Improving inter-area oscillations damping of power systems through cooperative active power control of distributed energy resources

The remarkable growth of power electronics-interfaced renewable generations in the electric power grid has the potential to pronounce the effect of frequency disturbances such as inter-area oscillations. These low-frequency disturbances reduce transmission lines capacity, and at worst even damage the power grid infrastructures. In this paper, we propose a novel control algorithm to eliminate inter-area oscillations modes based on local measurements of frequency and the system's global average frequency. The performance of the proposed solution is investigated on different multi-machine test systems with classic and detailed electromechanical dynamic models through modal analysis and time-domain simulations. The modal analysis results indicate that all the inter-area modes are damped for all test cases. Time-domain simulations also demonstrate that the proposed control not only takes the system to near-zero inter-area oscillations but also improves other power system stability measures such as transient stability and frequency nadir.

Grantor dc:publisher

University of Tennessee at Chattanooga

Author dc:creator

• Macedo, Pablo

Contributors dc:contributor

• Disfani, Vahid R.
• Karrar, Abdelrahman A.; Ofoli, Abdul R.; Ahmed, Raga
• College of Engineering and Computer Science

• Automatic frequency control
• Eigenvalues
• Electric power system stability
• Mathematical models
• Modal analysis

Licence

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English, eng

Repository record dc:identifier

https://scholar.utc.edu/theses/729

OAI identifier oai:identifier

oai:scholar.utc.edu:theses-1890