Evaluating the Dissipating Energy Flow (DEF) Method for Locating the Source of Sustained Oscillations in Power Systems with High Penetration of Inverted-Based Resources (IBRs)

Date

2024

Authors

Pakravan, Mohammadamin

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Abstract

This research study is concentrated on "Evaluating the Dissipating Energy Flow (DEF) Method for Locating the Source of Sustained Oscillations in Power Systems with High Penetration of Inverter-Based Resources (IBRs)". Sustained oscillations in power systems fall into two categories, natural or free oscillations and forced oscillations. Both oscillations, if happens, can make detrimental effects on the system such as uncontrolled cascading outages or undesirable mechanical vibrations leading to reducing components lifespan and increasing equipment failures.

For the past two decades with increasing penetration of renewable energy resources in power systems, power engineers and researchers have been trying to find a way to mitigate the oscillations. Meanwhile, locating the source of oscillations is considered as the most effective way. Lots of method have been proposed like travelling wave-based, damping torque-based, mode shape estimation and etc. However, none of them are reliable enough for practical applications except energy-based method that has been promising to utilize in online environments.

Dissipating Energy Flow (DEF) method, which is a modification of the original energy-based method, is built and implemented in PSCAD tool to measure the flow of dissipating energy in every generation unit when the system is subjected to a disturbance. In this research study, DEF function has been validated by testing in 240-bus power system.

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Keywords

Oscillation source location, Dissipating Energy Flow, Inverter-Based Resources

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Department

Electrical and Computer Engineering