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Measurement of the electric fields of high-voltage direct-current (HVDC) transmission lines is essential for safety and reliability of power systems. However, air breakdown and corona discharge at the vicinity of HVDC lines create ion flows that induce a charging effect to measurement equipment, causing significant measurement errors. This paper reports an MEMS-based sensor to measure the HVDC fields...
Electric field measurements have a wide range of applications in many fields. But for ion flow close to high-voltage DC (HVDC) transmission lines, the current measurements are invalid. This paper for the first time presents a novel electric field sensor (EFS) with double-layer floating structure to measure the target electric fields (DC synthetic fields) that are strongly coupled with ion flow. The...
Measuring electric field has a very wide range of applications in the power system, but for the ion field under the HVDC transmission lines, the current measurements are insufficient. In this paper, effects of interventional measurement, theoretical analysis, measuring programs are researched. Sensors in a Poisson field sense an electric field Ein, which consists of three parts. E0 is the origin electric...
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