JP2003289008A - Deterioration diagnostic device for oil-immersed transformer - Google Patents

Deterioration diagnostic device for oil-immersed transformer

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JP2003289008A
JP2003289008A JP2002091169A JP2002091169A JP2003289008A JP 2003289008 A JP2003289008 A JP 2003289008A JP 2002091169 A JP2002091169 A JP 2002091169A JP 2002091169 A JP2002091169 A JP 2002091169A JP 2003289008 A JP2003289008 A JP 2003289008A
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oil
winding
transformer
heating
pipe
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JP4125907B2 (en
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Junichi Matsumura
順一 松村
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Daihen Corp
株式会社ダイヘン
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Abstract

PROBLEM TO BE SOLVED: To provide a deterioration diagnostic device for an oil-immersed transformer in which the reliability of deterioration diagnosis is improved when the deterioration diagnosis is performed by sampling an insulator used for the oil-immersed transformer.
SOLUTION: This device comprises a diagnostic piece 11 formed of a paper- wrapped electric insulated wire 3a similar to a paper-wrapped electric insulated wire 3a used for a winding 3 in an oil-immersed transformer 1; a housing chamber 13, provided at an upper part in a tank 2 of the oil-immersed transformer 1, which house a pressing means 12 together with the diagnostic piece 11 under a condition that the piece is pressurized by pressure which the winding 3 receives and soaked in an insulation oil 4; and an auxiliary heating means 16 that heats the insulation oil 4 in the housing chamber 13 up to a temperature equal to or near a highest temperature of the winding 3 of the oil-immersed transformer 1.
COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、大形の油入変圧器に適した劣化診断装置に関するものである。 BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention relates to deterioration diagnosis device suitable for large size oil-filled transformers. 【0002】 【従来の技術】油入変圧器の劣化診断装置は、油入変圧器に使用されている絶縁物の劣化度で以て油入変圧器の劣化度を診断するものである。 [0002] deterioration diagnosis device BACKGROUND OF THE INVENTION oil-filled transformer, is diagnostic of the degree of degradation of the oil-filled transformer Te than in the deterioration degree of the insulation used in oil-filled transformers. 油入変圧器においては、 In the oil-filled transformer,
運転中の温度上昇によって絶縁物が経年劣化する。 Insulator is deteriorated over time due to temperature rise during operation. また絶縁物の一部は熱分解して可燃性ガス、フルフラール生成物等を発生して絶縁油に溶解する。 The portion of the insulator is dissolved combustible gases by thermally decomposing, and generates a furfural products and the like in the insulating oil. 従来の劣化診断装置の診断方法としては、この絶縁油中の溶存ガスの成分分析を行って診断するもの、あるいは油入変圧器に使用されている絶縁物を採取し平均重合度を測定して診断するもの、あるいはこれら両者を用いて診断するもの等の方法がある。 The diagnostic method of the conventional deterioration diagnosis device, this shall be diagnosed by performing the component analysis of the dissolved gas in the insulating oil, or an insulator used in oil-filled transformers were taken by measuring the average polymerization degree those diagnosed, or a method, such as those diagnosed with both. 油入変圧器では、これらの診断方法を活用して予防保全を図っている。 The oil-filled transformers, thereby achieving a preventive maintenance and use of these diagnostic methods. 