CN204514832U - Substation transformer winding wood properly test system - Google Patents
Substation transformer winding wood properly test system Download PDFInfo
- Publication number
- CN204514832U CN204514832U CN201520134916.6U CN201520134916U CN204514832U CN 204514832 U CN204514832 U CN 204514832U CN 201520134916 U CN201520134916 U CN 201520134916U CN 204514832 U CN204514832 U CN 204514832U
- Authority
- CN
- China
- Prior art keywords
- substation transformer
- transformer winding
- measured
- curve
- temperature
- Prior art date
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 title claims abstract description 133
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 239000002023 wood Substances 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000009826 distribution Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 230000005055 memory storage Effects 0.000 claims abstract description 19
- 238000005070 sampling Methods 0.000 claims description 18
- 239000000523 sample Substances 0.000 claims description 10
- 239000002828 fuel tank Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
A kind of substation transformer winding wood properly test system, comprises heating arrangement, curve obtaining means, memory storage and coalignment.Described heating arrangement connects substation transformer to be measured, is suitable for heating described substation transformer winding to be measured; Described curve obtaining means connects described substation transformer to be measured, is suitable for obtaining the detection curve of direct current resistance with its temperature variation of described substation transformer winding to be measured; Described memory storage is suitable for the typical curve of direct current resistance with its temperature variation of the standard distribution transformer winding storing known winding material; Described coalignment connects described curve obtaining means and described memory storage, is suitable for described detection curve to mate with described typical curve.The substation transformer winding wood properly test system that the utility model provides, by the temperature resistance curve of coupling substation transformer winding, improves the accuracy detecting substation transformer winding material at the scene.
Description
Technical field
The utility model relates to power supply equipment detection technique field, particularly a kind of substation transformer winding wood properly test system.
Background technology
Along with socioeconomic fast development, the power consumption of entire society is increasing, increasing to the demand of controller switching equipment especially substation transformer.But along with raw-material rise in price in recent years, copper cash price significantly rises, and substation transformer production cost is more and more higher, the selling price of substation transformer is but because the constraint in market can not go up by same amplitude.For reducing operating cost, some irresponsible manufacturing enterprises with wire instead of copper wire as substation transformer winding, but not in accordance with standard JB3837-2010 " transformer ' s type product type method for pro-gramming " regulation containing the model of aluminium.Part producing enterprise have employed half aluminum steel or full aluminum steel, or winding be aluminum steel, Secondary Winding is copper cash, or winding be copper cash, Secondary Winding is aluminum steel; Part producing enterprise even uses full aluminum steel instead as a winding and Secondary Winding.This to pretend to be the shoddy behavior of copper cash substation transformer containing the substation transformer of aluminum steel, the loss economically that not only made consumer ignorant of the fact suffer, also bring potential safety hazard to the operation of substation transformer, it is very necessary for thus detecting substation transformer winding material.
Domestic and international at present research is expanded to Transformer Winding wood properly test, and make some progress.In prior art, substation transformer winding material is detected and usually has following several method:
One is carry out destruction sampling to substation transformer winding, carry out metallochemistry analysis, but this destructive test method needs substation transformer stoppage in transit to detect, and thus needs a large amount of manpower of cost and time cost, cannot carry out detecting by platform to substation transformer;
Two is utilize constant voltage DC source to be energized to substation transformer winding, obtain the time m-resistance curve of substation transformer winding, again respectively with copper time m-resistance curve and the time m-resistance curve of aluminium contrast, specifically can application reference number be 200810158124.7, name is called the Chinese invention patent of " conductive wire material test instrument for transformer winding and method of testing thereof ", but when this detection method uses at the scene, accuracy is lower;
Three is utilize ray inspection machine and industrial radiographic film to take pictures to substation transformer winding, X-ray attenuation coefficient-scanning thickness the curve of tested substation transformer winding is contrasted with the X-ray attenuation coefficient-scanning thickness curve of copper and the X-ray attenuation coefficient-scanning thickness curve of aluminium respectively, can application reference number be specifically 201420446206.2, name is called the Chinese utility model patent of " distribution transformer coils material discrimination X ray transillumination inclination K value measuring appliance ", but this detection method not only can produce radiation, affect the health of testing staff, and testing cost is high, be not easy to use at the scene.
