JP3325220B2 - Life diagnosis method for gas insulated electrical equipment - Google Patents
Life diagnosis method for gas insulated electrical equipmentInfo
- Publication number
- JP3325220B2 JP3325220B2 JP04958998A JP4958998A JP3325220B2 JP 3325220 B2 JP3325220 B2 JP 3325220B2 JP 04958998 A JP04958998 A JP 04958998A JP 4958998 A JP4958998 A JP 4958998A JP 3325220 B2 JP3325220 B2 JP 3325220B2
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- Japan
- Prior art keywords
- gas
- insulated
- insulator
- life
- electrical equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】この発明は、ガス絶縁電気機
器の寿命診断方法に関するものであり、さらに詳しく
は、ガス絶縁変圧器のようなガス絶縁電気機器の運転を
停止させることなく、その寿命診断を可能にする方法を
提供すること、さらにはガス絶縁電気機器の寿命を充分
な感度で、精度良く分析することのできるガス絶縁電気
機器の寿命診断方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for diagnosing the life of a gas-insulated electric device, and more particularly to a method for diagnosing the life of a gas-insulated electric device such as a gas-insulated transformer without stopping the operation. And a method for diagnosing the life of a gas-insulated electrical device capable of accurately analyzing the life of the gas-insulated electrical device with sufficient sensitivity.
【０００２】[0002]
【従来の技術】ガス絶縁電気機器としては、ガス絶縁変
圧器やガス絶縁リアクトルなどがある。ガス絶縁電気機
器に充填されるガスとしては、ＳＦ6ガスが一般的であ
る。例えば、ガス絶縁変圧器においては、巻線に薄葉の
絶縁物が巻回されており、運転中に巻線の温度が上昇す
るので、この熱によって絶縁物が経年的に劣化し、経年
劣化生成成分が発生する。2. Description of the Related Art Gas-insulated electric equipment includes a gas-insulated transformer and a gas-insulated reactor. SF 6 gas is generally used as the gas charged in the gas insulated electric equipment. For example, in a gas-insulated transformer, a thin-leaf insulator is wound around the winding, and the temperature of the winding rises during operation. Ingredients are generated.
【０００３】このような考え方に基づき、油入変圧器に
おいては、ＣＯ、ＣＯ2、フルフラールなどが発生する
ので、これらの成分を分析し、その発生量から油入変圧
器の寿命を診断する技術が開示されている。例えば、特
開平８−０３１６５３号公報には、油入電気機器の絶縁
油を採取し、そこに含まれるＣＯ、ＣＯ2、フルフラー
ルなどを分析する手段を含む油入電気機器の寿命推定方
法が開示されている。また特開平７−９４３３４号公報
には、油入変圧器の絶縁油中の溶存ガスを測定し、予め
求めておいた溶存ガス量の変動範囲から油入変圧器の劣
化を診断するシステムが開示されている。[0003] Based on such a concept, in an oil-immersed transformer, CO, CO 2 , furfural and the like are generated. Therefore, a technique for analyzing these components and diagnosing the life of the oil-immersed transformer based on the amount of generated CO, CO 2 and furfural. Is disclosed. For example, Japanese Patent Application Laid-Open No. H08-031653 discloses a method for estimating the life of an oil-filled electrical device including means for collecting insulating oil from the oil-filled electrical device and analyzing CO, CO 2 , furfural and the like contained therein. Have been. Japanese Patent Application Laid-Open No. 7-94334 discloses a system which measures dissolved gas in insulating oil of an oil-immersed transformer and diagnoses deterioration of the oil-immersed transformer from a previously determined variation range of the dissolved gas amount. Have been.
【０００４】これらの従来技術は、油入変圧器の運転を
停止することなく、寿命診断が行える特長を持ってい
る。[0004] These prior arts have the feature that the life can be diagnosed without stopping the operation of the oil-filled transformer.
【０００５】しかし一方、ガス絶縁電気機器、例えばガ
ス絶縁変圧器においては、経年劣化生成成分による寿命
診断技術が確立されていない。例えば従来のガス絶縁電
気機器の寿命診断方法を述べると、図５に示すように、
ガス絶縁変圧器を停止して、充填されているガスを抜き
取り、タンク内部に入って内部の絶縁物（例えばポリエ
チレンテレフタレートフィルム）を採取し、その絶縁物
の機械的強度を測定して、前記絶縁物の限界強度と分析
時点の機械的強度との比較からガス絶縁電気機器の寿命
診断を行なっている。[0005] On the other hand, in gas-insulated electrical equipment, for example, in gas-insulated transformers, a technology for diagnosing the life of components due to aging is not established. For example, a conventional method for diagnosing the life of a gas-insulated electric device will be described. As shown in FIG.