【0003】 【発明が解決しようとする課題】油入変圧器に使用されている絶縁物を採取して劣化診断を行うには、絶縁物は巻線の最高温度に達する部分から採取することが最適であるが、その部分は巻線の内層部にあるために巻線を分解しなければ絶縁物を採取することができないので、他の部分から採取していた。 [0003] To perform the deterioration diagnosis were taken insulator used in oil-filled transformers THE INVENTION trying challenge to provide a process, insulating material can be taken from the portion reaching the maximum temperature of the windings is optimal, that part can not be taken an insulator unless decompose winding because of the inner layer of the winding, has been taken from other portions. この採取方法では、信頼性が乏しいと言う問題があった。 In this sampling method, there has been a problem that the poor reliability. 【0004】本発明の目的は、劣化診断の信頼性を向上させた油入変圧器の劣化診断装置を提供することにある。 An object of the present invention is to provide a degradation diagnostic apparatus for diagnosing deterioration of reliability oil-filled transformers with improved. 【0005】 【課題を解決するための手段】本発明は、油入変圧器のタンク内の上部に設けた収容室に診断片を収容して、この収容室に収容された診断片を定期的に採取して劣化診断を行う油入変圧器の劣化診断装置に関するものである。 [0005] According to an aspect of the present invention is to accommodate a diagnostic piece accommodating chamber provided in an upper portion of the tank of the oil-filled transformers, periodic diagnosis pieces accommodated in the accommodating chamber it relates deterioration diagnosis device for an oil-filled transformer performing the deterioration diagnosis taken. 【0006】請求項1に記載の発明は、油入変圧器の巻線に使用している紙巻き絶縁電線と同種の紙巻き絶縁電線から形成された診断片を、油入変圧器のタンク内の上部に設けられた収容室に巻線が受ける圧力で加圧した状態でかつ絶縁油に浸漬した状態で加圧手段と共に収容して、収容室内の絶縁油の温度を巻線の最高温度と同じ又はそれに近い温度まで更に加熱するようにしたものである。 [0006] The invention according to claim 1, the diagnostic pieces formed from cigarette insulated wire cigarette insulated wire of the same kind which are used in oil-filled transformer windings, the upper portion of the tank for an oil-filled transformer houses with pressurized means immersed state to the state a and the insulating oil was pressurized with a pressure which winding accommodating chamber provided is subjected, the same or the temperature of the insulating oil storage chamber between the maximum temperature of the windings and those that so as to further heated to a temperature close. 請求項1の発明においては、絶縁紙と導体とが一体となって形成されて実際の絶縁紙の使用環境と同等の環境を模擬できる診断片を、巻線の紙巻き絶縁電線の加圧状態及び温度状態と同等の環境に置くことによって劣化状態が模擬されて、巻線の紙巻き絶縁電線から診断片を採取する場合と同等の劣化状態の診断片が形成され、信頼性が向上した油入変圧器の劣化診断を行うことができる。 In the invention of claim 1, insulating paper and the conductor diagnostic pieces that can simulate the same environment and the use environment of actual insulation paper are formed together, and pressurized state cigarette insulated wire windings is simulated the deterioration state by placing the temperature conditions equivalent environment, diagnosed piece forming equivalent deteriorated state and when collecting a diagnostic piece from cigarettes insulated wire windings, oil-filled transformers with improved reliability it is possible to perform the deterioration diagnosis of the vessel. 【0007】請求項2に記載の発明は、加圧手段に、加圧力が調整可能な弾性体を備えたものである。 [0007] According to a second aspect of the invention, the pressurizing means, in which the pressure with adjustable elastic body. 請求項2 Claim 2