Utility model content
To be solved in the utility modelly be that substation transformer winding wood properly test cost is high, Site Detection time accuracy low problem.
For solving the problem, the utility model provides a kind of substation transformer winding wood properly test system, comprises heating arrangement, curve obtaining means, memory storage and coalignment;
Described heating arrangement connects substation transformer to be measured, is suitable for heating described substation transformer winding to be measured;
Described curve obtaining means connects described substation transformer to be measured, is suitable for obtaining the detection curve of direct current resistance with its temperature variation of described substation transformer winding to be measured;
Described memory storage is suitable for the typical curve of direct current resistance with its temperature variation of the standard distribution transformer winding storing known winding material;
Described coalignment connects described curve obtaining means and described memory storage, is suitable for described detection curve to mate with described typical curve.
Optionally, described heating arrangement is alternating-current voltage source.
Optionally, described curve obtaining means comprises temperature detecting module, resistance detection module and curve generation module;
Described temperature detecting module connects described substation transformer to be measured, is suitable for sampling to obtain temperature sampling data to the temperature of described substation transformer winding to be measured;
Substation transformer to be measured described in described resistance detection model calling, is suitable for detecting the direct current resistance of described substation transformer winding to be measured to obtain resistance detection data when the temperature of described temperature detecting module to described substation transformer winding to be measured is sampled;
Described curve generation module connects described temperature detecting module and described resistance detection module, is suitable for detection curve according to described temperature sampling data and described resistance detection data genaration.
Optionally, described temperature detecting module is digital temperature sensor.
Optionally, described temperature detecting module is radio temperature sensor.
Optionally, described substation transformer to be measured is oil-filled transformer, and the probe of described radio temperature sensor immerses in the fuel tank of described oil-filled transformer.
Optionally, described resistance detection module is direct-current resistance tester for transformer.
Optionally, described substation transformer winding wood properly test system also comprises auxiliary parameter pick-up unit;
Described auxiliary parameter pick-up unit connects described coalignment, is suitable for the auxiliary parameter detecting described substation transformer to be measured;
Described memory storage is also suitable for the auxiliary parameter storing described standard distribution transformer;
Described coalignment is also suitable for the auxiliary parameter of described substation transformer to be measured to mate with the auxiliary parameter of described standard distribution transformer.
Compared with prior art, the utility model has the following advantages:
The substation transformer winding wood properly test system that the utility model provides, by being mated by the temperature resistance curve of the temperature resistance curve of substation transformer winding to be measured with the standard distribution transformer winding of known winding material, can judge that whether substation transformer winding material to be measured is identical with standard distribution transformer winding material.Due to coupling is the temperature resistance curve of substation transformer winding, directly the temperature of substation transformer winding is sampled, the direct current resistance of the substation transformer winding obtained is not influenced by ambient temperature, and the substation transformer winding wood properly test system that thus the utility model provides can carry out pin-point accuracy detection at the scene and testing cost is low.
In possibility of the present utility model, adopt digital temperature sensor to treat the temperature being measured piezoelectric transformer winding and sample.Due to digital temperature sensor there is temperature sampling wide ranges, resolution is high, the temperature sampling data thus obtained are more accurate, further increase the accuracy of testing result.
In possibility of the present utility model, adopt radio temperature sensor to treat the temperature being measured piezoelectric transformer winding and sample.Because radio temperature sensor has higher sample frequency, the synchronous acquisition between the temperature of substation transformer winding to be measured and direct current resistance can be realized better, the direct current resistance of the substation transformer winding thus obtained is more accurate with the curve of its temperature variation, further increases the accuracy of testing result.
In possibility of the present utility model, direct-current resistance tester for transformer is adopted to detect the direct current resistance of substation transformer winding to be measured.Because direct-current resistance tester for transformer has, measuring accuracy is high, resistance test wide ranges, resolution are high, and the resistance detection data thus obtained are more accurate, further increase the accuracy of testing result.
