JP7182463B2 - 電気式ヒューズ電流検出システム及び監視方法 - Google Patents
電気式ヒューズ電流検出システム及び監視方法 Download PDFInfo
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Description
Claims (18)
- 電流検出システムであって、
導体と、
プロセッサと、を備え、
前記導体は、電力システムに接続されたときに、前記導体の両端で検出される電圧が前記導体を通って流れる電流の変化とは必ずしも相関しないように変化する可変な抵抗を有し、
前記プロセッサは、前記導体が電力システムに接続されたときに前記導体の両端で反復して検出された電圧を受け取り、前記検出された電圧の第1の検知ステートと、前記導体の所定の熱平衡特性とに少なくとも基づいて、前記導体を通って流れる電流を反復して算出するように動作可能であり、
前記第1の検知ステートにおいて、前記導体の両端で反復して検出された電圧に経時的な変化はなく、前記所定の熱平衡特性は、前記導体の平均温度が、対応する平衡電流及び平衡抵抗とともに一定値に到達する理想的特性であり、前記第1の検知ステートにおいて前記導体の両端で検出される電圧は、前記平衡電流の線形関数である平衡電圧とみなされ、
前記プロセッサは、前記導体の所定の熱平衡特性に関する情報を有するかまたは利用可能であり、前記導体の前記所定の熱平衡特性に関する情報は、前記平衡電圧と前記平衡電流の関係及び/または前記平衡電圧と前記平衡抵抗の関係を少なくとも含み、
前記第1の検知ステートにおいて前記導体を通って流れる電流は、前記平衡電圧を前記平衡抵抗で除算することにより算出される、電流検出システム。 - 前記導体がヒューズ素子である、請求項1に記載の電流検出システム。
- ヒューズハウジングをさらに備え、
前記ヒューズ素子が前記ヒューズハウジング内に収納され、前記プロセッサもまた前記ヒューズハウジング内に収納されている、請求項2に記載の電流検出システム。 - ヒューズホルダをさらに備え、前記プロセッサが前記ヒューズホルダ上に設けられている、請求項2に記載の電流検出システム。
- 前記ヒューズ素子が収納され、前記ヒューズ素子と前記電力システムとを電気的に接続または切断するように動作するスイッチが備えられた断路スイッチ装置をさらに備え、前記プロセッサが前記断路スイッチ装置上に設けられている、請求項2に記載の電流検出システム。
- 前記プロセッサと通信するように構成されているリーダ装置をさらに備える、請求項1に記載の電流検出システム。
- ハウジングをさらに備え、
前記導体が前記ハウジング内に収納され、前記導体の前記所定の熱平衡特性に関する情報を含むラベルを前記ハウジング上にさらに備え、前記リーダ装置が、前記ラベルから前記所定の熱平衡特性に関する情報を読み取り、前記第1の検知ステートにおいて前記導体を通って流れる前記電流を反復して算出するために前記ラベルからの情報を利用するように構成されている、請求項6に記載の電流検出システム。 - 前記プロセッサが、前記導体の両端で反復して検出された電圧が経時的に変化する第2の検知ステートに少なくとも基づいて、前記導体を通って流れる電流を算出するようにさらに動作可能であり、前記導体は、変化する抵抗または変化する電流を有する非熱平衡状態で動作しているとみなされ、
前記プロセッサが、前記検出された電圧の前記第2の検知ステートの変化率を、前記導体の前記所定の非熱平衡特性の所定のランプ速度閾値と比較するように構成され、
前記プロセッサは、前記導体の所定の非熱平衡特性に関する情報を有するかまたは利用可能に構成され、前記導体の所定の非熱平衡特性に関する情報は、前記所定のランプ速度閾値、及び、前記導体の抵抗と時定数の逆指数関係を少なくとも含み、
前記所定のランプ速度閾値は、前記導体の両端で反復して検出された電圧の第2の検知ステートの経時的な変化が、前記導体を通って流れる電流の実際の変化に起因するものか、または前記第2の検知ステートにおける前記導体の抵抗の変化に起因するものかを判別するための閾値であり、
