CN104777390A - Pilot frequency testing device for power-frequency parameters of line - Google Patents
Pilot frequency testing device for power-frequency parameters of line Download PDFInfo
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- CN104777390A CN104777390A CN201510221502.1A CN201510221502A CN104777390A CN 104777390 A CN104777390 A CN 104777390A CN 201510221502 A CN201510221502 A CN 201510221502A CN 104777390 A CN104777390 A CN 104777390A
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- sampling circuit
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- frequency
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Abstract
The invention relates to a pilot frequency testing device for power-frequency parameters of a line. The pilot frequency testing device comprises an anti-interference transformer, a one-phase anti-interference variable-frequency power source, a current sampling circuit, a voltage sampling circuit, a control mainboard and input-output equipment. The front side of the anti-interference transformer is connected with the one-phase anti-interference variable-frequency power source, the rear side of the anti-interference transformer is connected with the current sampling circuit and the voltage sampling circuit, the one-phase anti-interference variable-frequency power source, the current sampling circuit and the voltage sampling circuit are all connected with the control mainboard, and the control mainboard is connected with the input-output equipment. The input-output equipment comprises a key, a liquid crystal display screen, a printer and a communication port. The pilot frequency testing device has high anti-interference currents and is small in size, light, easy to operate and capable of eliminating influences of power-frequency interference, and accuracy of obtained line parameter measurement data is high.
Description
Technical field
The invention belongs to ultra-high-tension power transmission line field, be specifically related to a kind of circuit power frequency parameter alien frequencies proving installation.
Background technology
As important component part in electric system, the power frequency parameter of transmission line of electricity needs accurately to be measured.But due to the impact of the factors such as geography, environment, many circuits interfere with each other, the problem such as high induction voltage, large induction current can be produced between circuit, make the data measured inaccurate.
Usually power frequency method or alien frequencies method is used at present on measurement ultra-high-tension power transmission line power frequency parameter.Power frequency method needs to use powerful transformer, pressure regulator, and the volume and weight of testing tool is very huge, and test process is loaded down with trivial details.Alien frequencies method comparatively power frequency method is good, but all uses a three-phase transformer or three single transformers at present, and the weight of equipment that anti-interference current is large is sunk, heavy; Lightweight, anti-interference current is little.Or wiring is more and complicated, can not be full-automatic.
Summary of the invention
The object of the present invention is to provide a kind of wiring simple, lightweight, anti-interference current is large, the circuit power frequency parameter alien frequencies proving installation all automatically measured.
The technical solution adopted for the present invention to solve the technical problems is: circuit power frequency parameter alien frequencies proving installation, comprise anti-interference transformer, single-phase anti-interference variable-frequency power sources, current sampling circuit, voltage sampling circuit, control mainboard and input-output device, the anti-interference variable-frequency power sources of individual event is connected before described anti-interference transformer, connect current sampling circuit and voltage sampling circuit below, the anti-interference variable-frequency power sources of described individual event, current sampling circuit and voltage sampling circuit are all connected with control mainboard, described control mainboard is connected with input-output device, described input-output device comprises button, LCDs, printer and PORT COM.
Particularly, described button, LCDs, printer, PORT COM are all arranged on the panel of alien frequencies proving installation, and described panel is also provided with and suddenly stops button and pilot lamp, described urgency is stopped button and is connected with control mainboard with pilot lamp.
Alien frequencies proving installation of the present invention adopts integral structure, and built-in single-phase anti-interference variable-frequency power sources can export the voltage of non-power frequency, by the powerful interference of using the analytical calculation of fourier method can eliminate on-the-spot power frequency, obtains measurement data accurately.
The present invention has following beneficial effect: different-frequency measure device anti-interference current of the present invention is large, volume is little, lightweight, simple to operate, and can eliminate the impact of Hz noise, the line parameter circuit value measurement data accuracy of acquisition is high.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present invention;
Fig. 2 is instrument panel schematic diagram of the present invention;
Fig. 3 is the wiring diagram of embodiments of the invention one;
Fig. 4 is the wiring diagram of embodiments of the invention two;
Fig. 5 is the wiring diagram of embodiments of the invention three.
In figure, 1, single-phase anti-interference variable-frequency power sources, 2, anti-interference transformer, 3, current sampling circuit, 4, voltage sampling circuit, 5, control mainboard, 6, button, 7, LCDs, 8, printer, 9, PORT COM, 10, anxious stop button, 11, pilot lamp, 12, voltage measurement, 13, instrument exports, 14, test line, 15, opposite end is unsettled, and 16, opposite end ground connection.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.
As Fig. 1, shown in Fig. 2, circuit power frequency parameter alien frequencies proving installation, comprise anti-interference transformer, single-phase anti-interference variable-frequency power sources, current sampling circuit, voltage sampling circuit, control mainboard and input-output device, the anti-interference variable-frequency power sources of individual event is connected before described anti-interference transformer, connect current sampling circuit and voltage sampling circuit below, the anti-interference variable-frequency power sources of described individual event, current sampling circuit and voltage sampling circuit are all connected with control mainboard, described control mainboard is connected with input-output device, described input-output device comprises button, LCDs, printer and PORT COM, described button, LCDs, printer, PORT COM is all arranged on the panel of alien frequencies proving installation, described panel is also provided with and suddenly stops button and pilot lamp, described urgency is stopped button and is connected with control mainboard with pilot lamp.
