Rotor Speed-Free Estimation of the Frequency of the Center of Inertia

Federico Milano
2018 IEEE Transactions on Power Systems  
This letter proposes a formula to estimate the frequency of the center of inertia based exclusively on measures of bus frequencies, obtained, for example, from phasor measurement units; the network admittance matrix; and two parameters of synchronous generators, namely, the inertia constant and the internal reactance. The proposed formula can be utilized on-line and requires a highly reduced set of measures of bus frequencies. The letter discusses the theoretical background of the proposed
more » ... f the proposed expression and tests it with a 1,479-bus model of the all-island Irish transmission system. Index Terms-Frequency estimation, center of inertia, frequency divider, phasor measurement unit.
doi:10.1109/tpwrs.2017.2750423 fatcat:syy7rvea5jfynnwiewez32xxly