CN104048912A - Ageing testing device and method for insulating paper of power transformer - Google Patents
Ageing testing device and method for insulating paper of power transformer Download PDFInfo
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- CN104048912A CN104048912A CN201410314161.8A CN201410314161A CN104048912A CN 104048912 A CN104048912 A CN 104048912A CN 201410314161 A CN201410314161 A CN 201410314161A CN 104048912 A CN104048912 A CN 104048912A
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Abstract
The invention discloses an ageing testing device for insulating paper of a power transformer. The ageing testing device comprises an oil tank, a heat radiator and a circulating pump, wherein an oil outlet and an oil inlet are formed in the bottom of the oil tank; a circulating channel is formed among the oil tank, the heat radiator and the circulating pump; the oil tank is internally provided with an insulating paper bracket with a cylinder structure; the insulating paper bracket is fixedly arranged in the oil tank through a connection rod; heating temperature control units are uniformly distributed on the surface of the insulating paper bracket; an oil taking opening for sampling is formed in the side face of the oil tank. The ageing testing device and the ageing testing method for the insulating paper of the power transformer have the characteristics of simplicity in operation, capability of simulating the operation state of solid insulation in the transformer, capability of improving the operation temperature of the solid insulation in oil to accelerate ageing, capability of simultaneously determining a mathematic relation between an oil-soluble ageing product (the content of furfuraldehyde in the oil) and an ageing state (the polymerization rate of the insulating paper) of the solid insulation and the like.
Description
Technical field
The present invention relates to a kind of electric power transformer insulated paper ageing test apparatus and method, belong to electric system field of mechanical technique.
Background technology
In power transformer, the measurement of the insulating paper degree of polymerization is the most direct method of assessment solid insulation ageing state at present.But the method has limitation and not easy to operate, and sampling process must have a power failure, drain the oil, and solid insulation system is also had to wound, sampling finishes rear sampling place and also must repair and strengthen.Use electric power transformer insulated paper aging testing method can simulate the running environment of solid insulation in transformer, adopt the mode that improves temperature to accelerate the solid insulation ageing in transformer, reach the effect that makes insulating paper quick aging; Can carry out the mensuration of the ageing state (degree of polymerization of insulating paper) of oil-soluble ageing products (furfural content in oil) and solid insulation simultaneously, by definite mathematical relation between it, assess solid insulation ageing state, simple, convenient and practical.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides a kind of electric power transformer insulated paper ageing test apparatus.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
An electric power transformer insulated paper ageing test apparatus, is characterized in that, comprises fuel tank, heating radiator and ebullator; Described fuel tank bottom is provided with oil-out and oiler;
The oil-out of described fuel tank is connected by pipeline with the entrance of heating radiator, and the outlet of heating radiator is connected with the entrance of ebullator, and circulation delivery side of pump is connected by pipeline with the oiler of fuel tank, between fuel tank, heating radiator, ebullator, forms circulation passage;
Described fuel tank internal is provided with the insulating paper support of cylindrical structure, and described insulating paper support is fixed in fuel tank by connecting link, at insulating paper rack surface, is all distributed with heated for controlling temperature unit.
Described electric power transformer insulated paper ageing test apparatus, is characterized in that: described fuel tank side is provided with the hydraulic fluid port of getting for sampling.
Described electric power transformer insulated paper ageing test apparatus, it is characterized in that: the cylindrical structure that described fuel tank is hollow, described insulating paper support is horizontally set on fuel tank internal for the cylindrical structure that matches with fuel tank, is convenient in transformer oil that insulating paper is all immersed in fuel tank.
As preferred version, described electric power transformer insulated paper ageing test apparatus, is characterized in that: described heated for controlling temperature unit comprises 100 temperature controlling points, and each temperature controlling point all can carry out the temperature control of 0～350 ℃ of different temperature points.
The present invention also provides a kind of electric power transformer insulated paper aging testing method, based on described electric power transformer insulated paper ageing test apparatus, comprises the following steps:
1) fuel tank is oil-filled: in described fuel tank, be filled with a certain amount of new transformer oil, make heated for controlling temperature unit can be fully immersed in transformer oil;
2) insulating paper is fixing: according to the oil of high-power transformer inside, paper ratio, the insulating paper of corresponding weight is wrapped on insulating paper support, covers on the heated for controlling temperature point of required heating simultaneously;
3) Temperature Setting: carry out the Temperature Setting of different temperature points according to testing requirements, amount to 100 points, between 0～350 ℃ of temperature range;
4) carry out heated for controlling temperature: the heated for controlling temperature unit that installs insulating paper is fully immersed in the transformer oil in fuel tank, opens heating simultaneously, open ebullator, the transformer oil of fuel tank internal carries out interior circulation;
5) temperature control: when heating unit temperature reaches after setting value, device enters temperature control state automatically, adopts simulation to improve transformer normal operating temperature and carrys out accelerating solid insulation ag(e)ing;
6) test: when constant temperature time reaches after testing requirements, stop heating, stop circulation, stopping device; Treat that temperature drops to room temperature, from getting hydraulic fluid port sampling, carry out furfurol test, pull down insulating paper and carry out degree of polymerization test;
7) revision test: hot spot and the different constant temperature time of setting different temperatures, varying number repeat step 1)-6), according to the degree of polymerization of furfural content, insulating paper in above test findings-transformer oil, establish the mathematical relation between solid insulation ageing product and solid insulation ageing state.
