CN202013809U - Standard capacitor provided with embedded reverse connecting unit and used for testing high voltage medium loss - Google Patents
Standard capacitor provided with embedded reverse connecting unit and used for testing high voltage medium loss Download PDFInfo
- Publication number
- CN202013809U CN202013809U CN2010206271023U CN201020627102U CN202013809U CN 202013809 U CN202013809 U CN 202013809U CN 2010206271023 U CN2010206271023 U CN 2010206271023U CN 201020627102 U CN201020627102 U CN 201020627102U CN 202013809 U CN202013809 U CN 202013809U
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- CN
- China
- Prior art keywords
- standard capacitor
- reversal connection
- optical fiber
- high voltage
- reverse
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a standard capacitor provided with an embedded a reverse connecting unit and used for testing high voltage medium loss. The standard capacitor comprises an inflatable high voltage standard capacitor and a reverse wire connecting unit; the reverse wire connecting unit comprises a reverse connecting current sampling unit, an optical fiber for transmitting reverse connecting signals and a photoelectric signal output port; the reverse connecting current sampling unit is arranged in an anti-corona cover; the photoelectric signal output port is arranged on a standard capacitor base; and the optical fiber for transmitting reverse connecting signals penetrates through an insulating barrel, one end of the optical fiber for transmitting reverse connecting signals is connected with the reverse connecting current sampling unit, and the other end of the optical fiber for transmitting reverse connecting signals is connected with the photoelectric signal output port. With the adoption of the standard capacitor, the technical problem of field connection of the existing high voltage standard capacitor in a reverse wire connecting test is solved, potential safety hazard can be avoided; and the security and reliability of the field test are greatly improved.
Description
Technical field
The utility model relates to a kind of standard capacitor that is used for the test of high voltage dielectric loss, particularly a kind of built-in standard capacitor in reversal connection unit that is used for the test of high voltage dielectric loss.
Background technology
High voltage standard capacitor serves as " counterweight " in high voltage dielectric loss test macro effect, its capacitance is stable, and dielectric loss is minimum, and the standard that can be used as the dielectric loss tester is used.Usually under doing rated voltage, (during the test of 〉=10kV) dielectric loss,,, satisfy the measurement of non-ground connection test product so can only do positive wiring test because the measuring junction of dielectric loss electric bridge and standard capacitor all is in electronegative potential.But can't satisfy the test of ground connection test product, i.e. the reversal connection thread test.During the reversal connection line, need measure current signal, and current signal isolated through high pressure be sent to low-pressure side dielectric loss electric bridge and measure at high-pressure side.We can be referred to as the reversal connection unit this part functional part.Common way is that the reversal connection unit is installed in the can of a band shielding, need hang over high-pressure side during test, is sent to dielectric loss electric bridge low-pressure side by external optical fiber.This way is tested mesohigh terminated line trouble at the scene, hangs not firmly also to fall easily, and unsafe hidden danger is arranged, and damages that fracture easily of external in addition optical fiber influences the reliability of testing.
The utility model content
Existing deficiency when technical problem to be solved in the utility model is to carry out the reversal connection thread test at existing high voltage standard capacitor and a kind of built-in standard capacitor in reversal connection unit that is used for the test of high voltage dielectric loss is provided.This standard capacitor has reduced field connection with the technology that reversal connection unit and high voltage standard capacitor unite two into one, and has avoided potential safety hazard, owing to adopt built-in fiber, avoids optical fiber to be subjected to the damage of external factor.Fail safe, the reliability of field test have been improved greatly.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of built-in standard capacitor in reversal connection unit that is used for the test of high voltage dielectric loss, comprise a gas-filled type high voltage standard capacitor, this gas-filled type high voltage standard capacitor comprises that a high-pressure side, a standard capacitor base are connected the High-Voltage Insulation bucket of described high-pressure side and standard capacitor base with one, described high-pressure side has an anti-corona cover, described High-Voltage Insulation bucket contains a standard capacitor, described standard capacitor base contains a standard capacitor low pressure measurement end, it is characterized in that described standard capacitor also comprises a reversal connection line unit; Described reversal connection line unit comprises that a reversal connection current sampling unit, reversal connection signal transmit the optical fiber and the photosignal output port of usefulness; Described reversal connection current sampling unit is arranged in the described anti-corona cover, described photosignal output port is arranged on the standard capacitor base, the optical fiber that described reversal connection signal transmits usefulness passes described High-Voltage Insulation bucket, optical fiber one end that the reversal connection signal transmits usefulness connects described reversal connection current sampling unit, and the optical fiber other end that the reversal connection signal transmits usefulness connects described photosignal output port.
