Calculation and Characteristics Analysis for Radiated Electromagnetic Field of High Voltage Converter Valve

Abstract

Calculation and analysis of the radiated electromagnetic field by the high voltage converter valve are very important for the electromagnetic compatibility analysis between the various components of the converter system. First, the electromagnetic radiation calculation process of the converter valve is proposed. Then, according to the actual engineering application, a DC transmission simulation system of the converter system was built, and the current of the converter valve tower arm was obtained. Subsequently, according to the actual size, a 3D calculation model of the converter valve tower was established, and an MoM-based calculation method for the electromagnetic field of the converter valve tower was proposed. Finally, the attenuation characteristics and azimuth characteristics of the converter valve tower are analyzed, and the distribution rules of the radiated electromagnetic field inside the high voltage converter valve hall are clarified, which provide a theoretical foundation for the evaluation of the electromagnetic compatibility of the converter system.