Device and method for measuring dynamic resistance of high-voltage circuit breaker
2009
The invention discloses a device for measuring dynamic resistance of a high-voltage circuit breaker. The device is characterized by at least comprising a super capacitor module (5), a super capacitor charging device (10), a current sampler (4) and a voltage sampler (2), wherein the super capacitor module (5) supplies measuring power supplies with different requirements for measuring switch-on resistance (11) and loop resistance (14) of the high-voltage circuit breaker (3); a charging controller (7) and an electronic switch (16) are controlled by a digital processor (1) so as to control charging and discharging of a super capacitor; and an electric signal is acquired and processed quickly by the digital processor (1) so as to quickly obtain a measuring result on site. Measurement of switch-on resistance, loop resistance and switch-on resistance making time of the high-voltage circuit breaker is integrated and the measuring results of three parameters can be obtained through one-step measuring operation.
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