CN102867133B - A kind of transformer Cooling efficiency analyzing and processing method - Google Patents
A kind of transformer Cooling efficiency analyzing and processing method Download PDFInfo
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- CN102867133B CN102867133B CN201210410611.4A CN201210410611A CN102867133B CN 102867133 B CN102867133 B CN 102867133B CN 201210410611 A CN201210410611 A CN 201210410611A CN 102867133 B CN102867133 B CN 102867133B
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- transformer
- thermal resistance
- processing method
- cooling efficiency
- temperature
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- 238000001816 cooling Methods 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims abstract description 10
- 238000011156 evaluation Methods 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000007613 environmental effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The present invention relates to a kind of transformer Cooling efficiency analyzing and processing method, the method comprises: the thermal parameters of 1) obtaining transformer; 2) obtain the monitored data of transformer in setting-up time; 3) to step 2) in the data obtained carry out data screening; 4) the middle level oil temperature of calculating transformer; 5) according to the actual thermal resistance of middle level oil temperature and environment temperature calculating transformer; 6) calculate the rate of change of actual thermal resistance with respect to specified thermal resistance, and return to step 2); 7) according to the cooling effectiveness of multiple rates of change evaluation transformers. Compared with prior art, thus that the present invention has is simple and convenient, can carry out exact evaluation to transformer solves the advantages such as fault.
Description
Technical field
The present invention relates to a kind of data processing method of transformer, especially relate to a kind of transformer Cooling efficiency and divideAnalyse processing method.
Background technology
In electric power system, use power transformer, to be end user's consumption transformation, conveying and distribution electric power.Transformer is specified by the operating voltage of high and low side, and has according to carried volt and the size of ampere-capacity. ExampleAs, high-power transformer, for delivery of transformer, along progressively booster tension of supply line, is also used as distribution transformer,Progressively reduce the voltage of dispensing. Conventionally, in order to keep rated capacity, and ensure making of transformer and component parts thereofWith the life-span, the maximum temperature in transformer should remain on lower than 95 DEG C (203. , and exceed 65 DEG C of ambient temperatures F)Temperature. The fault of transformer temperature may cause transformer to destroy, or may make significantly reduce its service life,And because needs are changed the transformer unit damaging, this all may cause industrial cost higher. And, due to temperatureAnd proportional relation between resistance, in the time that the intracardiac copper winding temperature of transformer fe raises, the decrease in efficiency of transformer,Thereby cause to transformer core heat proportional power output (watt) loss. And, in use,The micro-electric current flowing due to the electric current of the conductive winding of flowing through with at magnet steel in-core, the temperature in transformer is tending towards raising.Therefore in transformer, need to arrange cooling device, the cooling effectiveness of transformer has also affected the service condition of transformer.
Summary of the invention
Object of the present invention be exactly provide in order to overcome the defect that above-mentioned prior art exists a kind of simple and convenient,Thereby can carry out to transformer the transformer Cooling efficiency analyzing and processing method of exact evaluation solution fault.
Object of the present invention can be achieved through the following technical solutions:
A kind of transformer Cooling efficiency analyzing and processing method, the method comprises:
1) obtain the thermal parameters of transformer;
2) obtain the monitored data of transformer in setting-up time;
3) to step 2) in the data obtained carry out data screening;
4) the middle level oil temperature of calculating transformer;
5) according to the actual thermal resistance of middle level oil temperature and environment temperature calculating transformer;
6) calculate the rate of change of actual thermal resistance with respect to specified thermal resistance, and return to step 2);
7) according to the cooling effectiveness of multiple rates of change evaluation transformers.
Described thermal parameters comprises transformer body thermal parameters and environmental heat parameter.
Described environmental heat parameter comprises environment temperature, wind speed, wind direction and illumination temperature.
Described setting-up time is 12 hours.
Described step 3) in the condition of data screening comprise:
A) variable quantity of wind speed minimum and wind speed is less than setting value;
B) variable quantity of environment temperature is less than setting value;
C) load is greater than under setting value condition stable continuous time, the period that load factor changes.
