Determination of a leakage rate of an insulation gas

The invention relates to a method for determining a rate of leakage of an insulation gas from a gas-insulated compartment (C1, C2, C3) of an electrical apparatus comprising a plurality of similar compartments, characterized in that it comprises the steps of: periodically determining (E3) a gas densi...

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Bibliographische Detailangaben
Hauptverfasser:	RAYON JEAN-LUC, WEIDMANN WILFRID, AIT ABDELMALEK FARID
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES GENERATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS RELAYS SELECTORS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	The invention relates to a method for determining a rate of leakage of an insulation gas from a gas-insulated compartment (C1, C2, C3) of an electrical apparatus comprising a plurality of similar compartments, characterized in that it comprises the steps of: periodically determining (E3) a gas density (D1, D2, D3) for each of the compartments, determining (E4) respective straight lines (DR1, DR2, DR3) on the basis of series of gas densities for each of the compartments, comparing (E6) the slopes of the determined straight lines to one another, detecting (E7) a leak if the result of a comparison for one of the slopes is greater than a threshold, and, in the event of a detection, determining (E8) a leakage rate for the compartment associated with the slope that led to a detection.