Synchrophasor data for oscillation source location

Abstract

Synchrophasor data have a range of applications, from planning, market operation to reliability operation. Oscillation source location (OSL) is among the most successful synchrophasor applications in today's control rooms, which identifies the equipment destabilizing the system. Having such equipment identified in a timely manner offers real-time, actionable information to grid operators, which is critical for mitigating such dynamic risks and improving system reliability. In the past two decades, many OSL methods have been proposed based on different principles. Synchrophasor data have captured many real-life oscillation events and helped approach a more comprehensive explanation of the oscillation phenomenon in power systems: from natural mode oscillations to forced oscillations, from non-resonance conditions to resonance conditions, from model-based analysis methods to data-driven analysis methods or hybrid methods using both model and data. In addition to the significant progress in both theory and application of OSL, it cannot be denied that all the existing OSL theories are not complete, yet, and there are still rooms to improve the engineering practice of OSL.This chapter starts with a literature review of existing OSL methods, and then focuses on a promising OSL method, named dissipating energy flow (DEF) method , and its latest applications. Specifically, detailed studies on longitudinal power systems are presented to reveal more insights into DEF's practical effectiveness and capability. Subsequently, DEF analysis results on multiple cases from the 2021 IEEE-NASPI Oscillation Source Contest are presented and discussed.