CN104569546A - High-voltage line current measuring device - Google Patents
High-voltage line current measuring device Download PDFInfo
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- CN104569546A CN104569546A CN201410825512.1A CN201410825512A CN104569546A CN 104569546 A CN104569546 A CN 104569546A CN 201410825512 A CN201410825512 A CN 201410825512A CN 104569546 A CN104569546 A CN 104569546A
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- measuring coil
- line
- resin
- processing circuit
- signal processing
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- Measurement Of Resistance Or Impedance (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
A high-voltage line current measuring device comprises a measuring coil, a signal processing circuit, a display and an insulation lifting rod, wherein the measuring coil is packaged in a resin case and parallel with a to-be-measured high-voltage line, a distance rod is fixed at the upper part of the resin case, an arc-shaped support plate corresponding to the to-be-measured high-voltage line is arranged at the upper end of the distance rod, the upper end of the insulation lifting rod is connected with the resin case, the display is fixed on the insulation lifting rod, an input end of the signal processing circuit is connected with the measuring coil, and an output end of the signal processing circuit is connected with the display. The measuring coil is used as a sensor of the alternating current, the measuring coil is simple to position, and an operator is not required to be close to the to-be-measured line, so that the operation is very safe. The distance rod plays a role in enabling the measuring coil and the to-be-measured line to keep at a fixed distance, so that the current measurement accuracy is guaranteed. The device can measure the current of the high-voltage line quickly and is convenient to use, safe to operate and suitable for electrical maintainers.
Description
Technical field
The present invention relates to a kind of can the device of alternating current in Quick Measurement hi-line, belong to field of measuring technique.
Background technology
When carrying out electrical overhaul operation, usually to need when not disconnecting circuit the alternating current in direct metering circuit.At present, the portable instrument measuring alternating current is all generally clamp on amperemeter, and clamp on amperemeter is combined by straight-through current transformer and reometer.The iron core of straight-through current transformer makes pincer, when measuring electric current, pincerlike iron core is enclosed within tested wire, the primary winding of current transformer is just become through pincerlike tested wire unshakable in one's determination, wherein just in secondary coil, induce electric current by during electric current, utilize the reometer be connected with secondary coil just can measure the electric current of test line.
When using clamp on amperemeter to measure electric current, the pincer iron core of straight-through current transformer could must be enclosed within tested wire near tested wire by operator, therefore this reometer is only applicable to the lower circuit of measuring voltage, if utilize the circuit that clamp on amperemeter measuring voltage is higher, be then easy to cause electric shock accidents.Therefore, how fast, the electric current of Measurement accuracy hi-line is a puzzlement relevant technologies personnel's difficult problem always.
Summary of the invention
The object of the invention is to the drawback for prior art, a kind of hi-line current measuring device of easy to use, handling safety is provided.
Problem of the present invention realizes with following technical proposals:
A kind of hi-line current measuring device, formation comprises measuring coil, signal processing circuit, display and insulation lifting arm, it is interior and parallel with tested hi-line that described measuring coil is encapsulated in resin-case, the top of described resin-case is fixed with distance rod, the upper end of described distance rod is provided with the arc pallet corresponding with tested hi-line, the upper end of described insulation lifting arm is connected with resin-case, described display is fixed on insulation lifting arm, the input termination measuring coil of described signal processing circuit, exports termination display.
Above-mentioned hi-line current measuring device, described signal processing circuit comprises single-chip microcomputer, wave filter, signal amplifier, triode and resistance, the output signal of measuring coil is connected to the base stage of triode successively through wave filter and signal amplifier, the collector of described triode connects positive source, emitter connects the input port of single-chip microcomputer and resistance grounded, and the output port of described single-chip microcomputer connects display.
Above-mentioned hi-line current measuring device, the circuit board of described signal processing circuit is arranged in the cavity of resin-case inside of measuring coil.
Above-mentioned hi-line current measuring device, described resin-case is the right cylinder coaxial with measuring coil, and described distance rod arranges two, is separately fixed at the two ends of resin-case.
Above-mentioned hi-line current measuring device, described insulation lifting arm is expansion link.
Measuring coil is used as the sensor of alternating current by the present invention, owing to not containing iron core in measuring coil, there will not be the nonlinear problem that usual clamp on amperemeter occurs because iron core magnetic is saturated like that, therefore survey measurements is accurate, and its location is simple, do not need operator near tested wire, operate fool proof yet.The effect of distance rod is the distance making measuring coil and tested wire keep fixing, ensures the measuring accuracy of electric current.This device can Quick Measurement hi-line electric current, and decapacitation is measured outside the high pressure of more than 10KV, also can measure the power lead of below 10KV, its easy to use, handling safety, and the special standby electrical overhaul personnel temporary detecting that is suitable for uses.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is for being structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is A-A cut-open view;
Fig. 4 is for measuring electrical schematic diagram.
