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|
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|
|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 (50%) and final exams (50%).
Students are required to have basic knowledge on electric circuit and electric machinery.