DEE-24106 Electric Power Systems, 5 cr
Person responsible
Nida Riaz, Ari Nikander
Lessons
| Implementation | Period | Person responsible | Requirements |
| DEE-24106 2018-01 | 3 |
Ari Nikander Nida Riaz |
To attend the lectures; to pass the one final exam (60% of grade) and to complete the course assignments (40% of grade) |
Learning Outcomes
Student having taken the course should understand the principles of how an electrical power system is planned and operated. They are expected to model and analyse the steady-state and dynamic performance of simple power systems using: power flows; short-circuit fault current calculations and the various forms of power system stability assessments. Student should be able to carry out simulation studies of practical power systems operating under steady-state and dynamic conditions using commercial power system analysis software; to check the sanity of the simulation results by resorting to basic theory; to assess the operation of the actual power system under study and to produce a well laid-out simulations report.
Content
| Content | Core content | Complementary knowledge | Specialist knowledge |
| 1. | Week 1. Transmission Line Performance: Active and reactive power flows in short, medium and long transmission lines, SIL. Principles of compensation | Week 1. Transmission Line Performance: Standing waves and basic concepts of corona effects | Week 1. Transmission Line Performance: At harmonic frequencies |
| 2. | Week 2. Power Flow Analysis: Basic theory, power flow solution algorithms (e.g.. Newton-Raphson, Fast Decoupled) | Week 2. Power Flow Analysis: Computer-based power flow solutions of medium and large-scale power systems | Week 2. Power Flow Analysis: Sparse matrix techniques Three-phase power flows |
| 3. | Week 3. Short-Circuit Analysis: Background theory, fault level and the representation of classical power system faults | Week 3. Short-Circuit Analysis: Power flow-initialized short-circuit analyses Advanced transformer modelling | Week 3. Short-Circuit Analysis: Dynamics of short-circuits, circuit breaker selection and protection relay studies |
| 4. | Week 4. Grid Operation & Frequency Control: Principles and hierarchy of frequency control at electricity market. Primary and secondary frequency control. General principles of grid operation in today’s power industry: Transmission system congestion management, Power balance management and Reserves. | Week 4. Grid Operation & Frequency Control: Area control error. Automatic generation control using SCADA and EMS systems. Advanced principles of grid operation and frequency control | Week 4. Grid Operation & Frequency Control: Dynamics of grid operation and frequency control |
| 5. | Week 5. Voltage Control & Stability: Equipment for voltage control and reactive power compensation. Primary voltage control. Voltage control principles in Finland. Basics of voltage stability and voltage collapse. Voltage stability analysis methods: PV- and VQ-curves. | Week 5. Voltage Control & Stability: Secondary voltage control. Modelling of SVC, tap changer and polynomial loads in Newton-Raphson power flows. | Week 5. Voltage Control & Stability: Dynamics of voltage control FACTS equipment |
| 6. | Week 6. Power Systems Stability: Stability classification, swing equation, power-angle equation and equal-area criterion. Classical model of synchronous machine. Analysis of simple systems | Week 6. Power Systems Stability: Analysis of multi-machine systems, combination of dynamic and static equations, factors influencing angle stability. Introduction to small signal stability | Week 6. Power Systems Stability: State-space presentation of large-scale power systems for small signal stability analysis |
| 7. | Week 7. Power system harmonics: | Week 7. Power system harmonics: | Week 7. Power system harmonics: |
Instructions for students on how to achieve the learning outcomes
Exam (60%) Assignments (40%)
Assessment scale:
Numerical evaluation scale (0-5)
Study material
| Type | Name | Author | ISBN | URL | Additional information | Examination material |
| Book | Modern Power System Analysis | D. P. Kothari & I. J. Nagrath | 0-07-049489-4 | Applicable chapters: 4, 5, 6, 8, 9, 10, 11, 12, 15 | Yes | |
| Lecture slides | Ari Nikander | Yes | ||||
| Online book | Electric Energy Systems | A. Gomez-Exposito, A.J. Conejo and C. Canizarez | 9781420007275 | Applicable chapters: 1,2,3,8,9,10 | Yes |
Prerequisites
| Course | Mandatory/Advisable | Description |
| DEE-23106 Fundamentals of Electrical and Power Engineering | Mandatory |
Correspondence of content
| Course | Corresponds course | Description |
| DEE-24106 Electric Power Systems, 5 cr | SET-6316 Electric Power Systems, 5 cr |