CN101408578B - Transformer oil-paper insulating multi-factor accelerated aging test apparatus and test method - Google Patents

Transformer oil-paper insulating multi-factor accelerated aging test apparatus and test method Download PDF

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CN101408578B
CN101408578B CN 200810233094 CN200810233094A CN101408578B CN 101408578 B CN101408578 B CN 101408578B CN 200810233094 CN200810233094 CN 200810233094 CN 200810233094 A CN200810233094 A CN 200810233094A CN 101408578 B CN101408578 B CN 101408578B
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insulating
paper
oil
transformer
insulation
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CN101408578A (en
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周湶
孙才新
廖瑞金
李剑
杜林�
杨丽君
梁帅伟
陈伟根
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重庆大学
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Abstract

本发明为变压器油纸绝缘老化研究提供一种电-热-机械应力三因子联合老化的试验装置和试验方法;所述试验装置,包括电热老化箱,电热老化箱内设置有变压器油纸绝缘模拟装置、振动装置和用于控制电热老化箱内温度的温度控制装置,所述振动装置能带动变压器油纸绝缘模拟装置振动,变压器油纸绝缘模拟装置与高压电源电连接;所述试验方法包括将绝缘纸真空干燥、真空浸油后贴于试验装置不锈钢箱体内的地电极上,在绝缘纸及地电极外面缠绕线圈作为高压电极,并向不锈钢箱体内注入绝缘油;将高压引线与高压电源接通,并开启振动装置;对绝缘纸、绝缘油间隔取样,测定绝缘老化参数。 The transformer of the present invention to provide an oil-paper insulation aging study electrothermal - Test apparatus and test methods combined three-factor mechanical stress aging; the test apparatus, comprising electric aging tank, the aging tank is provided with an electric paper insulation transformer simulation apparatus, vibration means for controlling the heating temperature and the aging chamber temperature control means, the vibrating means can drive the paper insulation of the transformer vibration simulation apparatus, oil-paper insulation transformer simulation apparatus is electrically connected to the high voltage power supply; the test method comprising the insulating paper was dried in vacuo and vacuum immersion oil on the ground electrode affixed to the stainless steel test apparatus cabinets, outside the ground electrode and insulating paper wound coil is used as the high voltage electrode, and injecting the insulating oil stainless steel cabinets; high-voltage lead to high voltage power supply is turned on, and turn vibration means; paper insulation, insulating oil sampling interval, to measure the insulation aging parameters.

Description

变压器油纸绝缘多因子加速老化试验装置及试验方法 Transformer oil-paper insulating multi-factor accelerated aging test apparatus and test method

技术领域 FIELD

[0001] 本发明涉及变压器零部件检测装置和方法,具体涉及一种变压器油纸绝缘多因子加速老化试验装置及试验方法。 [0001] The present invention relates to apparatus and method for detecting the transformer components, particularly to an oil-paper insulating transformer multifactor test device and test method for accelerated aging.

背景技术 Background technique

[0002] 变压器是电力系统十分关键的大型设备,它的主要故障为由于长期老化而引起的绝缘故障。 [0002] transformer power system is critical to large-scale equipment, its main fault is due to the long aging of insulation fault caused. 而油纸绝缘是油浸式变压器内绝缘的重要组成部分,为了研究和掌握变压器的老化规律,目前常采用加速老化试验的方法进行研究,但现有技术中主要为热应力、电应力或机械应力的单因子老化研究,电、热和机械应力的联合老化研究至今未见报道,而多因子老化的老化规律并非单因子老化的简单叠加,它比单因子老化复杂得多,为了获得准确的试验结果,掌握油纸绝缘的老化规律,需要提供一种电-热-机械应力三因子联合老化的变压器油纸绝缘老化试验装置和方法,但目前,现有技术中还未有上述试验装置和方法。 And paper insulation is an important part of the insulating oil-immersed transformer, in order to study and master transformer aging law, the current method often used accelerated aging test were studied, but the prior art primarily as a thermal stress, electrical or mechanical stress joint aging studies of single factor aging studies, electrical, thermal and mechanical stress has not been reported, but the law of aging multi-factor aging is not the simple sum of the single factor of aging, it is much more complex than single-factor aging, in order to obtain accurate test As a result, aging of oil-paper insulation master, and the need to provide an electrical - thermal - mechanical stress test apparatus and method for combined three-factor aging of oil-paper insulation of the transformer aging, but, the prior art has yet to test apparatus and methods described above.

