Magnetic Shielding Design and Shielding Effectiveness Analysis Based on a Circular Array of Magnetic Field Sensors

In the field of current measurement in electrical power systems based on magnetic sensor array technology, using magnetic shielding is an effective solution to enhance the array’s resistance to crosstalk. However, due to the lack of systematic guidance for optimizing magnetic shielding structures and parameters, adjusting the shielding structure and parameters in different applications can be time-consuming and labor-intensive. Therefore, this paper systematically studies the influence of various factors on the shielding effectiveness of cylindrical magnetic shielding, based on finite element numerical simulation methods. These factors include magnetic shielding materials, the number of layers, holes, and the structure of shielding cover, providing guidance for optimizing the structure and parameters of magnetic shielding.