การวิเคราะห์สนามไฟฟ้าที่มีผลต่อสภาพแวดล้อมรอบสายส่งไฟฟ้าแรงสูงขนาด 500 kV ด้วยวิธีไฟไนท์อิลิเมนท์

Abstract

This paper presents a mathematical model of electric fields in transmission system which performs in second-order partial differential equation by analyzing the electric field distribution around high voltage transmission line. It effects to environment and workman on the ground when consider single and double circuit 500 kV transmission line, which is the highest voltage in Thailand. The computer simulation is applied using finite element method that is developed by MATLAB program. The problem is considered to two dimensions, which is the time harmonic system with the graphical performance of electric field occurred. The simulation result of electric field that is from 500 kV HV transmission line both single and double circuit at high 1 m from ground that working human, the level of electric field which effects to human not over ICNIRP standard.