Stop the gas insulated transformer, remove the filled gas, enter the tank, sample the insulator (eg, polyethylene terephthalate film), measure the mechanical strength of the insulator, and measure the insulation. The service life of gas insulated electrical equipment is diagnosed based on a comparison between the critical strength of the product and the mechanical strength at the time of analysis.
【０００６】変圧器の寿命は、一般に３０年程度と言わ
れている。現在、ガス絶縁変圧器は、フィールドでの使
用実績が１０年を越えるものがでてきているので、寿命
を評価する技術の開発が望まれている。現状の寿命診断
技術は、上記のように、ガス絶縁変圧器を停止させて絶
縁物を採取して測定・診断を行なうため、変圧器運用上
問題がある。[0006] The life of a transformer is generally said to be about 30 years. At present, some gas-insulated transformers have been used in the field for more than 10 years, and therefore, there is a demand for the development of a technology for evaluating the service life. As described above, the current life diagnosis technology has a problem in transformer operation because the gas-insulated transformer is stopped and the insulator is sampled for measurement and diagnosis.
【０００７】[0007]
【発明が解決しようとする課題】したがって本発明の目
的は、ガス絶縁変圧器のようなガス絶縁電気機器の運転
を停止させることなく、その寿命診断を可能にする方法
を提供すること、さらにはガス絶縁電気機器の寿命を充
分な感度で、精度良く分析することのできるガス絶縁電
気機器の寿命診断方法の提供にある。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method for enabling the diagnosis of the life of a gas-insulated electrical device, such as a gas-insulated transformer, without having to shut down the operation. An object of the present invention is to provide a method for diagnosing the life of a gas-insulated electric device, which can analyze the life of the gas-insulated electric device with sufficient sensitivity and high accuracy.
【０００８】[0008]
【課題を解決するための手段】請求項１の発明は、ガス
絶縁電気機器内に充填されているガスを採取し、前記ガ
ス中に含有される絶縁物に起因した経年劣化生成成分を
分析し、予め求めておいた前記経年劣化生成成分の濃度
と前記絶縁物の機械的強度との関係から、前記絶縁物の
劣化度を推定することを特徴とするガス絶縁電気機器の
寿命診断方法において、前記絶縁物がポリエチレンテレ
フタレートを主成分とする絶縁物であり、かつ前記経年
劣化生成成分がクロトンアルデヒドであるとともに、前
記ガス絶縁電気機器内のガスを吸着剤に導き、クロトン
アルデヒドを吸着・濃縮させた後、前記吸着剤から熱脱
離させて前記クロトンアルデヒドを分析することを特徴
とするガス絶縁電気機器の寿命診断方法である。According to the first aspect of the present invention, a gas filled in a gas-insulated electric device is sampled, and an aged deterioration component caused by an insulator contained in the gas is analyzed. A method for diagnosing the life of a gas-insulated electrical device, comprising estimating a degree of deterioration of the insulator from a relationship between the concentration of the aging degradation component and the mechanical strength of the insulator determined in advance , The insulator is polyethylene
An insulator containing phthalate as a main component, and
The deterioration-producing component is crotonaldehyde,
The gas in the gas-insulated electrical equipment is led to the adsorbent and
After adsorbing and concentrating the aldehyde, it is thermally desorbed from the adsorbent.
Separating and analyzing the crotonaldehyde
This is a method for diagnosing the life of gas-insulated electrical equipment .
