JP7473046B1 - 変流器の健全性診断方法 - Google Patents
変流器の健全性診断方法 Download PDFInfo
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- JP7473046B1 JP7473046B1 JP2023065019A JP2023065019A JP7473046B1 JP 7473046 B1 JP7473046 B1 JP 7473046B1 JP 2023065019 A JP2023065019 A JP 2023065019A JP 2023065019 A JP2023065019 A JP 2023065019A JP 7473046 B1 JP7473046 B1 JP 7473046B1
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- 238000002405 diagnostic procedure Methods 0.000 title description 2
- 238000005259 measurement Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000005856 abnormality Effects 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000012937 correction Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 238000003745 diagnosis Methods 0.000 abstract description 8
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 22
- 230000015556 catabolic process Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 229910052573 porcelain Inorganic materials 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 229910001219 R-phase Inorganic materials 0.000 description 2
- 230000018199 S phase Effects 0.000 description 2
- 238000009421 internal insulation Methods 0.000 description 2
- 238000012886 linear function Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
Description
2,2R,2S,2T 一次端子
3,3R,3S,3T 中性子水分計
4 診断装置
5 水
11,11R,11S,11T 上部タンク
12,12R,12S,12T 下部タンク
13,13R,13S,13T 絶縁碍子管
14 絶縁油
15 絶縁紙
21 一次巻線
22 鉄心
23 二次巻線
24 二次端子
25 アース
31 線源
61 高速中性子
62 水素原子
63 熱中性子
100 電力会社
101 工場負荷
102 断路器
103 遮断器
104 変圧器
105 変流設備
Claims (2)
- 鉄心と巻線とが絶縁油に浸漬されてタンクの内部に収納された変流器の健全性診断方法であって、
3相の配送電線にそれぞれ接続された第1の変流器と第2の変流器と第3の変流器とのそれぞれの前記タンクの外側面に対向させて設けられた第1の中性子水分計と第2の中性子水分計と第3の中性子水分計とによって、前記第1の変流器の内部の水分量と前記第2の変流器の内部の水分量と前記第3の変流器の内部の水分量とを測定し、
前記第1の変流器の内部の水分量を示す第1の測定値と、前記第2の変流器の内部の水分量を示す第2の測定値と、前記第3の変流器の内部の水分量を示す第3の測定値とを、各タンクの外側面と各中性子水分計との間の距離に応じて予め設定された減衰率で補正し、
補正後の前記第1の測定値と補正後の前記第2の測定値と補正後の前記第3の測定値とが、この順に水分量が少なくなることを示す値である場合に、
補正後の前記第1の測定値と補正後の前記第2の測定値との平均値と、補正後の前記第3の測定値との差が、予め設定された閾値を超える場合に、補正後の前記第3の測定値に対応する前記変流器に少なくとも異常が発生している可能性があることを特定することを特徴とする変流器の健全性診断方法。 - 前記タンクには前記変流器の下部を構成する下部タンクが含まれており、
前記中性子水分計は前記下部タンクの外側面に対向させて設けられることを特徴とする請求項1に記載の変流器の健全性診断方法。
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Citations (1)
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JP5322735B2 (ja) | 2009-03-31 | 2013-10-23 | 株式会社吉野工業所 | 注出キャップ |
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JP5322735B2 (ja) | 2009-03-31 | 2013-10-23 | 株式会社吉野工業所 | 注出キャップ |
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