A method for encapsulating the ceramic capacitorsinside the insulator and performing on-line energy extraction bythe principle of capacitive voltage divider is proposed.Throughthe field test,the ceramic capacitor insulator with a score of 4 nF/80 nF can obtain a maximum output power of 2 W,whichverifies the feasibility of the method.By constructing a 10 kV circuit simulation platform,it is found that when the secondaryside of the isolation transformer series inductance or the twoisolation transformers are connected in series,the output power isincreased compared with the single isolation transformer,and theoutput power of the secondary side of the isolation transformerseries inductance is higher.
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