دانلود مقاله انگلیسی هماهنگی کارآمد رله های فرکانسی و ROCOF برای حفاظت توزیع با استفاده
از نرم افزار منطقه ای ( IEEE)
Efficient Coordination of ROCOF and Frequency Relays for Distributed Generation Protection by Using the Application Region
: Abstract
This paper proposes a method for determining the coordination of the rate of change of frequency (ROCOF) and under/overfrequency relays for distributed generation protection considering islanding detection and frequency-tripping requirements. The method is based on the concept of application region, which defines a region in the trigger time versus active power imbalance space where frequency-based relays can be adjusted to satisfy the anti-islanding and frequency-tripping requirements simultaneously.Thismethodcanbeusedtooptimallydeterminethe instantaneousandtime-delaysettingsofdifferentfrequency-based relays in a unified manner. The application region can be also employed to evaluate how much an existing frequency-based protection scheme violates one of the above-mentioned requirements. In addition, it can be used to set different combinations of frequency-based relays inorderto makethe distributedgenerator frequency-based protection system as efficient aspossible, since it respects the region that satisfies both requirements
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دانلود مقاله انگلیسی هماهنگی کارآمد رله های فرکانسی و ROCOF برای حفاظت توزیع با استفاده از نرم افزار منطقه ای ( IEEE)