Calculation of power systems inertia and frequency response

Fundamental changes are taking place in the way that electricity is produced and consumed. These changes are raising concerns related to the deterioration of Inertial and Frequency responses. This paper presents a method to calculate the value of these responses using the data from system disturbances that result in sudden loss of generation. The method has very modest data and computational requirements and has a number of practical applications such as monitoring the deterioration of these responses over time. The method is illustrated by applying it to an actual generation loss incident on the Eastern Interconnection.