Underground Power Grid Planning to Improve Electrical Reliabilityn

Abstract

Electric power distribution often experiences outages due to lightning strikes and/or broken cables due to broken tree branches. Innature supporting activities using electric  power, the power company consists of two power house sources with a capacity of 1500 kVA and 2000 kVA. Throughout 2019-2020, the average lightning strike based on isokeraunic level (IKL) was 39,175 per year. Power lines until 2020 use the air grid, lightning strikes on the power grid often occur and result in power supply cuts in buildings, damage to electrical and electronic equipment. To avoid blackouts/damage caused by the natural disturbances mentioned above, in 2021 we made a community service proposal to convert the air electricity network into an underground/underground electricity network. The method taken is to re-measure buildings that are electrified, mapped and determine connecting panels, for each group of buildings. Replacing existing overhead line cables replaced with special cables for underground lines. The designed conduit refers to the standards published by the General requirements of electrical installations, and the  international electrotechnical commission (IEC). The planning results were simulated for an inter-phase load balance of 2.021%, the highest voltage shrinkage of less than 1%. A lightning strike against a power line cable is equal to zero