CN202494726U - High-voltage dielectric loss measuring device used on site - Google Patents
High-voltage dielectric loss measuring device used on site Download PDFInfo
- Publication number
- CN202494726U CN202494726U CN2012200995514U CN201220099551U CN202494726U CN 202494726 U CN202494726 U CN 202494726U CN 2012200995514 U CN2012200995514 U CN 2012200995514U CN 201220099551 U CN201220099551 U CN 201220099551U CN 202494726 U CN202494726 U CN 202494726U
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- China
- Prior art keywords
- dielectric loss
- telefault
- reactor
- high voltage
- voltage dielectric
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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 - Lifetime
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- 239000004593 Epoxy Substances 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 16
- 239000003822 epoxy resin Substances 0.000 abstract 4
- 229920000647 polyepoxide Polymers 0.000 abstract 4
- 238000001802 infusion Methods 0.000 abstract 1
- 238000010187 selection method Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a high-voltage dielectric loss measuring device used on site, which is especially applicable for measuring dielectric loss on site for a high-voltage current transformer under high voltage. The measuring device comprises a power supply part, a measuring part and an adjustable compensation part; an epoxy resin casing is arranged on a base, an adjustable compensation reactor is arranged in the epoxy resin casing, and the adjustable compensation reactor is arranged on the base; three taps of the adjustable compensation reactor are all connected to an inductance coil by wires, the inductance coil is arranged in the epoxy resin casing, and the inductance coil is connected on the base; and the three taps, the head end of the inductance coil and the tail end of the reactor are all arranged on the epoxy resin casing. The high-voltage dielectric loss measuring device provided by the utility model discloses selection criteria and selection methods of a compensation reactor and a standard capacitor, and the reactor with an adjustable epoxy infusion cylinder structure can meet testing requirements of the current transformer on site. The high-voltage dielectric loss measuring device overcomes technical difficulties existed in a traditional testing method that testing devices are too bulky and heavy and has good market application prospect.
Description
Technical field
The utility model relates to a kind of scene and uses the high voltage dielectric loss measurement mechanism, and particularly suitable carries out the dielectric loss measurement under the on-the-spot high voltage to high-tension current inductor.
Background technology
At present, be to adopt heavy HT testing transformer to high pressure (220kV) current mutual inductor on site high voltage dielectric loss test classic method as booster power.When testing at the scene, need transportation and lifting vehicle to get into transformer station, because the restriction of power failure scope, the loading and unloading of testing equipment and in placely all cause very big threat to electric power netting safe running.For this reason, those skilled in the art begin development with portable reactor series compensation method, measure the problem of used high trial voltage (150kV) power supply to solve the current mutual inductor on site high voltage dielectric loss.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of scene to use the high voltage dielectric loss measurement mechanism, and it is a kind of adjustable serial resonance compensation device, and purpose is in order to solve the too huge and heavy technical barrier of traditional experiment method test equipment.
In order to achieve the above object, the utility model is realized through following technical proposals:
The high voltage dielectric loss measurement mechanism is used at the scene, comprises power unit, measure portion and adjustable compensation part; Epoxy package is located on the base, is provided with in the epoxy package to debug compensation reactor, can debug compensation reactor and be located on the base; Three taps on the adjustable compensation reactor are connected with telefault through lead respectively, and telefault is located in the epoxy package, and telefault is connected on the base; Described three taps, telefault head end and reactor end are installed on the outer wall of epoxy package.
Described telefault and epoxy package have certain insulation distance.
Described measure portion also comprises standard capacitor; The rated voltage of described standard capacitor is greater than the highest phase voltage of being tried mutual inductor; High voltage dielectric loss for 220 kV and following current transformer is measured; Be its electric capacity 50～100 pF of 150 kV, Jie's damage value is less than 0. 01% standard capacitor.
Described three taps are first tap, second tap and the 3rd tap; First tap is located at the A1 place, 95% position of telefault length, and second tap is located at the A2 place, 90% position of telefault length, and the 3rd tap is located at the A3 place, 85% position of telefault length.
Described telefault is installed in the epoxy package through insulating support.
Described base is an epoxy mount.
