期刊
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
卷 61, 期 4, 页码 1064-1071出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2011.2179337
关键词
Corona current; electric field; finite-element method (FEM); high-frequency sensor; high-voltage direct-current (HVDC)
资金
- National Program on Key Basic Research Project (973 Program) [2011CB209402]
- State Grid Corporation of Science and Technology Program [GY71-11-024]
Corona current measurement is essential for research into corona discharge under ultra high-voltage direct-current (HVDC) environment. The sensor is extremely important due to the small (microampere) amplitude of the corona current and the wide (dc to tens of megahertz) range in frequency. In this paper, a high-frequency sensor is described, and its application is introduced for accurate measurement of corona current under HVDC environment. Based on the finite-element method and the charge simulation method, the structure of the sensor is determined considering a +/- 1200-kV environment. The sensor is immune to the effects from the external environments such as vibration and temperature changes. Results indicate that the sensor is feasible for corona current measurement.
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