Analysis of Leakage Impedance Variations Due to Cross-Sectional Area Changes in High Voltage Sections

• Published in: IEEE access 2024, Vol.12, p.170379-170386
• Main Authors: Dawood, Kamran, Tursun, Semih, Komurgoz, Guven
• Format: Article
• Language: English
• Subjects: Analytical models; Cross-section; dry-type transformer; Finite element analysis; High-voltage techniques; Impedance; leakage impedance; Magnetostatics; Mathematical models; Numerical models; Power transformer insulation; Solid modeling; Windings
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2024.3487300

Transformers are crucial devices in electrical power systems, playing a key role in voltage regulation, power transmission, and distribution. Leakage impedance is one of the main factors influencing the transformer's performance. Leakage impedance affects the efficiency and stability of the power transformers. This paper focuses on the numerical estimation for the calculation of leakage impedance with three sections in the primary winding (high-voltage winding) and a single section in the secondary winding (low-voltage winding). This paper aims to comprehensively examine the variations that arise from the different cross-sectional areas of the various sections of the high-voltage winding, as well as how these variations affect the transformer's overall leakage impedance. This study focuses on examining the effect of different cross-section areas of the high-voltage winding on leakage impedance. Finite element analysis is used to measure and evaluate the leakage impedance of the transformer under different configurations. This study examines the impact of cross-sectional area variations on the transformer's leakage impedance, highlighting the crucial roles of impedance and inductance.