Measurement and Analysis on Magnetic Field Influence of Substation for Magnetic Shielding Device

Author:

Cheng Yuan12,Luo Yaozhi1,Shen Ruihong12,Zhao Liang2,Zhou Weiyong3ORCID

Affiliation:

1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310052, China

2. China United Engineering Co., Ltd., Hangzhou 310052, China

3. School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China

Abstract

The residual magnetic field in a magnetic shielding device with a multilayer high permeability material (permalloy) structure can be obtained at the nanotesla (nT) level or even lower. At present, in the process of designing a magnetic shielding device, most of the external environmental magnetic field settings are set at the size of the Earth’s environmental magnetic field, but the instruments inside the magnetic shielding device need to be powered, the active compensation coil needs to be powered, and the degaussing coil of passive shielding layer needs to be powered, so substations need to be used around magnetic shielding devices. The magnetic field generated by the substation will affect the magnetic shielding device, so this paper analyzes and measures the magnetic field generated by the substation. Firstly, the finite element model of a substation is established, and the influence of different substations on the environmental magnetic field is analyzed by changing the power. Secondly, the test method of a substation environment magnetic field is determined. Finally, the site test was carried out to measure the influence of different power substations and different distances on the magnetic field, and its influence on the magnetic shielding device was analyzed, which provided an important basis for the construction of the magnetic shielding device.

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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