Be provided with iron core in the described adjustable compensation reactor, be iron core formula structure, self-cooled.
The utility model is a kind of adjustable serial resonance compensation device, discloses the choice criteria and the mode of compensation reactor and standard capacitor.Reactor with adjustable epoxy cast column structure can satisfy on-the-spot current transformer test request.According to loop current I
0Confirm the tap of reactor, make its rated current greater than I
0, the voltage of the compensation reactor of the reactance value of reactor, and verification then whether greater than by the maximum amount phasing voltage of examination mutual inductor to meet the demands.In measuring the loop, also need select a station symbol pseudo-capacitance device in the test in addition, the rated voltage of the choice criteria capacitor of standard capacitor must be greater than the highest phase voltage of being tried mutual inductor, its electric capacity 50～100 pF, and Jie's damage value is less than 0. 01%.High voltage dielectric loss for 220 kV and following current transformer is measured, and selects the standard capacitor of 150 kV.Carry out the purpose of high voltage dielectric loss test to reach the scene.
The utility model adjustable compensation reactor partial design is an iron core formula structure, self-cooled.Three taps of reactor are applied in a flexible way, epoxy package have enough electric, physical strengths, necessary heat-sinking capability and with the insulation margin of coil.The reactor insulator foot has enough degree of stability, can bear percussive actions such as transportation, loading and unloading.When the adjustable compensation reactor was used fully, the compensating inductance amount was maximum; When with the 3rd tap 10 the compensating inductance coil hour, the compensating inductance amount is minimum.The utility model solves the too huge and heavy technical barrier of a traditional experiment method test equipment, and its market application foreground is better.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the utility model key wiring diagram;
Fig. 3 is the utility model loop diagram.
Among the figure: epoxy package 1, the first tap 2, the second taps 3, the three taps 4, iron core 5, reactor end 6, base 7.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is explained further details, but the protection domain of the utility model is not limit by embodiment.
The utility model is that the high voltage dielectric loss measurement mechanism is used at a kind of scene, and the utility model comprises the standard capacitor selection of frequency conversion resonance experiment appearance, dielectric loss measurement appearance, adjustable reactor compensation system and measure portion when implementing.
As shown in Figure 1, the utility model is on-the-spot to be provided with three parts altogether with the high voltage dielectric loss measurement mechanism, is respectively experiment power supply part, measure portion and reactor adjustable compensation part.Wherein power unit adopts the existing equipment with mature technology.The epoxy package 1 of adjustable compensation part is located on the base 7, is provided with in the epoxy package 1 and can debugs compensation reactor, can debug compensation reactor and be located on the base 7, can debug and be provided with iron core 5 in the compensation reactor, is iron core formula structure, self-cooled.Three taps on the adjustable compensation reactor are connected with telefault through lead respectively, and telefault is located in the right cylinder epoxy package 1, and telefault is connected on the base 7; And adopt insulating material to be fixed on the base 7 coil, and the winding wire part has certain distance with epoxy package 1, and described three taps, telefault head end and reactor terminal 6 is installed on the outer wall of epoxy package 1.
As shown in Figure 2, described three taps, first tap are located at the A1 place, 95% position of telefault length, and second tap is located at the A2 place, 90% position of telefault length, and the A3 place, 85% position of telefault length is established in the 3rd tap.Confirm employed tap according to the loop current situation, accomplish to regulate the size of reactance value, make trial voltage meet all kinds of rules requirements near power frequency more.
Adjustable compensation reactor part should determine according to the tested device situation.At first, according to the electric capacity C and the trial voltage U that are tried current transformer
CDecision test loop electric current I
0(I
0=ω CU
C), determine rated voltage, rated current and the inductance value of reactor then.The high voltage dielectric loss of mutual inductor refers to the dielectric loss measurement value under the highest phase voltage of equipment, so the rated voltage of reactor must be greater than the highest phase voltage of being tried current transformer, its rated current must be greater than I
0, be complementary putting the reactance value that makes reactor and the capacitive reactance of mutual inductor before this, promptly the reactance value of reactor with by the more approaching compensation of capacitive reactance of examination current transformer, effect is good more, generally requires the former less than the latter 5%.When carrying out the measurement of mutual inductor high voltage dielectric loss, because test frequency and electric capacity all are nonadjustable.So in order to improve compensation effect, reactor should be able to be adjusted flexibly, and be convenient to on-the-spot loading and unloading.Based on this purpose, the reactor that design has adjustable epoxy cast column structure can satisfy on-the-spot current transformer test request.According to loop current I
0Confirm the tap of reactor, make its rated current greater than I
0, the voltage of the compensation reactor of the reactance value of reactor, and verification then whether greater than by the maximum amount phasing voltage of examination mutual inductor to meet the demands.
