Estimation of WECC System Inertia Using Observed Frequency Transients

Abstract

Computer models being developed to understand the interaction between demand-response technology, power system deregulation, and market transformation depend in part on understanding the relationship between system frequency and load control. Frequency, load, and plant outage events data collected over the last several years have permitted analysis to determine the Western Electricity Coordination Council system's inertia during each event. This data were used to evaluate the relationship of system inertia to total load, which is used to model system response to load curtailment programs in next-generation power system simulations.