Due to the structure of the high-rise building and its high electricity demand, it is required to design a distribution substation to meet the required demand as well as a vertical and a horizontal power supply to distribute the power inside the building. However, designing a distribution substation has been always a great challenge for electrical engineers because it should meet the consumers’ demand with minimal risks while following the country’s standards. The main aim of this project is to design a distribution system for a specific high-rise building. In this project, a load study is presented for each floor and for the emergency load to be able to design a suitable transformer that can withstand the total load and a backup generator to handle the emergency load. Furthermore, a power factor correction equipment is designed to increase the power factor of the low voltage panel. Then, the length and the size of each cable that connects the low voltage room to the feeders is determined to be able to compute the voltage drop value, since it affects the efficiency of the cables if it exceeds a specific range. Moving to the protection part, the protective devices are designed to prevent any fault in the system such as the circuit breaker and the current transformer. The circuit breaker and current transformer sizes are determined using the rated current. Any distribution system should be designed with strong earthing system due to its significance as it protects the system from any excessive current as well as protecting the electrical equipment from being damaged. At the end, all of these calculations and studies are described in detail and tested using manual calculations.
(A Brief Presentation of the Senior Design Project)