【０００９】[0009]
【発明の実施の形態】実施の形態１．一般に、ガス絶縁
電気機器、例えばガス絶縁変圧器の巻線絶縁には、ポリ
エチレンテレフタレート（以下、ＰＥＴという）フィル
ムが使用されている。このフィルムが加熱されると、炭
化水素、アルデヒド、ケトン、アルコール、フランなど
の経年劣化生成成分が生成する。このような成分がＰＥ
Ｔフィルムから生成することを実験で調べた。この加熱
劣化実験の条件を表１に示す。実験はＰＥＴフィルムと
ＳＦ6ガスとを同一の試験容器に充填し、これを加熱し
た後、試験容器内のＳＦ6ガスを採取して分析した。Ｓ
Ｆ6ガス中の成分分析にはガスクロマトグラフおよびガ
スクロマトグラフ質量分析器を使用した。分析で検出さ
れた成分を表２に示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Generally, a polyethylene terephthalate (hereinafter, referred to as PET) film is used for winding insulation of a gas-insulated electric device, for example, a gas-insulated transformer. When this film is heated, aging components such as hydrocarbons, aldehydes, ketones, alcohols and furans are generated. Such a component is PE
The production from T-film was investigated experimentally. Table 1 shows the conditions of this heat deterioration experiment. In the experiment, the same test container was filled with a PET film and SF 6 gas, and after heating, the SF 6 gas in the test container was sampled and analyzed. S
A gas chromatograph and a gas chromatograph mass spectrometer were used for component analysis in the F 6 gas. Table 2 shows the components detected by the analysis.
【００１０】[0010]
【表１】 [Table 1]
【００１１】[0011]
【表２】 [Table 2]
【００１２】図１および図２は、それぞれ検出されたＣ
ＯおよびＣＯ2について、加熱日数と発生量との関係を
示す図である。図１および図２によれば、ＰＥＴフィル
ムは、加熱によってＣＯおよびＣＯ2を発生し、加熱日
数と共に発生量が増加することが分かる。このことか
ら、前記経年劣化生成成分についても同様な挙動を示す
ものと考えられる。実際のガス絶縁変圧器においても、
表２に示す成分は経年的に生成すると考えられる。FIG. 1 and FIG. 2 show the detected C
For O and CO 2, it is a diagram showing the relationship between the generation amount and heating days. 1 and 2 that the PET film generates CO and CO 2 by heating, and the amount of generation increases with the number of heating days. From this, it is considered that the above-mentioned aging component has a similar behavior. Even in actual gas-insulated transformers,
The components shown in Table 2 are believed to form over time.
【００１３】一方、油入変圧器の巻線絶縁に使用されて
いる絶縁紙については、経年劣化生成成分と絶縁物の機
械的強度との間に相関関係があることが報告されてい
る。例えば、絶縁紙の経年劣化生成成分であるＣＯおよ
びＣＯ2の発生量と絶縁紙の機械的強度との間に相関関
係があることが報告されている（電学論５６−Ａ５：
「経時生成ガスによる絶縁紙の劣化診断」、昭５６−１
２）。このようなことから、ＰＥＴフィルムについて
も、劣化に起因して発生したＰＥＴフィルムの経年劣化
生成成分の発生量とＰＥＴフィルムの機械的強度との間
には相関関係があると考えてよい。したがって、ＳＦ6
ガス中の経年劣化生成成分を分析し、予め求めておいた
ＰＥＴフィルムに起因した経年劣化生成成分の発生量と
機械的強度との関係からＰＥＴフィルムの機械的強度を
求め、ＰＥＴフィルムの限界強度との比較からガス絶縁
変圧器の寿命診断を行なうことができる。[0013] On the other hand, it has been reported that there is a correlation between the aging component and the mechanical strength of the insulator for insulating paper used for winding insulation of an oil-immersed transformer. For example, it has been reported that there is a correlation between the generation amounts of CO and CO 2 , which are aging degradation components of insulating paper, and the mechanical strength of insulating paper (Electronics 56-A5:
"Determination of Degradation of Insulating Paper by Gas Generated Over Time"
2). From such a thing, it may be considered that there is a correlation between the amount of the aging component of the PET film generated due to the deterioration and the mechanical strength of the PET film. Therefore, SF 6
Analyze the aging components in the gas, determine the mechanical strength of the PET film from the relationship between the amount of the aging components generated by the PET film and the mechanical strength, and determine the mechanical strength of the PET film. From the comparison with the above, the life diagnosis of the gas insulated transformer can be performed.