Beneficial effect: electric power transformer insulated paper ageing test apparatus provided by the invention, solved and insulating paper in transformer in service has been carried out to the problems such as degree of polymerization test sampling in early stage difficulty, substituted original work on the spot loaded down with trivial details, consuming time completely.The electric power transformer insulated paper ageing test apparatus of the present invention can be simulated the running environment of solid insulation in transformer, adopt the mode that improves temperature to accelerate the solid insulation ageing in transformer, reach the effect that makes insulating paper quick aging, there is the features such as simple, convenient and practical.Utilize electric power transformer insulated paper ageing test apparatus to carry out the assessment of transformer solid insulation ageing state, can establish effectively quickly the mathematical relation between solid insulation ageing product and solid insulation ageing state, for the safe operation of grid equipment provides theoretical foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electric power transformer insulated paper ageing test apparatus of the present invention;
In figure: fuel tank 1, heating radiator 2, ebullator 3, oil-out 4, oiler 5, insulating paper support 6, heated for controlling temperature unit 7, get hydraulic fluid port 8.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of electric power transformer insulated paper ageing test apparatus, comprises fuel tank 1, heating radiator 2 and ebullator 3; Described fuel tank bottom is provided with oil-out 4 and oiler 5;
The oil-out 4 of described fuel tank is connected by pipeline with the entrance of heating radiator 2, the outlet of heating radiator 2 is connected with the entrance of ebullator 3, the outlet of ebullator 3 is connected by pipeline with the oiler of fuel tank 5, between fuel tank 1, heating radiator 2, ebullator 3, forms circulation passage;
Described fuel tank internal is provided with the insulating paper support 6 of cylindrical structure, and described insulating paper support is fixed in fuel tank by connecting link, at insulating paper rack surface, is all distributed with heated for controlling temperature unit 7.
Described electric power transformer insulated paper ageing test apparatus, is characterized in that: described fuel tank side is provided with gets hydraulic fluid port 8 for what sample.
Described electric power transformer insulated paper ageing test apparatus, it is characterized in that: described fuel tank 1 is the cylindrical structure of hollow, described insulating paper support 6 is horizontally set on fuel tank internal for the cylindrical structure matching with fuel tank, is convenient in transformer oil that insulating paper is all immersed in fuel tank.
As preferred version, described electric power transformer insulated paper ageing test apparatus, is characterized in that: described heated for controlling temperature unit 7 comprises 100 temperature controlling points, and each temperature controlling point all can carry out the temperature control of 0～350 ℃ of different temperature points.
An electric power transformer insulated paper aging testing method, based on described electric power transformer insulated paper ageing test apparatus, comprises the following steps:
1) fuel tank is oil-filled: in described fuel tank, be filled with a certain amount of new transformer oil, make heated for controlling temperature unit can be fully immersed in transformer oil;
2) insulating paper is fixing: according to the oil of high-power transformer inside, paper ratio, the insulating paper of corresponding weight is wrapped on insulating paper support, covers on the heated for controlling temperature point of required heating simultaneously;
3) Temperature Setting: carry out the Temperature Setting of different temperature points according to testing requirements, amount to 100 points, between 0～350 ℃ of temperature range;
4) carry out heated for controlling temperature: the heated for controlling temperature unit that installs insulating paper is fully immersed in the transformer oil in fuel tank, opens heating simultaneously, open ebullator, the transformer oil of fuel tank internal carries out interior circulation;
5) temperature control: when heating unit temperature reaches after setting value, device enters temperature control state automatically, adopts simulation to improve transformer normal operating temperature and carrys out accelerating solid insulation ag(e)ing;
6) test: when constant temperature time reaches after testing requirements, stop heating, stop circulation, stopping device; Treat that temperature drops to room temperature, from getting hydraulic fluid port sampling, carry out furfurol test, pull down insulating paper and carry out degree of polymerization test;
7) revision test: hot spot and the different constant temperature time of setting different temperatures, varying number repeat step 1)-6), according to the degree of polymerization of furfural content, insulating paper in above test findings-transformer oil, establish the mathematical relation between solid insulation ageing product and solid insulation ageing state.
