Locate the Source of Resonance-Involved Forced Oscillation in Power Systems Based on Mode Shape Analysis

TL;DR

This paper introduces a mode shape analysis method to identify the source of resonance-involved forced oscillations in power systems by comparing oscillation mode shapes, verified through actual U.S. EI system examples.

Contribution

It presents a novel approach that uses mode shape comparison to locate the source of resonance-involved forced oscillations in power systems.

Findings

Effective in identifying oscillation sources in real power systems

Mode shape difference correlates with the oscillation source location

Validated with actual U.S. EI system data

Abstract

This paper proposed a new method to locate the source of forced oscillation that involves resonance with natural oscillation modes. The new method is based on comparing the oscillation mode shape of the forced oscillation with that of the natural oscillation that the forced oscillation resonating with. The location that has the largest angle difference between the forced oscillation mode and the natural oscillation mode usually indicates the location of the driving force in forced oscillations. Some examples in actual U.S. EI system verified this approach.