の発明においては、弾性体の歪み量の調整によって加圧力の調整ができ、油入変圧器の容量に応じた適正な加圧力が設定できる。 In the invention, it can be adjusted pressure by adjusting the amount of strain of the elastic body can be set appropriate pressure in accordance with the capacity of the oil-filled transformer. 【0008】請求項3に記載の発明は、補助加熱手段に、発熱体と、油入変圧器の負荷電流を入力として発熱体の加熱源となる変流器と、負荷電流に基づいて発熱体が発生する発熱量を調整する発熱調整器とを備えたものである。 [0008] invention as set forth in claim 3, the auxiliary heating means, a heating element, a current transformer which is a heating source of the heating element the load current of the oil-filled transformer as an input, the heating element based on the load current There is obtained a heating regulator for regulating the amount of heat generated. 請求項3の発明においては、負荷電流に対応した発熱量の変化を模擬でき、この発熱量の変化が診断片の劣化状態の模擬に寄与する。 In the invention of claim 3, able to simulate a change in the heating value corresponding to the load current, change of the calorific value contributes to simulate the deteriorated state of the diagnostic strip. 【0009】請求項4に記載の発明は、収容室とタンク内とを連通するパイプと、このパイプに絶縁油を循環させるポンプとを更に設けたものである。 [0009] The invention according to claim 4, a pipe for communicating the accommodating chamber and the tank, and further provided with a pump for circulating the insulating oil in the pipe. 請求項4の発明においては、絶縁油がパイプを通じて収容室とタンク内とを循環して、収容室内の診断片は巻線の紙巻き絶縁電線と同等の絶縁油環境となり絶縁油中の水分及び酸素等が劣化状態の模擬に寄与する。 In the invention of claim 4, the insulating oil is circulated between storage chamber and the tank through a pipe, diagnostic piece accommodating chamber becomes cigarettes insulated wire equivalent insulating oil environment windings moisture and oxygen in the insulating oil etc. contributes to simulate the deterioration state. 【0010】請求項5に記載の発明は、収容室とタンク内とを連通するパイプと、このパイプに絶縁油の流動を遮断できるバルブとを更に設けたものである。 [0010] The invention of claim 5 includes a pipe for communicating the accommodating chamber and the tank is obtained by providing further a valve capable of blocking the flow of insulating oil in the pipe. 請求項5 According to claim 5
の発明においては、バルブを閉鎖位置に切り換えると、 In the invention, when switching the valve in the closed position,
絶縁油の流動を遮断して収容室とタンク内とを隔離することができ、絶縁油が噴出することなく診断片の取り出しが行える。 Insulating oil flow can isolate the interrupted to accommodating chamber and the tank of, allows to take out a diagnostic piece without insulating oil is ejected. 【0011】 【発明の実施の形態】図1は、本発明に係る油入変圧器の劣化診断装置を設けた油入変圧器の構成図、図2は、 DETAILED DESCRIPTION OF THE INVENTION Figure 1 is a block diagram of a deterioration diagnosis device for an oil-filled transformer according to the present invention provided an oil filled transformer, FIG. 2,
本発明に係る油入変圧器の劣化診断装置の一実施形態を示す構成図、図3は、その油入変圧器の劣化診断装置の加圧手段の組立構造を示す分解斜視図である。 Configuration diagram showing an embodiment of a deterioration diagnosis device for an oil-filled transformer according to the present invention, FIG. 3 is an exploded perspective view showing the assembly structure of the pressurizing means of the oil-filled transformers deterioration diagnosis device. 【0012】この実施形態の油入変圧器1の劣化診断装置10は、診断片11と、この診断片11を加圧する加圧手段12と、診断片11が加圧された状態でかつ絶縁油4に浸漬した状態で加圧手段12と共に収容する収容室13と、収容室13内の絶縁油4を油入変圧器1の巻線3の最高温度と同じ又はそれに近い温度まで更に加熱する補助加熱手段16と、絶縁油4を循環させるポンプ14と、絶縁油4の流動を遮断できるバルブ15とから成っている。 [0012] degradation diagnosis device 10 for an oil-filled transformer 1 of this embodiment includes a diagnostic strip 11, a pressurizing means 12 for pressurizing the diagnostic strip 11, the state a and insulating oil diagnostic piece 11 is pressurized an accommodation chamber 13 for accommodating with pressure means 12 immersed state 4, the insulating oil 4 in the storage space 13 further heated to a temperature close same or in the maximum temperature of the windings 3 of the oil-filled transformer 1 Supplement and heating means 16, a pump 14 for circulating the insulating oil 4 consists of a valve 15 which can block the flow of insulating oil 4. 