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《High Voltage Engineering》 2003-01
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Electronic Voltage Transformers Based on Capacitive Voltage Divider

In recent years, considerable efforts have been devoted to the electronic voltage measurement technology. The electronic voltage transformer based on capacitive voltage divider is one kind of EVT, and this paper discusses its principle and characteristics. A prototype ECVT has been designed and constructed. Primary tests show that it meets the reqpirements of good accuracy. The special two kinds of transient responses of ECVT is discussed too - short circuit at the high voltage level and the power system reclosing with trapped charge. Simulation results show that short circuit time and capacitance value have great effects on the transient response of ECVT, meanwhile its load has small effect on it. System reclosing with trapped charge will cause transient measurement error, which can be calibrated by software method.
【CateGory Index】: TM452
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【References】
Chinese Journal Full-text Database 10 Hits
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