Signals, Dynamics and Control

Code:

PDEEC0002

Acronym:

SDC

Keywords
Classification	Keyword
OFICIAL	Electrical and Computer Engineering

Instance: 2024/2025 - 1S

Active?	No
Responsible unit:	Department of Electrical and Computer Engineering
Course/CS Responsible:	Doctoral Program in Electrical and Computer Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
PDEEC	0	Syllabus	1	-	6	42	162

Teaching language

English

Objectives

Acquisition of advanced knowledge on the mathematical models used to describe the electric power system and their components, to allow the development of stability and dynamic behavior analysis studies. Understand the different dynamic phenomena that can appear in a power system, resulting from disturbances, which may lead to loss of system security. Be familiarized with the tools and methodologies that can be used to study and solve these problems.

Learning outcomes and competences

- Be able to master the modeling of a multi-machine system, comprising the network, loads, synchronous generators with their excitation systems and frequency regulation systems, suitable for time domain analysis studies.

- Be capable of using dynamic simulation software for the purpose of developing transient and dynamic analysis.

- Be capable of understanding several dynamic phenomena that arrive during normal and abnormal operating conditions that follows system disturbances.

- Understand the operation and management of the load-frequency control systems in interconnected power systems, namely in ENTSO-E.

- Identify the nature of power system oscillations and characterize such oscillations using modal analysis. Be familiar with power system stabilizers and the procedures for tuning these controllers to increase the damping of electromechanical modes of oscillation.

- Be aware of the methodologies used to apply automatic learning techniques in the development of on-line dynamic security assessment tools for power systems.

 

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Basic courses about power systems operation and steady-state analysis of power systems.

Program

- Detailed description of the models usually used to perform time domain analysis of power systems that include synchronous generators with excitation system and load-frequency regulation.

- Description of the control behavior and management of primary, secondary and tertiary load-frequency control systems in large interconnected power systems.

- Modeling and performance analysis of the Automatic Generation Control system in interconnected power systems.

- Modeling and study the dynamic response of the primary and secondary load-frequency control systems following system disturbances (load changes or loss of generation), using simulation software.

- Analysis of power system oscillations due to the lack of damping torque at the generators rotors. Study of these phenomena using linearized models of the power system around an operating point and using eigenvalue-based methods. Review of the concepts of eigenvalue analysis of linear systems, addressing the linearization of the state equations, the construction of the linear model in the canonic state space form and the physical meaning of eigenvalues, eigenvectors, participation factors, residues and controllability and observability factors.

- Design of power system stabilizers (PSS) by using modal analysis for improving the damping of electrotechnical oscillation modes.

- Application of automatic learning techniques in order to provide fast dynamic security assessment of power systems.

Mandatory literature

Kundur, Prabha; Power system stability and control. ISBN: 0-07-035958-X

Teaching methods and learning activities

Classes will, most of the time, include lectures from the teacher. Two oral presentations are expected from students, reporting conclusions from their oriented study and research in specific domains (2 assignements). In these cases, open discussions will be fostered.

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	50,00
Trabalho escrito	50,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Estudo autónomo	88,00
Frequência das aulas	42,00
Trabalho de investigação	70,00
Total:	200,00

Eligibility for exams

Having a minimum grade of 50% in each assignment and also a minimum grade of 50% in the exam

Calculation formula of final grade

0,5 * Exam + 0,25* 1st Assignment + 0,25 * 2nd Assignment.

Examinations or Special Assignments

1st Assignment: State of art review of advanced techniques for load modeling suitable for dynamic behavior analysis.

2nd Assignment: Analysis of the frequency dynamic behavior of diesel and hydro synchronous generators, following system disturbances, through the use of dynamic simulation software.

Special assessment (TE, DA, ...)

These students will be subject to all evaluation procedures of regular students, i.e., they must deliver their assignments specified during the course plus any special works also specified plus a final exam, the only difference towards regular students being that they are not required to attend classes and deliver assignments in the same dates as regular students, in the cases the law specifically states it.

Classification improvement

According to FEUP regulations

Observations

Bibliography • P. Kundur, Power System Stability and Control, New York: McGraw-Hill, 1994. • G. Rogers, Power System Oscillations, M. A. Pai, Ed., Norwell: Kluwer Academic Publishers, 2000. • M. A. Pai, D. P. S. Gupta, and K. R. Padiyar, Small Signal Analysis of Power Systems. Harrow: Alpha Science International, 2004.