【0013】診断片11は、油入変圧器1の巻線3に使用している紙巻き絶縁電線3aと同種の電線から、導体11bと絶縁紙11aとを一体で適宜の長さで切り取ったものである。 [0013] Diagnostic strips 11 from cigarette insulated wire 3a and the same type of wire being used for winding 3 of the oil-filled transformer 1, and a conductor 11b insulating paper 11a that cut at an appropriate length integrally it is. なお、診断片11は、劣化診断を定期的に行えるように複数個作られる。 Incidentally, the diagnosis strip 11 is made a plurality to perform the deterioration diagnosis periodically. 【0014】加圧手段12は、台板12aと、台板12 [0014] The pressure means 12, and the base plate 12a, base plate 12
aの片面に適宜の間隔をもって垂設された一端に雄ネジ12hを有する一対の軸12bと、軸12bが貫通する一対の孔12fが設けられた押さえ板12cと、ナット12dと、加圧力が調整可能な弾性体12e(例えばバネ)と、歪みゲージ12gとから成っている。 A pair of shaft 12b having a male thread 12h to have appropriate intervals vertically by one end on one side of a, a retainer plate 12c having a pair of holes 12f is provided with the shaft 12b passes, the nut 12d, the pressure adjustable elastic 12e (e.g. a spring), is made up with the strain gage 12g. この加圧手段12は、押さえ板12cと取出口蓋13aとが連結棒13cで連結されて収容室13に固定されている。 The pressure means 12, and a pressing plate 12c and the lead palate 13a is fixed to the housing chamber 13 are connected by a connecting rod 13c. また、加圧力は、油入変圧器1の容量に応じた適正な圧力とし、歪みゲージ12gの歪み値を測定しながら調整する。 Further, pressure may be an appropriate pressure corresponding to the capacity of the oil-filled transformer 1, adjusted while measuring the strain of the strain gage 12g. なお、12gAは測定端子である。 It should be noted, 12gA is a measurement terminal. 【0015】収容室13は、上部に取出口蓋13aで開閉できる取出口13bが設けられて、タンク2内の上部にタンク2内とは隔離して設けられ、絶縁油4が充填されている。 The accommodating chamber 13 is outlet 13b is provided that can be opened and closed at the top by removal palate 13a, provided isolated from the tank 2 to the top of the tank 2, insulating oil 4 is filled. また、取出口13bでは、診断片11が、加圧手段12に装着されて加圧手段12と共に出し入れが行われる。 Further, the outlet port 13b, diagnostic strip 11, and out with pressure means 12 is performed is attached to the pressurizing means 12. 【0016】補助加熱手段16は、発熱体16a(例えば電熱器)と、負荷電流を入力として発熱体16aの加熱源となる変流器16cと、負荷電流に基づいて発熱体16aが発生する発熱量を調整する発熱調整器16bとから成っている。 The auxiliary heating means 16, the heating element 16a (for example, electric heater), a current transformer 16c serving as a heat source of the heating element 16a of the load current as an input, heating the heating element 16a is generated based on the load current It consists a heating regulator 16b for adjusting the amount. この補助加熱手段16では、発熱体1 In the auxiliary heating means 16, the heating element 1
6aが収容室13内に設けられ、油入変圧器1の外部に設けられた発熱調整器16bを介して、二次ブッシング1aの近傍に設けられた変流器16cに電気的に接続されている。 6a is provided in the housing chamber 13, through a heating regulator 16b provided outside of the oil-filled transformer 1, it is electrically connected to the current transformer 16c provided in the vicinity of the secondary bushings 1a there. 【0017】上記のような油入変圧器1の劣化診断装置10では、紙巻き絶縁電線3aから切り取った診断片1 [0017] In the degradation diagnostic apparatus 10 of the oil-filled transformer 1 as described above, diagnosis pieces were cut from cigarette insulated wire 3a 1
1を下記のように装着する。 Mounting the 1 in the following manner. 先ず、加圧手段12では、 First, in the pressurizing means 12,
軸12bが垂設された台板12aの一面を上方に向け、 Towards one side of the shaft 12b is vertically provided bedplate 12a upward,
この面の軸12bと他方の軸12bとの間に診断片11 Diagnostic strips 11 between the shaft 12b and the other shaft 12b of the surface
