CN203630294U - Electrode cup for measuring partial discharge initial voltage of transformer oil - Google Patents
Electrode cup for measuring partial discharge initial voltage of transformer oil Download PDFInfo
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- CN203630294U CN203630294U CN201320704094.1U CN201320704094U CN203630294U CN 203630294 U CN203630294 U CN 203630294U CN 201320704094 U CN201320704094 U CN 201320704094U CN 203630294 U CN203630294 U CN 203630294U
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- voltage
- field electrode
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- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 239000012212 insulator Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 3
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 3
- 241001330002 Bambuseae Species 0.000 abstract 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 3
- 239000011425 bamboo Substances 0.000 abstract 3
- 238000011156 evaluation Methods 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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Abstract
An electrode cup for measuring partial discharge initial voltage of transformer oil belongs to the technical field of insulation performance evaluation of liquid insulation materials. Insulating base connects the bottom plate, the roof is connected through first big nut and double-screw bolt to the bottom plate, there is the little sealing washer of second between roof and the bottom plate, trapezoidal insulating gasket, high-voltage electrode dish, the little nut of second, the little sealing washer of second, trapezoidal insulating gasket and high-voltage electrode dish are connected to the high-voltage connecting rod, connect high-voltage cap on the roof, high-voltage connecting rod is connected to the inner chamber of high-voltage cap, elastic connection end is connected to the upper end of high-voltage connecting rod, high-voltage cap and elastic connection end are connected to high-voltage wire, there is the low pressure electrode section of thick bamboo between roof and the bottom plate to be connected, first sealing washer is connected to the low pressure electrode section of thick bamboo, the earthing terminal is connected to one side of low pressure electrode section of thick bamboo, the utility model discloses a disc structure is similar with the winding structure of transformer.
Description
Technical field
The utility model relates to a kind of pole cup of measuring for transformer oil partial discharge inception voltage, belongs to the insulating property assessment technique field of liquid insulating material.
Background technology
The height of transformer oil partial discharge inception voltage under current field condition is to affect power equipment (power transformer, reactor and mutual inductor etc.) to manufacture and design and the key factor of safe operation.At present, mainly contain two classes for the method for measuring transformer oil partial discharge inception voltage: a class is to utilize local discharge signal to detect, and has respectively conventional pulse current detection method, ultrahigh-frequency signal detection method and ultrasonic signal detection method; Another kind of is the chromatographic technique method of Gases Dissolved in Transformer Oil.Existing G18/T17648-1998 iknsulating liquid partial discharge inception voltage measures, based on conventional pulse current detection technique, be generally the detection impedance by the coupling condenser in parallel with pole cup, detect the pulse current causing due to shelf depreciation, obtain Apparent discharge magnitude.When the pole cup of employing the method is used for carrying out transformer oil partial discharge inception voltage mensuration, there is following defect: the one, due to pole cup materials limitations, test can only at room temperature be measured, the running temperature of this and transformer oil does not meet, and can not react the partial discharge inception voltage's level under transformer oil actual condition; The 2nd, electrode type is for ball-type electrode, forms severe non-uniform electric field, do not meet with the duty of the ring electric field in transformer, and the 3rd, the poor sealing of pole cup, can not realize vacuum and inject.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of pole cup of measuring for transformer oil partial discharge inception voltage.
A kind of pole cup of measuring for transformer oil partial discharge inception voltage, be applicable to existing G18T17648-1998 iknsulating liquid partial discharge inception voltage determination method, adopt pulse current detection technique, under thermal field and current field condition for the measurement of transformer oil partial discharge inception voltage.
A kind of pole cup of measuring for transformer oil partial discharge inception voltage, insulator foot connecting bottom board, base plate is by first nut and Stud connection top board, between top board and base plate, there is the second small sealing ring, trapezoidal insulation spacer, high-field electrode dish, high pressure connecting link connects the second primary nut, the second small sealing ring, trapezoidal insulation spacer and high-field electrode dish, on top board, connect cavity cap, the inner chamber of cavity cap connects high pressure connecting link, the upper end of high pressure connecting link connects elasticity link, high-voltage conducting wires connects cavity cap and elasticity link, the low-field electrode cylinder that has between top board and base plate is connected, low-field electrode cylinder connects the first O-ring seal, one side of low-field electrode cylinder connects earth terminal, top board has venthole, base plate has oil supply hole, oil supply hole, the other end of venthole is connected in the inner chamber that low-field electrode cylinder surrounds.
