Undergraduate Courses
Industrial Electronics
| Code: | 3.6.3388.5 |
| Category: | Obligatory |
| Semester: | 5 |
| Lecture Hours – Lab hours: | 2 – 2 |
| Lecturers: | Aris Dimeas, Antonios Antonopoulos, Stavros Papathanassiou, Panagiotis Rovolis (T & R Associates) |
Course Description
Theory section: Introduction to industrial electronics. Power semiconductors. Introduction to Electronic Power Converters: Uncontrolled and controlled rectifiers (AC / DC), DC-DC converters, AC converters (AC / AC) and power inverters (DC / AC). Principles of control of AC and DC electric motors and electric drive systems. Electronic controllers for industrial motors. Elements of industrial electrical installations and automation. PID control in industrial applications. Introduction to PLCs. Application of microprocessors and digital signal processors (DSP) in the industrial environment. Basic concepts of power quality. Introduction to the use of the SPICE program for the simulation of electronic power circuits.
Laboratory section: Analysis of simple electronic setups that include rectifier circuits (AC / DC) using diodes and thyristors and control of electric motors with power electronic inverters (DC / AC).
Power System Analysis (Steady State)
| Code: | 3.6.3308.7 |
| Category: | Obligatory (half flow E) |
| Semester: | 7 |
| Lecture Hours – Lab hours: | 3 – 1 |
| Lecturers: | Aris Dimeas , Nikolaos Hatziargyriou, Nikolaos Kimoulakis (T & R Associates) |
Course Description
Steady State generator models (d-q reactances, vector diagrams, active and reactive power), Effect of angle δ and excitation voltage on the active and reactive power of a synchronous machine, Machine overexcitation and underexcitation, Transmission Line and Transformer models in load flow analysis, Power balance equations, Compensation by static capacitors and inductors, Digital methods for load flow analysis, Fast Decoupled methods, parallel operation of electric machines, transformers with tap-changers, Voltage and reactive power regulation, Voltage regulating transformers, Regulation with static and synchronous capacitors, Voltage Stability and Collapse.
Power System Analysis (Asymmetrical and Transient State)
| Code: | 3.6.3313.8 |
| Category: | Obligatory (main flow E) |
| Semester: | 8 |
| Lecture Hours – Lab hours: | 3 – 1 |
| Lecturers: | Aris Dimeas , Nikolaos Hatziargyriou, Vasileios Nikolaidis |
Course Description
Transient models of synchronous machines, Transient models of asynchronous (induction) machines, Transient and sub-transient impedances and time constants, Fault currents and fault levels, Equivalent system impedance, Short-circuit of generators under load, Short-circuit of power electronics interfaced generators, Symmetrical fault analysis, Asymmetrical three-phase systems, Sequence components (positive, negative, zero) and circuits, sequence components of rotating machines and transformers, Asymmetrical faults, Multiple network faults, Earthing effects on short-circuit voltages, Asymmetrical loading of transformers, Analysis of complex line impedances, Asymmetries in three-phase transmission lines, Clarke Transformation.
Supervision and Management of Energy Systems
| Code: | 3.6.3313.8 |
| Category: | Obligatory by selection (flow E) |
| Semester: | 8 |
| Lecture Hours – Lab hours: | 2 – 2 |
| Lecturers: | Aris Dimeas , George Korres, Nikolaos Kimoulakis (T & R Associates) |
Course Description
Basic principles of conventional industrial automation. Applications of relays and digital controllers in energy and industrial plants. Sensors of digital signals (buttons, contacts, photocells, limit switches, thermal relays, undervoltage relays) and transducers of analog signals (voltage, current, power, flow, pressure).Programmable logic controllers (PLC) and supervisory control and data acquisition (SCADA) systems. Industrial communication protocols (Industrial Ethernet, Profibus, Modbus, Instabus). PLC programming languages (Statement List-STL, Ladder Logic-LAD, Function Block Diagram-FBD). PLC applications (electric networks, motor control, level and flow control, conveyor belts). Laboratory exercises with realistic systems.
Energy Control Centers
| Code: | 3.6.3314.8 |
| Category: | Obligatory by selection (flow E) |
| Semester: | 8 |
| Lecture Hours – Lab hours: | 3 – 1 |
| Lecturers: | George Korres, |
Course Description
Description and operation of energy control centers. Distributed and parallel operation of energy control centers. State estimation for transmission and distribution power systemsusing measurements from SCADA/RTUs and smart meters. Identification of errors in measurements, network topology, and network parameters. Applications of synchronized phasor measurement units (PMUs) in energy control centers and state estimation. Equivalent networks (Norton, Dimo). Security assessment and sensitivity analysis of power systems. Sparse matrix techniques. Applications of artificial intelligence techniques in power system analysis and control. Computer applications with sparse matrix algorithms.
Power System Protection
| Code: | 3.6.3224.9 |
| Category: | Obligatory by selection (flow E) |
| Semester: | 9 |
| Lecture Hours – Lab hours: | 3 – 1 |
| Lecturers: | George Korres, |
Course Description
Principles of power system protection from phase faults (three-phase and two-phase to earth) and ground faults (single-phase and two-phase to earth). Operational principles and main types of relays. Overcurrent, differential, distance, and directionalrelays. Protection of transformers and electric machines (generators and motors). Protection of buses, reactors, and capacitors. Adaptive protection of distribution networks with distributed generation. Principles of digital protective relays. Power system protection analysisusing software tools. Laboratory applications of digital protective relays.