を複数個重ねて載せ、その上に歪みゲージ12gを重ね、更に押さえ板12cを一対の軸12bに緩挿して重ね、更に押さえ板12cの孔12fから突出した一対の軸12bに弾性体12eを緩挿して、更に一対の軸12 Placed overlapping a plurality of overlaid strain gage 12g thereon, a further pressing plate 12c and loosely inserted superimposed on a pair of shaft 12b, the elastic member 12e to a pair of shaft 12b projecting from the further pressing plate 12c of the hole 12f loosely inserted, the further pair of shafts 12
bの雄ネジ12hにナット12dを螺合して締め付けて、巻線3が受ける圧力で加圧する。 The male thread 12h of b tightening screwed a nut 12d, pressurized with a pressure which is winding 3 receives. ここで、加圧力は、弾性体12eを加圧して加圧力に対応した歪み量で以て設定する。 Here, pressure is set Te than a strain amount corresponding elastic body 12e to pressurizing pressure. 次に、診断片11を装着した加圧手段1 Then, pressurizing means equipped with a diagnostic piece 11 1
2を、取出口13bを通して収容室13に収容する。 2, is accommodated in the accommodating chamber 13 through the outlet 13b. また、診断片11を採取するには、取出口蓋13aを開けて加圧手段12を取り出して診断片11の加圧状態を開放して、一回の診断に必要な診断片11を取り出す。 Further, the collected diagnostic piece 11 opens the pressurized state of the diagnostic strip 11 is taken out pressurizing means 12 to open the takeout palate 13a, taken out diagnostic strip 11 required to diagnose once. 【0018】また、上記のような油入変圧器1の劣化診断装置10では、油入変圧器1が運転されると、紙巻き絶縁電線3aには油入変圧器1の負荷電流が流れて巻線3全体が発熱して、タンク2内の絶縁油4は温度が上昇して対流して収容室13を加熱する。 Further, the degradation diagnosis device 10 for an oil-filled transformer 1 as described above, the oil-filled transformer 1 is operated, the cigarette insulated wire 3a flows through the load current of the oil-filled transformer 1 winding and the entire line 3 is exothermic, insulating oil 4 in the tank 2 to heat the storage chamber 13 by convection the temperature rises. 収容室13が加熱されると、収容室13内の絶縁油4の温度がタンク2内の絶縁油4の温度と同じ温度まで上昇する。 When accommodating chamber 13 is heated, the temperature of the insulating oil 4 in the storage space 13 rises to the same temperature as the temperature of the insulating oil 4 in the tank 2. 更に、補助加熱手段16で、収容室13内の絶縁油4の温度を巻線3の最高温度と同じ又はそれに近い温度まで加熱する。 Further, the auxiliary heating means 16 to heat the temperature of the insulating oil 4 in the storage space 13 to a temperature close same or in the maximum temperature of the winding 3. 【0019】ここで、診断片11は、タンク2内の絶縁油4の最高温度相当分の熱量と、補助加熱手段16の発熱量とを合算した熱量を受熱して、巻線3の最高温度と同じ又はそれに近い温度となる。 [0019] Here, the diagnostic strip 11 is to heat the highest temperature equivalent of the energy of the insulating oil 4 in the tank 2, the amount of heat obtained by summing the heating value of the auxiliary heating means 16, the maximum temperature of the windings 3 the same or a temperature close thereto and. 【0020】以上のような、加圧手段12及び補助加熱手段16によって診断片11は、巻線3の紙巻き絶縁電線3aと同等の圧力環境及び温度環境に置かれることになり、巻線3の紙巻き絶縁電線3aと同等の劣化を受けることになる。 The above as a diagnostic strip 11 by pressure means 12 and the auxiliary heating means 16, will be placed in the cigarette insulated wire 3a equivalent pressure environment and temperature environment of the winding 3, the winding 3 It will undergo cigarette insulated wire 3a equivalent to degradation. 【0021】また、収容室13とタンク2内とを連通する一組のパイプ9と、一方のパイプ9に絶縁油4を循環させるポンプ14とを設けると、絶縁油4がパイプ9を通じて収容室13とタンク2内とを循環して、収容室1 Further, a pair of pipe 9 for communicating the accommodating chamber 13 and the tank 2, providing a pump 14 for circulating the insulating oil 4 on one of the pipe 9, the insulating oil 4 containing chamber through pipe 9 circulating the 13 and the tank 2, accommodating chambers 1
