JP2008053334A - 計器用変圧器とこれを用いた電気設備、高圧負荷開閉器及び計器用変圧変流器 - Google Patents
計器用変圧器とこれを用いた電気設備、高圧負荷開閉器及び計器用変圧変流器 Download PDFInfo
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- JP2008053334A JP2008053334A JP2006226170A JP2006226170A JP2008053334A JP 2008053334 A JP2008053334 A JP 2008053334A JP 2006226170 A JP2006226170 A JP 2006226170A JP 2006226170 A JP2006226170 A JP 2006226170A JP 2008053334 A JP2008053334 A JP 2008053334A
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Abstract
【解決手段】 A相、B相およびC相の受電ケーブル30a〜30cからなる三相交流電路30に気中負荷開閉器10を設置し、その気中負荷開閉器10に内蔵された計器用変圧器20の一次巻線m10にコンデンサ50を並列に接続する。計器用変圧器20の一次巻線m10にコンデンサ50を並列に接続したことにより、計器用変圧器20の誘導性インピーダンスと受電ケーブル30cの容量性インピーダンスからなる並列合成インピーダンスを容量性インピーダンスに変更して鉄共振状態になることを防止する。
【選択図】 図1
Description
30 三相交流電路
50,51 コンデンサ
53 保護素子(抵抗)
m10 一次巻線
m20 二次巻線
Claims (5)
- 所定の静電容量を有するコンデンサを一次側巻線あるいは二次側巻線のいずれか一方に並列に接続したことを特徴とする計器用変圧器。
- 高圧負荷開閉器に内蔵されている請求項1に記載の計器用変圧器。
- 計器用変圧器が設置され、かつ、所定の静電容量を有する三相用コンデンサを、前記計器用変圧器の一次側巻線に接続されている電路に接続したことを特徴とする電気設備。
- 計器用変圧器を内蔵し、かつ、所定の静電容量を有する三相用コンデンサを、前記計器用変圧器の一次側巻線に接続されている電路に接続したことを特徴とする高圧負荷開閉器。
- 計器用変圧器を内蔵し、かつ、所定の静電容量を有する三相用コンデンサを、前記計器用変圧器の一次側巻線に接続されている電路に接続したことを特徴とする計器用変圧変流器。
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JP2006226170A JP4615490B2 (ja) | 2006-08-23 | 2006-08-23 | 計器用変圧器とこれを用いた電気設備、高圧負荷開閉器及び計器用変圧変流器 |
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JP2006226170A JP4615490B2 (ja) | 2006-08-23 | 2006-08-23 | 計器用変圧器とこれを用いた電気設備、高圧負荷開閉器及び計器用変圧変流器 |
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JP2008053334A true JP2008053334A (ja) | 2008-03-06 |
JP4615490B2 JP4615490B2 (ja) | 2011-01-19 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102360899A (zh) * | 2011-08-13 | 2012-02-22 | 陈劲游 | 一种电子式组合互感器防铁磁谐振自供电装置 |
JP2014017938A (ja) * | 2012-07-06 | 2014-01-30 | Mitsubishi Electric Corp | 鉄共振防止装置とこれを用いた受変電設備 |
KR20190038046A (ko) * | 2017-09-29 | 2019-04-08 | 한국서부발전 주식회사 | 철공진을 방지하기 위한 전력 시스템 |
CN115792781A (zh) * | 2022-12-28 | 2023-03-14 | Abb瑞士股份有限公司 | 监控装置、电力设备及监测电压互感器的方法 |
US11824348B1 (en) * | 2022-09-01 | 2023-11-21 | Qujing Power Supply Bureau of Yunnan Power Grid Co., Ltd | PT ferromagnetic resonance elimination method implemented by actively inputting resistance through electronic load |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5370355A (en) * | 1976-12-06 | 1978-06-22 | Hitachi Ltd | Power source apparatus |
JPS59165915A (ja) * | 1983-03-09 | 1984-09-19 | 株式会社日立製作所 | 零相電圧検出装置 |
JPS6099837U (ja) * | 1983-12-13 | 1985-07-08 | 三菱電機株式会社 | 接地形計器用変圧器の鉄共振抑制回路 |
JPH0378423A (ja) * | 1989-08-22 | 1991-04-03 | Toshiba Corp | 電力系統回路 |
JPH0513033U (ja) * | 1991-07-26 | 1993-02-19 | 日新電機株式会社 | センサ付開閉器の分圧装置 |
JPH09260167A (ja) * | 1996-03-22 | 1997-10-03 | Nissin Electric Co Ltd | コンデンサ形計器用変圧器 |
-
2006
- 2006-08-23 JP JP2006226170A patent/JP4615490B2/ja not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5370355A (en) * | 1976-12-06 | 1978-06-22 | Hitachi Ltd | Power source apparatus |
JPS59165915A (ja) * | 1983-03-09 | 1984-09-19 | 株式会社日立製作所 | 零相電圧検出装置 |
JPS6099837U (ja) * | 1983-12-13 | 1985-07-08 | 三菱電機株式会社 | 接地形計器用変圧器の鉄共振抑制回路 |
JPH0378423A (ja) * | 1989-08-22 | 1991-04-03 | Toshiba Corp | 電力系統回路 |
JPH0513033U (ja) * | 1991-07-26 | 1993-02-19 | 日新電機株式会社 | センサ付開閉器の分圧装置 |
JPH09260167A (ja) * | 1996-03-22 | 1997-10-03 | Nissin Electric Co Ltd | コンデンサ形計器用変圧器 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102360899A (zh) * | 2011-08-13 | 2012-02-22 | 陈劲游 | 一种电子式组合互感器防铁磁谐振自供电装置 |
JP2014017938A (ja) * | 2012-07-06 | 2014-01-30 | Mitsubishi Electric Corp | 鉄共振防止装置とこれを用いた受変電設備 |
KR20190038046A (ko) * | 2017-09-29 | 2019-04-08 | 한국서부발전 주식회사 | 철공진을 방지하기 위한 전력 시스템 |
KR101978347B1 (ko) | 2017-09-29 | 2019-05-15 | 한국서부발전 주식회사 | 철공진을 방지하기 위한 전력 시스템 |
US11824348B1 (en) * | 2022-09-01 | 2023-11-21 | Qujing Power Supply Bureau of Yunnan Power Grid Co., Ltd | PT ferromagnetic resonance elimination method implemented by actively inputting resistance through electronic load |
CN115792781A (zh) * | 2022-12-28 | 2023-03-14 | Abb瑞士股份有限公司 | 监控装置、电力设备及监测电压互感器的方法 |
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