Increasing Power System Transmission Capacity

Higher education teachers: Mihalič Rafael

Subject description

Prerequisits:

• Vpis v letnik

Content (Syllabus outline):

Development concepts of modern electrical power systems (EPS), transmission congestion issues in ENTSO-E interconnection, technical limitations in long-distance electrical energy transmission, comparison between alternating current (AC) and direct current (DC) transmission, increasing EPS transmission capacity by following modern concepts, examples of past EPS events/disturbances with high impact on EPS operation and introduction of possibilities for their avoidance, Flexible AC Transmission System (FACTS) concept, FACTS devices – basic principles, first generation of FACTS devices, second generation of FACTS devices, shunt FACTS devices, series FACTS devices, combined series-shunt FACTS devices, high voltage direct current (HVDC) transmission, impact of FACTS devices on EPS operational parameters, FACTS applicability (dynamic load-flow control, oscillation damping, transient stability enhancement, voltage control, voltage collapse prevention), modelling of FACTS devices for load-flow studies, modelling of FACTS devices for direct stability assessment methods, modelling of FACTS devices for dynamic EPS phenomena studies.

Objectives and competences:

• Being familiar with and understanding the limitations of electrical energy transmission,
• knowing basic conceptual differences between direct current (DC) and alternating current (AC) transmission: pros and cons, specifics of both concepts,
• being acquainted with load-flow control possibilities in electric power systems and
• Flexible AC transmission system concept.

Intended learning outcomes:

Student gets acquainted with long-distance transmission limitations that occur in EPS and basic principles of development of modern EPS. Based on actual past EPS events (blackouts) and assumptions of availability of hypothetical possibilities for blackout mitigation the motivation for studying appropriate devices (FACTS) that might be useful in the process of avoiding blackout is provided. Student becomes familiar with the concept of basic types and generations of FACTS devices. The mains stress is put on EPS’s point of view in the context of possible impacts of different FACTS devices control. Focus is put on FACTS devices modelling for different types of EPS studies, as FACTS is considered as relatively new technology.

Learning and teaching methods:

• Lectures,
• practical laboratory courses

Study materials

1. Flexible ac transmission systems (FACTS) / edited by Yong Hua Song and Allan T. Johns. – London : IEE, cop. 1999. – (IEE power and energy series ; Vol. 30).
2. E. Acha, C. R. Fuerte-Esquivel, H. Amirez-Perez, C. Angeles-Camacho: "FACTS - Modelling and Simulation in Power Networks", John Wiley & Sons, Chichester 2004.
3. Kalyan K. Sen, Mey Ling Sen: "Introduction to Facts controllers, IEEE Press, 2009.
4. Naran G. Hingorani, Laszlo Gyugyi: "Understanding FACTS", IEEE PRESS, New York 1999