Temperature Rise Characteristics and Error Analysis of a DC Voltage Divider

Autor: Shaolei Zhai, Yi Luo, Yaohua Liao, Fang Zhengyun, Bin Qian, Wang Dianlang, Lei Lan
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Energies
Volume 14
Issue 7
Pages: 1914
Energies, Vol 14, Iss 1914, p 1914 (2021)
ISSN: 1996-1073
DOI: 10.3390/en14071914
Popis: 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.
Databáze: OpenAIRE
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