【００１４】ガス絶縁変圧器には、プレスボードなどの
セルロース系絶縁材料も使用されている。表２に示すＰ
ＥＴフィルムの経年劣化生成成分のほとんどは、セルロ
ース系絶縁材料からも生成する可能性が高い。しかし、
クロトンアルデヒド（化学式：ＣＨ3ＣＨＣＨＣＨＯ）
は、絶縁紙を前述と同じ条件で実験して生成しないこと
を確認している。よって、クロトンアルデヒドは、セル
ロース系絶縁材料からは発生せず、ＰＥＴフィルム固有
の経年劣化生成成分と考えられる。以上のことから、ク
ロトンアルデヒドを分析の対象とすれば、ガス絶縁変圧
器の寿命を支配する巻線絶縁物であるＰＥＴフィルムの
劣化度を、他の絶縁物からの経年劣化生成成分に影響さ
れることなく、正しく評価することができるので、ガス
絶縁変圧器の寿命を精度良く診断できる。Cellulose-based insulating materials such as press boards are also used in gas-insulated transformers. P shown in Table 2
Most of the aging film-forming components of the ET film are likely to be formed from the cellulosic insulating material. But,
Crotonaldehyde (chemical formula: CH 3 CHCHO)
Confirms that no insulating paper is produced by experiments under the same conditions as described above. Therefore, crotonaldehyde is not generated from the cellulosic insulating material, and is considered to be an aging degradation component unique to the PET film. From the above, if crotonaldehyde is analyzed, the degree of deterioration of the PET film, which is the winding insulator that governs the life of the gas-insulated transformer, is affected by the aging degradation components from other insulators. Since the evaluation can be performed correctly without the need, the life of the gas insulated transformer can be accurately diagnosed.
【００１５】図３は、本発明の方法を説明するためのフ
ローチャートである。運転中のガス絶縁電気機器からガ
スを採取し、絶縁物に起因した経年劣化生成成分を分析
する。図３の態様によれば、絶縁物はＰＥＴフィルムで
あり、経年劣化生成成分はクロトンアルデヒドである。
そして予め求めておいたクロトンアルデヒドの濃度とＰ
ＥＴフィルムの機械的強度との関係（例えば関数を導き
出し検量線化することができる）から、ＰＥＴフィルム
の劣化度を推定し、ＰＥＴフィルムの限界強度と分析時
点の機械的強度との比較からガス絶縁電気機器の寿命を
診断することができる。FIG. 3 is a flowchart for explaining the method of the present invention. Gas is sampled from gas-insulated electrical equipment during operation, and aging degradation components due to insulators are analyzed. According to the embodiment of FIG. 3, the insulator is a PET film, and the aging component is crotonaldehyde.
And the concentration of crotonaldehyde and P
The degree of degradation of the PET film is estimated from the relationship with the mechanical strength of the ET film (for example, a function can be derived and calibrated), and the gas strength can be estimated by comparing the limit strength of the PET film with the mechanical strength at the time of analysis. The life of the insulated electric device can be diagnosed.
【００１６】この実施の形態１．によれば、ガス絶縁電
気機器内に充填されているガス、例えばＳＦ6ガス中に
存在する絶縁物の経年劣化生成成分を分析して、その成
分の濃度から絶縁物の劣化度を判定するようにしたの
で、ガス絶縁電気機器を停止させることなく、ガス絶縁
電気機器の寿命を診断することができる。とくに本発明
では、対象となるガス絶縁電気機器がガス絶縁変圧器で
あり、絶縁物がＰＥＴフィルムであり、また経年劣化生
成成分をクロトンアルデヒドに特定したときに、ガス絶
縁電気機器を停止させることなく、ガス絶縁電気機器の
寿命を診断することができるばかりか、ガス絶縁電気機
器の寿命を充分な感度で、精度良く分析することが可能
となる。Embodiment 1 According to the present invention, a gas filled in a gas-insulated electric device, for example, an aging component of an insulator present in SF 6 gas is analyzed, and the degree of deterioration of the insulator is determined from the concentration of the component. Therefore, the life of the gas-insulated electrical device can be diagnosed without stopping the gas-insulated electrical device. In particular, in the present invention, when the target gas-insulated electrical equipment is a gas-insulated transformer, the insulator is a PET film, and the aging component is specified as crotonaldehyde, the gas-insulated electrical equipment is stopped. In addition, not only can the life of the gas-insulated electrical equipment be diagnosed, but also the life of the gas-insulated electrical equipment can be analyzed with sufficient sensitivity and accuracy.
【００１７】また、上記はＳＦ6ガスを充填したガス絶
縁電気機器について記載したが、電気絶縁媒体として利
用できるパーフルオロカーボン（例えば、ＣＦ4、Ｃ2Ｆ
6、Ｃ3Ｆ8）、窒素ガス、二酸化炭素や、前記ガスの複
数を混合して充填したガス絶縁電気機器でも同様の効果
が得られる。Although the above description has been given of a gas-insulated electric device filled with SF 6 gas, a perfluorocarbon (for example, CF 4 , C 2 F) that can be used as an electric insulating medium is used.