3内の診断片11は、巻線3の紙巻き絶縁電線3aと同等の絶縁油環境に置かれることになり、巻線3の紙巻き絶縁電線3aと同等の劣化を受けることになる。 Diagnostic strips 11 in the 3, will be placed in the cigarette insulated wire 3a equivalent insulating oil environment of the winding 3, will undergo the same degradation and cigarette insulated wire 3a of the winding 3. ここで、パイプ9の収容室13内の端部は、絶縁油4の循環を一様にするために、一方のパイプ9は収容室13内の上部付近に、他方のパイプ9は収容室13内の下部付近に設けられている。 Here, the end portion of the accommodating chamber 13 of the pipe 9, in order to equalize the circulation of the insulating oil 4, one of the pipe 9 near the top of the storage chamber 13, the other pipe 9 accommodating chamber 13 It is provided near the bottom of the inner. 【0022】また、収容室13とタンク2内とを連通する一組パイプ9と、パイプ9に絶縁油4の流動を遮断できるバルブ15とを設けると、バルブ15を閉鎖位置に切り換えた場合に、絶縁油4の流動を遮断して収容室1 Further, a set pipe 9 for communicating the accommodating chamber 13 and the tank 2, providing a valve 15 that can shut off the flow of insulating oil 4 to the pipe 9, when the switching valve 15 in the closed position , receiving chamber 1 to shut off the flow of insulating oil 4
3とタンク2内とを隔離することができ、絶縁油4が噴出することなく診断片11の取り出しが行える。 Can isolate the 3 and the tank 2, can be performed is taken out of the diagnostic strip 11 without insulating oil 4 is ejected. 【0023】 【発明の効果】以上のように請求項1に記載の発明によれば、油入変圧器の巻線に使用している紙巻き絶縁電線と同種の紙巻き絶縁電線から形成された診断片を、油入変圧器のタンク内の上部に設けられた収容室に巻線が受ける圧力で加圧された状態でかつ絶縁油に浸漬した状態で加圧手段と共に収容して、収容室内の絶縁油の温度を油入変圧器の巻線の最高温度と同じ又はそれに近い温度まで更に加熱するようにしたので、絶縁紙と導体とが一体となって形成されて実際の絶縁紙の使用環境と同等の環境を模擬できるこの診断片は、巻線の紙巻き絶縁電線の加圧状態及び温度状態と同等の環境に置かれることになり、巻線の紙巻き絶縁電線から診断片を採取する場合と同等の劣化状態の診断片が形成され、信頼性が向上した油 According to the invention described in claim 1 as above, according to the present invention, oil-filled transformer diagnosis pieces formed from cigarette insulated wire cigarette insulated wire of the same kind which are used in the windings of the and houses immersed in the oil-filled transformers states a and insulating oil is pressurized at a pressure winding undergoes accommodating chamber provided in the upper portion of the tank with pressurized means, insulating the accommodating chamber since the temperature of the oil was to further heated to a temperature close same or in the maximum temperature of the oil immersed transformer windings, insulating paper and the conductor and the use environment of actual insulation paper are formed together equivalent to that the diagnostic strips which can simulate the same environment, which will be placed in the winding under pressure and temperature conditions equivalent to environmental cigarette insulated wire, collecting diagnostic specimens from cigarettes insulated wire windings diagnosed piece of state of deterioration formation, the oil of which reliability has been improved 入変圧器の劣化診断を行うことができる。 It is possible to perform the deterioration diagnosis of the input transformer. 【0024】請求項2に記載の発明によれば、加圧手段に、加圧力が調整可能な弾性体を備えたので、弾性体の歪み量の調整によって加圧力の調整ができ、油入変圧器の容量に応じた適正な加圧力が設定できる。 According to the invention described in claim 2, the pressurizing means, the pressing force with a variable elastic body, can be adjusted pressure by adjusting the amount of strain of the elastic body, an oil-filled transformer proper pressure can be set according to the capacity of the vessel. 【0025】請求項3に記載の発明によれば、補助加熱手段に、発熱体と、油入変圧器の負荷電流を入力として発熱体の加熱源となる変流器と、負荷電流に基づいて発熱体が発生する発熱量を調整する発熱調整器とを備えたので、負荷電流に対応した発熱量の変化を模擬でき、この発熱量の変化が診断片の劣化状態の模擬に寄与する。 