Switchgear charged for fault detection, principles and methods the live test from switchgear partial discharge, analyzes the use of ultrasonic detection assays and transient voltage for the switchgear cabinet feasibility of fault diagnosis; using a combination of switchgear partial discharge founding live testing equipment failure cases, by power testing experimental analysis confirmed the presence of switchgear failure to verify the validity of partial discharge detection in live test switchgear fault diagnosis.
The purposes of measuring the transformer load losses and short-circuit impedance are checking whether they can meet the standard requirements. The traditional transformer short circuit test method were analyzed in theory and combined with engineering practice, how to improve test methods have been researched and explored is this paper. The proposed method can provide a good theoretical basis and experimental evidence for the transformer short circuit test.
Abstract. Through the analysis of lightning to the harmfulness of the power transmission line, puts forward the specific measures to prevent lightning accidents, improving insulation, installing controllable discharge lightning rod, reducing the tower grounding resistance, adding coupling ground wire and the proper use of send arrester electrical circuit transmission line. And take on the unit measures nearly were compared, statistics and analysis.
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