Electromagnetic Analysis of Underground Cables for Upcoming Smart City : Case Study

Govt of India has aimed to create 100 smart cities with the help of recent technological advancements. In the state of Tamil Nadu, the capital and an industrial city Chennai is going to become a smart city soon. Presently most of the electrical systems used in Chennai are overhead systems, and these systems were severely damaged by Vardah cyclone on Dec 2017. It took more than a weeks' time to restore the power supply to the city. The idea behind smart city is to monitor and protect the system from unexpected outages. By converting the overhead systems into underground systems, uninterrupted power supply can be provided. EMI studies have become an important part in planning & implementation of power systems, design of high voltage power apparatus, healthcare etc. Whenever underground systems are planned, it is essential to perform EMI studies as a part of design procedure. The objective of this paper is to analyze the EMI produced by these underground power cables and to determine the optimized value of the radius of the cable using Genetic Algorithm (GA) also understand the remedies to suppress the exposures within safe limits. EMI studies have been conducted using Ansys 2019.