CN104634898A - Test method and device for evaluating gas production trend of transformer oil in electric-thermal mixed field - Google Patents
Test method and device for evaluating gas production trend of transformer oil in electric-thermal mixed field Download PDFInfo
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- CN104634898A CN104634898A CN201310552176.3A CN201310552176A CN104634898A CN 104634898 A CN104634898 A CN 104634898A CN 201310552176 A CN201310552176 A CN 201310552176A CN 104634898 A CN104634898 A CN 104634898A
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- 238000010998 test method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000007789 gas Substances 0.000 claims abstract description 75
- 238000009413 insulation Methods 0.000 claims abstract description 34
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 229910052786 argon Inorganic materials 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000007872 degassing Methods 0.000 claims abstract 2
- 238000005485 electric heating Methods 0.000 claims description 16
- 238000004587 chromatography analysis Methods 0.000 claims description 6
- 238000004817 gas chromatography Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000012159 carrier gas Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 239000004809 Teflon Substances 0.000 claims 1
- 229920006362 Teflon® Polymers 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 101150038956 cup-4 gene Proteins 0.000 description 20
- 230000005684 electric field Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
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Abstract
A test method and a device for evaluating the gas production trend of transformer oil in an electric-thermal mixed field belong to the technical field of transformer oil insulation performance evaluation. And cleaning, drying and assembling all parts of the electrode cup. Degassing and dehydrating the transformer oil, and sealing and sampling by using a large-capacity injector; forming a well-assembled electrode cup, connecting the electrode cup body with an air inlet valve through a vacuum system, vacuumizing the electrode cup body, filling a sample, injecting the sample in a large capacity, connecting the sample with an oil inlet valve of the electrode cup, and filling the sample in the electrode cup; placing the electrode cup filled with oil in a constant temperature test box, connecting a high-voltage electrode connecting rod of the electrode cup with a high-voltage power supply through a protective resistor, and connecting a low-voltage electrode cylinder of the electrode cup with a ground wire through a grounding end; the high-pressure argon bottle is connected with the air inlet valve of the electrode cup through a valve; the oil inlet and outlet are connected with a degasser and a gas chromatograph through an oil inlet valve and a three-way valve; setting voltage and power-on time on a high-voltage power supply control box; on the constant temperature test chamber, the temperature and the running time are set, and the test is started.
Description
Technical field
Evaluate test method and the device of transformer oil aerogenesis trend under the present invention relates to electric heating mixing field, belong to transformer oil insulating property assessment technique field.
Background technology
Along with power transmission and transformation system is to high voltage, Large Copacity, low-loss future development, in succession coming into operation of 500kV, 750kV and 1000kV UHV (ultra-high voltage) and extreme high voltage high-power transformer, is proposed higher requirement to the gas generation property index of ultrahigh voltage transformer oil.The aerogenesis of transformer oil refers to that transformer oil chemical change can occur when being in use subject to strong electric stress and thermodynamic activity and produces some characteristic gas and be dissolved in the phenomenon in oil, and this part gas custom is called transformer oil solution gas.Transformer is as the topmost power-supply unit of electric system, and its reliability service degree is directly connected to the safe operation of electric system electrical network.The composition of Gases Dissolved in Transformer Oil and content can reflect the insulation fault of inside transformer effectively, therefore the component monitoring of Gases Dissolved in Transformer Oil has become one of the most general, most important technology in transformer fault on-line monitoring, under electric field and thermal field, study the variation tendency of Gases Dissolved in Transformer Oil composition, the accuracy and reliability improving transformer fault diagnosis is had great significance.
