Solution of scattered electric field of transmission lines in the background of ground

Calculating the electromagnetic scattered field of transmission lines is crucial for accurately determining the protection distance against passive interference between the transmission lines and adjacent radio stations. The traditional algorithm is mainly based on the electric field integral equation of electromagnetic scattered of transmission lines in free space, so it cannot analyze the influence from the ground. Therefore, this article focuses on the calculation method of electromagnetic scattered field and constructs the electric field integral equation of electromagnetic scattered of transmission lines in the background of ground, finally completes the accurate solution of the scattered electric field of transmission lines. To verify the accuracy of the proposed algorithm in this paper, a simulation calculation of the electric field at 10 measurement points was conducted using both the proposed algorithm in this paper and the traditional algorithm. Compared to traditional algorithms, the accuracy of the proposed algorithm in this paper has increased by 22.65 %. According to the ANOVA, the P-value of the proposed algorithm and the traditional algorithm is 0.01279, which proves that the two algorithms have significant differences. And as the relative dielectric constant of the ground increases, the deviation between the proposed algorithm in this paper and traditional algorithms gradually increases. This article further improves the accuracy of solving the scattered electric field of transmission lines, which can further accurately determine the passive interference protection distance between transmission lines and radio stations, thus reducing the waste of national resources because of avoiding excessive protection distance.