CN103148965A - Temperature rise characteristic field testing method of thermal simulation device of transformer winding temperature controller - Google Patents
Temperature rise characteristic field testing method of thermal simulation device of transformer winding temperature controller Download PDFInfo
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- CN103148965A CN103148965A CN2013100609602A CN201310060960A CN103148965A CN 103148965 A CN103148965 A CN 103148965A CN 2013100609602 A CN2013100609602 A CN 2013100609602A CN 201310060960 A CN201310060960 A CN 201310060960A CN 103148965 A CN103148965 A CN 103148965A
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Abstract
The invention relates to a temperature rise characteristic field testing method of a thermal simulation device of a transformer winding temperature controller. The method comprises the following steps of: 1) keeping the temperature bulb of the temperature controller and an electric heating element in the thermal simulation device to be normally installed on a transformer, and when the internal temperature of the shut-down transformer drops to be consistent with ambient temperature, reading the indicated temperature value of the temperature controller and recording the temperature value as T1; 2) according to parameters such as the rated load current of the transformer and the transformation ratio of a current transformer, calculating and determining the magnitude of testing heating current Ih and outputting the current to the temperature controller through a constant-current source device; 3) after the indicated temperature value of the temperature controller is stabilized for 45 minutes, reading the indicated temperature value and recording the temperature value as T2; and 4) calculating temperature rise delta T=T2-T1 produced by the thermal simulation device of the temperature controller under the condition of the heating current Ih corresponding to the load current of the transformer which is I, so as to obtain the temperature rise characteristic. The temperature rise characteristic field testing method of the thermal simulation device of the transformer winding temperature controller has the advantages that the problem that the temperature rise characteristic of the thermal simulation device of the temperature controller cannot be tested in the field at present is solved, and the accuracy and the reliability of the measurement of the winding temperature controller in service are guaranteed.
Description
Technical field
The present invention relates to the method for a kind of Winding in Power Transformer temperature controller (hereinafter to be referred as temperature controller) thermal cycle simulation temperature characteristic site test.
Background technology
During the power transformer operation, winding temperature is directly connected to insulating capacity and the life-span of transformer.The Transformer Winding temperature controller is used for measuring and monitoring the winding temperature of transformer, is important measurement and the protection equipment that ensures the transformer safe operation.Temperature controller adopts " thermal simulation " technique device to come the copper oil temperature of measuring transformer poor, and the accuracy of thermal cycle simulation temperature characteristic is directly connected to the accuracy that winding temperature is measured, and its characteristic need to be confirmed by routine test.
Described Transformer Winding temperature controller thermal cycle simulation temperature characteristic refers to: the temperature controller thermal cycle simulation is corresponding heating current I when transformer rated load electric current is I
hThe temperature rise that produces is Δ T=T
2-T
1=K
i* I
h 2* R(K wherein
iBe the coefficient relevant with the transformer Cooling structure), i.e. the temperature characteristic of temperature controller thermal cycle simulation.
The periodic check that has determined most of in-service winding temperature controllers due to the power transformer operation characteristic must carry out at transformer field, but temperature controller thermal cycle simulation temperature characteristic can only be tested in the Special constant temperature oil groove in laboratory at present, this thermostatic oil bath volume, weight are all larger, can't be transported to transformer field and test.And the Portable thermostatic bath that is applied to the verification of scene temperature indicating value is little due to the cell body volume, actuating medium is few, the heating of thermal cycle simulation heating will have a strong impact on the stable of temperature in groove when carrying out temperature rise test, cause test to carry out, thereby also can't be applied to the site test of temperature controller thermal cycle simulation temperature characteristic.Therefore, the winding temperature controller substantially all only carries out verification to the fuel temperature measurement function in regular site test at present, and abandoned fully the temperature characteristic of temperature controller thermal cycle simulation is tested, this operation to temperature controller self and transformer all brings certain potential safety hazard.
Summary of the invention
Technical matters to be solved by this invention, just be to provide a kind of method of Transformer Winding temperature controller thermal cycle simulation temperature characteristic site test, the present invention need not the test that thermostatic oil bath can be completed temperature controller thermal cycle simulation temperature characteristic, has solved the problem that present temperature controller can't be tested for the temperature characteristic of thermal cycle simulation in verification at the scene.
Solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of method of Transformer Winding temperature controller thermal cycle simulation temperature characteristic site test comprises the following steps:
S1 keeps heating normal mounting in temperature controller thermometer bulb and thermal cycle simulation on transformer, stops transport at transformer and reduces to when consistent with environment temperature to its internal temperature, reads temperature controller temperature indicating value, is designated as T
1
S2 calculates and confirmed test heating current I according to parameters such as transformer rated load electric current, current transformer ratios
hSize, and by constant-current source device, electric current is exported to temperature controller.The heating of S3 heating is risen temperature controller temperature indicating value, after temperature controller temperature indicating value is stablized 45 minutes, reads this indicating value, is designated as T
2
Heating current I when S4 temperature controller thermal cycle simulation is I at transformer rated load electric current
hThe temperature rise Δ T=T that produces
2-T
1, the method is actually the inner approximate large-scale constant temperature cell body that is considered as a temperature stabilization of transformer, the temperature characteristic of test temperature controller thermal cycle simulation under the current environmental temperature condition.