Oil, paper ratio that electric power transformer insulated paper ageing test apparatus of the present invention and method can be pacified in photograph high-power transformer are completely simulated, and can carry out heating and the temperature control of arbitrfary point and face simultaneously, and scope is at 0～350 ℃, and precision is 1 ℃; That electric power transformer insulated paper ageing test apparatus and method have is simple to operate, can simulate the running status of solid insulation in transformer, can improve the running temperature of solid insulation in oil carrys out accelerated deterioration, can establish the features such as mathematical relation between the ageing state (degree of polymerization of insulating paper) of oil-soluble ageing products (furfural content in oil) and solid insulation simultaneously.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. an electric power transformer insulated paper ageing test apparatus, is characterized in that, comprises fuel tank, heating radiator and ebullator; Described fuel tank bottom is provided with oil-out and oiler;
The oil-out of described fuel tank is connected by pipeline with the entrance of heating radiator, and the outlet of heating radiator is connected with the entrance of ebullator, and circulation delivery side of pump is connected by pipeline with the oiler of fuel tank, between fuel tank, heating radiator, ebullator, forms circulation passage;
Described fuel tank internal is provided with the insulating paper support of cylindrical structure, and described insulating paper support is fixed in fuel tank by connecting link, at insulating paper rack surface, is all distributed with heated for controlling temperature unit.
2. electric power transformer insulated paper ageing test apparatus according to claim 1, is characterized in that: described fuel tank side is provided with the hydraulic fluid port of getting for sampling.
3. electric power transformer insulated paper ageing test apparatus according to claim 1, it is characterized in that: the cylindrical structure that described fuel tank is hollow, described insulating paper support is horizontally set on fuel tank internal for the cylindrical structure that matches with fuel tank, is convenient in transformer oil that insulating paper is all immersed in fuel tank.
4. electric power transformer insulated paper ageing test apparatus according to claim 1, is characterized in that: described heated for controlling temperature unit comprises 100 temperature controlling points, and each temperature controlling point all can carry out the temperature control of 0～350 ℃ of different temperature points.
5. an electric power transformer insulated paper aging testing method, is characterized in that, based on electric power transformer insulated paper ageing test apparatus described in claim 1-4, comprises the following steps:
1) fuel tank is oil-filled: in described fuel tank, be filled with a certain amount of new transformer oil, make heated for controlling temperature unit can be fully immersed in transformer oil;
2) insulating paper is fixing: according to the oil of high-power transformer inside, paper ratio, the insulating paper of corresponding weight is wrapped on insulating paper support, covers on the heated for controlling temperature point of required heating simultaneously;
3) Temperature Setting: carry out the Temperature Setting of different temperature points according to testing requirements, amount to 100 points, between 0～350 ℃ of temperature range;
4) carry out heated for controlling temperature: the heated for controlling temperature unit that installs insulating paper is fully immersed in the transformer oil in fuel tank, opens heating simultaneously, open ebullator, the transformer oil of fuel tank internal carries out interior circulation;
5) temperature control: when heating unit temperature reaches after setting value, device enters temperature control state automatically, adopts simulation to improve transformer normal operating temperature and carrys out accelerating solid insulation ag(e)ing;
6) test: when constant temperature time reaches after testing requirements, stop heating, stop circulation, stopping device; Treat that temperature drops to room temperature, from getting hydraulic fluid port sampling, carry out furfurol test, pull down insulating paper and carry out degree of polymerization test;
7) revision test: hot spot and the different constant temperature time of setting different temperatures, varying number repeat step 1)-6), according to the degree of polymerization of furfural content, insulating paper in above test findings-transformer oil, establish the mathematical relation between solid insulation ageing product and solid insulation ageing state.
