Electromagnetic compatibility and protection of electric energy meters from strong magnetic fields

被引：4
|
作者：
Diahovchenko, Illia M. [1 ]
Olsen, Robert G. [2 ]
机构：
[1] Sumy State Univ, Dept Elect Power Engn, UA-40007 Sumy, Ukraine
[2] Washington State Univ, Sch EECS, Pullman, WA 99164 USA
来源：
ELECTRIC POWER SYSTEMS RESEARCH | 2020年 / 186卷
关键词：
Current transformer; Electricity non-technical losses; Magnetic field; Power meter; Pulse transformer; Shielding;
D O I：
10.1016/j.epsr.2020.106400
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Power theft through electric energy meters tampering causes significant revenue losses. One of the meter tampering method involves manipulation using strong magnetic fields to distort the process of energy calculation by saturation of current transformers' cores. This paper presents an approach towards effective shielding of the power meters' sensitive elements from external magnetic fields. The theory of magnetic materials and the methods to calculate magnetic fields in the presence of these materials are used to develop a refined protective shield.
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页数：10
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