The I of step S2
hDefinite method of value is: the first step is that the temperature rise data of this transformer are provided according to transformer manufacturer, drawing the copper oil temperature of this transformer when full load poor (coiling hotspot and oil surface temperature poor) second step is according to Δ T size, verify the given temperature characteristic curve map of winding temperature gage producer, determine to obtain compensation heating current I corresponding to Δ T
h
Beneficial effect: the present invention can can't carry out to temperature controller thermal cycle simulation temperature characteristic the problem of site test at present in the situation that do not increase any other testing equipment solution, guarantee accuracy and reliability that in-service winding temperature controller is measured, thereby play the important leverage effect for the safety of power transformer, reliability service
Description of drawings
Fig. 1 is a kind of temperature rise test calibrating process flow diagram that is applicable to on-the-spot Transformer Winding formula thermometer calibrating that the embodiment of the present invention provides.
Embodiment
For making the present invention easier to understand, the present invention is further elaborated below in conjunction with accompanying drawing, but the embodiment in accompanying drawing does not consist of any limitation of the invention.
As shown in Figure 1, the embodiment of the present invention be applicable to on-the-spot Transformer Winding formula thermometer temperature-raising experimental method process flow diagram, concrete steps of the present invention are as follows:
A, keep temperature controller thermometer bulb and heating normal mounting on transformer, do not apply test current to the temperature controller heating this moment, stops transport at transformer and reduce to when consistent with environment temperature to its internal temperature, reads temperature controller temperature indicating value, is designated as T
1
B, according to parameters such as transformer rated load electric current, current transformer ratios, calculate and confirmed test heating current I
hSize, and by constant-current source device, electric current is exported to temperature controller;
I
hDefinite method of value is: the first step is that the temperature rise data of this transformer are provided according to transformer manufacturer, drawing the copper oil temperature of this transformer when full load poor (coiling hotspot and oil surface temperature poor) second step is according to Δ T size, verify the given temperature characteristic curve map of winding temperature gage producer, determine to obtain compensation heating current I corresponding to Δ T
h
C, heating heating are risen temperature controller temperature indicating value, read temperature controller temperature indicating value after the thermometer indicating value is stablized 45min, are designated as T
2
D, the actual temperature rise Δ T=T of calculating temperature controller thermal cycle simulation under this heat test electric current
2-T
1, complete temperature rise test, also can carry out identical test to other heat test current values according to actual needs, to determine the temperature characteristic of heating under the different heating electric current.
Claims (2)
1. the method for a Transformer Winding temperature controller thermal cycle simulation temperature characteristic site test comprises the following steps:
S1 keeps heating normal mounting in temperature controller thermometer bulb and thermal cycle simulation on transformer, stops transport at transformer and reduces to when consistent with environment temperature to its internal temperature, reads temperature controller temperature indicating value, is designated as T
1
S2 calculates and confirmed test heating current I according to the poor parameter of copper oil temperature of transformer rated load electric current, current transformer ratio, Transformer Winding coil
hSize, and by constant-current source device, electric current is exported to temperature controller;
The heating of S3 heating is risen temperature controller temperature indicating value, after temperature controller temperature indicating value is stablized 45 minutes, reads this indicating value, is designated as T
2
S4 temperature controller thermal cycle simulation is corresponding heating current I when transformer rated load electric current is I
hThe temperature rise that produces
It is the temperature characteristic of temperature controller thermal cycle simulation.