6 , C 3 F 8 ), nitrogen gas, carbon dioxide, or a gas-insulated electric device in which a plurality of the above gases are mixed and filled, the same effect can be obtained.
【００１８】実施の形態２．図４は、本発明の別の方法
を説明するためのフローチャートである。すなわち、上
記の実施の形態１．において、ガス絶縁電気機器内に充
填されているガスを採取する際、ＰＥＴフィルムに起因
した経年劣化生成成分であるクロトンアルデヒドを吸着
する吸着剤を用い、吸着剤にクロトンアルデヒドを吸着
させて濃縮した後、吸着剤を加熱し、吸着されているク
ロトンアルデヒドを熱脱離させて分析し、予め求めてお
いたＰＥＴフィルムに係る経年劣化生成成分の発生量と
機械的強度との関係からＰＥＴフィルムの機械的強度を
求め、ＰＥＴフィルムの限界強度との比較からガス絶縁
変圧器の寿命診断を行なうことができる。Embodiment 2 FIG. FIG. 4 is a flowchart for explaining another method of the present invention. That is, the first embodiment. At the time of collecting the gas filled in the gas-insulated electrical equipment, using an adsorbent that adsorbs crotonaldehyde, which is a component of aging caused by the PET film, was adsorbed with crotonaldehyde and concentrated. Thereafter, the adsorbent is heated, the adsorbed crotonaldehyde is thermally desorbed and analyzed, and the PET film is determined based on the relationship between the amount of the aged deterioration-generating component of the PET film and the mechanical strength determined in advance. The mechanical strength is determined, and the life of the gas insulated transformer can be diagnosed by comparison with the limit strength of the PET film.
【００１９】この実施の形態２．によれば、クロトンア
ルデヒドを吸着する吸着剤を挿入したことにより、微量
のクロトンアルデヒドを濃縮して分析することができる
ので、充分な感度で、精度良く分析ができる。Embodiment 2 According to the method, since a trace amount of crotonaldehyde can be concentrated and analyzed by inserting an adsorbent that adsorbs crotonaldehyde, analysis can be performed with sufficient sensitivity and accuracy.
【００２０】[0020]
【発明の効果】請求項１の発明によれば、ガス絶縁電気
機器内に充填されているガスを採取し、前記ガス中に含
有される絶縁物に起因した経年劣化生成成分を分析し、
予め求めておいた前記経年劣化生成成分の濃度と前記絶
縁物の機械的強度との関係から、前記絶縁物の劣化度を
推定するので、ガス絶縁変圧器のようなガス絶縁電気機
器の運転を停止させることなく、その寿命診断を可能に
することができる。とくに、前記絶縁物をポリエチレン
テレフタレートを主成分とする絶縁物にし、かつ経年劣
化生成成分をクロトンアルデヒドに特定し、そしてガス
絶縁電気機器内のガスを吸着剤に導き、クロトンアルデ
ヒドを吸着・濃縮させた後、前記吸着剤から熱脱離させ
て前記クロトンアルデヒドを分析するので、微量の経年
劣化生成成分を濃縮して分析することができ、ガス絶縁
電気機器の寿命を充分な感度で、精度良く分析を行うこ
とができる。 According to the first aspect of the present invention, a gas filled in a gas-insulated electric device is sampled, and aged components generated by the insulator contained in the gas are analyzed.
Since the degree of deterioration of the insulator is estimated from the relationship between the concentration of the aging component generated in advance and the mechanical strength of the insulator, the operation of a gas-insulated electric device such as a gas-insulated transformer is performed. It is possible to make the life diagnosis without stopping the operation. In particular, the insulator is made of polyethylene
Made of terephthalate-based insulator and deteriorated over time
Crotonaldehyde to identify the product
The gas in the insulated electrical equipment is led to the adsorbent,
After adsorbing and condensing the hydride, it is thermally desorbed from the adsorbent.
Analysis of crotonaldehyde by means of
Concentrates and analyzes degradation components for gas insulation.
It is necessary to analyze the life of electrical equipment with sufficient sensitivity and accuracy.
Can be.
【００２１】[0021]
【００２２】[0022]
【００２３】[0023]
【図１】 ＰＥＴフィルムからのＣＯ2発生量と加熱日
数との関係を示す図である。FIG. 1 is a view showing the relationship between the amount of CO 2 generated from a PET film and the number of heating days.