Compared with prior art, former thereby the present invention can carry out exact evaluation solution to the cooling effect of transformerBarrier, has advantage simply and easily.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the inventive method.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of transformer Cooling efficiency analyzing and processing method, the method comprises:
1) obtain the thermal parameters of transformer; Described thermal parameters comprises transformer body thermal parameters and environmentThermal parameters, environmental heat parameter comprises environment temperature, wind speed, wind direction and illumination temperature.
2) taking 12 hours as one-period, obtain the monitored data of transformer in 12 hours.
3) to step 2) in the data obtained carry out data screening;
The condition of described data screening comprises:
A) variable quantity of wind speed minimum and wind speed is less than setting value;
B) variable quantity of environment temperature is less than setting value;
C) load is greater than under setting value condition stable continuous time, the period that load factor changes.
C) load is greater than under setting value condition stable continuous time, the period that load factor changes.
4) the middle level oil temperature of calculating transformer.
5) according to the actual thermal resistance of middle level oil temperature and environment temperature calculating transformer.
6) calculate the rate of change of actual thermal resistance with respect to specified thermal resistance, and return to step 2).
7) according to the cooling effectiveness of multiple rates of change evaluation transformers.
By the analyzing and processing of the present embodiment, can from analysis result, know whether transformer exists fault, and andTime solve fault.
Claims (2)
1. a transformer Cooling efficiency analyzing and processing method, is characterized in that, the method comprises:
1) obtain the thermal parameters of transformer, described thermal parameters comprises transformer body thermal parameters and environmentThermal parameters, described environmental heat parameter comprises environment temperature, wind speed, wind direction and illumination temperature;
2) obtain the monitored data of transformer in setting-up time;
3) to step 2) in the data obtained carry out data screening;
4) the middle level oil temperature of calculating transformer;
5) according to the actual thermal resistance of middle level oil temperature and environment temperature calculating transformer;
6) calculate the rate of change of actual thermal resistance with respect to specified thermal resistance, and return to step 2);
7) according to the cooling effectiveness of multiple rates of change evaluation transformers;
Described step 3) in the condition of data screening comprise:
A) variable quantity of wind speed minimum and wind speed is less than setting value;
B) variable quantity of environment temperature is less than setting value;
C) load is greater than under setting value condition stable continuous time, the period that load factor changes.
2. a kind of transformer Cooling efficiency analyzing and processing method according to claim 1, is characterized in that,Described setting-up time is 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410611.4A CN102867133B (en) | 2012-10-24 | 2012-10-24 | A kind of transformer Cooling efficiency analyzing and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410611.4A CN102867133B (en) | 2012-10-24 | 2012-10-24 | A kind of transformer Cooling efficiency analyzing and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102867133A CN102867133A (en) | 2013-01-09 |
| CN102867133B true CN102867133B (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210410611.4A Active CN102867133B (en) | 2012-10-24 | 2012-10-24 | A kind of transformer Cooling efficiency analyzing and processing method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295191B (en) * | 2016-08-12 | 2018-11-30 | 国网河北省电力公司电力科学研究院 | A kind of high-power transformer heat-sinking capability calculates the new method of assessment |
| CN110907731B (en) * | 2019-12-03 | 2022-08-12 | 国网陕西省电力公司电力科学研究院 | Transformer substation thermal state evaluation method and system based on temperature sensing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909349B1 (en) * | 1999-11-17 | 2005-06-21 | Trexco, Llc | Apparatus and method for cooling power transformers |
| CN201820129U (en) * | 2010-08-10 | 2011-05-04 | 西安市双合软件技术有限公司 | Intelligent controller of transformer cooling system |
-
2012
- 2012-10-24 CN CN201210410611.4A patent/CN102867133B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909349B1 (en) * | 1999-11-17 | 2005-06-21 | Trexco, Llc | Apparatus and method for cooling power transformers |
| CN201820129U (en) * | 2010-08-10 | 2011-05-04 | 西安市双合软件技术有限公司 | Intelligent controller of transformer cooling system |
Non-Patent Citations (2)
| Title |
|---|
| 基于修正热路模型的变压器顶层油温及绕组热点温度计算方法;魏本刚等;《华东电力》;20120331;第40卷(第3期);第444-447页 * |
| 基于变压器顶层油温的动态建模;刘辉等;《变压器》;20090930;第39卷(第9期);第5-7页 * |
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| CN102867133A (en) | 2013-01-09 |
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