Transformer oil is in equipment runs, and the main impact being subject to temperature and electric field intensity, can produce dissimilar characteristic gas.At present, investigate testing equipment and the method for transformer oil gas generation, mainly contain two classes: a class under electric field ionization, evaluates the performance of transformer oil bubbing, as existing test method GB/T11142, ASTM D2300 and IEC60628 etc.This kind of Method And Principle measures transformer oil after hydrogen is saturated, voltage be 10kV, under oil temperature is 80 DEG C, the test duration is the condition of 60min or 120min, on transformer oil and liquid level, geocorona is subject to the effect of radial electric field, and oil, hydrogen interface cause oil itself absorb or release the tendency of gas because of exoelectrical reaction.This class methods major defect is that the electric field intensity that can bear is low, can not the generation gas problem of transformer oil under high electric field intensity in analogue transformer; Two is because partial high pressure electric field is exposed to more than transformer oil, and transformer oil ionization position occurs and is in liquid-gas interface place, and this phenomenon and transformer oil actual condition are not inconsistent, and there is not liquid-gas interface in power transformer under high-voltage electric field; Three is that sample injection process can not realize vacuum oil, and how many meetings of gas content of oil directly affect the height that starting potential is put in oily office, and then affect the Measurement accuracy of oil dissolved gas content, thus affects the correct judgement of electric field intensity to aerogenesis trend in oil.Another kind of is the generation gas performance evaluating transformer oil under low-heat situation, as ASTM D7150 method, the method is that analogue transformer is at 120 DEG C, under non-faulting state, transformer oil aerogenesis trend, be investigate merely temperature produces characteristic gas trend impact on transformer oil, in conjunction with electric field force, transformer oil do not produced to the combined influence factor of gas.
Summary of the invention
In order to overcome the deficiencies in the prior art, test method and the device of transformer oil aerogenesis trend is evaluated under the invention provides electric heating mixing field, the process producing gas under analogue transformer oil operating condition also accurately can measure analogue experiment installation and the method for characteristic gas contamination, can at the operating condition of experiment lab simulation transformer oil, and different type of electric field and field intensity can be measured, temperature, the content trend of different characteristic gas is produced under the factor effects such as oxygen content, and then obtain the size of the generation gas trend reflecting dissimilar transformer oil, can be used for the optimization of transformer oil properties of product, simultaneously, experimental data can provide technical support for the characteristic gas of research transformer different faults and influence factor, and then realize providing reliable technical support to transformer fault identification and fault diagnosis.
The analogue experiment installation of transformer oil aerogenesis trend is evaluated under electric heating mixing field, power controling box connects high-voltage power supply, high-voltage power supply is connected with the high-field electrode connecting link of pole cup by protective resistance, the low-field electrode cylinder of pole cup is connected with ground wire by earth terminal, high pressure argon gas bottle is connected with the gas admittance valve of pole cup by valve, the inlet valve of pole cup is connected with degasser by T-valve, the gas deviate from enters in chromatographic analysis systems along with carrier gas, oil saver connecting tee valve F, earth terminal connects the housing of high-voltage power supply, connecting electrode cup in constant temperature oven,
The air intake opening place of upper cover connects gas admittance valve, and high-field electrode connecting link is fixedly connected with the centre of upper cover, high-field electrode connecting link screws on successively connection first and to insulate gasket ring, high-field electrode cylinder and the second insulation gasket ring; The bottom of insulation urceolus screws in successively and connects low-field electrode cylinder and insulation set collar; Upper cover screws in and connects in insulation urceolus, and the bottom vertical of high-field electrode connecting link is inserted in insulation set collar, and insulation urceolus screws in and connects on base, and connect inlet valve at the oil-in place of base, earth terminal connects low-field electrode cylinder.
Evaluate a test method for transformer oil aerogenesis trend under electric heating mixing field, comprise the steps:
Step one, first, cleans each parts of pole cup, dry and assembling.Degassed processed is carried out to transformer oil, with Large Copacity syringe sealing sampling.
Step 2, form the pole cup that installs, after being connected with gas admittance valve by vacuum system electrode cup is vacuumized, be full of sample Large Copacity and inject and be connected with pole cup inlet valve, sample is filled pole cup.
Step 3, be positioned in Homothermal Proof Box by the pole cup after oil-filled, the high-field electrode connecting link of pole cup is connected with high-voltage power supply by protective resistance, and the low-field electrode cylinder of pole cup is connected with ground wire by earth terminal; High pressure argon gas bottle is connected with pole cup gas admittance valve by valve; Oil inlet and outlet is connected with gas chromatography with degasser by inlet valve, T-valve.
Step 4, on high-voltage power supply control box, voltage and power-up time are set; On Homothermal Proof Box, set temperature and working time, start test.
Step 5, to arrive after the test period, turn off high-tension electricity, ground connection is discharged, open high pressure argon gas bottle valve, the gas admittance valve of pole cup and delivery valve respectively, by gases at high pressure, the transformer oil after test is injected degasser, the gas deviate from through degasser is automatically injected in gas chromatography, carries out solution gas composition and air content analysis in oil.