Its principle of work is: the transformer oil sample suction injector after degassed dehydration, injector is connected with the oil supply hole of pole cup, and vacuum system is connected with the venthole of pole cup, under vacuum state, transformer oil sample sucks in electrode cup automatically, and is full of whole pole cup.After connection high-voltage power supply and low-voltage grounding wire, can carry out transformer oil and put starting potential test in office.
The utility model compared with prior art, put in starting potential measurement in office, adopts pole cup of the present invention greatly to increase creepage distance, meanwhile, is subject to the transformer oil sample amount under electric field action will be greater than 50%(total amount by transformer oil).The tray type structure of high-field electrode is similar to the winding construction of transformer, and pole cup can hermetically sealed property inject the transformer oil sample after degassed dehydration, thereby reduces gas content and the impact of moisture on test result in oil.Because material in pole cup manufacture all adopts high temperature resistant material, be applicable to measure under high temperature, be consistent with the running temperature of transformer oil, can react the partial discharge inception voltage's level under transformer oil actual condition.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment
Obviously the many modifications and variations that, those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1, a kind of pole cup of measuring for transformer oil partial discharge inception voltage, insulator foot 1 connecting bottom board 3, base plate 3 is connected top board 5 by first nut 2 with double-screw bolt 4, between top board 5 and base plate 3, there is the second small sealing ring 11, trapezoidal insulation spacer 12, high-field electrode dish 13, high pressure connecting link 8 connects the second primary nut 7, the second small sealing ring 11, trapezoidal insulation spacer 12 and high-field electrode dish 13, on top board 5, connect cavity cap 6, the inner chamber of cavity cap 6 connects high pressure connecting link 8, the upper end of high pressure connecting link 8 connects elasticity link 9, high-voltage conducting wires 10 connects cavity cap 6 and elasticity link 9, the low-field electrode cylinder 16 that has between top board 5 and base plate 3 is connected, low-field electrode cylinder 16 connects the first O-ring seal 14, one side of low-field electrode cylinder 16 connects earth terminal 15, top board 5 has venthole 17, base plate 3 has oil supply hole 18, base plate 3 has oil supply hole 18, oil supply hole 18, the other end of venthole 17 is connected in the inner chamber that low-field electrode cylinder 16 surrounds.
Embodiment 2: as shown in Figure 1, a pole cup of measuring for transformer oil partial discharge inception voltage, comprises insulator foot 1, first nut 2, base plate 3, double-screw bolt 4, top board 5, cavity cap 6, the second primary nut 7, high pressure connecting link 8, elasticity link 9, high-voltage conducting wires 10, the second small sealing ring 11, trapezoidal insulation spacer 12, high-field electrode dish 13, the first O-ring seal 14, earth terminal 15, low-field electrode cylinder 16, venthole 17, oil supply hole 18.On cavity cap 6, equipment connects the elasticity link 9 of high-voltage conducting wires 10, the two ends of low-field electrode cylinder 16 put respectively the first O-ring seal 14, hang down and insert in the groove of base plate 1 correspondence in one end of low-field electrode cylinder 16, on the center pit of base plate 1, hang down and insert high pressure connecting link 8, on high pressure connecting link 8, be inserted in successively trapezoidal insulation spacer 12, high-field electrode dish 13, trapezoidal insulation spacer 12 and top board 5, above trapezoidal insulation spacer 12, embed the second small sealing ring 11, top board 5 also inserts the other end of low-field electrode cylinder 16 simultaneously.Screw on the second primary nut 7 at the two ends of high pressure connecting link 8 and screw, loading onto successively six fixed bolts 4 at the periphery of top board 5 and base plate 3, the two ends of each double-screw bolt 4 screw on respectively big nut 7 and screw, and screw in earth terminal 15 on low-field electrode cylinder 16.The electrode cup having formed hangs down and inserts on insulator foot 1, and the cavity cap 6 assembling hangs down on the top board 5 of electrode insertion cup again, guarantees high-pressure elastomeric link 9 and high pressure connecting link 8 close contacts.After being connected with the venthole 17 of pole cup by vacuum system electrode cup being vacuumized, the outlet of sample feeding device is connected with the oil supply hole of pole cup 18, and sample is filled to pole cup; After off-test, Sampler entrance is connected with the oil supply hole 18 of pole cup, and nitrogen is connected with venthole 17, by pressurization, sample is taken out.
