TY - GEN
T1 - A Modified Three-Phase Synchronous Isothermal Relaxation Current Detection System Based on Independent Measurement Loop Method
AU - Li, Hai
AU - He, Bangle
AU - Shen, Bin
AU - Chen, Jiawei
AU - Zhou, Yunjie
AU - Yang, Tianyu
AU - Zhu, Xinyang
AU - Wang, Yalin
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - As a nondestructive testing technique, the isothermal relaxation current (IRC) method has been applied to assess the condition of power cable insulation. In order to shorten the detection time in the field and improve the measurement accuracy, a modified measurement circuit based on an independent measurement loop was proposed to discharge the interference from the high-voltage insulated wires. Based on this circuit, the three-phase synchronous IRC measurement system was established. Furthermore, the independence and consistency of the three-phase current measurement loop were verified, which could realize the synchronous acquisition of the three-phase relaxation current. Finally, the three-phase IRC test was carried out to evaluate the aging state of the sample in service. The results showed that the aging state of each phase for the same cable might be quite different after long service.
AB - As a nondestructive testing technique, the isothermal relaxation current (IRC) method has been applied to assess the condition of power cable insulation. In order to shorten the detection time in the field and improve the measurement accuracy, a modified measurement circuit based on an independent measurement loop was proposed to discharge the interference from the high-voltage insulated wires. Based on this circuit, the three-phase synchronous IRC measurement system was established. Furthermore, the independence and consistency of the three-phase current measurement loop were verified, which could realize the synchronous acquisition of the three-phase relaxation current. Finally, the three-phase IRC test was carried out to evaluate the aging state of the sample in service. The results showed that the aging state of each phase for the same cable might be quite different after long service.
KW - aging assessment
KW - independent measurement loop
KW - isothermal relaxation current
KW - three phases
KW - XLPE cable
UR - http://www.scopus.com/inward/record.url?scp=85173818437&partnerID=8YFLogxK
U2 - 10.1109/EEPS58791.2023.10256792
DO - 10.1109/EEPS58791.2023.10256792
M3 - Conference contribution
AN - SCOPUS:85173818437
T3 - 2023 3rd International Conference on Energy Engineering and Power Systems, EEPS 2023
SP - 422
EP - 425
BT - 2023 3rd International Conference on Energy Engineering and Power Systems, EEPS 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd International Conference on Energy Engineering and Power Systems, EEPS 2023
Y2 - 28 July 2023 through 30 July 2023
ER -