According to the invention described in claim 3, the auxiliary heating means, a heating element, a current transformer which is a heating source of the heating element load current oil-filled transformers as input, based on the load current since the heating element has a heating regulator for regulating the amount of heat generated can simulate a change in the heating value corresponding to the load current, change of the calorific value contributes to simulate the deteriorated state of the diagnostic strip. 【0026】請求項4に記載の発明によれば、収容室とタンク内とを連通するパイプと、このパイプに絶縁油を循環させるポンプとを更に設けたので、絶縁油がパイプを通じて収容室とタンク内とを循環して、収容室内の診断片は巻線の紙巻き絶縁電線と同等の絶縁油環境となり絶縁油中の水分及び酸素等が劣化状態の模擬に寄与する。 According to the invention described in claim 4, and the pipe for communicating the accommodating chamber and the tank, so further provided a pump for circulating the insulating oil into the pipe, a housing chamber in insulating oil through a pipe circulating the tank, diagnostic piece accommodating chamber moisture and oxygen or the like of the insulating oil becomes cigarettes insulated wire equivalent insulating oil environment windings contributes to simulate the deterioration state. 【0027】請求項5に記載の発明によれば、収容室とタンク内とを連通するパイプと、このパイプに絶縁油の流動を遮断できるバルブとを更に設けたので、バルブを閉鎖位置に切り換えると、絶縁油の流動を遮断して収容室とタンク内とを隔離することができ、絶縁油が噴出することなく診断片の出し入れが行える。 According to the invention described in claim 5, and a pipe for communicating the accommodating chamber and the tank, so further provided a valve capable of blocking the flow of insulating oil into the pipe, switch the valve to the closed position If, blocking the flow of insulating oil can isolate the receiving chamber and the tank, it can be performed out of the diagnostic strips without insulating oil is ejected.

【図面の簡単な説明】 【図1】本発明に係る油入変圧器の劣化診断装置を設けた油入変圧器の構成図である。 Is a block diagram of BRIEF DESCRIPTION OF THE DRAWINGS [Figure 1] The present invention oil-filled transformer in which a deterioration diagnosis device for an oil-filled transformer in accordance with. 【図2】本発明に係る油入変圧器の劣化診断装置の一実施形態を示す構成図である。 Is a block diagram showing an embodiment of the oil-filled transformers deterioration diagnostic apparatus according to the present invention; FIG. 【図3】本発明に係る油入変圧器の劣化診断装置の加圧手段の組立構造を示す分解斜視図である。 3 is an exploded perspective view showing the assembly structure of the pressurizing means of the deterioration diagnosis device for an oil-filled transformer according to the present invention. 【符号の説明】 1 油入変圧器1a 二次ブッシング2 タンク3 巻線3a 紙巻き絶縁電線4 絶縁油9 パイプ10 劣化診断装置11 診断片11a 絶縁紙11b 導体12 加圧手段12a 台板12b 軸12c 押さえ板12d ナット12e 弾性体12f 孔12g 歪みゲージ12gA 測定端子12h 雄ネジ13 収容室13a 取出口蓋13b 取出口13c 連結棒14 ポンプ15 バルブ16 補助加熱手段16a 発熱体16b 発熱調整器16c 変流器 [EXPLANATION OF SYMBOLS] 1 oil-filled transformer 1a secondary bushing 2 tank 3 winding 3a cigarette insulated wire 4 insulating oil 9 pipe 10 deterioration diagnosis device 11 diagnostic piece 11a insulating paper 11b conductor 12 pressurizing means 12a bedplate 12b axis 12c pressing plate 12d nut 12e elastic body 12f hole 12g strain gauge 12gA measuring terminal 12h male screw 13 accommodating chamber 13a extraction palate 13b outlet 13c connecting rod 14 pump 15 valve 16 auxiliary heating means 16a heating element 16b heating regulator 16c current transformer

