Multi-physical modeling: An integrated way of understanding the dynamics of electric grids

This paper presents the modeling and simulation of a subsynchronous resonance using Simscape in a multi-physical environment. It is shown that through this new modeling approach it is possible to visualize and better understand how the mechanical and electrical systems interact with each other during a subsynchronous resonance. The use of multi-physical domain simulation allows engineers and designers to comprehend sophisticated and complex systems with interactions among several physical domains. It also helps to find flaws and foresee potential interaction problems. A subsyncronous resonance case is used as an example to demonstrate the utility of the tool.