发明内容 SUMMARY

[0003] 有鉴于此,为了解决上述问题,本发明为变压器油纸绝缘老化研究提供一种电-热-机械应力三因子联合老化的试验装置。 [0003] In view of this, in order to solve the above problems, the present invention is oil-paper insulation aging study to provide an electrical transformer - thermal - mechanical stress test apparatus combined three-factor aging.

[0004] 本发明的目的是这样实现的,变压器油纸绝缘多因子加速老化试验装置,变压器油纸绝缘多因子加速老化试验装置,包括电热老化箱,电热老化箱内设置有变压器油纸绝缘模拟装置、振动装置和用于控制电热老化箱内温度的温度控制装置,所述振动装置能带动变压器油纸绝缘模拟装置振动,变压器油纸绝缘模拟装置与高压电源电连接。 [0004] The object of the present invention is realized, paper insulation transformer multi-factor accelerated aging test apparatus, the transformer oil-paper insulating multi-factor accelerated aging test apparatus, comprising electric aging tank, electric transformers aged oil-paper insulation box is provided with a simulation apparatus, a vibration and means for controlling the temperature of heating the aging chamber temperature control means, the vibrating means can drive the paper insulation of the transformer vibration simulation apparatus, oil-paper insulation transformer simulation apparatus is electrically connected to the high voltage power supply.

[0005] 进一步,所述变压器油纸绝缘模拟装置包括一不锈钢箱,所述不锈钢箱内间隔设置有多组电极,每组电极包括一电极包括地电极和一高压电极,所述不锈钢箱体的上盖为绝缘密封板,绝缘密封板上设置有接线端子,接线端子的输入端与高压电源电连接,高压电极通过高压引线与绝缘密封板上的接线端子输出端连接;所述不锈钢箱体上部设置有与不锈钢箱体内腔连通的三通阀,所述三通阀的另两个端口分别用于连接抽真空设备和充氮气设备;所述地电极与不锈钢箱体电连接,所述不锈钢箱体上还设置有接地端子; [0005] Further, the paper insulation of the transformer comprises a stainless steel tank simulation apparatus, a plurality of sets of stainless steel tank spaced electrodes, each electrode comprising an electrode comprising a high voltage electrode and a ground electrode, the stainless steel housing an insulating cover sealing plate, the sealing plate is provided with an insulating terminal, the input terminal is electrically connected to the high voltage power supply, high-voltage electrode via a high-voltage lead and the insulating seal end plate of the output terminals; upper part of the steel casing is provided a three-way valve communicating with the tank space of the stainless steel, the other two ports of the three-way valves are used to connect devices and filled with nitrogen evacuation apparatus; said ground electrode is electrically connected with the stainless steel casing, the stainless steel housing also provided on the ground terminal;

[0006] 进一步,所述不锈钢箱体底部设有与不锈钢箱体内腔连通的排油阀; [0006] Further, the steel casing is provided with a bottom drain valve in communication with a stainless steel tank space;

[0007] 进一步,所述地电极为硅钢板,硅钢板用于固定绝缘纸,高压电极为缠绕在绝缘纸与硅钢板外的线圈。 [0007] Further, the ground electrode is a silicon steel plate, silicon steel sheet for fixing the insulating sheet, an extremely high voltage insulating paper wound around the outer coil and the silicon steel sheet.

