The Influence of a Shunt Facts Devices on Distance Relay Using IEEE Bus System

This study suggests a novel method for resolving transmission line protection concerns when FACTS devices are connected. In order to maintain the voltage at the necessary level, reactive power must be injected or absorbed by the Static Synchronous Compensator (STATCOM), a shunt-type FACTS device installed in the center of the transmission line. This link affects the capacity of the distance protection relay to operate in the event of a line breakdown. Faults are identified by using the energy of the phase signal detail coefficients and the artificial neural network technique. Faults are determined employing the energy value of the phase data detail coefficients and the ANN algorithm. To calculate the current ratio factor, one can use the following methods: the transmission line's zero sequence compensation factor; the shunt compensation phase current; the zero sequence current at the relay position; and the shunt compensation zero sequence current for LG and LL mho relay units. A typical distance relay's algorithm will begin to change the equations used to calculate apparent impedance as soon as the distance it measures exceeds mid of the entire line impedance.