During measurement, user to be given an order signal to control mainboard 5 by button 6, controlling single-phase anti-interference variable-frequency power sources 1 outputs signal in anti-interference transformer 2, through voltage sampling circuit 4 and current sampling circuit 3, the signal of collection is given and controls mainboard 5, calculate data cases etc. by control mainboard 5 and pass to LCDs 7, next step operation push-button after user sees, can be carried out.After measurement terminates, can be printed by printer 8, or be stored into external memory storage by PORT COM 9.When suddenly stopping button 10 for running into accident in test process, all output of emergency cut-off, makes wiring ground connection, ensures safety.Button 6 part can reset to master control system, input command, and pilot lamp 15 can be used for pointing out situation about going wrong in test.
Fig. 3,4,5 is the wiring diagram of the different situations of parameter tester.Fig. 3 is the wiring of positive sequence electric capacity, the wiring of zero sequence electric capacity, and coupling capacitance measures wiring, and Fig. 4 is positive sequence impedance wiring, zero sequence impedance wiring, and Fig. 5 is that wiring measured by line mutual-inductance.
Before measurement, connect the line by diagram, this proving installation adopts four-wire method connection principle, and instrument wiring is very simple, and inner automatic switchover, completes all measurements, do not need manual intervention, can draw measurement result fast and accurately.
The present invention is not limited to above-mentioned embodiment, and anyone should learn the structure change made under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
The technology that the present invention does not describe in detail, shape, structure part are known technology.
Claims (2)
1. circuit power frequency parameter alien frequencies proving installation, it is characterized in that, comprise anti-interference transformer, single-phase anti-interference variable-frequency power sources, current sampling circuit, voltage sampling circuit, control mainboard and input-output device, the anti-interference variable-frequency power sources of individual event is connected before described anti-interference transformer, connect current sampling circuit and voltage sampling circuit below, the anti-interference variable-frequency power sources of described individual event, current sampling circuit and voltage sampling circuit are all connected with control mainboard, described control mainboard is connected with input-output device, described input-output device comprises button, LCDs, printer and PORT COM.
2. circuit power frequency parameter alien frequencies proving installation according to claim 1, it is characterized in that, described button, LCDs, printer, PORT COM are all arranged on the panel of alien frequencies proving installation, described panel is also provided with and suddenly stops button and pilot lamp, described urgency is stopped button and is connected with control mainboard with pilot lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221502.1A CN104777390A (en) | 2015-05-04 | 2015-05-04 | Pilot frequency testing device for power-frequency parameters of line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221502.1A CN104777390A (en) | 2015-05-04 | 2015-05-04 | Pilot frequency testing device for power-frequency parameters of line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104777390A true CN104777390A (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510221502.1A Pending CN104777390A (en) | 2015-05-04 | 2015-05-04 | Pilot frequency testing device for power-frequency parameters of line |
Country Status (1)
| Country | Link |
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| CN (1) | CN104777390A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034117A (en) * | 2007-04-02 | 2007-09-12 | 武汉大学 | Power transmission line power frequency parameters measuring method and device |
| CN201886113U (en) * | 2010-12-14 | 2011-06-29 | 四川电力试验研究院 | Pilot-frequency and high-current multifunctional grounding parameter testing system based on variable frequency power supply |
| CN201965178U (en) * | 2010-12-29 | 2011-09-07 | 长沙金艺电子科技有限公司 | Parameter tester for pilot frequency line |
| CN204008885U (en) * | 2014-06-23 | 2014-12-10 | 南方电网科学研究院有限责任公司 | A kind of electronic type is with many back transmission lines of tower power frequency parameter test instrument |
| CN204631158U (en) * | 2015-05-04 | 2015-09-09 | 山东达顺电子科技有限公司 | Circuit power frequency parameter alien frequencies proving installation |
-
2015
- 2015-05-04 CN CN201510221502.1A patent/CN104777390A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034117A (en) * | 2007-04-02 | 2007-09-12 | 武汉大学 | Power transmission line power frequency parameters measuring method and device |
| CN201886113U (en) * | 2010-12-14 | 2011-06-29 | 四川电力试验研究院 | Pilot-frequency and high-current multifunctional grounding parameter testing system based on variable frequency power supply |
| CN201965178U (en) * | 2010-12-29 | 2011-09-07 | 长沙金艺电子科技有限公司 | Parameter tester for pilot frequency line |
| CN204008885U (en) * | 2014-06-23 | 2014-12-10 | 南方电网科学研究院有限责任公司 | A kind of electronic type is with many back transmission lines of tower power frequency parameter test instrument |
| CN204631158U (en) * | 2015-05-04 | 2015-09-09 | 山东达顺电子科技有限公司 | Circuit power frequency parameter alien frequencies proving installation |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150715 |