【図２】 ＰＥＴフィルムからのＣＯ発生量と加熱日数
との関係を示す図である。FIG. 2 is a diagram showing the relationship between the amount of CO generated from a PET film and the number of heating days.
【図３】 本発明の方法を説明するためのフローチャー
トである。FIG. 3 is a flowchart illustrating the method of the present invention.
【図４】 本発明の別の方法を説明するためのフローチ
ャートである。FIG. 4 is a flowchart for explaining another method of the present invention.
【図５】 従来のガス絶縁電気機器の寿命診断方法を説
明するためのフローチャートである。FIG. 5 is a flowchart illustrating a conventional method for diagnosing the life of a gas-insulated electric device.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉川 徹 東京都千代田区丸の内二丁目２番３号 三菱電機株式会社内 (72)発明者 戸田 恒雄 愛知県名古屋市緑区大高町字北関山20番 地の１ 中部電力株式会社内 (72)発明者 鍵崎 秀樹 愛知県名古屋市緑区大高町字北関山20番 地の１ 中部電力株式会社内 (56)参考文献 特開 平４−181152（ＪＰ，Ａ) 特開 平９−72892（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 17/00 G01N 27/62 G01N 30/88 G01R 31/00 H01F 27/00 ＪＩＣＳＴファイル（ＪＯＩＳ)──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toru Yoshikawa 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation (72) Inventor Tsuneo Toda 20 Kita-Sekiyama, Odaka-cho, Midori-ku, Nagoya City, Aichi Prefecture No. 1 in Chubu Electric Power Co., Inc. (72) Inventor Hideki Kagizaki 20-1, Kita-Sekiyama, Odaka-cho, Midori-ku, Nagoya-shi, Aichi Pref. (JP, A) JP-A-9-72892 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G01N 17/00 G01N 27/62 G01N 30/88 G01R 31/00 H01F 27 / 00 JICST file (JOIS)
Claims (1)
スを採取し、前記ガス中に含有される絶縁物に起因した
経年劣化生成成分を分析し、予め求めておいた前記経年
劣化生成成分の濃度と前記絶縁物の機械的強度との関係
から、前記絶縁物の劣化度を推定することを特徴とする
ガス絶縁電気機器の寿命診断方法において、前記絶縁物
がポリエチレンテレフタレートを主成分とする絶縁物で
あり、かつ前記経年劣化生成成分がクロトンアルデヒド
であるとともに、前記ガス絶縁電気機器内のガスを吸着
剤に導き、クロトンアルデヒドを吸着・濃縮させた後、
前記吸着剤から熱脱離させて前記クロトンアルデヒドを
分析することを特徴とするガス絶縁電気機器の寿命診断
方法。1. A gas filled in a gas-insulated electric device is sampled, and an aging component generated by an insulator contained in the gas is analyzed, and the aging component determined in advance is obtained. A method for diagnosing the life of a gas-insulated electrical device , wherein the degree of deterioration of the insulator is estimated from a relationship between the concentration of the insulator and the mechanical strength of the insulator.
Is an insulator mainly composed of polyethylene terephthalate
And the aging component is crotonaldehyde
And adsorbs gas in the gas-insulated electrical equipment.
After adsorbing and concentrating crotonaldehyde,
Thermal desorption from the adsorbent to convert the crotonaldehyde
Life diagnosis of gas insulated electrical equipment characterized by analyzing
How .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04958998A JP3325220B2 (en) | 1998-03-02 | 1998-03-02 | Life diagnosis method for gas insulated electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04958998A JP3325220B2 (en) | 1998-03-02 | 1998-03-02 | Life diagnosis method for gas insulated electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11248773A JPH11248773A (en) | 1999-09-17 |
| JP3325220B2 true JP3325220B2 (en) | 2002-09-17 |
Family
ID=12835428
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04958998A Expired - Lifetime JP3325220B2 (en) | 1998-03-02 | 1998-03-02 | Life diagnosis method for gas insulated electrical equipment |
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| Country | Link |
|---|---|
| JP (1) | JP3325220B2 (en) |
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| CN112578036A (en) * | 2020-11-06 | 2021-03-30 | 武汉大学 | Method for judging compatibility of heptafluoroisobutyronitrile and ethylene propylene diene monomer material |
-
1998
- 1998-03-02 JP JP04958998A patent/JP3325220B2/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| JPH11248773A (en) | 1999-09-17 |
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