Electrical Transmission and Distribution Lecture 1 Introduction The subject Distribution System and Substation Design has the following objectives: 1. 2. 3. Provide students with the skills needed to understand, design and develop new technologies and applications in the field of Power System; Prepare professionals in an environment that combines electrical engineering practice and technical research to contribute to the growing body of electrical engineers in the sectors of the industry, business and government; and Promote a culture of research and an active agent of extension works. Suggested References: •Analysis of Faulted Power Systems by Paul M. Anderson •Introduction to Electric Power System Technology by Theodore Bosela •Elements of Power System Analysis, 4th Edition by William D. Stevenson, Jr., McGraw-Hill Inc., c 1984 •Power System Analysis by Hadi Saadat, McGrawHill, c 2004 •Power System Analysis & Design, 5th Edition by Glover, Sarma and Overbye, Cengage Learning Asia Pte Ltd, c 2012 References Generation, Transmission and Distribution Generation, Transmission and Distribution Three Single-Phase Circuits Three Phase Circuit Positive vs. Negative sequence Balanced Three-Phase Circuit Balanced Three-Phase Circuit Advantages of Balanced Three-Phase Systems Review Problem 1 Line-to-Neutral (Phase) Voltage Line-To-Line Voltage Line Current Review Problem 2 Three-Phase Circuit Connections Delta Connected Load Line Current Vs. Phase Current Delta-Wye Load Transformation Review Problem 3 Review Problem 4 References for Additional Review Problems Ans. 1732A, 255MW Additional Review Problem 1 Ans: Is = 0.2∟60⁰ , Ic=0.1732∟90⁰ Additional Review Problem 2 Ans: V1=125.37∟0⁰, I2=103.41∟120⁰ Additional Review Problem 3 Find V1 and current I2 Additional Review Problem 4