CN102955079A - Portable-type high-voltage current transformer transformation-ratio measurement device - Google Patents
Portable-type high-voltage current transformer transformation-ratio measurement device Download PDFInfo
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- CN102955079A CN102955079A CN2012104164980A CN201210416498A CN102955079A CN 102955079 A CN102955079 A CN 102955079A CN 2012104164980 A CN2012104164980 A CN 2012104164980A CN 201210416498 A CN201210416498 A CN 201210416498A CN 102955079 A CN102955079 A CN 102955079A
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Abstract
The invention discloses a portable-type high-voltage current transformer transformation-ratio measurement device, which is characterized in that a signal output end of the device is connected to the input end of a primary coil of a tested high-voltage combination transformer, the output end of the coil is connected with a primary ampere meter, the other end of the ampere meter is connected with two resistors R1 and R2 which are connected with each other in parallel through a switch, and the other end of the resistor R1 is connected to a secondary side of a power transformer of the device after being connected with the end of the resistor R2, which is connected with the switch in series; a secondary ampere meter of the device is respectively connected with two groups of secondary coils of the tested high-voltage combination transformer through a terminal to perform the measurement; and the device is reliable in circuit, light and simple in structure and particularly applicable to the construction field and the overhauling field.
Description
Technical field
The present invention relates to a kind of electric power measuring device, relate in particular to a kind of high-tension current inductor no-load voltage ratio measurement mechanism.
Background technology
In electric system, rural power system widespread use 10kV ultra-high-tension power transmission line, high voltage combined transformer is used very general in the 10kV circuit, high voltage combined transformer has two groups of different electric current no-load voltage ratios, be easy in the real work two kinds of electric current no-load voltage ratio tap false wirings, power supply enterprise's economic loss is given in the metering that makes the mistake; How not dismantling high voltage combined transformer at equipment installation, Overhaul site, identify quickly and easily, verify two groups of different electric current no-load voltage ratios of high voltage combined transformer, is to guarantee accurately actual needs of measurent wiring.
The present invention is exactly the actual demand in conjunction with above-mentioned working site, custom-designed a kind of portable high-pressure current transformer ratio measurement mechanism for detection of checking high voltage combined transformer electric current no-load voltage ratio.
Summary of the invention
Order of the present invention is to prevent the measurent wiring mistake, does not dismantle high voltage combined transformer after a kind of power failure is provided, and carries out the portable high-pressure current transformer ratio measurement mechanism of electric current winding no-load voltage ratio identification.
For reaching above-mentioned purpose, technical solution of the present invention is: a kind of portable high-pressure current transformer ratio measurement mechanism, it is mainly by power transformer, reometer, shunt resistance, switch, fuse constitutes, the input of power transformer connects the 220V power supply through fuse, its output is connected to the AP1 end of tested high voltage combined transformer primary winding through lead-out terminal P1, the AP2 end of primary winding connects primary current Table A 1 through the P2 terminal, the other end of reometer A1 through K switch 1 with in parallel after resistance R 1, R2 joins, it is terminal that the other end of resistance R 1 is connected to the secondary output winding of power transformer, resistance R 2 and the secondary output winding end that also is connected to power transformer after K switch 2 is connected; The two ends of reometer A2 join through one group of secondary coil of connection terminal AS1, AS2 and tested high voltage combined transformer.
Apparatus of the present invention profile is rectangular parallelepiped, on its front panel, and parallel installation reometer A1, A2, reometer A2 next door at right angle setting K switch 1, K2 in its back panel bottom, install connection terminal and tubular fuse, and carrying handle is installed on casing top.
Because the circuit of this device is reliable, structure is light, suit especially in construction, Overhaul site, to use.
Description of drawings
Fig. 1 portable high-pressure current transformer ratio measurement mechanism circuit diagram;
In the drawings, 1-power transformer, 2-fuse, 3-high voltage combined transformer;
Fig. 2 portable high-pressure current transformer ratio measurement mechanism profile schematic diagram;
Fig. 3 portable high-pressure current transformer ratio measurement mechanism schematic rear view.
Embodiment
Below in conjunction with accompanying drawing this portable high-pressure current transformer ratio measurement mechanism is described in further detail:
As seen from Figure 1, portable high-pressure current transformer ratio measurement mechanism is mainly by power transformer, reometer, shunt resistance, switch, fuse constitutes, whole elements and the annex of device all are installed in the portable casing, the input of power transformer 1 is connected to the 220V power supply through fuse 2, be output as the safe power frequency supply of 12V, fuse can be selected glass tubular type, its output is connected to the AP1 end of tested high voltage combined transformer 3 primary windings through lead-out terminal P1, the AP2 end of primary winding connects primary current Table A 1 through the P2 terminal, the other end of reometer A1 through K switch 1 with in parallel after resistance R 1, R2 joins, resistance R 1, it is 4.8 ohm measuring resistance that R2 can select resistance, it is terminal that the other end of resistance R 1 is connected to the secondary output winding of power transformer 1, resistance R 2 and the secondary output winding end that also is connected to power transformer 1 after K switch 2 is connected; First group of secondary coil through connection terminal AS1, AS2 and tested high voltage combined transformer of reometer A2 joins; When this device used, plugged, Closing Switch K1 calculated no-load voltage ratio behind reading current Table A 1, the A2 numerical value; Closing Switch K2 again, the double counting no-load voltage ratio is proofreaded.