In possibility of the present utility model, except the temperature resistance curve of substation transformer winding to be measured is mated with the temperature resistance curve of the standard distribution transformer winding of known winding material, also the auxiliary parameter (capacity, volume, quality and direct current resistance etc.) of substation transformer to be measured is mated with the auxiliary parameter (capacity, volume, quality and direct current resistance etc.) of standard distribution transformer.By the coupling of multiple physical parameter, whether comprehensive descision substation transformer to be measured winding material is identical with standard distribution transformer winding material, further increases the accuracy of testing result.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the substation transformer winding wood properly test system of the utility model embodiment;
Fig. 2 is the structural representation of the curve obtaining means of the utility model embodiment;
Fig. 3 is the another kind of structural representation of the substation transformer winding wood properly test system of the utility model embodiment.
Embodiment
Just as described in the background art, application number is 200810158124.7, name is called that the Chinese utility model patent of " conductive wire material test instrument for transformer winding and method of testing thereof " discloses the method being judged substation transformer winding material by the time m-resistance curve of contrast substation transformer winding.Because copper is all not identical with the physical quantity such as temperature coefficient, temperature conductivity, specific heat capacity, conductance, temperature-coefficient of electrical resistance of aluminium, to the substation transformer winding energising same time of unlike material, the direct current resistance of substation transformer winding is different, thus can judge substation transformer winding material by the time m-resistance curve of contrast substation transformer winding.
But, the direct current resistance of substation transformer winding directly affected by the temperature of substation transformer winding, the method contrast be substation transformer winding conduction time-resistance curve, need to ensure that substation transformer to be measured contrasts under identical environment temperature with as comparative standard substation transformer.And substation transformer works in open environment usually, accuracy when thus adopting the method to carry out Site Detection is lower, easily causes error detection.Based on this, technical solutions of the utility model provide the substation transformer winding wood properly test system that a kind of testing cost is low, Site Detection accuracy is high.
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.
Fig. 1 is the structural representation of a kind of substation transformer winding wood properly test system that the utility model embodiment provides, and described substation transformer winding wood properly test system comprises heating arrangement 11, curve obtaining means 12, memory storage 13 and coalignment 14.
Particularly, described heating arrangement 11 connects substation transformer to be measured, is suitable for heating described substation transformer winding 10 to be measured.In the utility model embodiment, described heating arrangement 11 is alternating-current voltage source.When described Transformer Winding to be measured is heated, by the secondary winding short circuit of described transformer to be measured, utilize described alternating-current voltage source to apply alternating voltage at the armature winding of described transformer to be measured, the electric current controlling to flow through the secondary winding of described transformer to be measured is rated current.
Described curve obtaining means 12 connects described substation transformer to be measured, is suitable for obtaining the detection curve of direct current resistance with its temperature variation of described substation transformer winding 10 to be measured.The utility model embodiment provides a kind of concrete structure of described curve obtaining means 12, and as shown in Figure 2, described curve obtaining means 12 comprises temperature detecting module 121, resistance detection module 122 and curve generation module 123 to structural representation.
Particularly, after described heating arrangement 11 heats a period of time to described substation transformer winding 10 to be measured, the temperature of described substation transformer winding 10 to be measured reaches stable, and described heating arrangement 11 stops heating, and the temperature of described substation transformer winding 10 to be measured constantly declines.After stopping is heated described substation transformer winding 10 to be measured, described temperature detecting module 121 is suitable for sampling to obtain temperature sampling data to the temperature of described substation transformer winding 10 to be measured.Described temperature detecting module 121 connects described substation transformer to be measured, is namely arranged in described substation transformer to be measured.It should be noted that, carry out sampling to the temperature of described substation transformer winding 10 to be measured can temporally sample at interval, the such as temperature of sampling should be carried out described substation transformer winding 10 to be measured per minute, also can monitor the temperature of described substation transformer winding 10 to be measured always, the temperature fixed value that often declines just is sampled the temperature of described substation transformer winding 10 to be measured, the such as temperature of described substation transformer winding 10 to be measured often declines 0.2 DEG C the temperature of described substation transformer winding 10 to be measured of just sampling, and the utility model is not construed as limiting this.
