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Considerations Regarding Implementing Wide Area Monitoring, Protection and Control in North – East of Romanian Power Grid

High voltage transmission and distribution lines are main elements in a power system to improve the service to the customers. The major disturbances which happen in power system are stopped by the action of the control and protection systems, thereby reducing the impact of disturbances on it. The continued development of measurement and communication technologies in these systems provides rapid detection and ways to eliminate those disturbances to avoid rapid propagation of tripping cascade throughout the system. Using measurements from synchrophasors in real time based on Phasor Measurement Units (PMUs), can be applied in different types of extended area protection, emergency control systems to improve the security management of power system. Therefore synchronized phasors measurements by using of PMUs, offer a variety of solutions to problems from North – East of Romanian power grid such as: detection of the faults in transmission line using PMU, zone-3 protection blocking etc.