Multifunctional system protection for transmission lines based on phasor data

Transmission network control and protection can be enhanced using phasor data. In a first step multifunctional line protection with system protection function set and back up protection function set can be created. The Matlab model was developed using the experience from the operation of existing wide area system and expended with new function sets. The paper presents multifunctional protection system and different types of disturbance scenarios with which the model was evaluated and from which the conclusion were drawn. Obtained indices as a result of simulation process can be useful for further development and definition of criteria for the implementation of wide area protection algorithm.