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Solar radiation onto gas-insulated switchgear has a major impact to the SF6 density distribution. The resulting fluctuations in the sensor signal hinder the detection of small gas leakages. The authors propose a model-based filtering algorithm. This model, based on physical principles of conservation of energy, momentum and mass, was developed and tested. The tests were performed by comparison with...
Recently, electric utilities decide to permanently monitor the SF6 gas level in gas insulated switchgear. This is mainly because of two reasons: The optimization of their maintenance strategy and environmental awareness associated with greenhouse gas emissions. The detection of small gas leakages is not an easy task. The authors propose a model which allows using pressure sensors. The problem of high...
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