In the present embodiment, described temperature detecting module 121 can be digital temperature sensor, and digital temperature sensor has temperature sampling wide ranges, feature that resolution is high, and the temperature sampling data thus obtained are more accurate, can improve the accuracy of testing result; Described temperature detecting module 121 can also be radio temperature sensor, radio temperature sensor has higher sample frequency, the synchronous acquisition between the temperature of described substation transformer winding 10 to be measured and direct current resistance can be realized better, the detection curve obtained is more accurate, can improve the accuracy of testing result.If described substation transformer to be measured is dry-type transformer, the probe of described radio temperature sensor can be arranged on described dry-type transformer winding surface; If described substation transformer to be measured is oil-filled transformer, the probe of described radio temperature sensor immerses in the fuel tank of described oil-filled transformer.
When the temperature of described temperature detecting module 121 to described substation transformer winding 10 to be measured is sampled, described resistance detection module 122 be suitable for detect described substation transformer to be measured around 10 direct current resistance to obtain resistance detection data, namely the temperature of described temperature detecting module 121 often pair of described substation transformer winding 10 to be measured is once sampled, described resistance detection module 122 synchronization detect described substation transformer to be measured around 10 direct current resistance.Described resistance detection module 122 connects described substation transformer to be measured, and further, described resistance detection module 122 two probe connects the two ends of described substation transformer winding to be measured respectively.In the present embodiment, described resistance detection module 122 is direct-current resistance tester for transformer, direct-current resistance tester for transformer has the advantages that measuring accuracy is high, resistance test wide ranges, resolution are high, and the resistance detection data thus obtained are more accurate, can improve the accuracy of testing result.
Described curve generation module 123 connects described temperature detecting module 121 and described resistance detection module 122, is suitable for detection curve according to described temperature sampling data and described resistance detection data genaration.Particularly, described curve generation module 123 receives described temperature sampling data and described resistance detection data, is obtained the detection curve of direct current resistance with its temperature variation of described substation transformer winding 10 to be measured by the mode of curve.Those skilled in the art know principle and the concrete grammar of curve, do not repeat them here.
Continue with reference to figure 1, described memory storage 13 is suitable for the typical curve of direct current resistance with its temperature variation of the standard distribution transformer winding storing known winding material.Particularly, according to the difference of the winding material of substation transformer, capacity and the mode of connection, the quantity of described standard distribution transformer is at least one, and correspondingly described typical curve is at least one.The preparation method of described typical curve can be similar with the preparation method of described detection curve, other modes also can be adopted to obtain described typical curve, do not repeat them here.
Described coalignment 14 connects described curve obtaining means 12 and described memory storage 13, is suitable for described detection curve to mate with described typical curve.Particularly, described detection curve mates with at least one typical curve stored in described memory storage 13 by described coalignment 14 successively, if described detection curve is identical with the current typical curve matched, then the winding material of the standard distribution transformer that the material of described substation transformer winding 10 to be measured is corresponding with the current typical curve matched is identical; If described detection curve is not identical with the current typical curve matched, described detection curve mates with another typical curve by described coalignment 14.How those skilled in the art mates two curves if knowing, do not repeat them here.It should be noted that, if described typical curve is all not identical with all typical curves stored in described memory storage 13, then can judge that the material of described substation transformer winding 10 to be measured is adulterated.
The substation transformer winding wood properly test system that the present embodiment provides, by being mated with the typical curve of the direct current resistance of the standard distribution transformer winding of known winding material with its temperature variation with the detection curve of its temperature variation by the direct current resistance of described substation transformer winding 10 to be measured, can judge that whether described substation transformer winding 10 material to be measured is identical with standard distribution transformer winding material.Due to coupling is the temperature resistance curve of substation transformer winding, directly the temperature of substation transformer winding is sampled, the direct current resistance of the substation transformer winding obtained is not influenced by ambient temperature, and the substation transformer winding wood properly test system that thus the present embodiment provides can carry out pin-point accuracy detection at the scene and testing cost is low.
Fig. 3 is the structural representation of the another kind of substation transformer winding wood properly test system that the utility model embodiment provides, described substation transformer winding wood properly test system is suitable for the material detecting substation transformer winding 30 to be measured, comprises heating arrangement 31, curve obtaining means 32, memory storage 33, coalignment 34 and auxiliary parameter pick-up unit 35.The syndeton of described heating arrangement 31, described curve obtaining means 32, described memory storage 33 and described coalignment 34 and the function device corresponding with Fig. 1 similar, do not repeat them here.
