Decentralized Non-linear Control for Improving the Electromechanical Transient Behavior of Multi-machine Power Systems

Abstract

A Hamiltonian multi-machine formulation is utilized for designing non-linear controllers with the purpose of helping to alleviate the electromechanical transient behavior after large disturbances. The controllers' design is based on a tracking problem, where the excitation voltage and the mechanical torque are employed as inputs. It is possible to utilize an observer for no accessible signals. The combined action of voltage and speed controllers achieves the objectives. Results are exhibited on two power systems in the open literature.

Keywords:

• power system stability
• non-linear control
• geometric control

Acknowledgment

Juan M. Ramirez thanks CONACyT-CFE under grant 88160.