電力系統のイベントベース慣性推定における地点別周波数を用いた慣性中心周波数の推定

抄録

This letter deals with estimation of COI (center of inertia) frequency from globally measured frequencies. Total inertia of a power system can be estimated based on the equation of motion of COI frequency. COI frequency is expressed by the weighted average of angular speeds of generators in general. We approximate COI frequency by a weighted average of locational frequencies. Determination of weights is guided by the monotonous nature of COI frequency.