DING Ran, WANG Chong-lin, ZHU Jin-long. Research of Measurement Apparatus of Capacitance Current Based on Signal-injection Method[J]. Journal of Mine Automation, 2007, 33(2): 26-29.
Citation: DING Ran, WANG Chong-lin, ZHU Jin-long. Research of Measurement Apparatus of Capacitance Current Based on Signal-injection Method[J]. Journal of Mine Automation, 2007, 33(2): 26-29.

Research of Measurement Apparatus of Capacitance Current Based on Signal-injection Method

  • Accompany with adoption of cable in medium voltage distribution network,the level of capa-citance current of the system increases.More and more researchers focus on how to measure the capacitance current to the ground of the distribution network system precisely and swiftly.The paper designed a measurement apparatus of capacitance current based on signal-injection method,which made use of direct digi-tal frequency synthetics(DDFS) technology to produce various frequency signal of current and made use of Fourier to measure the capacitance current of neutral non-valid grounded system.It has advantages of high precision,convenient and flexible for use.
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