Temperature Rise Characteristics and Error Analysis of a DC Voltage Divider

Zhengyun Fang, Yi Luo, Shaolei Zhai, Bin Qian, Yaohua Liao, Lei Lan and Dianlang Wang
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Zhengyun Fang: Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
Yi Luo: Institute of Metrology Technology, Electric Power Research Institute, CSG, Guangzhou 510663, China
Shaolei Zhai: Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, China
Bin Qian: Institute of Metrology Technology, Electric Power Research Institute, CSG, Guangzhou 510663, China
Yaohua Liao: Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, China
Lei Lan: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Dianlang Wang: Institute of Metrology Technology, Electric Power Research Institute, CSG, Guangzhou 510663, China

Energies, 2021, vol. 14, issue 7, 1-12

Abstract: Measurement accuracy is an important performance indicator for high-voltage direct current (HVDC) voltage dividers. The temperature rise effect for a HVDC voltage divider’s internal resistance has an adverse effect on measurement accuracy. In this paper, by building a solid model of a DC voltage divider, the internal temperature rise characteristic and error caused by the temperature rise in a resistance voltage divider were theoretically simulated. We found that with the increase in height and working time, the internal temperature of the voltage divider increased. The results also showed that the lowest temperature was near the lower flange and the highest temperature was near the upper flange in the middle of the voltage divider. The error caused by the temperature rise increased first and then decreased gradually with divider height, increasing with its working time. The measurement error caused by the internal temperature difference in steady state reached a maximum of 158.4 ppm. This study provides a theoretical basis to determine the structure and accuracy improvement for a resistive voltage divider, which is helpful for the selection of components and the optimization of the heat dissipation structure.

Keywords: high-voltage direct current (HVDC); temperature coefficient; error; temperature distribution; measurement accuracy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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