HARMONic stabilitY assessment of PE-penetrated power systems

An open-source C++ based framework capable of simulating all components in hybrid power systems stability assessment studies.

Seconds-level CPU-scale runtime
Hybrid AC/DC VSC-HVDC system focus
Framework diagram Work packages Plotting support

< About Harmony >

Harmony will deliver a mathematical framework capable of simulating all components in hybrid power systems (HPS) for stability assessment studies. The tool is designed to be comprehensive and user-friendly for analyzing stability and mitigating instabilities in the power systems of interest.

It will efficiently investigate multi-terminal HVDC systems (offshore/onshore), transmission–distribution interconnections, controller interoperability, and HVDC protection. Existing commercial tools typically require costly equipment, long model-development cycles, and time-consuming simulations (minutes to hours). In contrast, Harmony targets execution times of several seconds on general-purpose CPUs.


< Citation >

If you use the Harmony code in your work, please cite Advanced simulation framework for AC/MTDC power systems .

A. Lekić, A. Kermansaravi, H. Li, Y. Q. Lares, S. Alsarayreh, R. Dimitrovski. arXiv preprint arXiv:2606.09406, 2026.


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