By Fig. 2, Fig. 3 as seen, the device profile is rectangular parallelepiped, and size: 303 * 225 * 135mm can select the plain metal light sheet to make, on its front panel, parallel installation reometer A1, A2, reometer A2 next door at right angle setting K switch 1, K2 are on its back panel, connection terminal, tubular fuse are installed, in order to be convenient for carrying, on casing top carrying handle is housed, the mounting arrangements size of all parts is take the best as criterion.
The whole selection standard spares of undeclared components and parts in this device take best fit as standard, are not elaborated at this.
Claims (2)
1. portable high-pressure current transformer ratio measurement mechanism, mainly by power transformer, reometer, shunt resistance,
Switch, fuse constitutes, it is characterized in that: the input of described installation's power source transformer (1) connects the 220V power supply through fuse (2), its output is connected to the AP1 end of tested high voltage combined transformer (3) primary winding through lead-out terminal P1, the AP2 end of primary winding connects primary current Table A 1 through the P2 terminal, the other end of reometer A1 through K switch 1 with in parallel after resistance R 1, R2 joins, it is terminal that the other end of resistance R 1 is connected to the secondary output winding of power transformer (1), resistance R 2 and the secondary output winding end that also is connected to power transformer (1) after K switch 2 is connected; The two ends of reometer A2 join through one group of secondary coil of connection terminal AS1, AS2 and tested high voltage combined transformer.
2. portable high-pressure current transformer ratio measurement mechanism according to claim 1, it is characterized in that: described device profile is rectangular parallelepiped, on its front panel, parallel installation reometer A1, A2, reometer A2 next door at right angle setting K switch 1, K2, in its back panel bottom, connection terminal and tubular fuse are installed, carrying handle is installed on casing top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104164980A CN102955079A (en) | 2012-10-27 | 2012-10-27 | Portable-type high-voltage current transformer transformation-ratio measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104164980A CN102955079A (en) | 2012-10-27 | 2012-10-27 | Portable-type high-voltage current transformer transformation-ratio measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102955079A true CN102955079A (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104164980A Pending CN102955079A (en) | 2012-10-27 | 2012-10-27 | Portable-type high-voltage current transformer transformation-ratio measurement device |
Country Status (1)
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| CN (1) | CN102955079A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872919A (en) * | 2018-07-13 | 2018-11-23 | 中国三冶集团有限公司 | A kind of adjustment method of step down side zero sequence current mutual inductor no-load voltage ratio |
| CN109116284A (en) * | 2018-07-06 | 2019-01-01 | 国家电网公司 | Current mutual inductor testing apparatus and method |
| CN113933558A (en) * | 2021-10-13 | 2022-01-14 | 江苏斯菲尔电气股份有限公司 | Instrument capable of automatically identifying specification of current transformer and setting transformation ratio |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116284A (en) * | 2018-07-06 | 2019-01-01 | 国家电网公司 | Current mutual inductor testing apparatus and method |
| CN108872919A (en) * | 2018-07-13 | 2018-11-23 | 中国三冶集团有限公司 | A kind of adjustment method of step down side zero sequence current mutual inductor no-load voltage ratio |
| CN108872919B (en) * | 2018-07-13 | 2021-01-05 | 中国三冶集团有限公司 | Debugging method for transformation ratio of zero-sequence current transformer on low-voltage side of transformer |
| CN113933558A (en) * | 2021-10-13 | 2022-01-14 | 江苏斯菲尔电气股份有限公司 | Instrument capable of automatically identifying specification of current transformer and setting transformation ratio |
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| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: BAODING POWER SUPPLY COMPANY Effective date: 20131127 Owner name: STATE GRID HEBEI ELECTRIC POWER COMPANY BAODING PO Effective date: 20131127 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 071051 BAODING, HEBEI PROVINCE TO: 100761 DONGCHENG, BEIJING |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20131127 Address after: 100761 West Chang'an Avenue, Beijing, No. 86 Applicant after: State Grid Corporation of China Applicant after: State Grid Hebei Electric Power Company Applicant after: Baoding Power Supply Branch Company, State Grid Hebei Electric Power Company Address before: 071051 No. 138 sunny north street, new urban district, Hebei, Baoding Applicant before: Baoding Power Supply Company |
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Application publication date: 20130306 |