In figure, each label is: 1, hi-line, 2, distance rod, 3, insulation lifting arm, 4, arc pallet, 5, circuit board, 6, cover plate, 7, resin-case, U1, single-chip microcomputer, LB, wave filter, FD, signal amplifier, Q, triode, R, resistance, L, measuring coil, XS, display.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present invention includes distance rod 2, insulation lifting arm 3, arc pallet 4, resin-case 7, measuring coil L, display XS and signal processing circuit.Wherein, signal processing circuit comprises single-chip microcomputer U1, wave filter LB, signal amplifier FD, triode Q and resistance R.
The measuring coil L be encapsulated in resin-case 7 is the current sensor of this device, measuring coil L is encapsulated in after in resin-case 7, its structural parameters are very stable, owing to there is no iron core, there is not magnetic saturation phenomenon, therefore not only there is higher detection sensitivity, also there is very high functional reliability.In current measurement process, measuring coil L is positioned at the below of tested hi-line 1 and parallel with hi-line 1, when flowing through electric current in hi-line 1, the two ends of measuring coil L produce induced electromotive force, when distance one timing of measuring coil L and hi-line 1, this electromotive force increases with the increase of high-voltage conducting wires electric current, signal processing circuit calculates the current value of hi-line 1 according to the size of this electromotive force and the distance between measuring coil L and hi-line 1, and by display XS by information displaying out, read for operating personnel.In order to obtain enough measuring accuracy, measuring coil L must keep constant distance with hi-line 1, therefore a distance rod 2 is respectively set at resin-case 7 two ends of measuring coil L, the upper end of distance rod 2 is fixed with arc pallet 4, as long as hold in the palm in the bottom of hi-line 1 by the arc pallet 4 of two distance rod 2 upper ends, measuring coil L will keep fixing distance and parallel with hi-line 1 with hi-line 1.The length of distance rod 2 can be divided into different sizes according to the height of tested voltage, with the measurement gear that correspondence is different.
Signal processing circuit comprises single-chip microcomputer U1, wave filter LB, signal amplifier FD, triode Q and resistance R, single-chip microcomputer U1 adopts 80C51, the circuit board of signal processing circuit is arranged in the cavity in resin-case 7, both reduced the volume of whole device, signal processing circuit can also be prevented to be subject to environmental pollution.
The principle of work of signal processing circuit is as follows:
The signal that measuring coil L exports sends into signal amplifier FD after wave filter LB filtering, and this signal amplifies through signal amplifier FD and sends into single-chip microcomputer U1 after triode Q Shape correction.Single-chip microcomputer U1 calculates the current value of hi-line 1 according to the amplitude of this signal and the distance between measuring coil L and hi-line 1, and result of calculation is sent into display XS, and operator reads the current value recorded from display XS.
In order to ensure the safety of operator, operator should keep enough distances with display XS, and for making operator see reading clearly, display XS adopts the light-emitting diode display of high brightness.
Insulation lifting arm 3 adopts expansion link, is convenient to the hi-line measuring differing heights.
Claims (5)
1. a hi-line current measuring device, it is characterized in that, it comprises measuring coil (L), signal processing circuit, display (XS) and insulation lifting arm (3), it is interior and parallel with tested hi-line (1) that described measuring coil (L) is encapsulated in resin-case (7), the top of described resin-case (7) is fixed with distance rod (2), the upper end of described distance rod (2) is provided with the arc pallet (4) corresponding with tested hi-line (1), the upper end of described insulation lifting arm (3) is connected with resin-case (7), described display (XS) is fixed in insulation lifting arm (3), the input termination measuring coil (L) of described signal processing circuit, export termination display (XS).
2. a kind of hi-line current measuring device according to claim 1, it is characterized in that, described signal processing circuit comprises single-chip microcomputer (U1), wave filter (LB), signal amplifier (FD), triode (Q) and resistance (R), the output signal of measuring coil (L) is connected to the base stage of triode (Q) successively through wave filter (LB) and signal amplifier (FD), the collector of described triode (Q) connects positive source, emitter connect single-chip microcomputer (U1) input port and through resistance (R) ground connection, the output port of described single-chip microcomputer (U1) connects display (XS).
3. a kind of hi-line current measuring device according to claim 1 and 2, is characterized in that, the circuit board (5) of described signal processing circuit is arranged in the cavity of resin-case (7) inside of measuring coil (L).
