### Safety assessment of electromagnetic exposure of quadruple-circuit AC transmission line with 1 000 kV/500 kV dual voltage on the same tower

DU Qingzhong1,2,LU Mai1()

1. 1.Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730070, China
2.College of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
• Received:2019-11-06 Revised:2019-12-31 Accepted:2019-12-31 Online:2020-04-20 Published:2020-04-22
• Contact: LU Mai E-mail:mai.lu@hotmail.com
• About author:DU Qingzhong (male) was born in September 1994. Now he is a graduate student at Lanzhou Jiaotong University, focusing on the safety assessment of electromagnetic exposure
• Supported by:
National Natural Science Foundation of China(51567015);Project of Department of Edication of Gansu Province(2018D-08)

Abstract:

The finite-element multi-physics simulation software COMSOL was used to analyze the effects on the human body of a quadruple-circuit AC transmission line with a 1 000/500 kV dual voltage on the same tower. The magnetic induction intensity and induced electric field intensity in body tissues were calculated, and their maximum values in the human body were found to be 8.02 μT and 13.4 mV/m, respectively, under the conditions of 1 000 kV and 500 kV. These results were lower than the limits of the human electromagnetic (EM) exposure limits specified by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The case of a 1 000 kV or 500 kV single operation and nine typical phase sequence arrangements were analyzed, and the calculation results were also lower than the ICNIRP limits. Based on the results, the EM exposure generated by a quadruple-circuit AC transmission line with a 1 000 kV/500 kV dual voltage on the same tower will not pose a threat to human health.

CLC Number:

• TL71