CN201673211U - High-voltage dielectric loss testing apparatus - Google Patents
High-voltage dielectric loss testing apparatus Download PDFInfo
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- CN201673211U CN201673211U CN2010202065633U CN201020206563U CN201673211U CN 201673211 U CN201673211 U CN 201673211U CN 2010202065633 U CN2010202065633 U CN 2010202065633U CN 201020206563 U CN201020206563 U CN 201020206563U CN 201673211 U CN201673211 U CN 201673211U
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- dielectric loss
- loss tester
- tester
- sampling unit
- test
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Abstract
The utility model relates to a high-voltage dielectric loss testing apparatus which comprises a serial harmonic boost control box, an exciting transformer, a reactor, a compensating capacitor, a standard capacitor, a high-voltage sampling unit, a tested object, a dielectric loss tester and other parts, wherein the standard capacitor is connected to the dielectric loss tester and provides a standard signal channel for the dielectric loss tester; the high-voltage sampling unit is connected with the tested object in series, and is also connected with the dielectric loss tester by optical fiber and provides a tested object signal channel for the dielectric loss tester; and the dielectric loss tester converts the signals transmitted from the standard signal channel and the tested object signal channel from analog to digital, processes the digital signals, and finally obtain the testing result. The high-voltage dielectric loss testing apparatus has simpleness in structure, can sample current signals at the high-voltage end of 500 kilovolts, guarantees accurate test of dielectric loss, and has extremely broad application prospect.
Description
[technical field]
The utility model relates to a kind of testing tool, relates in particular to a kind of power equipment to be carried out the instrument of high-pressure medium loss test, and its highest test voltage can be up to 500KV.
[background technology]
For operation conditions and the installation quality of checking power equipment, guarantee that device security normally moves, in commissioning test, preventive trial and the maintenance process of engineering, all need to carry out the test of high-pressure medium loss, so the high-pressure medium loss test is a kind of important measures that guarantee power equipment transportation, installation, repair quality and safe operation.
At present, homemade high voltage dielectric loss tester be owing to can't realize high-pressure side sampling, so, wouldn't carry out the high pressure opposition method and test, and, must possess the test function of positive connection and opposition method simultaneously as qualified dielectric loss tester.
Simultaneously, dielectric loss is a variable relevant with supply frequency, and traditional test method all is to adopt the power frequency increasing apparatus to pressurize, yet along with the building up of extra-high pressure project, the resonance step-up device has the trend that replaces the power frequency increasing apparatus.In order to adapt to this development trend, also need to provide a kind of new pick-up unit.
Therefore, for avoiding above-mentioned technical matters, the necessary more reasonably high-pressure medium loss test instrument of a kind of structure that provides is to overcome described defective of the prior art.
[utility model content]
For addressing the above problem, the purpose of this utility model is to provide a kind of high-pressure medium loss test instrument of novel structure, and its highest detection electric pressure can reach 500KV, can carry out the current signal sampling at the 500KV high-pressure side, and the assurance dielectric loss is tested accurately.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of high-pressure medium loss test instrument, it comprises the humorous control box that boosts of string, driver transformer, reactor, compensation condenser, standard capacitance, high-pressure sampling unit, test specimen and dielectric loss tester, wherein, the humorous control box that boosts of described string, driver transformer, reactor and compensation condenser is connected in series successively and provide a high-voltage power supply that is used to test for test specimen; Described standard capacitance is connected to the dielectric loss tester by a heart yearn, and provides a standard channel signal for the dielectric loss tester; Described high-pressure sampling unit is connected in series with test specimen, and the high-pressure sampling unit is connected with the dielectric loss tester by optical fiber, and provides a test specimen signalling channel for the dielectric loss tester; Described dielectric loss tester carries out analog-digital conversion with the signal that passes on standard channel signal and the test specimen signalling channel, and with the processing of digital signal, finally draws testing result.
High-pressure medium loss test instrument of the present utility model further is set to: described high-pressure sampling unit is integrated with sample circuit, signal modulation circuit and optical fiber and drives and receiving circuit.
High-pressure medium loss test instrument of the present utility model also can be set to: described dielectric loss tester is provided with an optical fiber interface that is used to connect optical fiber.
Compared with prior art, the utlity model has following beneficial effect:
1, UHV (ultra-high voltage).The testing of equipment scope has covered the dielectric loss of the electrical equipment of 500KV (containing 500KV) and following electric pressure.
2,, the positive connection in the UHV (ultra-high voltage) scope and the dielectric loss test of opposition method have been realized fully by adopting optical fiber communication technology.
3, adopt resonance step-up equipment to carry out the dielectric loss test.
4, apparatus integration design.Instrument with all Component Design in a cabinet, compact conformation, wiring is simple, property easy to use significantly improves, and can satisfy the application need of various electric pressures.
[description of drawings]
Fig. 1 is the schematic diagram of high-pressure medium loss test instrument of the present utility model.
