JP4749243B2 - 瞬時電圧低下の事象の傾向分析方法 - Google Patents
瞬時電圧低下の事象の傾向分析方法 Download PDFInfo
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- JP4749243B2 JP4749243B2 JP2006161335A JP2006161335A JP4749243B2 JP 4749243 B2 JP4749243 B2 JP 4749243B2 JP 2006161335 A JP2006161335 A JP 2006161335A JP 2006161335 A JP2006161335 A JP 2006161335A JP 4749243 B2 JP4749243 B2 JP 4749243B2
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- 238000004458 analytical method Methods 0.000 title description 2
- 230000005540 biological transmission Effects 0.000 claims description 12
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Description
・事象A:継続時間がa秒以下の瞬低
・事象B:電圧低下度がb%以下の瞬低
とすると、各々の事象の発生確率P(A)およびP(B)は、上式によって算出される。また、事象Aの条件下で事象Bが発生する確率をP(B|A)とすると、事象Aと事象Bが同時に発生する確率P(A∩B)は、
P(A∩B)=P(B|A)P(A)
となり、各々の事象の同時発生確率として算出できる。もし、事象Aと事象Bとの相関を判断した結果、互いに独立である場合は、
P(A∩B)=P(A)P(B)
となり、同様に算出できる。
8 瞬低対策装置
Claims (1)
- 需要家構内側に配設する、電力系統の送配電線設備及び受電先の瞬時電圧低下(以下、瞬低と称する)を補償する瞬低対策装置のうち、瞬低の継続時間及び電圧低下度に応じて設けられた各種の仕様から最適な仕様の前記瞬停対策装置の選択を支援するための方法であって、
各需要家の過去の瞬低実績のデータをサンプルデータとして記憶する工程と、
前記記憶した瞬低実績のサンプルデータから統計的手法に基づいて、瞬低の継続時間及び電圧低下度の母集団の正規分布の分布割合を算出する工程と、
前記算出した分布割合を補償する補償範囲を求める工程と、
よりなることを特徴とする瞬時電圧低下の事象の傾向分析方法。
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JP2006161335A JP4749243B2 (ja) | 2006-06-09 | 2006-06-09 | 瞬時電圧低下の事象の傾向分析方法 |
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JP2006161335A JP4749243B2 (ja) | 2006-06-09 | 2006-06-09 | 瞬時電圧低下の事象の傾向分析方法 |
Publications (2)
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JP2007330080A JP2007330080A (ja) | 2007-12-20 |
JP4749243B2 true JP4749243B2 (ja) | 2011-08-17 |
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JP2006161335A Expired - Fee Related JP4749243B2 (ja) | 2006-06-09 | 2006-06-09 | 瞬時電圧低下の事象の傾向分析方法 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113222393B (zh) * | 2021-05-07 | 2022-10-25 | 广东电网有限责任公司广州供电局 | 风险评估方法、装置、计算机设备和计算机可读存储介质 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4098687B2 (ja) * | 2003-08-22 | 2008-06-11 | 株式会社東芝 | 電力品質評価システム、電力品質評価方法及び電力品質評価用プログラム |
JP4454348B2 (ja) * | 2004-03-18 | 2010-04-21 | 中国電力株式会社 | 瞬時電圧低下分析システム |
JP2006340552A (ja) * | 2005-06-03 | 2006-12-14 | Toshiba Corp | 電力品質評価システムとその方法、およびプログラム |
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