finger pressure sensor.
4. the pick-up unit of outdoor high-voltage isolating switch according to claim 1, it is characterized in that described voltage and current measurement device comprises measuring resistance, current source, normal voltage measuring unit and voltage measurement unit to be measured, described measuring resistance is connected with current source, described normal voltage measuring unit is connected in parallel on the two ends of measuring resistance, two signal input parts of described voltage measurement unit to be measured, respectively with the corresponding connection of dynamic and static contact of high voltage isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420387797.0U CN203965590U (en) | 2014-07-14 | 2014-07-14 | A kind of pick-up unit of outdoor high-voltage isolating switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420387797.0U CN203965590U (en) | 2014-07-14 | 2014-07-14 | A kind of pick-up unit of outdoor high-voltage isolating switch |
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| CN203965590U true CN203965590U (en) | 2014-11-26 |
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| CN201420387797.0U Expired - Lifetime CN203965590U (en) | 2014-07-14 | 2014-07-14 | A kind of pick-up unit of outdoor high-voltage isolating switch |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776997A (en) * | 2015-04-24 | 2015-07-15 | 句容华源电器设备有限公司 | Fault detection method for isolation switch transmission system |
| CN106371014A (en) * | 2016-11-30 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | Performance test system and method for disconnecting switch of power system |
| CN106610326A (en) * | 2017-01-06 | 2017-05-03 | 彭彦军 | Tulip contact pressure electronic measuring instrument |
| CN107063537A (en) * | 2017-01-03 | 2017-08-18 | 国家电网公司 | Fist formula disconnector contact-finger clamps force tester |
| CN110568353A (en) * | 2019-09-16 | 2019-12-13 | 湖南长高高压开关集团股份公司 | Isolating switch delivery inspection assembly line |
| CN112067981A (en) * | 2020-07-30 | 2020-12-11 | 大唐大丰风电开发有限公司 | Real-time monitoring system for isolating switch |
| CN112880896A (en) * | 2021-01-05 | 2021-06-01 | 国网内蒙古东部电力有限公司电力科学研究院 | Isolating switch contact finger pressure sensor, tester and method |
-
2014
- 2014-07-14 CN CN201420387797.0U patent/CN203965590U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776997A (en) * | 2015-04-24 | 2015-07-15 | 句容华源电器设备有限公司 | Fault detection method for isolation switch transmission system |
| CN106371014A (en) * | 2016-11-30 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | Performance test system and method for disconnecting switch of power system |
| CN107063537A (en) * | 2017-01-03 | 2017-08-18 | 国家电网公司 | Fist formula disconnector contact-finger clamps force tester |
| CN107063537B (en) * | 2017-01-03 | 2019-07-12 | 国家电网公司 | Fist formula disconnector contact-finger clamps force tester |
| CN106610326A (en) * | 2017-01-06 | 2017-05-03 | 彭彦军 | Tulip contact pressure electronic measuring instrument |
| CN110568353A (en) * | 2019-09-16 | 2019-12-13 | 湖南长高高压开关集团股份公司 | Isolating switch delivery inspection assembly line |
| CN112067981A (en) * | 2020-07-30 | 2020-12-11 | 大唐大丰风电开发有限公司 | Real-time monitoring system for isolating switch |
| CN112880896A (en) * | 2021-01-05 | 2021-06-01 | 国网内蒙古东部电力有限公司电力科学研究院 | Isolating switch contact finger pressure sensor, tester and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
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| CX01 | Expiry of patent term |