2. the method for Transformer Winding temperature controller thermal cycle simulation temperature characteristic site test according to claim 1, is characterized in that: the I in described step S2
hThe step of value is as follows:
S2-1 draws the copper oil temperature of this transformer when full load poor according to the temperature rise data that transformer manufacturer provides this transformer;
S2-2 verifies the given temperature characteristic curve map of winding temperature gage producer according to Δ T size, determines to obtain compensation heating current I corresponding to Δ T
h
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| CN201310060960.2A CN103148965B (en) | 2013-02-26 | 2013-02-26 | Temperature rise characteristic field testing method of thermal simulation device of transformer winding temperature controller |
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| CN201310060960.2A CN103148965B (en) | 2013-02-26 | 2013-02-26 | Temperature rise characteristic field testing method of thermal simulation device of transformer winding temperature controller |
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| CN103148965A true CN103148965A (en) | 2013-06-12 |
| CN103148965B CN103148965B (en) | 2015-03-18 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501980A (en) * | 2015-01-16 | 2015-04-08 | 成都城电电力工程设计有限公司 | Transformer winding temperature measuring device |
| CN104678980A (en) * | 2013-11-28 | 2015-06-03 | 国网河南省电力公司三门峡供电公司 | Transformer temperature controller inspection instrument |
| CN104766515A (en) * | 2015-03-30 | 2015-07-08 | 西南交通大学 | Experimental device and experimental method for simulating heat production of traction transformer |
| CN104914361A (en) * | 2015-05-22 | 2015-09-16 | 国家电网公司 | Method for distinguishing transformer capacity-reducing designed product |
| CN106840461A (en) * | 2016-07-20 | 2017-06-13 | 国家电网公司 | A kind of transformer reactance device temperature protective device in-situ check and test method |
| CN108051105A (en) * | 2018-01-18 | 2018-05-18 | 广东电网有限责任公司电力科学研究院 | A kind of experimental provision for studying transformer winding Temperature Distribution |
| CN110442118A (en) * | 2019-09-03 | 2019-11-12 | 郑州赛奥电子股份有限公司 | Winding temperature controller calibration equipment and its thermostatic bath system |
| CN111735556A (en) * | 2020-06-24 | 2020-10-02 | 大连世有电力科技有限公司 | Liquid thermal simulation device for transformer temperature controller based on optical fiber temperature measurement principle |
| CN112924786A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Method and device for testing temperature rise characteristic of thermal simulation device of transformer winding temperature controller |
| CN113552863A (en) * | 2021-08-11 | 2021-10-26 | 广西电网有限责任公司电力科学研究院 | Additional temperature rise calibrating device and method for transformer winding temperature controller |
| CN114200910A (en) * | 2021-11-29 | 2022-03-18 | 广西电网有限责任公司电力科学研究院 | Calibrating device and method for transformer winding temperature controller |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678980A (en) * | 2013-11-28 | 2015-06-03 | 国网河南省电力公司三门峡供电公司 | Transformer temperature controller inspection instrument |
| CN104678980B (en) * | 2013-11-28 | 2017-11-07 | 国网河南省电力公司三门峡供电公司 | Transformer temperature controller check meter |
| CN104501980A (en) * | 2015-01-16 | 2015-04-08 | 成都城电电力工程设计有限公司 | Transformer winding temperature measuring device |
| CN104766515A (en) * | 2015-03-30 | 2015-07-08 | 西南交通大学 | Experimental device and experimental method for simulating heat production of traction transformer |
| CN104914361A (en) * | 2015-05-22 | 2015-09-16 | 国家电网公司 | Method for distinguishing transformer capacity-reducing designed product |
| CN104914361B (en) * | 2015-05-22 | 2017-11-17 | 国家电网公司 | A kind of method for differentiating transformer drop and holding deisgn product |
| CN106840461A (en) * | 2016-07-20 | 2017-06-13 | 国家电网公司 | A kind of transformer reactance device temperature protective device in-situ check and test method |
| CN108051105B (en) * | 2018-01-18 | 2023-08-01 | 广东电网有限责任公司电力科学研究院 | Experimental device for researching temperature distribution of transformer winding |
| CN108051105A (en) * | 2018-01-18 | 2018-05-18 | 广东电网有限责任公司电力科学研究院 | A kind of experimental provision for studying transformer winding Temperature Distribution |
| CN110442118A (en) * | 2019-09-03 | 2019-11-12 | 郑州赛奥电子股份有限公司 | Winding temperature controller calibration equipment and its thermostatic bath system |
| CN111735556A (en) * | 2020-06-24 | 2020-10-02 | 大连世有电力科技有限公司 | Liquid thermal simulation device for transformer temperature controller based on optical fiber temperature measurement principle |
| CN112924786A (en) * | 2020-12-30 | 2021-06-08 | 广东电网有限责任公司电力科学研究院 | Method and device for testing temperature rise characteristic of thermal simulation device of transformer winding temperature controller |
| CN112924786B (en) * | 2020-12-30 | 2022-05-03 | 广东电网有限责任公司电力科学研究院 | Method and device for testing temperature rise characteristic of thermal simulation device of transformer winding temperature controller |
| CN113552863A (en) * | 2021-08-11 | 2021-10-26 | 广西电网有限责任公司电力科学研究院 | Additional temperature rise calibrating device and method for transformer winding temperature controller |
| CN113552863B (en) * | 2021-08-11 | 2023-03-14 | 广西电网有限责任公司电力科学研究院 | Additional temperature rise calibrating device and method for transformer winding temperature controller |
| CN114200910A (en) * | 2021-11-29 | 2022-03-18 | 广西电网有限责任公司电力科学研究院 | Calibrating device and method for transformer winding temperature controller |
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Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: 510080 Dongfeng East Road, Guangdong, Guangzhou, water, Kong Kong, No. 8 Patentee before: Electrical Power Research Institute of Guangdong Power Grid Corporation |