Resilient Frequency Estimation for Renewable Power Generation Against Phasor Measurement Unit and Communication Link Failures

Abstract

The increasing penetration of distributed energy resources aggravates the frequency fluctuation of modern power generation systems. In this context, the brief endeavors to propose a frequency estimation method. By simultaneously considering the phasor measurement unit (PMU) and communication link failures and modeling them as independent Bernoulli process, we formulate some linear matrix inequalities-based sufficient conditions, from which the resilient estimation gains capable to ensure the mean-square stability and robust performance of the estimation error system can be automatically selected. Validation results illustrate the superiority of the proposed method over existing ones under different probabilities of PMU and communication link failures.