前記導体の両端で反復して検出された電圧の前記第2の検知ステートの前記変化率が、前記第2の検知ステートにおける前記所定のランプ速度閾値未満である場合、前記プロセッサが、前記導体の両端で反復して検出された電圧の第2の検知ステートの経時的な変化は、前記第2の検知ステートにおける前記導体の抵抗の変化に起因するものと判定し、前記導体の前記所定の非熱平衡特性に関する情報に含まれる前記導体の抵抗と前記時定数の逆指数関係を使用して、前記導体の両端の電圧が検出された時点の前記導体の抵抗を算出するように動作可能である、請求項1に記載の電流検出システム。 - 前記プロセッサは、さらに、前記第2の検知ステートにおいて前記導体の両端で反復して検出された電圧の前記変化率が、前記所定のランプ速度閾値を上回る場合、前記導体の両端で反復して検出された電圧の第2の検知ステートの経時的な変化は、前記第2の検知ステートにおいて前記導体を通って流れる電流の実際の変化に起因するものと判定し、
前記導体の両端で検出された電圧を、前記第2の検知ステートの直前に決定された前記導体の前記平衡抵抗で除算することにより、前記導体を通って流れる電流を算出するように動作可能である、請求項8に記載の電流検出システム。 - 電流検出システムであって、
ハウジングと、第1及び第2の端子素子と、ヒューズ素子であって、電力システムに接続されたときに、前記ヒューズ素子の両端で検出される電圧が前記ヒューズ素子を通って流れる電流の変化とは必ずしも相関しないように変化する可変な抵抗を有するヒューズ素子と、を含む電気ヒューズと、
前記ヒューズ素子が電力システムに接続されたときに前記ヒューズ素子の両端で反復して検出された電圧を受け取るプロセッサであって、前記ヒューズ素子の両端で反復して検出された電圧に経時的な変化がない電圧の第1の検知ステート及び前記ヒューズ素子の両端で反復して検出された電圧が経時的に変化している電圧の第2の検知ステートの少なくとも1つに依存して、前記ヒューズ素子を通って流れる電流を異なる方法で反復して算出するように動作可能である、プロセッサと、を備え、
前記ヒューズ素子の両端で検出された電圧の前記第1の検知ステートでは、前記ヒューズ素子を通って流れる電流は、前記ヒューズ素子の両端で検出された電圧と前記ヒューズ素子の所定の熱平衡特性とに基づいて算出され、前記検出された電圧は、平衡電流と平衡抵抗の積である平衡電圧に等しく、
前記プロセッサは、前記ヒューズ素子の所定の熱平衡特性に関する情報を有するかまたは利用可能であり、前記ヒューズ素子の所定の熱平衡特性に関する情報は、前記平衡電圧と前記平衡電流の関係及び/または前記平衡電圧と前記平衡抵抗の関係を少なくとも含み、
前記第1の検知ステートにおいて前記ヒューズ素子を通って流れる電流は、前記平衡電圧を前記平衡抵抗で除算することにより算出され、
前記ヒューズ素子の両端で検出された電圧の前記第2の検知ステートでは、前記ヒューズ素子の両端で検出された前記電圧と、前記平衡抵抗が第1の値から前記第1の値とは異なる第2の値へと移行している前記ヒューズ素子の所定の非熱平衡特性とに基づいて、前記電流が算出され、
前記プロセッサが、前記検出された電圧の前記第2の検知ステートの変化率を、前記所定の非熱平衡特性の所定のランプ速度閾値と比較するように構成され、
前記プロセッサは、前記ヒューズ素子の所定の非熱平衡特性に関する情報を有するかまたは利用可能に構成され、前記ヒューズ素子の所定の非熱平衡特性に関する情報は、前記所定のランプ速度閾値、及び、前記ヒューズ素子の抵抗と時定数の逆指数関係を少なくとも含み、
前記所定のランプ速度閾値は、前記ヒューズ素子の両端で反復して検出された電圧の第2の検知ステートの経時的な変化が、前記ヒューズ素子を通って流れる電流の実際の変化に起因するものか、または前記第2の検知ステートにおける前記ヒューズ素子の抵抗の変化に起因するものかを判別するための閾値であり、
前記ヒューズ素子の両端で反復して検出された電圧の前記第2の検知ステートの前記変化率が、前記所定のランプ速度閾値未満である場合、前記プロセッサは、前記ヒューズ素子の両端で反復して検出された電圧の前記第2の検知ステートの経時的な変化が前記第2の検知ステートにおける前記ヒューズ素子の抵抗の変化に起因するものと判定し、前記所定の非熱平衡特性に関する情報に含まれる前記ヒューズ素子の抵抗と時定数の逆指数関係に基づいて前記ヒューズ素子の抵抗を決定し、