As shown in Figure 3; In measuring the loop, also need select a station symbol pseudo-capacitance device in the test in addition; The rated voltage of the choice criteria capacitor of standard capacitor must be greater than the highest phase voltage of being tried mutual inductor, its electric capacity 50～100 pF, and Jie's damage value is less than 0. 01%.High voltage dielectric loss for 220 kV and following current transformer is measured, and selects the standard capacitor of 150 kV both economical rationally.
Claims (7)
1. the on-the-spot high voltage dielectric loss measurement mechanism of using; Comprise power unit, measure portion and adjustable compensation part; It is characterized in that: epoxy package (1) is located on the base (7), is provided with in the epoxy package (1) and can debugs compensation reactor, can debug compensation reactor and be located on the base (7); Three taps on the adjustable compensation reactor are connected with telefault through lead respectively, and telefault is located in the epoxy package (1), and telefault is connected on the base (7); Described three taps, telefault head end and reactor terminal (6) are installed on the outer wall of epoxy package (1).
2. the high voltage dielectric loss measurement mechanism is used at scene according to claim 1, it is characterized in that: described telefault and epoxy package (1) have certain insulation distance.
3. the high voltage dielectric loss measurement mechanism is used at scene according to claim 1; It is characterized in that: described measure portion also comprises standard capacitor; The rated voltage of described standard capacitor is greater than the highest phase voltage of being tried mutual inductor; High voltage dielectric loss for 220 kV and following current transformer is measured, and is its electric capacity 50～100 pF of 150 kV, and Jie's damage value is less than 0. 01% standard capacitor.
4. the high voltage dielectric loss measurement mechanism is used at scene according to claim 1, it is characterized in that: described three taps are first tap (2), second tap (3) and the 3rd tap (4); First tap (2) is located at the A1 place, 95% position of telefault length, and second tap (3) is located at the A2 place, 90% position of telefault length, and the 3rd tap (4) is located at the A3 place, 85% position of telefault length.
5. the high voltage dielectric loss measurement mechanism is used at scene according to claim 1, it is characterized in that: described telefault is installed in the epoxy package (1) through insulating support.
6. the high voltage dielectric loss measurement mechanism is used at scene according to claim 1, it is characterized in that: described base (7) is an epoxy mount.
7. the high voltage dielectric loss measurement mechanism is used at scene according to claim 1, it is characterized in that: be provided with iron core (5) in the described adjustable compensation reactor, be iron core formula structure, self-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200995514U CN202494726U (en) | 2012-03-16 | 2012-03-16 | High-voltage dielectric loss measuring device used on site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200995514U CN202494726U (en) | 2012-03-16 | 2012-03-16 | High-voltage dielectric loss measuring device used on site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494726U true CN202494726U (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200995514U Expired - Lifetime CN202494726U (en) | 2012-03-16 | 2012-03-16 | High-voltage dielectric loss measuring device used on site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202494726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608432A (en) * | 2012-03-16 | 2012-07-25 | 辽宁省电力有限公司沈阳供电公司 | Field high-voltage dielectric loss measurement device |
-
2012
- 2012-03-16 CN CN2012200995514U patent/CN202494726U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608432A (en) * | 2012-03-16 | 2012-07-25 | 辽宁省电力有限公司沈阳供电公司 | Field high-voltage dielectric loss measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130207 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130207 Address after: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee after: Liaoning Shenyang Electric Power Supply Co., Ltd. Patentee after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee before: Liaoning Shenyang Electric Power Supply Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |