2021 Electric Power Engineering I

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Academic unit or major
Undergraduate major in Electrical and Electronic Engineering
Fujita Hideaki  Kawabe Kenichi  Sano Kenichiro 
Course component(s)
Lecture    (ZOOM)
Day/Period(Room No.)
Tue5-6(W242)  Fri5-6(W242)  
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 the corresponding equivalent circuits to power systems;
3) Calculate imbalanced voltage, current, and/or impedance in power systems under fault conditions;
4) Obtain the voltage stability in transmission/distribution systems and the steady-state stability of generators.


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

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills
・Applied specialist skills on EEE

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 Per-unit system Application of per-unit system to a electric circuits
Class 4 Electric power distribution systems generatorConfigurations, devices, and basic characteristics of distribution systems
Class 5 Electric power transmission systems Configurations, devices, and basic characteristics of transmission systems
Class 6 Modeling of a synchronous generator for power system analysis Calculation of a short-circuit current for a salient-pole synchronous
Class 7 Modeling of power systems Derive equivalent circuits of power systems
Class 8 Symmetrical components Derivation of a formula for a fault current in case of three-phase short circuit, etc.
Class 9 Fault analysis of a power system Calculation of e fault current of a sample power system during a phase-to-ground fault, etc.
Class 10 Neutral grounding Types and functions of grounding and voltage/current unbalance in power system
Class 11 Structure of transmission and distribution systems Explanation of the structure of transmission and distribution networks
Class 12 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 13 Reactive power and voltage control Explanation of the supply-and-demand balance of reactive power in a transmission line (overhead line and cable)
Class 14 Angle stability Construction of a power-angle curve for a sample power system

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.


All the materials used in a class can be found on OCW-i.

Reference books, course materials, etc.

1) All the materials used in a class can be found on OCW-i.
2) Reference books
Ohkubo, Hitoshi: "Power System Engineering," Ohm-Sha;
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 reports in the first half (50%) and the later half (50%).

Related courses

  • EEE.C201 : Electric Circuits I
  • EEE.C202 : Electric Circuits II
  • EEE.P301 : Electric Machinery and apparatus

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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