前記ヒューズ素子の両端で反復して検出された電圧の前記第2の検知ステートの前記変化率が、前記所定のランプ速度閾値を上回る場合、前記プロセッサは、前記ヒューズ素子の両端で反復して検出された電圧の第2の検知ステートの経時的な変化は、前記第2の検知ステートにおいて前記ヒューズ素子を通って流れる電流の実際の変化に起因するものと判定し、前記ヒューズ素子の両端で検出された電圧を、最後に決定された前記ヒューズ素子の前記平衡抵抗で除算することにより、前記ヒューズ素子を通って流れる電流を算出する、ように動作可能である、電流検出システム。 - ヒューズハウジングをさらに備え、
前記プロセッサが、前記ヒューズハウジング内に収納されている、請求項10に記載の電流検出システム。 - ヒューズホルダをさらに備え、前記プロセッサが前記ヒューズホルダ上に設けられている、請求項10に記載の電流検出システム。
- 前記電気ヒューズが収納され、前記ヒューズ素子と前記電力システムとを電気的に接続または切断するように動作するスイッチが備えられた断路スイッチ装置をさらに備え、前記プロセッサが前記断路スイッチ装置上に設けられている、請求項10に記載の電流検出システム。
- 前記電気ヒューズが、バーコード及びRFIDタグのうちの少なくとも一方を含み、前記電流検出システムが、前記バーコード及び前記RFIDタグのうちの前記少なくとも一方と通信し、前記ヒューズ素子を通って流れる電流の算出を行うための熱平衡特性または非熱平衡特性の情報を得るように構成されたリーダ装置をさらに備える、請求項10に記載の電流検出システム。
- 前記電気ヒューズに含まれる前記ヒューズ素子の前記所定の熱平衡特性に関する情報及び前記所定の非熱平衡特性に関する情報を含むラベルをさらに備え、前記リーダ装置が、前記ラベルを読み取り、適用可能な熱平衡特性及び非熱平衡特性を決定するために前記ラベルからの情報を利用するように構成される、請求項14に記載の電流検出システム。
- 電力システムにおける電流を検出する方法であって、
導体であって、電力システムに接続されたときに、前記導体の両端で検出される電圧が前記導体を通って流れる電流の変化とは必ずしも相関しないように変化する抵抗を有する導体を設けることと、
前記導体が前記電力システムに接続されたときに前記導体の両端の電圧を反復して検出することと、
前記導体の両端で反復して検出された電圧に経時的な変化がない前記検出された電圧の第1の検知ステートと、前記導体の平均温度が、対応する平衡電流及び該平衡電流の線形関数である平衡抵抗とともに、一定値であり、前記平衡電流と前記平衡抵抗の積として平衡電圧が定まる前記導体の所定の熱平衡特性とに少なくとも基づいて、前記導体を通って流れる電流を反復して算出することと、を含み、
前記導体の所定の熱平衡特性は、前記平衡電圧と前記平衡電流の関係及び/または前記平衡電圧と前記平衡抵抗の関係を少なくとも含み、
前記導体を通って流れる電流は、前記第1の検知ステートにおいて前記導体の両端で検出された電圧を前記平衡電圧として使用し、前記平衡電圧を前記平衡抵抗で除算することにより算出される、方法。 - 前記導体を設けることが、ヒューズ素子を含むヒューズを設けることを含む、請求項16に記載の方法。
- 前記ヒューズがヒューズハウジングを含み、前記導体の両端の電圧を検出することが、前記ヒューズハウジング内の場所で前記ヒューズ素子の両端の前記電圧を検出することを含む、請求項17に記載の方法。
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JP2018523121A (ja) | 2018-08-16 |
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US10180447B2 (en) | 2019-01-15 |
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US10598703B2 (en) | 2020-03-24 |
KR102654979B1 (ko) | 2024-04-05 |
MX2018005213A (es) | 2018-08-01 |
CN107850633B (zh) | 2021-09-28 |
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CA3003895A1 (en) | 2017-05-11 |
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