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| CN201410314161.8A CN104048912B (en) | 2014-07-04 | 2014-07-04 | Electric power transformer insulated paper ageing test apparatus and method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374687A (en) * | 2014-11-07 | 2015-02-25 | 国家电网公司 | Insulation paper aging test device for power transformer |
| CN104459412A (en) * | 2014-12-17 | 2015-03-25 | 国网上海市电力公司 | Transformer thermal ageing real-time simulation measurement device and application thereof |
| CN104459411A (en) * | 2014-12-17 | 2015-03-25 | 国网上海市电力公司 | Double-cavity transformer thermal ageing real-time simulation measuring device and application thereof |
| 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 |
| CN105259482A (en) * | 2015-10-26 | 2016-01-20 | 西南交通大学 | Traction transformer layered oilpaper insulation dielectric response experiment system |
| CN105403584A (en) * | 2015-10-26 | 2016-03-16 | 西南交通大学 | Thermal ageing experiment apparatus for simulating different oil flow velocity and high and low temperature impact of transformer |
| CN105784977A (en) * | 2016-05-11 | 2016-07-20 | 林光琴 | Insulation paper aging performance judging method of power transformer |
| CN104297648B (en) * | 2014-10-17 | 2017-01-18 | 国网上海市电力公司 | Temperature and flow speed control device used for transformer oil insulation heat ageing test and test method thereof |
| CN107192926A (en) * | 2017-05-15 | 2017-09-22 | 西南交通大学 | A kind of transformer insulated thermal ageing test device under the non-homogeneous loss of winding |
| CN107390064A (en) * | 2017-08-03 | 2017-11-24 | 中国电力科学研究院 | A kind of ageing test apparatus and application method of insulating oil or paper oil insulation |
| CN107643459A (en) * | 2017-11-09 | 2018-01-30 | 广东电网有限责任公司电力科学研究院 | A kind of transformer Oil-Paper Insulation dual temperature thermal aging test device |
| CN110031302A (en) * | 2019-04-19 | 2019-07-19 | 国网四川省电力公司电力科学研究院 | A kind of capacitor BOPP film ageing properties test method |
| CN111948497A (en) * | 2019-05-14 | 2020-11-17 | 广西电网有限责任公司南宁供电局 | Aging test device and method for transformer insulation paper |
| CN113433434A (en) * | 2021-06-24 | 2021-09-24 | 保定麦电智能科技有限公司 | Transformer insulation aging fault simulation and online state quantity sampling system and method |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297648B (en) * | 2014-10-17 | 2017-01-18 | 国网上海市电力公司 | Temperature and flow speed control device used for transformer oil insulation heat ageing test and test method thereof |
| CN104374687A (en) * | 2014-11-07 | 2015-02-25 | 国家电网公司 | Insulation paper aging test device for power transformer |
| CN104459412A (en) * | 2014-12-17 | 2015-03-25 | 国网上海市电力公司 | Transformer thermal ageing real-time simulation measurement device and application thereof |
| CN104459411A (en) * | 2014-12-17 | 2015-03-25 | 国网上海市电力公司 | Double-cavity transformer thermal ageing real-time simulation measuring device and application thereof |
| CN104459412B (en) * | 2014-12-17 | 2018-05-22 | 国网上海市电力公司 | A kind of transformer heat ageing real-time Simulation measuring device and its application |
| 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 |
| CN105403584B (en) * | 2015-10-26 | 2018-05-04 | 西南交通大学 | Analogue transformer difference oil stream speed high/low-temperature impact thermal ageing test device |
| CN105403584A (en) * | 2015-10-26 | 2016-03-16 | 西南交通大学 | Thermal ageing experiment apparatus for simulating different oil flow velocity and high and low temperature impact of transformer |
| CN105259482A (en) * | 2015-10-26 | 2016-01-20 | 西南交通大学 | Traction transformer layered oilpaper insulation dielectric response experiment system |
| CN105784977A (en) * | 2016-05-11 | 2016-07-20 | 林光琴 | Insulation paper aging performance judging method of power transformer |
| CN107192926A (en) * | 2017-05-15 | 2017-09-22 | 西南交通大学 | A kind of transformer insulated thermal ageing test device under the non-homogeneous loss of winding |
| CN107192926B (en) * | 2017-05-15 | 2018-04-13 | 西南交通大学 | A kind of transformer insulated thermal ageing test device under the non-homogeneous loss of winding |
| CN107390064A (en) * | 2017-08-03 | 2017-11-24 | 中国电力科学研究院 | A kind of ageing test apparatus and application method of insulating oil or paper oil insulation |
| CN107643459A (en) * | 2017-11-09 | 2018-01-30 | 广东电网有限责任公司电力科学研究院 | A kind of transformer Oil-Paper Insulation dual temperature thermal aging test device |
| CN107643459B (en) * | 2017-11-09 | 2023-05-12 | 广东电网有限责任公司电力科学研究院 | Dual-temperature thermal aging test device for transformer oil paper insulation system |
| CN110031302A (en) * | 2019-04-19 | 2019-07-19 | 国网四川省电力公司电力科学研究院 | A kind of capacitor BOPP film ageing properties test method |
| CN111948497A (en) * | 2019-05-14 | 2020-11-17 | 广西电网有限责任公司南宁供电局 | Aging test device and method for transformer insulation paper |
| CN113433434A (en) * | 2021-06-24 | 2021-09-24 | 保定麦电智能科技有限公司 | Transformer insulation aging fault simulation and online state quantity sampling system and method |
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