Measurement of PTP Synchronization Accuracy and Study of its Application to IP Networks of Japanese TSOs

In Japan, Transmission System Operators (TSOs) are transitioning from conventional synchronous multiplexing systems to IP-based communication networks. This shift introduces new challenges for systems with stringent requirements on sampling timing, such as transmission line protection relays and Phasor Measurement Units (PMUs). Achieving highly accurate sampling time synchronization over IP networks is essential for these applications.