[0008] 本发明还提供一种变压器油纸绝缘多因子加速老化试验方法,包括如下步骤: [0008] The present invention also provides a multi-factor-paper insulation transformer accelerated aging test method, comprising the steps of:

[0009] 1)将绝缘纸真空干燥; [0009] 1) The insulating sheet was dried in vacuo;

[0010] 2)将绝缘纸真空浸油; [0010] 2) The oil-impregnated insulating paper in vacuo;

[0011] 3)将真空浸油后的绝缘纸贴于变压器油纸绝缘多因子加速老化试验装置不锈钢箱体内的地电极上,并在绝缘纸及地电极外缠绕线圈作为高压电极,并向不锈钢箱体内注入绝缘油,绝缘油淹没电极; [0011] 3) The insulating sheet after vacuum transformer oil-impregnated paper insulation affixed to the multi-factor accelerated aging test apparatus on the ground electrode of stainless steel cabinets, and a coil wound around the outer insulation as the high voltage electrode and the ground electrode sheet, and a stainless steel tank body into insulating oil, insulating oil flooded electrode;

[0012] 4)将高压引线与高压电源接通,并开启振动装置;[0013] 5)对绝缘纸、绝缘油间隔取样,测定绝缘老化参数。 [0012] 4) The high voltage power supply is turned on with high-voltage lead, and vibrating means opening; [0013] 5) on the insulating paper, an insulating oil sample interval, to measure the insulation aging parameters.

[0014] 进一步,所述步骤1)中,将绝缘纸在温度80-10(TC、真空度40-601¾条件下,真空干燥48小时; [0014] Further, in the step 1), the insulation sheet at a temperature of 80-10 (TC, 40-601¾ vacuum degree condition, and dried 48 hours in vacuo;

[0015] 进一步,所述步骤2~)中,将绝缘纸在温度30-50 °C、真空度40_60Pa条件下,真空浸油24小时; [0015] Further, the step 2 ~), the insulating paper at a temperature of 30-50 ° C, vacuum degree 40_60Pa conditions, oil-soaked 24 hours in vacuo;

[0016] 进一步,所述绝缘油采用25#变压器油; [0016] Further, the use of insulating oil transformer oil # 25;

[0017] 进一步,所述步骤4)中,所述高压电源提供IlkV交流电压,所述振动装置振动频率为40-60Hz ; [0017] Further, the step 4), the high voltage power supply provides an AC voltage IlkV, the vibration frequency of the vibration device 40-60Hz;

[0018] 进一步,所述步骤幻中,测定绝缘纸聚合度、绝缘油中溶解气体含量和绝缘油中微水含量中的至少一种绝缘老化参数。 [0018] Further, the step of magic, the measured degree of polymerization of insulating paper, an insulating oil and insulating oil dissolved gas content at least of one parameter of water content insulation degradation is.

[0019] 与现有技术相比,本发明填补了对变压器电、热、机械应力多因子老化研究的空白,所设计的电、热、机械振动三应力联合加速老化的试验装置及评价老化的方法能有效揭示变压器老化规律,使之比单因子电老化或者热老化或者机械老化的方法更接近变压器的实际运行情况,提高了试验数据可靠性同时也有效地缩短了老化时间。 [0019] Compared with the prior art, the present invention fill the gaps in the transformer electrical, thermal, mechanical stress of the multi-factor aging studies, and evaluation test apparatus designed electrical, thermal, mechanical vibrations combined three stress accelerated aging aging method can reveal the transformer aging law, so that the aging factor than a single electrical or mechanical aging heat aging or closer to the actual method of operation of the transformer, to improve the reliability of the experimental data but also effectively shorten the aging time.

[0020] 本发明的其他优点、目标,和特征在某种程度上将在随后的说明书中进行阐述,并且在某种程度上,基于对下文的考察研究对本领域技术人员而言将是显而易见的,或者可以从本发明的实践中得到教导。 [0020] Additional advantages, objects, and features will be to some extent set forth in the description which follows and, in part, based on a study of the following investigation to those skilled in the art will become apparent to , or may be learned from practice of the invention. 本发明的目标和其他优点可以通过下面的说明书,权利要求书,以及附图中所特别指出的结构来实现和获得。 Other objects and advantages of the invention may be realized and obtained by the following description, claims, and drawings structure particularly pointed out.

