Implementing distributed generation to mitigate under-frequency load shedding

Abstract

This paper proposes a strategy for employing distributed generation units to stop the frequency deterioration resulting from severe disturbances in electrical distribution systems rather than relying on load shedding as the obtainable treatment. Also, sufficient comparison is made between both treatment methods. Low order system frequency response model (SFR) is used to estimate the frequency deviation. The model parameters are adjusted when the system is equipped with the distribution generation units. The amounts of load to be shed or the power to be delivered by DGs are compared and the treatment method that presents better dynamic response specifications is recommended.