CN102867133A - Transformer cooling efficiency analyzing processing method - Google Patents
Transformer cooling efficiency analyzing processing method Download PDFInfo
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- CN102867133A CN102867133A CN2012104106114A CN201210410611A CN102867133A CN 102867133 A CN102867133 A CN 102867133A CN 2012104106114 A CN2012104106114 A CN 2012104106114A CN 201210410611 A CN201210410611 A CN 201210410611A CN 102867133 A CN102867133 A CN 102867133A
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Abstract
The invention relates to a transformer cooling efficiency analyzing processing method. The method includes: (1) obtaining thermal parameters of a transformer; (2) obtaining monitoring data of the transformer within set time; (3) conducting data screening on the obtained data in the step (2); (4) calculating middle-layer oil temperature of the transformer; (5) calculating actual thermal resistance of the transformer according to middle-layer oil temperature and environment temperature; (6) calculating change rate of the actual thermal resistance relative to rated thermal resistance, and returning to the step (2); and (7) evaluating cooling efficiency of the transformer according to a plurality of change rates. Compared with the prior art, the transformer cooling efficiency analyzing processing method has the advantages of being simple and convenient and capable of conducting precise evaluation on the transformer so as to eliminate faults and the like.
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 analyzing and processing method.
Background technology
In electric power system, use power transformer, in order to be final 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 the volt of carrying and the size of ampere-capacity.For example, high-power transformer is for delivery of transformer, along supply line's booster tension progressively, also as substation transformer, progressively reduces the voltage of dispensing.Usually, in order to keep rated capacity, and guarantee serviceable life of transformer and component parts thereof, the maximum temperature in the transformer should remain on and be lower than 95 ℃ (203.And surpass the temperature of 65 ℃ of ambient temperatures F).The fault of transformer temperature may cause transformer to destroy, and significantly reduced its serviceable life, and owing to needing to change the transformer unit that damages, this all may cause industrial cost higher.And, because the proportional relation between temperature and the resistance, when the intracardiac copper winding temperature of transformer fe raises, the decrease in efficiency of transformer, thus cause to transformer core heat proportional output power (watt) loss.And in use, owing to the electric current of the conductive winding of flowing through and the little electric current that flows at the magnet steel in-core, the temperature in the transformer is tending towards raising.Therefore need to arrange cooling device in the transformer, the cooling effectiveness of transformer has also affected the operating position of transformer.
Summary of the invention
Thereby purpose of the present invention be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of simple and convenient, can carry out the transformer Cooling efficiency analyzing and processing method that exact evaluation solves fault to transformer.
Purpose 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) obtains the thermal parameters of transformer;
2) obtain the Monitoring Data of transformer in the 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 actual thermal resistance with respect to the rate of change of specified thermal resistance, and return step 2);
7) estimate the cooling effectiveness of transformers according to a plurality of rate of change.
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) condition of data screening comprises in:
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 stable continuous time is greater than under the setting value condition, the period that load factor changes.
Compared with prior art, solve fault thereby the present invention can carry out to the cooling effect of transformer exact evaluation, have simply and easily advantage.
Description of drawings
Fig. 1 is the schematic flow sheet of the inventive method.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of transformer Cooling efficiency analyzing and processing method, the method comprises:
1) obtains the thermal parameters of transformer; Described thermal parameters comprises transformer body thermal parameters and environmental heat parameter, and the environmental heat parameter comprises environment temperature, wind speed, wind direction and illumination temperature.
2) take 12 hours as one-period, obtain the Monitoring 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 stable continuous time is greater than under the setting value condition, the period that load factor changes.
C) load stable continuous time is greater than under the setting value condition, 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 actual thermal resistance with respect to the rate of change of specified thermal resistance, and return step 2).
7) estimate the cooling effectiveness of transformers according to a plurality of rate of change.
By the analyzing and processing of the present embodiment, can know from analysis result whether transformer exists fault, and in time solve fault.
Claims (5)
1. a transformer Cooling efficiency analyzing and processing method is characterized in that, the method comprises:
1) obtains the thermal parameters of transformer;
2) obtain the Monitoring Data of transformer in the 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 actual thermal resistance with respect to the rate of change of specified thermal resistance, and return step 2);
7) estimate the cooling effectiveness of transformers according to a plurality of rate of change.
2. a kind of transformer Cooling efficiency analyzing and processing method according to claim 1 is characterized in that, described thermal parameters comprises transformer body thermal parameters and environmental heat parameter.
3. a kind of transformer Cooling efficiency analyzing and processing method according to claim 2 is characterized in that, described environmental heat parameter comprises environment temperature, wind speed, wind direction and illumination temperature.
4. 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.
5. a kind of transformer Cooling efficiency analyzing and processing method according to claim 1 is characterized in that 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 stable continuous time is greater than under the setting value condition, the period that load factor changes.
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 true CN102867133A (en) | 2013-01-09 |
| CN102867133B CN102867133B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295191A (en) * | 2016-08-12 | 2017-01-04 | 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 |
| CN110907731A (en) * | 2019-12-03 | 2020-03-24 | 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)
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| 刘辉等: "基于变压器顶层油温的动态建模", 《变压器》 * |
| 魏本刚等: "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", 《华东电力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295191A (en) * | 2016-08-12 | 2017-01-04 | 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 |
| 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 |
| CN110907731A (en) * | 2019-12-03 | 2020-03-24 | 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 |
| 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 |
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| CN102867133B (en) | 2016-05-04 |
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