4. a kind of hi-line current measuring device according to claim 3, is characterized in that, described resin-case (7) is the right cylinder coaxial with measuring coil (L), and described distance rod (2) arranges two, is separately fixed at the two ends of resin-case (7).
5. a kind of hi-line current measuring device according to claim 4, is characterized in that, described insulation lifting arm (3) is expansion link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410825512.1A CN104569546B (en) | 2014-12-28 | 2014-12-28 | A kind of high-voltage line current measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410825512.1A CN104569546B (en) | 2014-12-28 | 2014-12-28 | A kind of high-voltage line current measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104569546A true CN104569546A (en) | 2015-04-29 |
| CN104569546B CN104569546B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410825512.1A Expired - Fee Related CN104569546B (en) | 2014-12-28 | 2014-12-28 | A kind of high-voltage line current measuring device |
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| CN (1) | CN104569546B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547334A (en) * | 2015-12-15 | 2016-05-04 | 重庆梅安森科技股份有限公司 | Multi-shift sensor |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177949Y (en) * | 1993-11-25 | 1994-09-21 | 苏州市高压电器厂 | Electroscope |
| CN2779411Y (en) * | 2005-04-22 | 2006-05-10 | 张贵新 | An air-core coil current sensor for measuring power frequency heavy current |
| CN102998520A (en) * | 2012-12-25 | 2013-03-27 | 黄石供电公司变电运行中心 | Digital display high-voltage electroscope of telescopic rod |
| CN103166137A (en) * | 2013-02-22 | 2013-06-19 | 辽宁省电力有限公司丹东供电公司 | Multifunctional and combined type intelligent insulating rod |
| CN103499799A (en) * | 2013-09-30 | 2014-01-08 | 国家电网公司 | Strong and weak current dual-detection method of high-voltage electroscope |
| CN103630727A (en) * | 2013-10-30 | 2014-03-12 | 合保电气（芜湖）有限公司 | Load checking ammeter |
| CN203798955U (en) * | 2014-04-23 | 2014-08-27 | 国家电网公司 | Pull rod type low-voltage line leakage fault detecting instrument |
| CN203825044U (en) * | 2014-04-17 | 2014-09-10 | 国家电网公司 | Sensor stabilizing device |
| CN104133104A (en) * | 2014-08-13 | 2014-11-05 | 国家电网公司 | Novel telescopic type low-voltage tong-type ammeter |
| CN204028209U (en) * | 2013-12-28 | 2014-12-17 | 国家电网公司 | Quick high aloft electroscope |
| CN204422629U (en) * | 2014-12-28 | 2015-06-24 | 国家电网公司 | A kind of non-contact alternating current flow measuring apparatus |
-
2014
- 2014-12-28 CN CN201410825512.1A patent/CN104569546B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177949Y (en) * | 1993-11-25 | 1994-09-21 | 苏州市高压电器厂 | Electroscope |
| CN2779411Y (en) * | 2005-04-22 | 2006-05-10 | 张贵新 | An air-core coil current sensor for measuring power frequency heavy current |
| CN102998520A (en) * | 2012-12-25 | 2013-03-27 | 黄石供电公司变电运行中心 | Digital display high-voltage electroscope of telescopic rod |
| CN103166137A (en) * | 2013-02-22 | 2013-06-19 | 辽宁省电力有限公司丹东供电公司 | Multifunctional and combined type intelligent insulating rod |
| CN103499799A (en) * | 2013-09-30 | 2014-01-08 | 国家电网公司 | Strong and weak current dual-detection method of high-voltage electroscope |
| CN103630727A (en) * | 2013-10-30 | 2014-03-12 | 合保电气（芜湖）有限公司 | Load checking ammeter |
| CN204028209U (en) * | 2013-12-28 | 2014-12-17 | 国家电网公司 | Quick high aloft electroscope |
| CN203825044U (en) * | 2014-04-17 | 2014-09-10 | 国家电网公司 | Sensor stabilizing device |
| CN203798955U (en) * | 2014-04-23 | 2014-08-27 | 国家电网公司 | Pull rod type low-voltage line leakage fault detecting instrument |
| CN104133104A (en) * | 2014-08-13 | 2014-11-05 | 国家电网公司 | Novel telescopic type low-voltage tong-type ammeter |
| CN204422629U (en) * | 2014-12-28 | 2015-06-24 | 国家电网公司 | A kind of non-contact alternating current flow measuring apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547334A (en) * | 2015-12-15 | 2016-05-04 | 重庆梅安森科技股份有限公司 | Multi-shift sensor |
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| CN104569546B (en) | 2018-04-10 |
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