### Measurement and analysis of electromagnetic pulse during lifting and dropping of electric locomotive pantograph

YANG Changqiong LU Mai ZHOU Wenying ZHANG Qi()

1. Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730070, China
• Received:2019-01-03 Revised:2019-03-07 Accepted:2019-03-07 Online:2019-08-20 Published:2019-08-21
• Supported by:
National Natural Science Foundation of China(51567015);Lanzhou Jiaotong University Fund for Distinguished Young Scholars(2015031)

Abstract:

This study examines changes in an electromagnetic environment caused by an electromagnetic pulse during lifting and dropping of pantograph. The following four working conditions were tested: a background environment with no locomotive, the running of a locomotive, and the two processes of lifting and dropping of pantograph. The measured power levels were converted into corresponding electric and magnetic field strengths and were compared with the occupational exposure limits defined in International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines. The results showed that the peak value of an electromagnetic pulse during pantograph lifting appeared at a frequency of 458 MHz, the corresponding power level was -24.30 dBm, the electric field intensity was 2.02×10-1 V/m, and the magnetic field intensity was 5.37×10-4 A/m. The peak value of an electromagnetic pulse during pantograph dropping was presented at a frequency of 144 MHz, at a corresponding power level of -29.47 dBm, electric field intensity of 3.51×10-2 V/m, and magnetic field intensity of 9.31×10-5 A/m. The maximum electric and magnetic field intensities occurred during pantograph lifting, and their values were far smaller than the ICNIRP occupation exposure limits. The results thus indicate that the electromagnetic radiation environment generated by lifting and dropping of the pantograph is safe to occuptational workers.

CLC Number:

• TL929