Accurate, consistent and dependable information is the basis for an efficient operational system and becomes crucial to making the right decisions in the event of a power system fault. A Protection Data Management System (PDMS) provides all concerned departments of the utility easy access to accurate and reliable information gathered by protection related devices, to aid faster and easier finding and solving of problems. [1] This paper briefly describes the changes made in the last years and focuses on a practical usage of a utility-wide monitoring application using some functions available in modern numerical devices.
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