Electric Power Systems

At the end of this learning unit, the student is able to :

In view of the LO frame of reference of the "Master Electrical Engineering", this course contributes to the development, acquisition and evaluation of the following learning outcomes:

• AA1.1, AA1.2, AA1.3
• AA2.1, AA2.2
• AA3.3
• AA6.1

Specifically, at the end of the course, students will be able to:

1. Architecture of electrical systems:

• Describe and explain the main features, functionality and procedures of public electricity transmission and distribution networks and industrial distribution networks

2. Modelling tools and calculation:

• Establish and use the equivalent circuit of a symmetrical three-phase network with or without neutral,
• Explain the principles of the calculation in relative units (per unit) and use them as part of the resolution of numerical problems,
• Explain and interpret the physical components of Fortescue
• Use the Fortescue components to analyze situations and solve problems relating to the operation of unbalanced networks

3. Power grids components:

• Describe and explain the operating principles of transformers, their coupling modes, their conditions of use in parallel. Describe, explain and use their equivalent circuits,
• Explain the physical bases and principles for calculating primary and secondary parameters of overhead lines; explain the PI equivalent scheme of power lines and its simplified versions,
• Explain the physical principles of the complex power transmission on a power line, the notions of characteristic impedance and natural power,
• Describe and explain the phasor diagram of a generator connected to a power grid,
• Explain the concepts of gross and net power produced by a generator; calculate the active and reactive power exchanged between a generator and the network to which it is connected through a coupling transformer.

Use all of these concepts to analyze practical situations and solve problems (numerical exercises).

4. Design and operation of power systems:

• Explain the fundamentals of computing power flow in a meshed network and manually apply them in simple situations,
• Analyze and interpret the results of a calculation of power flow obtained using specialized software tools
• Explain the different voltage control techniques, discuss the criteria for choosing a proper technique in a given situation, solve problems related to voltage control,
• Explain the principles of frequency primary control and secondary load-frequency control and apply them in practical situations,
• Explain the basic principles of tertiary control of the generation of electrical energy (economic dispatching) and apply them in simple practical situations,
• Manually calculate balanced and unbalanced short circuit (fault) currents in simple situations,
• Explain the basic principles of the protection of transmission and distribution networks and apply them in practical situations.

Transversal learning outcomes:

• Structure, detail and present an engineering calculation report
• Use professional software tools ("commercial" software)