Described auxiliary parameter pick-up unit 35 connects described coalignment 34, be suitable for the auxiliary parameter detecting described substation transformer to be measured, correspondingly, described memory storage 33 is also suitable for the auxiliary parameter of storage standards substation transformer, and described coalignment 34 is also suitable for the auxiliary parameter of described substation transformer to be measured to mate with the auxiliary parameter of described standard distribution transformer.In the present embodiment, described auxiliary parameter comprises capacity, volume, quality and direct current resistance.Compared with the embodiment that Fig. 1 is corresponding, the direct current resistance of described substation transformer winding 30 to be measured not only mates with the detection curve of the direct current resistance of standard distribution transformer winding with its temperature variation with the detection curve of its temperature variation by the present embodiment, also by the capacity of described substation transformer to be measured, volume, quality, direct current resistance respectively with the capacity of standard distribution transformer, volume, quality, direct current resistance mates one by one, only have described detection curve identical with described typical curve and the auxiliary parameter of the auxiliary parameter of described substation transformer to be measured and described standard distribution transformer is also identical time, just described in comprehensive descision, substation transformer winding material to be measured is identical with described standard distribution transformer winding material, further increase the accuracy of testing result.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (8)
1. a substation transformer winding wood properly test system, is characterized in that, comprises heating arrangement, curve obtaining means, memory storage and coalignment;
Described heating arrangement connects substation transformer to be measured, is suitable for heating described substation transformer winding to be measured;
Described curve obtaining means connects described substation transformer to be measured, is suitable for obtaining the detection curve of direct current resistance with its temperature variation of described substation transformer winding to be measured;
Described memory storage is suitable for the typical curve of direct current resistance with its temperature variation of the standard distribution transformer winding storing known winding material;
Described coalignment connects described curve obtaining means and described memory storage, is suitable for described detection curve to mate with described typical curve.
2. substation transformer winding wood properly test system according to claim 1, it is characterized in that, described heating arrangement is alternating-current voltage source.
3. substation transformer winding wood properly test system according to claim 1, it is characterized in that, described curve obtaining means comprises temperature detecting module, resistance detection module and curve generation module;
Described temperature detecting module connects described substation transformer to be measured, is suitable for sampling to obtain temperature sampling data to the temperature of described substation transformer winding to be measured;
Substation transformer to be measured described in described resistance detection model calling, is suitable for detecting the direct current resistance of described substation transformer winding to be measured to obtain resistance detection data when the temperature of described temperature detecting module to described substation transformer winding to be measured is sampled;
Described curve generation module connects described temperature detecting module and described resistance detection module, is suitable for detection curve according to described temperature sampling data and described resistance detection data genaration.
4. substation transformer winding wood properly test system according to claim 3, it is characterized in that, described temperature detecting module is digital temperature sensor.
5. substation transformer winding wood properly test system according to claim 3, it is characterized in that, described temperature detecting module is radio temperature sensor.
6. substation transformer winding wood properly test system according to claim 5, it is characterized in that, described substation transformer to be measured is oil-filled transformer, and the probe of described radio temperature sensor immerses in the fuel tank of described oil-filled transformer.
7. substation transformer winding wood properly test system according to claim 3, it is characterized in that, described resistance detection module is direct-current resistance tester for transformer.