As mentioned above, embodiment of the present utility model is explained, but as long as not departing from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection domain of the present utility model.
Claims (1)
1. a pole cup of measuring for transformer oil partial discharge inception voltage, it is characterized in that insulator foot connecting bottom board, base plate is by first nut and Stud connection top board, between top board and base plate, there is the second small sealing ring, trapezoidal insulation spacer, high-field electrode dish, high pressure connecting link connects the second primary nut, the second small sealing ring, trapezoidal insulation spacer and high-field electrode dish, on top board, connect cavity cap, the inner chamber of cavity cap connects high pressure connecting link, the upper end of high pressure connecting link connects elasticity link, high-voltage conducting wires connects cavity cap and elasticity link, the low-field electrode cylinder that has between top board and base plate is connected, low-field electrode cylinder connects the first O-ring seal, one side of low-field electrode cylinder connects earth terminal, top board has venthole, base plate has oil supply hole, base plate has oil supply hole, oil supply hole, the other end of venthole is connected in the inner chamber that low-field electrode cylinder surrounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704094.1U CN203630294U (en) | 2013-11-08 | 2013-11-08 | Electrode cup for measuring partial discharge initial voltage of transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704094.1U CN203630294U (en) | 2013-11-08 | 2013-11-08 | Electrode cup for measuring partial discharge initial voltage of transformer oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630294U true CN203630294U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320704094.1U Expired - Fee Related CN203630294U (en) | 2013-11-08 | 2013-11-08 | Electrode cup for measuring partial discharge initial voltage of transformer oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203630294U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133101B (en) * | 2014-07-14 | 2017-01-04 | 西南交通大学 | A kind of test the experimental provision of transformator oil body electric current under different oil Flow Velocity |
| CN108414904A (en) * | 2018-03-27 | 2018-08-17 | 哈尔滨理工大学 | A kind of electrode assembly in transformer oil paper insulation void defects shelf depreciation research |
| CN109917242A (en) * | 2019-03-19 | 2019-06-21 | 江苏神马电力股份有限公司 | A kind of material electric characteristic test tooling and its application method |
| CN114779027A (en) * | 2022-05-18 | 2022-07-22 | 四川大学 | PDIV testing device and method capable of achieving intelligent temperature rise |
| CN114859196A (en) * | 2022-06-20 | 2022-08-05 | 重庆大学 | Profiling electrode device for testing insulation characteristics of transformer winding end part |
-
2013
- 2013-11-08 CN CN201320704094.1U patent/CN203630294U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133101B (en) * | 2014-07-14 | 2017-01-04 | 西南交通大学 | A kind of test the experimental provision of transformator oil body electric current under different oil Flow Velocity |
| CN108414904A (en) * | 2018-03-27 | 2018-08-17 | 哈尔滨理工大学 | A kind of electrode assembly in transformer oil paper insulation void defects shelf depreciation research |
| CN109917242A (en) * | 2019-03-19 | 2019-06-21 | 江苏神马电力股份有限公司 | A kind of material electric characteristic test tooling and its application method |
| CN114779027A (en) * | 2022-05-18 | 2022-07-22 | 四川大学 | PDIV testing device and method capable of achieving intelligent temperature rise |
| CN114779027B (en) * | 2022-05-18 | 2023-05-12 | 四川大学 | PDIV testing device and method capable of realizing intelligent temperature rise |
| CN114859196A (en) * | 2022-06-20 | 2022-08-05 | 重庆大学 | Profiling electrode device for testing insulation characteristics of transformer winding end part |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20211108 |