CN104569546B - A kind of high-voltage line current measuring device - Google Patents
A kind of high-voltage line current measuring device Download PDFInfo
- Publication number
- CN104569546B CN104569546B CN201410825512.1A CN201410825512A CN104569546B CN 104569546 B CN104569546 B CN 104569546B CN 201410825512 A CN201410825512 A CN 201410825512A CN 104569546 B CN104569546 B CN 104569546B
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- Prior art keywords
- voltage line
- measuring coil
- resin
- case
- display
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- Measurement Of Resistance Or Impedance (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
A kind of high-voltage line current measuring device, it includes measuring coil, signal processing circuit, display and insulation lifting arm, the measuring coil is encapsulated in resin-case and parallel with tested high-voltage line, the top of the resin-case is fixed with distance rod, the upper end of distance rod is provided with the arc pallet corresponding with tested high-voltage line, the upper end of the insulation lifting arm is connected with resin-case, the display is fixed on insulation lifting arm, the input termination measuring coil of the signal processing circuit, output termination display.Measuring coil is used as the sensor of alternating current by the present invention, because the positioning of measuring coil is simple, it is not necessary to which operator operates fool proof close to tested wire.The effect of distance rod is measuring coil is kept fixed distance with tested wire, ensures the measurement accuracy of electric current.The present apparatus can quickly measure high pressure line current, and easy to use, safe operation, suitable for electrical overhaul librarian use.
Description
Technical field
The present invention relates to a kind of device that can quickly measure alternating current in high-voltage line, belong to field of measuring technique.
Background technology
When carrying out electrical overhaul operation, it is often necessary to the alternating current in direct measurement circuit in the case of continuous open circuit
Stream.At present, the portable instrument for measuring alternating current is typically all clamp on amperemeter, and clamp on amperemeter is mutual by centre path current
What sensor and ammeter combined.Pincer is made in the iron core of straight-through current transformer, covers pincerlike iron core when measuring electric current
On tested wire, just turn into the primary winding of current transformer through pincerlike tested wire unshakable in one's determination, wherein when passing through electric current
Just electric current is induced in secondary coil, the electricity of test line is measured using the ammeter being connected with secondary coil
Stream.
When measuring electric current using clamp on amperemeter, operator must be close to tested wire could be by straight-through current transformer
Pincerlike iron core be enclosed on tested wire, therefore this ammeter is only applicable to measure the relatively low circuit of voltage, if utilizing pincers
The higher circuit of shape ammeter measurement voltage, then easily cause electric shock accidents.Therefore, how quickly, accurate measurement high-voltage line
Electric current be always perplex the problem about technical staff.
The content of the invention
It is an object of the invention to the drawback for prior art, there is provided a kind of high-voltage line easy to use, safe operation
Current measuring device.
Problem of the present invention is realized with following technical proposals：
A kind of high-voltage line current measuring device, composition include measuring coil, signal processing circuit, display and insulation and lifted
Rising stem, the measuring coil are encapsulated in resin-case and parallel with tested high-voltage line, and the top of the resin-case is fixed with
Distance rod, the upper end of the distance rod are provided with the arc pallet corresponding with tested high-voltage line, the upper end of the insulation lifting arm
It is connected with resin-case, the display is fixed on insulation lifting arm, the input termination measurement line of the signal processing circuit
Circle, output termination display.
Above-mentioned high-voltage line current measuring device, the signal processing circuit include single-chip microcomputer, wave filter, signal amplifier,
Triode and resistance, filtered device and signal amplifier are connected to the base stage of triode successively for the output signal of measuring coil, described
The colelctor electrode of triode connects positive source, and emitter stage connects the input port of single-chip microcomputer and resistance grounded, the single-chip microcomputer it is defeated
Exit port connects display.
Above-mentioned high-voltage line current measuring device, the circuit board of the signal processing circuit are arranged on the resin shell of measuring coil
In the cavity in internal portion.
Above-mentioned high-voltage line current measuring device, the resin-case are the cylinder coaxial with measuring coil, the spacing
Bar sets two, is separately fixed at the both ends of resin-case.
Above-mentioned high-voltage line current measuring device, the insulation lifting arm is expansion link.
Measuring coil is used as the sensor of alternating current by the present invention, due to being free of iron core in measuring coil, is not in
The nonlinear problem that usual clamp on amperemeter occurs by iron core magnetic saturation like that, therefore survey measurements is accurate, and also it positions letter
It is single, it is not necessary to which that operator is also fool proof close to tested wire, operation.The effect of distance rod is to make measuring coil and tested wire
Fixed distance is kept, ensures the measurement accuracy of electric current.The present apparatus can quickly measure high pressure line current, except can measure 10KV with
On high pressure outside, also measurable below 10KV power line, its easy to use, safe operation is special standby to be suitable to electrical overhaul personnel
Temporary detecting uses.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
The structural representation that it is the present invention that Fig. 1, which is,；
Fig. 2 is Fig. 1 left view；
Fig. 3 is A-A sectional views；
Fig. 4 is measurement electrical schematic diagram.
