Measurement of Extremely Low-Frequency Emissions from Compact Distribution Substations in Proximity to Commercial Areas in Sibu

Abstract

Distribution substations are a critical component of the electricity distribution network . They step down high transmission voltages to levels usable by consumers . The output capacity of each substation varies depending on its location and the energy needs of the population in that area. For this reason, substations are constructed and installed as per the load requirements of the area. Working substations produce electromagnetic fields (EMF). The level of these fields can differ according to the design of the substation, the configuration of its equipment and its application. This paper studies the level of extremely low frequency (ELF) electromagnetic fields produced by the tiny distribution substations in the Unicity’s business area, Sibu. Measurements were taken to determine whether ELF exposure levels are safe for the environment. The measurement process took into account temperature, humidity and presence of shielding materials, as these factors could influence the EMF values measured. The purpose of this study is to establish the intensity of ELF emissions from small power plants and to compare the intensity to limits established by the International Commission on Non-Ionizing Radiation Protection. The study’s findings are intended to provide individuals a clearer picture of how much EMF they are exposed to near tiny substations and to assist in recommendations to make them safer and more compliant with the standards.