The utility model makes full use of the inner space of high-pressure side and insulation bucket under the constant situation of the structure that keeps the primary standard capacitor and function, reversal connection line assembly of elements is combined.When positive wiring is measured, reversal connection line unit can not opened, use as broad as long with common standard capacitor, when the reversal connection line is measured, can open reversal connection line unit power supply, the high voltage side current signal that reversal connection line unit obtains sampling socket from the standard capacitor base after optical fiber is isolated is drawn, and standard capacitor low pressure measurement end and fiber-optic signal output signal are received the dielectric loss electric bridge respectively just can finish measurement.The utility model has solved when existing high voltage standard capacitor carries out the reversal connection thread test needs field connection, has the technical problem of potential safety hazard, has improved fail safe, the reliability of field test greatly.
Description of drawings
Fig. 1 is used for the profile schematic diagram of the built-in standard capacitor in the reversal connection unit of high voltage dielectric loss test for the utility model.
Fig. 2 is an operation principle schematic diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth execution mode of the present utility model.
Referring to Fig. 1 and Fig. 2, a kind of built-in standard capacitor in reversal connection unit that is used for the test of high voltage dielectric loss, comprise gas-filled type high voltage standard capacitor and reversal connection line unit, this gas-filled type high voltage standard capacitor comprises high-pressure side 100, standard capacitor base 200 and is connected high-pressure side 100 and the High-Voltage Insulation bucket 300 of standard capacitor base 200.High-pressure side 100 has an anti-corona cover 110, and High-Voltage Insulation bucket 300 contains a standard capacitor 310, and standard capacitor base 200 contains a standard capacitor low pressure measurement end 210.Reversal connection line unit comprises that a reversal connection current sampling unit 410, reversal connection signal transmit the optical fiber 420 and the photosignal output port 430 of usefulness.
Reversal connection current sampling unit 410 is arranged in the anti-corona cover 110, it comprises a sample resistance 411, amplification filtering circuit 412, photoelectric switching circuit 413, the input of amplification filtering circuit 412 is connected across the two ends of sample resistance 411, and the output of amplification filtering circuit 412 connects the input of photoelectric switching circuit 413.
High-voltage signal is applied to high-pressure side 100 during measurement, the standard loop of one tunnel process standard capacitor, 310 input dielectric loss electric bridges is as standard signal, another road is applied to the high-pressure side of reversal connection test specimen through high-pressure side sample resistance 411, obtain being proportional to the magnitude of voltage of test product electric current at the sample resistance two ends, after 412 processing of amplification filtering circuit, by photoelectric switching circuit 413 electrical signal conversion is become light signal, be sent to optical-electrical converter in the photosignal output port 430 of low-pressure side through the optical fiber isolated high-voltage, again light signal is reduced into the signal of telecommunication, delivers to the dielectric loss bridge measurement.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. one kind is used for the built-in standard capacitor in reversal connection unit that the high voltage dielectric loss is tested, comprise a gas-filled type high voltage standard capacitor, this gas-filled type high voltage standard capacitor comprises that a high-pressure side, a standard capacitor base are connected the High-Voltage Insulation bucket of described high-pressure side and standard capacitor base with one, described high-pressure side has an anti-corona cover, described High-Voltage Insulation bucket contains a standard capacitor, described standard capacitor base contains a standard capacitor low pressure measurement end, it is characterized in that described standard capacitor also comprises a reversal connection line unit; Described reversal connection line unit comprises that a reversal connection current sampling unit, reversal connection signal transmit the optical fiber and the photosignal output port of usefulness; Described reversal connection current sampling unit is arranged in the described anti-corona cover, described photosignal output port is arranged on the standard capacitor base, the optical fiber that described reversal connection signal transmits usefulness passes described High-Voltage Insulation bucket, optical fiber one end that the reversal connection signal transmits usefulness connects described reversal connection current sampling unit, and the optical fiber other end that the reversal connection signal transmits usefulness connects described photosignal output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206271023U CN202013809U (en) | 2010-11-26 | 2010-11-26 | Standard capacitor provided with embedded reverse connecting unit and used for testing high voltage medium loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206271023U CN202013809U (en) | 2010-11-26 | 2010-11-26 | Standard capacitor provided with embedded reverse connecting unit and used for testing high voltage medium loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202013809U true CN202013809U (en) | 2011-10-19 |
Family
ID=44784424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206271023U Expired - Fee Related CN202013809U (en) | 2010-11-26 | 2010-11-26 | Standard capacitor provided with embedded reverse connecting unit and used for testing high voltage medium loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202013809U (en) |
-
2010
- 2010-11-26 CN CN2010206271023U patent/CN202013809U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |