This course focuses on transmission technology of electric power, on which modern society heavily depends. Topics include equivalent circuit for a power system component, per-unit system, power circular diagram, fault analysis, and angle stability of a power system.
At the end of this course, students will be able to:
1) Understand how electric power is delivered through a power system;
2) Construct an equivalent circuit of a power system;
3) Understand transmission characteristics of a power system under normal and fault conditions
power system, three-phase circuit, active and reactive power, transmission line, power transformer, synchronous generator, equivalent circuit of a power system component, per-unit system, voltage control, fault analysis, symmetrical components, angle stability, protection relay, power distribution
Intercultural skills | Communication skills | Specialist skills | Critical thinking skills | Practical and/or problem-solving skills |
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- | - | ✔ | - | - |
1) Lectures are given based on the materials distributed through OCW-i. Students are required to make preparation and review with the materials.
2) Students must submit a report on exercise problems assigned in each class.
3) Solutions to the problems assigned in the previous class are explained at the beginning of each class.
Course schedule | Required learning | |
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Class 1 | Outline of a power system: system configuration and apparatus | Explanation of the roles of a power stations and substation |
Class 2 | Three-phase circuit and complex power | Construction of a single-phase equivalent circuit for a sample three-phase circuit |
Class 3 | Modeling of a transmission line | Calculation line constants for a sample transmission line |
Class 4 | Modeling of a power transformer | Construction of a single-phase equivalent circuit for a three-phase transformer with wye-delta connection, etc. |
Class 5 | Modeling of a synchronous generator for power system analysis | Calculation of a short-circuit current for a salient-pole synchronous generator |
Class 6 | Per-unit system | Construction of an impedance map in per-unit for a sample power system |
Class 7 | Transmission of electric power and power circle diagram | Calculation of the reactive power required to keep the voltage at a receiving end to a specified value |
Class 8 | Solving exercising problems with the explanation on the problems | Assessing the level of understanding for classes 1-7 |
Class 9 | Reactive power and voltage control | Explanation of the supply-and-demand balance of reactive power in a transmission line (overhead line and cable) |
Class 10 | Symmetrical components | Derivation of a formula for a fault current in case of three-phase short circuit, etc. |
Class 11 | Fault analysis of a power system | Calculation of e fault current of a sample power system during a phase-to-ground fault, etc. |
Class 12 | Neutral grounding | Calculation of the voltage for unfaulted phase during a phase-to-ground fault, etc. |
Class 13 | Angle stability | Construction of a power-angle curve for a sample power system |
Class 14 | Power system protection and current interruption | Explanation of the features of various types of an voltage transformer |
Class 15 | Power distribution | Calculaion of the voltage drop (rise) along a sample distribution line |
Okubo, Hitosh, et al., "Electric Power System Engineering," Ohm-sha.
1) All the materials used in a class can be found on OCW-i.
2) Textbook: Ohkubo, Hitoshi: "Power System Engineering," Ohm-Sha
3) Reference books
Hayashi, Izumi: "Power System," Shokoudoh;
Yasuoka, Kouichi: "Electric Power Engineering," Ohm-sha;
Michigami, Tsutomu, "Power Transmission and Distribution," IEEJ.
Students' course scores are based on midterm (45%) and final exams (45%) in addtion to report (10%).
Students are required to have basic knowledge on electric circuit and electric machinery.