LI Bao, SHU Nai-qiu, LI Zi-pin, et al. Development of High-precision Standard Device for ZnO Arrestor Testing Instrument[J]. High voltageapparatus, 2009, 45(1): 95-97+100.
LI Bao, SHU Nai-qiu, LI Zi-pin, et al. Development of High-precision Standard Device for ZnO Arrestor Testing Instrument[J]. High voltageapparatus, 2009, 45(1): 95-97+100.DOI：
A high-precision standard device for metal-oxide surge arrester testing instrument based on DSP and CPLD was developed to verify the testing instrument.This device can generate standard voltage and current to simulate metal-oxide surge arrester.The high spatial resolution digital phase-shifting technology and feedback control technology were utilized in design of the device to improve its precision.The device was tested by mid-south national center of metrology
and the results show that it can meet the requirements for verifying metal-oxide surge arrester testing instrument with 0.1% output amplitude error of voltage and current signals and 0.04° phase error between voltage and current signals.
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