A Simplified Predictive Control Method of Power Frequency Electric Field on Roof near 500 kV Transmission Lines. Issue 4 (February 2020)

• Record Type: Journal Article
• Authors: Huang, Mingxiang; Wang, Yifei; Bian, Hongzhi; Yang, Dongyang
• Is Part Of: IOP conference series. Volume 446:Issue 4(2020)
• Publication Date: 2020-02
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/446/4/042062
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: In order toget a simplified predictive control method of power frequency electric field on roof near 500 kV transmission lines, a three-dimensional electric field simulation model including the lines, tower and house isestablished based on the finite element method. Based on the knowledge that obtained from existing studies, the spatial distance between the house and the transmission line is the main factor affecting the power frequency electric field intensity on the roof. Therefore, the spatial distance is determined as a variable, and the least squares method is used to fit the optimal electric field distribution function. A simplified prediction model of the power frequency electric field at fixed monitoring point on the roof near the transmission line is derived. The results show that the fitting function of the third-order polynomial can achieve better predicting effect. The specific mathematical expression of the prediction model is provided.A deductive process of the application of the proposed method is given. The proposed power frequency electric field predictive control method can provide reference for the planning, design and environmental impact assessment of transmission line projects.