附图说明 BRIEF DESCRIPTION

[0021] 为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步的详细描述: [0021] To make the objectives, technical solutions, and advantages of the present invention will become apparent in conjunction with the accompanying drawings below of the present invention will be further described in detail:

[0022] 附图示出了本发明变压器油纸绝缘多因子加速老化试验装置的结构示意图。 [0022] The accompanying drawings illustrate the present invention, a transformer oil-paper insulating structural diagram of a multi-factor accelerated aging test apparatus. 具体实施方式 detailed description

[0023] 以下将参照附图,对本发明的优选实施例进行详细的描述。 [0023] below with reference to the accompanying drawings, detailed description of embodiments of the present invention is preferably.

[0024] 参见图1,本优选实施例的变压器油纸绝缘多因子加速老化试验装置,包括一电热老化箱2,电热老化箱2内腔的底部设置有振动装置8,不锈钢箱体4设置于振动装置8上, 可随振动装置振动,不锈钢箱体4的上盖为绝缘密封板7,不锈钢箱体4内间隔设置有3块硅钢板5作为地电极,本装置在使用时,将绝缘纸9贴在硅钢板5上,同时将三个线圈分别缠绕固定在绝缘纸9的外面作为高压电极12,并在不锈钢箱体4内注入绝缘油13,使其淹没地电极5及绝缘纸9,绝缘油13、高压电极12和绝缘纸9即组成变压器内绝缘的模拟装置,电热老化箱2顶部设置有供高压引线穿入的高压套管6,高压电源通过高压套管6引入到电热老化箱2内,并通过高压引线1分别与绝缘密封板7上的接线端子14输入端连接, 在不锈钢箱体内部高压电极12通过高压引线1分别与绝缘密封板7上的接线端子14 [0024] Referring to Figure 1, transformer oil-paper insulating multifactorial embodiment of the present embodiment is preferably accelerated aging test apparatus, comprising a vibrating means 8 electrothermal aging tank 2, heating the aging chamber bottom 2 is provided with a lumen, a stainless steel box 4 disposed to the vibrating 8 apparatus, the vibration means may vary, stainless steel cabinet cover 4 is an insulating sealing plate 7, a stainless steel spacer is provided with a housing 43 of silicon steel sheets as the ground electrode 5, the present apparatus is in use, insulating paper 9 attached to the silicon steel sheet 5, while the three coils are wound around the outside of the insulation sheet 9 is fixed to a high voltage electrode 12, and insulating oil 13 is injected in a stainless steel casing 4, so as to submerge the electrode and the insulating sheet 5 9, insulating oil 13, and the high voltage electrode 12 composed of an insulating sheet 9 i.e. insulation in the transformer simulation apparatus, heating the aging chamber 2 is provided with a top voltage bushing for penetration of the high-voltage lead 6, high voltage power supply 6 through a high voltage bushing is introduced into the aging chamber glow 2 inside, respectively through high-voltage lead terminal insulating sealing plate 14 on the input terminal 7 is connected to the high voltage electrode in the interior of the casing 12 through a high pressure stainless steel leads are sealed with the insulating plate 1 on terminal 7141 输出端连接,绝缘密封板7上的接线端子14主要起密封和导电作用,不锈钢箱体4上部设有与不锈钢箱体4内腔连通的三通阀3,所述三通阀3的另两个端口分别用于连接抽真空设备和充氮气设备,用作抽真空或充氮气时的通断阀门,不锈钢箱体4下部设有与不锈钢箱体内腔连通排油阀10,排油阀10用做试验过程中取油测量和试验完毕后排油,与不锈钢箱体4连通的接地端子11通过导线与电热老化箱2内壁连接,并通过电热老化箱2外壳可靠接地。 An output terminal connected to the insulating sealing plate on the terminal 714 and the conductive sealing effect mainly from stainless steel three-way valve is provided with an upper portion of the tank 4 communicates with the lumen 4 of the stainless steel casing 3, the other two 3-way valve ports are used to connect devices and filled with nitrogen evacuation apparatus, when the on-off valve is used as vacuum or nitrogen purge, the lower portion 4 is provided with a stainless steel housing 10, drain valve chamber 10 communicates with a stainless steel cabinets drain valve oil taken during a test and measurement test is completed a ground terminal communication rear oil, the casing 411 and the stainless steel inner wall are connected by electric wires and aging tank, the aging tank 2 through electric shell grounded.

