An electrical substation is a facility that transforms voltage levels in the electrical power system. It connects high-voltage transmission lines to lower-voltage distribution networks, ensuring that electricity can be safely delivered to homes and businesses. Substations contain various equipment, including transformers, circuit breakers, and switches, which help manage the flow of electricity. Substations play a crucial role in maintaining the reliability and efficiency of the power grid. They help regulate voltage levels, protect against overloads, and facilitate the distribution of electricity over long distances. By doing so, they ensure that consumers receive a stable and continuous power supply.