We introduce a novel framework to approximate the aggregate frequency dynamics of coherent generators. By leveraging recent results on dynamics concentration of tightly connected networks, and frequency weighted balanced truncation, a hierarchy of reduced-order models is developed. This hierarchy provides increasing accuracy in the approximation of the aggregate system response, outperforming existing aggregation techniques.
@article{arxiv.1909.12864,
title = {Accurate Reduced-Order Models for Heterogeneous Coherent Generators},
author = {Hancheng Min and Fernando Paganini and Enrique Mallada},
journal= {arXiv preprint arXiv:1909.12864},
year = {2021}
}