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 油入変圧器の巻線に使用している紙巻き絶縁電線と同種の紙巻き絶縁電線から形成された診断片と、前記油入変圧器のタンク内の上部に設けられ前記診断片を前記巻線が受ける圧力で加圧した状態でかつ絶縁油に浸漬した状態で加圧手段と共に収容する収容室と、 And [claimed 1 Oil immersed transformer diagnosis pieces formed from cigarette insulated wire cigarette insulated wire of the same kind which are used in the winding of the upper part of the tank of the oil immersed transformer a housing chamber for housing with pressure means in a state in which the diagnosis pieces provided immersed in state a and the insulating oil was pressurized with a pressure which the winding is subjected,
    前記収容室内の絶縁油の温度を前記巻線の最高温度と同じ又はそれに近い温度まで更に加熱する補助加熱手段とを備えた油入変圧器の劣化診断装置。 The maximum temperature the same or deterioration diagnosis device for an oil-filled transformer with an auxiliary heating means for further heating to a temperature close to that of the temperature of the insulating oil in the housing chamber the winding. 【請求項2】 加圧手段は、加圧力が調整可能な弾性体を備えた請求項1に記載の油入変圧器の劣化診断装置。 Wherein pressure means is oil-filled transformers deterioration diagnostic apparatus according to claim 1 in which the pressure with adjustable elastic body. 【請求項3】 補助加熱手段は、発熱体と、油入変圧器の負荷電流を入力として前記発熱体の加熱源となる変流器と、前記負荷電流に基づいて前記発熱体が発生する発熱量を調整する発熱調整器とを備えた請求項1又は請求項2に記載の油入変圧器の劣化診断装置。 Wherein auxiliary heating means includes a heating element, a current transformer which is a heating source of the heating element of the load current of the oil-filled transformer as an input, the heating element on the basis of the load current is generated heating oil-filled transformers deterioration diagnostic apparatus according to claim 1 or claim 2 comprising a heating regulator for regulating the amount. 【請求項4】 収容室とタンク内とを連通するパイプと、前記パイプに絶縁油を循環させるポンプとを更に設けた請求項1又は請求項2又は請求項3に記載の油入変圧器の劣化診断装置。 4. A receiving chamber and the pipe for communicating the tank, the pipe of claim 1 or claim 2 or claim 3 further provided a pump for circulating the insulating oil oil-filled transformers deterioration diagnostic device. 【請求項5】 収容室とタンク内とを連通するパイプと、前記パイプに絶縁油の流動を遮断できるバルブとを更に設けた請求項1又は請求項2又は請求項3又は請求項4に記載の油入変圧器の劣化診断装置。 5. A housing chamber and the pipe for communicating the tank, according to claim 1 or claim 2 or claim 3 or claim 4 further provided with a valve capable of blocking the flow of insulating oil into the pipe the oil-filled transformers deterioration diagnosis device.
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WO2008004107A2 (en) * 2006-07-03 2008-01-10 S.E.A. Societá Elettromeccanica Arzignanese S.P.A. Power reactor for energy transfer
WO2009054156A1 (en) * 2007-10-26 2009-04-30 Mitsubishi Electric Corporation Method of inspecting electrical insulating oil in oil-filled electrical apparatus
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WO2008004107A2 (en) * 2006-07-03 2008-01-10 S.E.A. Societá Elettromeccanica Arzignanese S.P.A. Power reactor for energy transfer
WO2008004107A3 (en) * 2006-07-03 2008-02-28 Claudio Ceretta Power reactor for energy transfer
RU2447528C2 (en) * 2006-07-03 2012-04-10 С.Э.А. Сочиета Элеттромекканика Арциньянезе С.П.А. Heavy-duty reactor for power transmission
US8228153B2 (en) 2006-07-03 2012-07-24 Societa' Elettromeccanica Arzignanese, S.P.A. Power reactor for energy transfer
WO2009054156A1 (en) * 2007-10-26 2009-04-30 Mitsubishi Electric Corporation Method of inspecting electrical insulating oil in oil-filled electrical apparatus
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US20170082588A1 (en) * 2015-09-17 2017-03-23 King Fahd University Of Petroleum And Minerals Device to measure the corrosive sulfur species formation rate in power transformers and a method of using the same
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