8. substation transformer winding wood properly test system according to claim 1, is characterized in that, also comprise auxiliary parameter pick-up unit;
Described auxiliary parameter pick-up unit connects described coalignment, is suitable for the auxiliary parameter detecting described substation transformer to be measured;
Described memory storage is also suitable for the auxiliary parameter storing described standard distribution transformer;
Described coalignment is also suitable for the auxiliary parameter of described substation transformer to be measured to mate with the auxiliary parameter of described standard distribution transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134916.6U CN204514832U (en) | 2015-03-10 | 2015-03-10 | Substation transformer winding wood properly test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134916.6U CN204514832U (en) | 2015-03-10 | 2015-03-10 | Substation transformer winding wood properly test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204514832U true CN204514832U (en) | 2015-07-29 |
Family
ID=53712792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520134916.6U Active CN204514832U (en) | 2015-03-10 | 2015-03-10 | Substation transformer winding wood properly test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204514832U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677927A (en) * | 2015-03-10 | 2015-06-03 | 国网四川省电力公司电力科学研究院 | Distribution transformer winding material detection system and method |
| CN106353476A (en) * | 2016-09-12 | 2017-01-25 | 国网天津市电力公司 | Signal acquisition device for solving temperature coefficient of resistance of transformer winding material |
| CN106404844A (en) * | 2016-08-26 | 2017-02-15 | 国网山东省电力公司高唐县供电公司 | Transformer winding material identification method |
| CN106443317A (en) * | 2016-10-17 | 2017-02-22 | 国网浙江省电力公司嘉兴供电公司 | Transformer copper-clad aluminum winding detector and detection method |
-
2015
- 2015-03-10 CN CN201520134916.6U patent/CN204514832U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677927A (en) * | 2015-03-10 | 2015-06-03 | 国网四川省电力公司电力科学研究院 | Distribution transformer winding material detection system and method |
| CN104677927B (en) * | 2015-03-10 | 2017-12-01 | 国网四川省电力公司电力科学研究院 | Distribution transformer winding wood properly test system and method |
| CN106404844A (en) * | 2016-08-26 | 2017-02-15 | 国网山东省电力公司高唐县供电公司 | Transformer winding material identification method |
| CN106353476A (en) * | 2016-09-12 | 2017-01-25 | 国网天津市电力公司 | Signal acquisition device for solving temperature coefficient of resistance of transformer winding material |
| CN106353476B (en) * | 2016-09-12 | 2018-06-05 | 国网天津市电力公司 | For solving the signal pickup assembly of transformer winding material temperature-coefficient of electrical resistance |
| CN106443317A (en) * | 2016-10-17 | 2017-02-22 | 国网浙江省电力公司嘉兴供电公司 | Transformer copper-clad aluminum winding detector and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104677927A (en) | Distribution transformer winding material detection system and method | |
| CN204514832U (en) | Substation transformer winding wood properly test system | |
| EP3069424B1 (en) | System and method of tracking the thermal age of a heating cable | |
| CN104764984B (en) | The improved method of transformer oil paper insulation dielectric response Equivalent Circuit Parameter identification | |
| CN103954847A (en) | Testing device for oiled paper compound insulation frequency domain dielectric spectrum and conductivity test | |
| CN107655940B (en) | Transformer winding material detection equipment and system | |
| CN102435852B (en) | Method and device for measuring insulation resistance of metalized film capacitor under high field strength | |
| CN105223329B (en) | Transformer Winding material discrimination method based on pyroelectric effect | |
| CN106053955B (en) | A kind of low frequency sinusoidal motivates the test method of lower Oil-Paper Insulation relative dielectric constant | |
| CN208818818U (en) | A kind of low-power consumption program control type current mutual inductor field detecting device | |
| Cui et al. | Understanding moisture dynamics and its effect on the dielectric response of transformer insulation | |
| CN104344907A (en) | Distribution transformer temperature rise test winding temperature on-line test system and method | |
| CN202486269U (en) | State tester of electrical equipment | |
| CN102520237B (en) | Device and method for measuring digital AC/DC (Alternating Current/Direct Current) current conversion | |
| BR112017015960B1 (en) | Apparatus for checking a parameter of a transformer, system and method for checking a parameter of a transformer | |
| CN103257160A (en) | Method for detecting winding material of three-phase winding device based on thermocouple principle | |
| US20110257924A1 (en) | Self-monitoring and communicating transformer | |
| CN108107313A (en) | The method that unloaded situation judges connection box of electric energy meter correctness | |
| Nussbaumer et al. | Online detection of insulation degradation in inverter fed drive systems based on high frequency current sampling | |
| CN205450244U (en) | Withstand voltage test appearance calibrating installation | |
| Joshi et al. | Dielectric diagnosis of EHV current transformer using frequency domain spectroscopy (FDS) & polarization and depolarization current (PDC) techniques | |
| CN108593714B (en) | Transformer internal moisture measurement system based on dielectric response characteristics of transformer built-in oiled paper insulation sample | |
| CN209264886U (en) | The detection system of quality is electrically connected between a kind of conductor | |
| CN208872809U (en) | The tester of conductor connection point resistance in a kind of measurement power circuit | |
| Kumar et al. | Importance of Depolarization Current in the Diagnosis of Oil-Paper Insulation of Power Transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |