JP6065643B2 - 超電導変圧器の交流損失測定方法 - Google Patents
超電導変圧器の交流損失測定方法 Download PDFInfo
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- JP6065643B2 JP6065643B2 JP2013035771A JP2013035771A JP6065643B2 JP 6065643 B2 JP6065643 B2 JP 6065643B2 JP 2013035771 A JP2013035771 A JP 2013035771A JP 2013035771 A JP2013035771 A JP 2013035771A JP 6065643 B2 JP6065643 B2 JP 6065643B2
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- 238000000691 measurement method Methods 0.000 title claims description 13
- 238000004804 winding Methods 0.000 claims description 89
- 238000000034 method Methods 0.000 claims description 33
- 238000005259 measurement Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
スター結線した一次、二次いずれか一方側の巻線から選択した二つの相巻線の外部端子に単相電源、およびキャンセル法の測定回路を接続するとともに、前記相巻線に対応する他方側巻線の相巻線の外部端子間を短絡し、この状態で選択した二つの相巻線間に単相電力を供給して交流損失の測定を行うものとし、
好ましくは、スター結線した前記一次側巻線の各相をU,V,Wとして、外部から単相電力を供給する外部端子の組合せをU−V、V−W、W−Uの三通りにしてそれぞれ交流損失の測定を行い、その各測定値の合算値を除数2で除算して三相超電導変圧器全体としての交流損失を求めるようにする。
Q1+Q2+Q3=(Qu+Qv)+(Qv+Qw)+(Qv+Qw)
=2(Qu+Qv+Qw)・・・(1)式
となる。
5:シャント抵抗
6:キャンセルコイル
7:キャンセル回路
8:電圧測定器
9:変圧器鉄心
10:一次側巻線
11:二次側巻線
12:液体窒素(冷媒)
13:変圧器容器
14,15:外部リード
16:中性点接続用の渡り線
17:三相超電導変圧器の巻線
18:短絡線
U,V,W:一次側巻線の外部端子
u,v,w:二次側巻線の外部端子
O:中性点
Claims (3)
- 液体冷媒に浸漬して極低温容器に収容した超電導コイルよりなる一次側、二次側巻線の少なくとも一方の巻線をスター結線した三相超電導変圧器にキャンセル法を適用して交流損失を測定する超電導変圧器の交流損失測定方法において、
スター結線した一次、二次いずれか一方側の巻線から選択した二つの相巻線の外部端子に単相電源、およびキャンセル法の測定回路を接続するとともに、前記相巻線に対応する他方側巻線の相巻線の外部端子間を短絡し、この状態で選択した二つの相巻線間に単相電力を供給して交流損失の測定を行うことを特徴とする超電導変圧器の交流損失測定方法。 - 請求項1の交流損失測定方法において、スター結線した一次側巻線の各相をU,V,W相として、外部から単相電力を供給する外部端子の組合せをU−V相、V−W相、W−U相の三通りにしてそれぞれ交流損失の測定を分けて行い、その各測定値の合算値を除数2で除算して三相超電導変圧器全体としての交流損失を求めることを特徴とする超電導変圧器の交流損失測定方法。
- 請求項1の交流損失測定方法において、スター結線した二次側巻線の各相をu,v,w相として、外部から単相電力を供給する外部端子の組合せをu−v相、v−w相、w−u相の三通りにしてそれぞれ交流損失の測定を行い、その各測定値の合算値を除数2で除算して三相超電導変圧器全体としての交流損失を求めることを特徴とする超電導変圧器の交流損失測定方法。
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JP6065643B2 true JP6065643B2 (ja) | 2017-01-25 |
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CN114252811B (zh) * | 2022-01-13 | 2023-06-16 | 国网山东省电力公司淄博供电公司 | 一种配电变压器故障检测方法及检测装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS5524640A (en) * | 1978-08-10 | 1980-02-21 | Fuji Electric Co Ltd | Measurement of impedance and load loss of there-winding transformer |
JPS60118228U (ja) * | 1984-01-20 | 1985-08-09 | 株式会社日立製作所 | 三相変圧器用短絡接続装置 |
JPH1197260A (ja) * | 1997-09-17 | 1999-04-09 | Nissin Electric Co Ltd | 限流器付き超電導変圧器 |
JPH11148920A (ja) * | 1997-11-14 | 1999-06-02 | Sumitomo Electric Ind Ltd | 超電導線材の交流損失測定装置およびそれを用いた測定方法 |
KR100957623B1 (ko) * | 2009-10-30 | 2010-05-13 | 한국전력공사 | 고온 초전도체 교류손실 측정 장치 |
JP5998824B2 (ja) * | 2012-10-10 | 2016-09-28 | 富士電機株式会社 | 超電導コイルの交流損失測定方法 |
JP6123316B2 (ja) * | 2013-02-04 | 2017-05-10 | 富士電機株式会社 | 超電導コイルの交流損失測定方法および交流損失測定装置 |
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