[0025] 本实施例采用韩国SANW0NTECH(三元)公司产TEMP550中文液晶触摸屏可编程温度控制器进行温度控制,所述可编程温度控制器与电热老化箱2连接,用于控制电热老化箱2的温度。 [0025] The present embodiment Korean SANW0NTECH (three yuan) TEMP550 Chinese company producing LCD touch screen programmable temperature controller for temperature control, a programmable temperature controller 2 is connected with the electricity aging tank, the aging tank 2 for controlling the electric temperature. 该可编程温度控制器采用5. 6英寸单色液晶触摸屏显示器,中文操作显示界面,可显示设定试验参数,运行时间。 The programmable temperature controller with 5.6 inches monochrome LCD touchscreen display, Chinese operation display screen, can display setting test parameters, run time. 人机对话方式,仅需设定温度,就可实现电热老化箱2 自动运行功能。 Human-computer dialogue, only the set temperature, aging can be achieved electric box 2 auto-run function. 温度控制系统使用智能化控制软件系统,具备自动组合加热系统的工况,从而保证在整个温度范围的高精度控制,达到节能降耗的目的。 The temperature control system using software object intelligent control system, in combination with automatic heating system operating conditions, thus ensuring high-precision control over the entire temperature range, to achieve energy saving.

[0026] 本优选实施例的变压器油纸绝缘多因子加速老化试验方法,包括如下步骤: [0026] Paper Insulation transformer multifactorial embodiment of the present embodiment is preferably accelerated aging test method, comprising the steps of:

[0027] 1)将绝缘纸置于真空箱中,在温度90°C、真空度50½条件下,真空干燥48小时; [0027] 1) The insulating paper is placed in a vacuum oven, at a temperature of 90 ° C, vacuum degree condition 50½, dried 48 hours in vacuo;

[0028] 2)干燥完毕后,保持真空箱内真空度不变,将温度调整为40°C,将绝缘油注入真空箱,浸油M小时后冷却到室温,取出绝缘纸; After [0028] 2) drying is completed, the degree of vacuum in a vacuum oven maintained constant, the temperature was adjusted to 40 ° C, the insulating oil into the vacuum tank, the immersion oil M h cooled to room temperature, remove the insulating paper;

[0029] 3)将真空浸油后的绝缘纸贴于变压器油纸绝缘多因子加速老化试验装置不锈钢箱体内的地电极上,并在绝缘纸及地电极外缠绕线圈作为高压电极,并向不锈钢箱体内注入绝缘油,绝缘油可采用25#变压器油; [0029] 3) The insulating sheet after vacuum transformer oil-impregnated paper insulation affixed to the multi-factor accelerated aging test apparatus on the ground electrode of stainless steel cabinets, and a coil wound around the outer insulation as the high voltage electrode and the ground electrode sheet, and a stainless steel tank body into insulating oil, insulating oil 25 # transformer oil may be employed;

[0030] 4)将高压引线与高压电源接通,并开启振动装置,所述高压电源提供IlkV交流电压,所述振动装置振动频率为50Hz ;; [0030] 4) The high voltage power supply is turned on with high-voltage lead, and vibration device is turned on, the high voltage power supply provides an AC voltage IlkV, the vibration frequency of the vibration device 50Hz ;;