The present invention adopts technique scheme in evaluation transformer oil aerogenesis trend, and the insulating property and the transformer fault basis for estimation that are assessment extra-high voltage transformer oil provide favourable technical support.Electric field intensity and temperature when the high-voltage electric field intensity that particularly the present invention relates to and temperature are run close to real transformer.Transformer oil involved in the present invention is detection mode under temperature field and electric field compound action, and its testing result provides technological guidance for optimization transformer oil product quality.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is the device systems structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation of the pole cup of the embodiment of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as Fig. 1, shown in Fig. 2, transformer oil aerogenesis trend test unit is evaluated under electric heating mixing field, power controling box 1 connects high-voltage power supply 2, high-voltage power supply 2 is connected with the high-field electrode connecting link 12 of pole cup 4 by protective resistance 3, the low-field electrode cylinder 14 of pole cup 4 is connected with ground wire by earth terminal 15, high pressure argon gas bottle 6 is connected with the gas admittance valve 18 of pole cup 4 by valve, the inlet valve 17 of pole cup is connected with degasser 7 by T-valve F, the gas deviate from enters in chromatographic analysis systems 8 along with carrier gas, oil saver 9 connecting tee valve F, earth terminal 10 connects the housing of high-voltage power supply 2, connecting electrode cup 4 in constant temperature oven 5.
The air intake opening place of upper cover 11 connects gas admittance valve 18, and high-field electrode connecting link 12 is fixedly connected with the centre of upper cover 11, high-field electrode connecting link 12 screws on successively connection first and to insulate gasket ring 19, high-field electrode cylinder 13 and the second insulation gasket ring 22; The bottom of insulation urceolus 20 screws in successively and connects low-field electrode cylinder 14 and insulation set collar 16; Upper cover 11 screws in and connects in insulation urceolus 20, and the bottom vertical of high-field electrode connecting link 12 is inserted in insulation set collar 16, and insulation urceolus 20 screws in and connects on base 21, and connect inlet valve 17 at the oil-in place of base 21, earth terminal 15 connects low-field electrode cylinder 14.
Embodiment 2: as shown in Figure 1 and Figure 2; evaluate transformer oil aerogenesis trend test unit under electric heating mixing field, comprise power controling box 1, high-voltage power supply 2, protective resistance 3, pole cup 4, constant temperature oven 5, high pressure argon gas bottle 6, degasser 7, chromatographic analysis systems 8, oil saver 9, earth terminal 10 and some valves.Power controling box 1 controls high-voltage power supply 2; high-voltage power supply 2 is also connected with the high-field electrode connecting link 12 of pole cup 4 by protective resistance 3; the low-field electrode cylinder 14 of pole cup is connected with ground wire by earth terminal 15; high pressure argon gas bottle 6 is connected with the gas admittance valve 18 of pole cup 4 by valve; the inlet valve 17 of pole cup is connected with degasser 7 by T-valve F; the gas deviate from enters in chromatographic analysis systems 8 along with carrier gas, and the characteristic gas component concentration carrying out transformer oil dissolving detects and total gas content detection.
Pole cup 4 as described in Figure 2, comprises upper cover 11, high-field electrode connecting link 12, high-field electrode cylinder 13, low-field electrode cylinder 14, earth terminal 15, insulation set collar 16, inlet valve 17, gas admittance valve 18, first insulation gasket ring 19, second insulation gasket ring 22, insulation urceolus 20, base 21.Load onto gas admittance valve 18 at the air intake opening place of upper cover 11, and high-field electrode connecting link 12 is fixed to upper cover 11 centre, high-field electrode connecting link 12 screws on insulation gasket ring 19, high-field electrode cylinder 13 and insulation gasket ring 19 successively; Screw in low-field electrode cylinder 14 and insulation set collar 16 successively from bottom in insulation urceolus 20; The upper cover 11 assembled is screwed in insulation urceolus 20, ensure that the bottom vertical of high-field electrode connecting link 12 is inserted in insulation set collar 16, insulation urceolus 20 is screwed on base 21, finally load onto inlet valve 17 at the oil-in place of base 21.
Embodiment 3: the test method evaluating transformer oil aerogenesis trend under a kind of electric heating mixing field, concrete implementation step:
Step one, first, cleans each parts of pole cup 4, dry and assembling.Degassed processed is carried out at least 300mL25 transformer oil sample, with 250mL syringe sealing sampling.
