2016 Electric Power Engineering I

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Academic unit or major
Undergraduate major in Electrical and Electronic Engineering
Nanahara Toshiya 
Course component(s)
Day/Period(Room No.)
Mon1-2(S222)  Thr1-2(S222)  
Course number
Academic year
Offered quarter
Syllabus updated
Lecture notes updated
Language used
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Course description and aims

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.

Student learning outcomes

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

Competencies that will be developed

Intercultural skills Communication skills Specialist skills Critical thinking skills Practical and/or problem-solving skills

Class flow

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

  Course schedule Required learning
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 Reactive power and voltage control Explanation of the supply-and-demand balance of reactive power in a transmission line (overhead line and cable)
Class 9 Symmetrical components Derivation of a formula for a fault current in case of three-phase short circuit, etc.
Class 10 Fault analysis of a power system Calculation of e fault current of a sample power system during a phase-to-ground fault, etc.
Class 11 Neutral grounding Calculation of the voltage for unfaulted phase during a phase-to-ground fault, etc.
Class 12 Angle stability (1) Construction of a power-angle curve for a sample power system
Class 13 Angle stability (2) Examining angle stability for a sample power system with equal-area method
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.

Reference books, course materials, etc.

1) All the materials used in a class can be found on OCW-i.
2) Referencebooks
Hayashi, Izumi: "Power System," Shokoudoh;
Yasuoka, Kouichi: "Electric Power Engineering," Ohm-sha;
Michigami, Tsutomu, "Power Transmission and Distribution," IEEJ.

Assessment criteria and methods

Students' course scores are based on midterm (50%) and final exams (50%).

Related courses

  • ICT.I207 : Linear Circuits
  • EEE.P301 : Electric Machinery

Prerequisites (i.e., required knowledge, skills, courses, etc.)

Students are required to have basic knowledge on electric circuit and electric machinery.

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