[0031] 5)对绝缘纸、绝缘油间隔取样,测定绝缘纸聚合度、绝缘油中溶解气体成分和绝缘油中微水含量等参数,其中绝缘油中溶解气体成分可采用气相色谱仪测量,绝缘油中微水含量可采用卡尔非休微水测量仪测量;通过对这些参数的分析,特别是绝缘纸聚合度的变化规律,评价油纸绝缘的老化,预测变压器使用寿命,减少变压器绝缘故障。 [0031] 5) the sampling interval of insulating paper, insulating oil, insulating paper measuring the degree of polymerization, the insulating oil and the gas component solubility parameter of water content in the insulating oil and the like, wherein the insulating oil is dissolved gas components can be measured by gas chromatography, water content in the insulating oil may be employed off the moisture measurement of the non Karl measured; analysis of these parameters, in particular the variation of the degree of polymerization of insulating paper, evaluation of oil-paper insulation aging, prediction transformer life and reduce the transformer insulation failure.

[0032] 以上所述仅为本发明的优选实施例,并不用于限制本发明,显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 [0032] The above are only preferred embodiments of the present invention is not intended to limit the present invention, be apparent to those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (9)

1.变压器油纸绝缘多因子加速老化试验装置,其特征在于:包括电热老化箱,电热老化箱内设置有变压器油纸绝缘模拟装置、振动装置和用于控制电热老化箱内温度的温度控制装置,所述振动装置能带动变压器油纸绝缘模拟装置振动,变压器油纸绝缘模拟装置与高压电源电连接;所述变压器油纸绝缘模拟装置包括一不锈钢箱,所述不锈钢箱内间隔设置有多组电极,每组电极包括一地电极和一高压电极,所述不锈钢箱体的上盖为绝缘密封板,绝缘密封板上设置有接线端子,接线端子的输入端与高压电源电连接,高压电极通过高压引线与绝缘密封板上的接线端子输出端连接;所述不锈钢箱体上部设置有与不锈钢箱体内腔连通的三通阀,所述三通阀的两个端口分别用于连接抽真空设备和充氮气设备;所述地电极与不锈钢箱体电连接,所述不锈钢箱体上还 1. Paper Insulation transformer multi-factor accelerated aging test apparatus comprising: a heating aging tank, the aging tank is provided with an electric paper insulation transformer simulation apparatus, the vibration means and temperature control means for controlling the heating temperature for the aging tank, the said vibrating means can drive the paper insulation of the transformer vibration simulation apparatus, oil-paper insulation transformer simulation apparatus is electrically connected to the high voltage power supply; paper insulation of the transformer comprises a stainless steel tank simulation apparatus, a plurality of sets of stainless steel tank spaced electrodes, each electrode comprising a high voltage electrode and a ground electrode, a stainless steel box cover insulating sealing plate, the sealing plate is provided with an insulating terminal, the input terminal is electrically connected to the high voltage power supply, high-voltage electrode through the high-voltage lead and the insulating seal an output terminal connected to the end plate; an upper portion of the housing is provided with a stainless steel tank space communicating with the three-way valve, two ports of the three-way valves are used to connect devices and vacuum devices filled with nitrogen; the said ground electrode is electrically connected with the stainless steel box, the box body further stainless steel 置有接地端子。 Opposing ground terminal.
2.如权利要求1所述的变压器油纸绝缘多因子加速老化试验装置,其特征在于:所述不锈钢箱体底部设有与不锈钢箱体内腔连通的排油阀。 2. The paper insulation of the transformer as claimed in claim 1, multi-factor accelerated aging test apparatus, wherein: the oil discharge valve is provided with stainless steel tank space communicates with the bottom of the box.
