Power Frequency Magnetic Field Reduction Method for Residents in the Vicinity of Overhead Transmission Lines Using Passive Loop

다국어 초록 (Multilingual Abstract)

A power frequency magnetic field reduction method using passive loop is presented. This method can be used to reduce magnetic fields generated within the restricted area near transmission lines by alternating current overhead transmission lines. A reduction algorithm is described and related equations for magnetic field reduction are explained. The proposed power frequency magnetic field reduction method is applied to a scaled-down transmission line model. The lateral distribution of reduction ratio between magnetic fields before and after passive loop installation is calculated to evaluate magnetic field reduction effects. Calculated results show that the passive loop can be used to cost-effectively reduce power frequency magnetic fields in the vicinity of transmission lines generated by overhead transmission lines, compared with other reduction methods, such as active loop, increase in transmission line height, and power transmission using underground cables.

참고문헌 (Reference)

1 "www.who.int/peh-emf"

2 PJ Verkasalo, "Risk of cancer in Finnishchildren living close to power lines" 307 : 895-899, 1993

3 "Research on Safety Assessment and ReductionTechnology for ELF EMF(Final Report)" KoreaElectrotechnology Research Institute 2008

4 ICNIRP Guidelines, "Guidelines for limiting exposureto time-varying electric, magnetic, andelectromagnetic fields (up to 300GHz)" 1998

5 P. Lorrain, "Electromagnetic Fields andWaves" 1970

6 J. Nafziger, "DNA mutations and 50 Hz EMfields" 30 : 133-141, 1993

7 A Myers, "Childhood cancer and overheadpowerlines: A case-control study" 62 : 1008-1014, 1990

8 DA Savitz, "Case-control study of childhoodcancer and exposure to 60-Hz magnetic fields" 128 : 21-38, 1988

9 JRN McLean, "Cancer promotion in a mouseskinmodel by a 60-Hz magnetic field: II. Tumordevelopment and immune response" 12 : 273-287, 1991

10 "Biological Effects of Power Frequency Electric andMagnetic Fields" NTIS 1989