Step 2, the pole cup 4 that composition is installed, carry out vacuumizing and vacuum leakage test under residual voltage 10mmHg by gas admittance valve 18, the inlet valve 17 of the 250mL syringe with pole cup 4 of having got sample is connected, vacuumizing under state, No. 25 transformer oil sample product suck in pole cup 4, until when vacuum line has oil sample to flow out, stop beam, the gas admittance valve 18 of closed electrode cup 4 and inlet valve 17, pole cup 4 is oil-filled complete.
Step 3, be positioned in Homothermal Proof Box 5 by the pole cup 4 after oil-filled, the high-field electrode connecting link 12 of pole cup 4 is connected with high-voltage power supply 2 by protective resistance 3, and the low-field electrode cylinder 14 of pole cup 4 passes through earth terminal 15 and is connected with ground wire; High pressure argon gas bottle 6 is connected with pole cup 4 gas admittance valve 18 by valve; The inlet valve 17 of pole cup 4 is connected with gas chromatography 8 with degasser 7 by T-valve F.
Step 4, on high-voltage power supply control box 1, power-frequency voltage 20kV or DC voltage 20kV is set and power-up time is 168 hours; On Homothermal Proof Box 5, set temperature is 80 DEG C and working time is 168 hours, starts test.
Step 5, to arrive after the test period, turn off high-tension electricity, ground connection is discharged, open the valve of high pressure argon gas bottle 6, the gas admittance valve 18 of pole cup 4 and inlet valve 17 respectively, by high pressure argon gas, the transformer oil after test is injected degasser 7, the gas deviate from detects along with carrying out solution gas constituent analysis and air content in oil in high pressure argon gas injection gas chromatography 8 again, and the waste oil that degasser 7 is discharged enters in oil saver 9.
Before and after No. 20 transformer oil tests, oil dissolved gas component and content are in table 1.
Table 120 Gases Dissolved in Transformer Oil component and content
| Pressing time | H 2 | O 2 | N 2 | CO | CO 2 | CH 4 | C 2H 4 | C 2H 6 | C 2H 2 |
| 0h | Do not detect | 18295 | 47121 | Do not detect | 268.4 | Do not detect | Do not detect | Do not detect | Do not detect |
| 2h | 4.7 | 11265 | 37305 | 20.7 | 300.8 | 1.67 | 0.32 | 0.60 | Do not detect |
| 16h | 39.2 | 4242 | 35295 | 141.0 | 1267.2 | 18.98 | 2.06 | 16.62 | Do not detect |
| 168h | 87.9 | 3624 | 37908 | 394.7 | 5890.5 | 77.25 | 11.19 | 84.81 | Do not detect |
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (8)
1. under electric heating mixing field, evaluate transformer oil aerogenesis trend test unit, it is characterized in that power controling box connects high-voltage power supply, high-voltage power supply is connected with the high-field electrode connecting link of pole cup by protective resistance, the low-field electrode cylinder of pole cup is connected with ground wire by earth terminal, high pressure argon gas bottle is connected with the gas admittance valve of pole cup by valve, the inlet valve of pole cup is connected with degasser by T-valve, the gas deviate from enters in chromatographic analysis systems along with carrier gas, oil saver connecting tee valve F, earth terminal connects the housing of high-voltage power supply, connecting electrode cup in constant temperature oven,
The air intake opening place of upper cover connects gas admittance valve, and high-field electrode connecting link is fixedly connected with the centre of upper cover, high-field electrode connecting link screws on successively connection first and to insulate gasket ring, high-field electrode cylinder and the second insulation gasket ring; The bottom of insulation urceolus screws in successively and connects low-field electrode cylinder and insulation set collar; Upper cover screws in and connects in insulation urceolus, and the bottom vertical of high-field electrode connecting link is inserted in insulation set collar, and insulation urceolus screws in and connects on base, and connect inlet valve at the oil-in place of base, earth terminal connects low-field electrode cylinder.
2. evaluate transformer oil aerogenesis trend test unit under electric heating mixing field according to claim 1, it is characterized in that high-voltage power supply is power frequency AC, or direct supply or AC-DC overlaying power.
3. evaluate transformer oil aerogenesis trend test unit under electric heating mixing field according to claim 1, it is characterized in that the material of high-field electrode connecting link, high-tension electricity pole, low-field electrode cylinder and earth terminal is red copper; The material of upper cover, insulation set collar, inlet valve, gas admittance valve, insulation gasket ring, insulation urceolus and base is teflon.
