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This paper reviews the protection requirements for generators during periods of off-nominal frequency operation. It investigates the behavior of instrument transformers during these periods as well as the impact of frequency on the accuracy of protection operating quantities. Traditional methods for frequency tracking and compensation are reviewed. A novel approach, which provides excellent performance...
The Magat River Multipurpose project on the Luzon grid of the National Power Corporation of the Philippines consists of a four unit 450 MVA power-plant placed in service towards end of year 1983 and early 1984, providing an additional installed capacity of 360 MW to the existing generation peak capacity of 2478 MW [1] of the Luzon grid, which is the country' s largest grid with an installed capacity...
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