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 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
|Specialist skills||Intercultural skills||Communication skills||✔ Critical thinking skills||Practical and/or problem-solving skills|
|✔ ・Applied specialist skills on EEE|
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||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|
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.
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.
Students' course scores are based on reports in the first half (50%) and the later half (50%).
Students are required to have basic knowledge on electric circuit and electric machinery.