4. evaluate a test method for transformer oil aerogenesis trend under electric heating mixing field, it is characterized in that comprising the steps:
Step one, first, cleans each parts of pole cup, dry and assembling; Degassed processed is carried out to transformer oil, with Large Copacity syringe sealing sampling;
Step 2, form the pole cup that installs, after being connected with gas admittance valve by vacuum system electrode cup is vacuumized, be full of sample Large Copacity syringe and be connected with the inlet valve of pole cup, sample is filled pole cup;
Step 3, be positioned in Homothermal Proof Box by the pole cup after oil-filled, the high-field electrode connecting link of pole cup is connected with high-voltage power supply by protective resistance, and the low-field electrode cylinder of pole cup is connected with ground wire by earth terminal; High pressure argon gas bottle is connected with pole cup gas admittance valve by solenoid valve; Oil-out is connected with gas chromatography with degasser by inlet valve, T-valve;
Step 4, on high-voltage power supply control box, voltage and power-up time are set; On Homothermal Proof Box, device temperature and working time, start test;
Step 5, to arrive after the test period, turn off high-tension electricity, ground connection is discharged, open high pressure argon gas bottle valve, the gas admittance valve of pole cup and delivery valve respectively, by high pressure argon gas, the transformer oil after test is injected degasser, the gas deviate from through degasser is automatically injected in gas chromatography, carries out solution gas composition and air content analysis in oil.
5. under a kind of electric heating mixing field according to claim 4, evaluate the test method of transformer oil aerogenesis trend, it is characterized in that: described high pressure generator can be power frequency testing transformer or high voltage direct current generator having and positive-negative polarity, the function of high-voltage charging time are set.
6. under a kind of electric heating mixing field according to claim 4, evaluate the test method of transformer oil aerogenesis trend, it is characterized in that described pole cup can bear 100kV positive polarity DC voltage along face, and do not occur along sudden strain of a muscle Lip river, face, its electrode is circular cartridge type electrode, maximum oil-filled amount can reach 200mL, the electrode system be made up of high-field electrode and low-field electrode.
7. evaluate transformer oil aerogenesis trend test unit under electric heating mixing field according to claim 4, it is characterized in that vacuum outgas mode adopted by described degasser, its degassing efficiency reaches more than 98%.
8. evaluate the test method of transformer oil aerogenesis trend under a kind of electric heating mixing field according to claim 4, it is characterized in that described chromatographic analysis systems has the function of representative gases composition component and content thereof in measuring transformer oil.
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| CN201310552176.3A CN104634898B (en) | 2013-11-08 | 2013-11-08 | Test method and device for evaluating gas production trend of transformer oil in electric-thermal mixed field |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067977A (en) * | 2015-08-06 | 2015-11-18 | 中石化炼化工程（集团）股份有限公司 | Withstand voltage test method for combined electrode |
| CN105608969A (en) * | 2016-02-24 | 2016-05-25 | 国网山东省电力公司 | Simulation transformer gas relay device and sample gas preparation and acquisition method thereof |
| CN109254233A (en) * | 2018-10-24 | 2019-01-22 | 国网山东省电力公司电力科学研究院 | A kind of transformer electric fault gas simulator |
| CN111024555A (en) * | 2018-10-10 | 2020-04-17 | 中国石油天然气股份有限公司 | Equipment and method for measuring fault characteristic gas diffusion speed of transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067977A (en) * | 2015-08-06 | 2015-11-18 | 中石化炼化工程（集团）股份有限公司 | Withstand voltage test method for combined electrode |
| CN105608969A (en) * | 2016-02-24 | 2016-05-25 | 国网山东省电力公司 | Simulation transformer gas relay device and sample gas preparation and acquisition method thereof |
| CN111024555A (en) * | 2018-10-10 | 2020-04-17 | 中国石油天然气股份有限公司 | Equipment and method for measuring fault characteristic gas diffusion speed of transformer |
| CN111024555B (en) * | 2018-10-10 | 2022-07-05 | 中国石油天然气股份有限公司 | Equipment and method for measuring fault characteristic gas diffusion speed of transformer |
| CN109254233A (en) * | 2018-10-24 | 2019-01-22 | 国网山东省电力公司电力科学研究院 | A kind of transformer electric fault gas simulator |
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| Publication number | Publication date |
|---|---|
| CN104634898B (en) | 2016-10-12 |
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