[embodiment]
See also shown in Figure 1, the utility model is a high-pressure medium loss test instrument, and it comprises members such as the humorous control box 1 that boosts of string, driver transformer 2, reactor 4, compensation condenser 3, standard capacitance 5, high-pressure sampling unit 6, test specimen 7 and dielectric loss tester 8.Wherein, the humorous control box 1 that boosts of described string, driver transformer 2, reactor 4 and compensation condenser 3 are connected in series successively and have a series resonance boost function, thereby, effectively reduce the power capacity of high-tension unit for test specimen 7 provides a high-voltage power supply that is used to test.Described standard capacitance 5 is connected on the dielectric loss tester 8 by a heart yearn 51, and provides a standard channel signal for dielectric loss tester 8.Described high-pressure sampling unit 6 is inner integrated, and sample circuit, signal modulation circuit and optical fiber drive and receiving circuit, the zero phase difference of realizing sampled signal is sent to dielectric loss tester 8, it is connected in series with test specimen 7, and high-pressure sampling unit 6 is connected with dielectric loss tester 8 by optical fiber 61, and provides a test specimen signalling channel for dielectric loss tester 8.Described dielectric loss tester 8 is provided with an optical fiber interface 81 that is used to connect optical fiber 61, this dielectric loss tester 8 carries out analog-digital conversion with the signal that passes on standard channel signal and the test specimen signalling channel, signal gain control, and with the processing of digital signal, this processing procedure comprises digital filtering and Fourier transform, result with test analysis shows and printing at last, promptly draws testing result.
The principle of work of high-pressure medium loss test instrument of the present utility model is as follows: test specimen 7 is placed on the humorous control box 1 that boosts of string, driver transformer 2, on the high-voltage power supply that reactor 4 and compensation condenser 3 are formed, high-pressure sampling unit 6 obtains the simulating signal of test specimen 7, and be modulated into the series of pulses signal by a kind of " amplitude-time " pulse modulation technique, by optical fiber 61 pulse signal is delivered on the dielectric loss tester 8 then, and the standard signal of standard capacitance 5 is also delivered on the dielectric loss tester 8, dielectric loss tester 8 carries out analog-digital conversion afterwards, and, finally draw testing result with the processing of digital signal.
Above embodiment only is the preferred embodiment of this creation, not in order to limiting this creation, all in this creation spirit and principle within made any modification, be equal to replacement, improvement etc., all should be included within the protection domain of this creation.
Claims (3)
1. high-pressure medium loss test instrument, it is characterized in that: it comprises the humorous control box that boosts of string, driver transformer, reactor, compensation condenser, standard capacitance, high-pressure sampling unit, test specimen and dielectric loss tester, wherein, the humorous control box that boosts of described string, driver transformer, reactor and compensation condenser is connected in series successively and provide a high-voltage power supply that is used to test for test specimen; Described standard capacitance is connected to the dielectric loss tester by a heart yearn, and provides a standard channel signal for the dielectric loss tester; Described high-pressure sampling unit is connected in series with test specimen, and the high-pressure sampling unit is connected with the dielectric loss tester by optical fiber, and provides a test specimen signalling channel for the dielectric loss tester; Described dielectric loss tester carries out analog-digital conversion with the signal that passes on standard channel signal and the test specimen signalling channel, and with the processing of digital signal, finally draws testing result.
2. high-pressure medium loss test instrument as claimed in claim 1 is characterized in that: described high-pressure sampling unit is integrated with sample circuit, signal modulation circuit and optical fiber and drives and receiving circuit.
3. high-pressure medium loss test instrument as claimed in claim 1 is characterized in that: described dielectric loss tester is provided with an optical fiber interface that is used to connect optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202065633U CN201673211U (en) | 2010-05-28 | 2010-05-28 | High-voltage dielectric loss testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202065633U CN201673211U (en) | 2010-05-28 | 2010-05-28 | High-voltage dielectric loss testing apparatus |
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| CN201673211U true CN201673211U (en) | 2010-12-15 |
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| CN2010202065633U Expired - Fee Related CN201673211U (en) | 2010-05-28 | 2010-05-28 | High-voltage dielectric loss testing apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565542A (en) * | 2012-02-10 | 2012-07-11 | 国电南瑞科技股份有限公司 | Capacitive equipment medium loss online monitoring method based on IEC61850-9-2 standard |
| CN103983859A (en) * | 2014-06-03 | 2014-08-13 | 国家电网公司 | Transformer dielectric loss and capacitance on-line measurement device |
| CN104865448A (en) * | 2015-04-27 | 2015-08-26 | 国家电网公司 | A method for carrying out dielectric loss and capacitance measurement on a transformer without detaching incoming cables |
| CN104914318A (en) * | 2015-06-01 | 2015-09-16 | 苏州市华安普电力工程有限公司 | Variable frequency dielectric loss tester |
| CN109799370A (en) * | 2019-02-14 | 2019-05-24 | 国网山东省电力公司青州市供电公司 | A kind of medium loss test bracket |
-
2010
- 2010-05-28 CN CN2010202065633U patent/CN201673211U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565542A (en) * | 2012-02-10 | 2012-07-11 | 国电南瑞科技股份有限公司 | Capacitive equipment medium loss online monitoring method based on IEC61850-9-2 standard |
| CN102565542B (en) * | 2012-02-10 | 2014-12-10 | 国电南瑞科技股份有限公司 | Capacitive equipment medium loss online monitoring method based on IEC61850-9-2 standard |
| CN103983859A (en) * | 2014-06-03 | 2014-08-13 | 国家电网公司 | Transformer dielectric loss and capacitance on-line measurement device |
| CN104865448A (en) * | 2015-04-27 | 2015-08-26 | 国家电网公司 | A method for carrying out dielectric loss and capacitance measurement on a transformer without detaching incoming cables |
| CN104914318A (en) * | 2015-06-01 | 2015-09-16 | 苏州市华安普电力工程有限公司 | Variable frequency dielectric loss tester |
| CN109799370A (en) * | 2019-02-14 | 2019-05-24 | 国网山东省电力公司青州市供电公司 | A kind of medium loss test bracket |
| CN109799370B (en) * | 2019-02-14 | 2021-04-06 | 国网山东省电力公司青州市供电公司 | Dielectric loss test support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20130528 |