Abstract:

According to the demand of new AC high-voltage measuring technology based on the development of power network, this paper proposes an AC high-voltage measuring system using high voltage standard capacitor based on the analysis of the existing AC high-voltage measuring technology, the working principle of this kind of AC high-voltage measuring system is analyzed in detail, and the experimental research on the steady state characteristic and frequency characteristic of the AC high-voltage measuring system is made, at the same time, the possible errors are analyzed in detail. The AC high-voltage measuring system meets the technical requirements of high-voltage signal acquisition in the power system, at the same time, meets the requirements of AC high-voltage measurement when the frequency is not more than 2 500Hz, and has certain practical value.

Key words: AC high-voltage measuring system, high voltage standard capacitor, steady state characteristics, frequency characteristic