An effective method to avoid charge leakage along the surface in voltage response measurement

Yunlong Sun; Zhonghua Li; Yongsen Han; Changyou Suo

doi:10.1063/5.0051428

An effective method to avoid charge leakage along the surface in voltage response measurement

Rev Sci Instrum. 2021 May 1;92(5):055104. doi: 10.1063/5.0051428.

Authors

Yunlong Sun¹, Zhonghua Li¹, Yongsen Han¹, Changyou Suo¹

Affiliation

¹ Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, Heilongjiang Province, China.

PMID: 34243264
DOI: 10.1063/5.0051428

Abstract

The voltage response measurement is a non-destructive method to diagnose the aging condition of insulation and is used extensively. The characteristics about the volume polarization and resistance can be obtained by analyzing the measured decay or return voltage of a charged dielectric, which is important for aging diagnosis. To eliminate the influence of the charges leaking along the sample surface on the voltage response analysis, we present an effective three electrode configuration with a potential guard electrode. The voltage decay results show that adopting electrodes with a potential guard electrode can effectively avoid charge leakage along the sample surface.