Multi-objective Mathematical Programming to Simultaneously Control SCUC and OUPFC to Improve Power System Controllability

ABSTRACT

Security-Constrained Unit Commitment (SCUC) problem and subsequently employing Flexible AC Transmission Systems (FACTS) controllers including Optimal Unified Power Flow Controller (OUPFC) play a crucial role in power systems operation and control in terms of increasing the security of energy transmission networks. The principal objective of the SCUC problem is to acquire the minimum operating cost simultaneously maintaining the security of the system. In this paper, significant attention is paid particularly to simultaneously control SCUC and OUPFC, since energy loss reduction and transmission lines capacity release can be effectively achieved with incorporating SCUC and OUPFC, and subsequently setting the effective variables. In this regard, the SCUC problem with the presence of OUPFC is solved as Nonlinear Programming with Discontinuous Derivatives (DNLP) framework and the proposed algorithm is implemented on two IEEE 14-bus and IEEE 30-bus systems using General Algebraic Modeling System (GAMS) software in order to optimize the total fuel cost, power losses and cost of OUPFC installation as objective functions in the multi-objective framework. The simulation results show the capability of the proposed algorithm to simultaneously determine the optimal location of the OUPFC and its settings in the SCUC problem and to improve the controllability of the power system operation.

KEYWORDS:

• FACTS devices
• Multi-objective;  Nonlinear Programming with Discontinuous Derivatives (DNLP)
• Optimal location
• Optimal Unified Power Flow Controller (OUPFC)
• Security-Constrained Unit Commitment (SCUC)

Additional information

Notes on contributors

A. Lashkar Ara

A Lashkar Ara (M’11-SM’15) was born in Tehran, Iran. He received the BSc degree in electrical engineering from the Islamic Azad University, Dezful Branch, Dezful, Iran, in 1995, the MSc degree in electrical engineering from the University of Mazandaran, Babol, Iran, in 2001, and the PhD degree in electrical engineering from Iran University of Science and Technology (IUST), Tehran, Iran, in 2011. Currently, he is an associate professor at the Dezful Branch, Islamic Azad University, Dezful, Iran. His research interests include analysis, operation and control of power systems, FACTS controllers, optimization algorithms, and smart grids.

R. Sabour

R Sabour was born in Dezful, Iran. She received the BSc degree in electronic engineering and the MSc degree in electrical engineering from the Islamic Azad University, Dezful Branch, Dezful, Iran. Her research interests include analysis, operation and control of power systems and FACTS controllers. Email: [email protected]

M. Nasir

M Nasir was born in Dezful, Iran. He received the BSc and MSc degrees in electrical engineering from the Islamic Azad University, Dezful Branch, Dezful, Iran. He has published 8 books and presented more than 10 research papers in international and national journals and conference proceedings. Currently, he is an instructor and researcher at Materials and Energy Research Center, Dezful Branch, Islamic Azad University, Dezful, Iran. His research interests include power systems operation, FACTS devices, optimization algorithms, renewable energies and smart grids. Email: [email protected]