In figure respectively marked as：1st, high-voltage line, 2, distance rod, 3, insulation lifting arm, 4, arc pallet, 5, circuit board, 6, lid
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
7th, measuring coil L, display XS and signal processing circuit.Wherein, signal processing circuit includes single-chip microcomputer U1, wave filter LB, letter
Number amplifier FD, triode Q and resistance R.
The measuring coil L being encapsulated in resin-case 7 is the current sensor of the present apparatus, and measuring coil L is encapsulated in resin
After in housing 7, its structural parameters is sufficiently stable, due to no iron core, in the absence of magnetic saturation phenomenon, therefore not only has higher
Detectivity, also there is very high functional reliability.During current measurement, measuring coil L is located at tested high-voltage line 1
Lower section and parallel with high-voltage line 1, when flowing through electric current in high-voltage line 1, measuring coil L both ends produce induced electromotive force, work as survey
Coil L and high-voltage line 1 timing of distance one are measured, the electromotive force increases, signal processing circuit with the increase of high-voltage conducting wires electric current
The current value of high-voltage line 1 is calculated according to the size of the electromotive force and the distance between measuring coil L and high-voltage line 1, and passed through
Display XS comes out presentation of information, is read for operating personnel.In order to obtain enough measurement accuracy, measuring coil L must be with
High-voltage line 1 keeps constant distance, therefore respectively sets a distance rod 2, distance rod 2 at the measuring coil L both ends of resin-case 7
Upper end be fixed with arc pallet 4, if by the support of arc pallet 4 of two upper ends of distance rod 2 in the bottom of high-voltage line 1, measurement
Coil L will keep fixed distance and parallel with high-voltage line 1 with high-voltage line 1.The length of distance rod 2 can be according to tested electricity
The height of pressure is divided into different sizes, with corresponding different measurement gear.
Signal processing circuit includes single-chip microcomputer U1, wave filter LB, signal amplifier FD, triode Q and resistance R, single-chip microcomputer
U1 uses 80C51, and the circuit board of signal processing circuit is arranged in the cavity in resin-case 7, both reduces whole device
Volume, signal processing circuit is also prevented from by environmental pollution.
The operation principle of signal processing circuit is as follows：
Signal amplifier FD is sent into after the filtered device LB filtering of signal of measuring coil L outputs, the signal amplifies through signal
Device FD amplifies and single-chip microcomputer U1 is sent into after triode Q Shape corrections.Single-chip microcomputer U1 according to the amplitude and measuring coil L of the signal with
The distance between high-voltage line 1 calculates the current value of high-voltage line 1, and result of calculation is sent into display XS, and operator is from display
Device XS reads the current value measured.
In order to ensure the safety of operator, operator should keep enough distances with display XS, to see operator clearly
Reading, display XS use the light-emitting diode display of high brightness.
Insulation lifting arm 3 uses expansion link, is easy to measure the high-voltage line of different height.
Claims (3)
1. a kind of high-voltage line current measuring device, it is characterized in that, it includes measuring coil (L), signal processing circuit, display
(XS) and insulation lifting arm (3), the measuring coil (L) is encapsulated in resin-case (7) and parallel with tested high-voltage line (1),
The top of the resin-case (7) is fixed with distance rod (2), and the upper end of the distance rod (2) is provided with and tested high-voltage line (1) phase
Corresponding arc pallet (4), the upper end of the insulation lifting arm (3) are connected with resin-case (7), and the display (XS) is fixed
On insulation lifting arm (3), the input termination measuring coil (L) of the signal processing circuit, output termination display (XS)；
The signal processing circuit includes single-chip microcomputer (U1), wave filter (LB), signal amplifier (FD), triode (Q) and resistance
(R), filtered device (LB) and signal amplifier (FD) are connected to triode (Q) base stage to the output signal of measuring coil (L) successively,
The colelctor electrode of the triode (Q) connects positive source, and emitter stage connects the input port of single-chip microcomputer (U1) and is grounded through resistance (R),
The output port of the single-chip microcomputer (U1) connects display (XS)；
The resin-case (7) is the cylinder coaxial with measuring coil (L), and the distance rod (2) sets two, fixes respectively
At the both ends of resin-case (7), make measuring coil (L) that the distance and and high-voltage line of fixation will be kept with high-voltage line (1)
(1) it is parallel.
2. a kind of high-voltage line current measuring device according to claim 1, it is characterized in that, the electricity of the signal processing circuit
Road plate (5) is arranged in the cavity of resin-case (7) inside of measuring coil (L).
3. a kind of high-voltage line current measuring device according to claim 2, it is characterized in that, the 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 CN104569546A (en) | 2015-04-29 |
| CN104569546B true CN104569546B (en) | 2018-04-10 |
Family
ID=53086086
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104569546B (en) |
Families Citing this family (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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|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104569546A (en) | 2015-04-29 |
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Granted publication date: 20180410 Termination date: 20211228 |