3.如权利要求1所述的变压器油纸绝缘多因子加速老化试验装置,其特征在于:所述地电极为硅钢板,硅钢板用于固定绝缘纸,高压电极为缠绕在绝缘纸与硅钢板外的线圈。 3. The transformer as claimed in claim 1, said oil-paper insulating multi-factor accelerated aging test apparatus, characterized in that: the ground electrode is a silicon steel plate, silicon steel sheet for fixing the insulating sheet, an extremely high voltage insulating paper wound around the outer silicon steel sheet coil.
4.基于权利要求1所述变压器油纸绝缘多因子加速老化试验装置的变压器油纸绝缘多因子加速老化试验方法,其特征在于,包括如下步骤:1)将绝缘纸真空干燥;2)将绝缘纸真空浸油;3)将真空浸油后的绝缘纸贴于变压器油纸绝缘多因子加速老化试验装置不锈钢箱体内的地电极上,并在绝缘纸及地电极外面缠绕线圈作为高压电极,并向不锈钢箱体内注入绝缘油;4)将高压引线与高压电源接通,并开启振动装置;5)对绝缘纸、绝缘油间隔取样,测定绝缘老化参数。 4. Based on the multi-factor transformer paper insulation transformer as claimed in claim accelerated aging test device multifactorial paper insulation accelerated aging test method comprising the steps of: a) vacuum drying the insulation sheet; 2) the vacuum insulating paper immersion oil; 3) after vacuum insulating oil-impregnated paper affixed to the transformer oil-paper insulating multi-factor accelerated aging test apparatus on the ground electrode of stainless steel cabinets, and a coil wound on the outside as a high voltage electrode and the ground electrode insulating paper, and a stainless steel tank vivo injection insulating oil; 4) the high voltage power supply is turned on with high-voltage lead, and vibration means opening; 5) on the insulating paper, an insulating oil sample interval, to measure the insulation aging parameters.
5.如权利要求4所述的变压器油纸绝缘多因子加速老化试验方法,其特征在于:所述步骤1)中,将绝缘纸在温度80-100°C、真空度40-60½条件下,真空干燥48小时。 5. The paper insulation transformer as claimed in claim 4, wherein the multi-factor accelerated aging test, characterized in that: in said step 1), the insulation sheet at a temperature of 80-100 ° C, vacuum degree 40-60½ conditions vacuo dried for 48 hours.
6.如权利要求4所述的变压器油纸绝缘多因子加速老化试验方法,其特征在于:所述步骤2)中,将绝缘纸在温度30-50°C、真空度40-60½条件下,真空浸油M小时。 6. The paper insulation transformer according to claim 4 multi-factor accelerated aging test, characterized in that: in the step 2), the insulation sheet at a temperature of 30-50 ° C, vacuum degree 40-60½ conditions vacuo M h immersion oil.
7.如权利要求4所述的变压器油纸绝缘多因子加速老化试验方法,其特征在于:所述绝缘油采用25#变压器油。 7. The paper insulation transformer according to claim 4 multi-factor accelerated aging test method, wherein: said insulating oil in 25 # transformer oil.
8.如权利要求4所述的变压器油纸绝缘多因子加速老化试验方法,其特征在于:所述步骤4)中,所述高压电源提供IlkV交流电压,所述振动装置振动频率为40-60HZ。 8. The paper insulation transformer according to claim 4 multi-factor accelerated aging test method, wherein: said step 4), the high voltage power supply provides an AC voltage IlkV, the frequency of vibration of the vibrating means 40-60HZ.
9.如权利要求4至8中任一项所述的变压器油纸绝缘多因子加速老化试验方法,其特征在于:所述步骤幻中,至少测定绝缘纸聚合度、绝缘油中溶解气体含量和绝缘油中微水含量中的一种绝缘老化参数。 9. A transformer as claimed in any one of oil-paper insulating multifactorial 4-8 accelerated aging test method as claimed in claim, wherein: said step phantom, determining degree of polymerization of at least an insulating sheet, the insulating oil and dissolved gas content insulated insulating oil of one of water content in the aging parameters.
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