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The paper describes the abstract concept of Process Bus defined in IEC 61850 9-2 and then focuses on the implementation agreement that ensures the interoperability between merging units and protection devices from different manufacturers. The components of the Merging Unit, the requirements for its performance and time synchronization are described. Protection and recording applications based on the...
Historically, the application of delayed auto-reclose and synchronising at mesh design substations has proven technically challenging, necessitating a bespoke and complex solution to providing this functionality. Coincident with the emergence of multifunctional relay- based solutions, circa 2000, National Grid recognised that both its asset replacement programme, and the expansion of the transmission...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.