GAS PRESSURE MONITORING DEVICE OF GAS INSULATION BREAKER

To provide a gas pressure monitoring device for a gas breaker that can be easily attached and detached in an operating state, has a function of more accurately correcting pressure changes due to temperature changes, and has a function of estimating a time margin until gas pressure reaches a low leve...

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Bibliographische Detailangaben
Hauptverfasser:	NISHIKAWA EIJI, MURAKAWA YASUTAKA, OHASHI YOSHIKAZU, ASAI AKIRA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	To provide a gas pressure monitoring device for a gas breaker that can be easily attached and detached in an operating state, has a function of more accurately correcting pressure changes due to temperature changes, and has a function of estimating a time margin until gas pressure reaches a low level (hereinafter referred to as "alarm level") where arc discharge cannot be suppressed by gas pressure.SOLUTION: An angle of a pointer of a gas pressure meter is detected using a magnetic sensor. Gas pressure at 20°C is calculated from a measured value of a temperature sensor attached to a breaker body. Time margin from a change status of the gas pressure to reaching an alarm level is estimated by a mathematical method.SELECTED DRAWING: Figure 1 【課題】運用状態のまま容易に着脱でき、温度変化による圧力変化をより正しく補正する機能を有し、かつ、ガス圧がアーク放電を抑制できない低レベル(以下「警報レベル」)に達するまでの時間的余裕を推定する機能を持った、ガス遮断器のガス圧力監視装置を提供する。【解決手段】磁気センサーを用いてガス圧力メーターの指針の角度を検出し、遮断器本体に取り付けた温度センサーの測定値から２０℃におけるガス圧を逆算し、そのガス圧の変化状況から警報レベルに達するまでの時間的余裕を数学的手法によって推定した。【選択図】図１