Design and Implementation of Transmission Line Safety System (Line to Line and Line to Ground) Fault Detection

Transmission lines play a vital role in delivering electrical power from generation stations to consumers. However, these lines are exposed to environmental conditions that may cause faults such as Line-to-Line (L- L) and Line-to-Ground (L-G) faults. These faults can lead to excessive current flow, which may damage electrical equipment and interrupt power supply. This project presents a transmission line safety system designed to detect such faults quickly and protect the power network. The system continuously monitors the line current using sensors. When the current exceeds the normal limit, an overcurrent relay detects the fault and sends a signal to the circuit breaker to isolate the faulty section. By disconnecting the affected part of the transmission line, the system helps prevent equipment damage and improves the reliability of the power supply. The proposed system provides a simple, fast, and effective solution for transmission line fault detection and protection.