Master the mathematical modeling of transmission lines to analyze steady-state performance, enabling accurate calculations of efficiency, voltage regulation, and power transfer limits.
This on-demand webinar, through slides and discussions, goes over the general case of two-port electrical networks and applies the insights gained from discussion of these to the study of transmission lines and their steady-state operation. The webinar covers the operation of short-length, medium-length, long-length, and lossless aerial transmission lines. The lumped parameter models of the short- and medium-length lines are presented, and the equations from the distributed model of long transmission lines are given. Equations for the general case of long transmission lines are modified to represent equations of lossless lines.
The ABCD parameters of each type of line are presented and used in the calculation of voltages and currents. The relationship between sending-end and receiving-end voltages and currents is covered in detail, and examples of each are given with solutions fully discussed. Voltage regulation of lines is introduced and calculated in different examples. Power transfer between sending and receiving ends of each of the line types is covered. Transmission power loss is calculated for each scenario, and the efficiency of transmission lines in transferring power to the load is found for various examples.
Surge impedance for lossless lines is defined and calculated, and the importance of surge impedance loading and its effect on the voltage profile is covered. The wavelength and speed of propagation of power on lossless transmission lines are covered. The equation for power transfer capacity of these lines in terms of rated voltage, displacement angle, surge impedance, and line length is given. The condition for maximum power transfer and its equation is given and discussed. Voltage regulation of lossless lines under different loading conditions is calculated.
Since the calculation of the ABCD parameters of long lines is dependent on hyperbolic sine and cosine functions, a review of these two functions is also included. Each topic is immediately followed by well-chosen numerical examples and detailed steps leading to a solution to further enhance the learning experience. This on-demand webinar is intended for electrical engineers, as well as design personnel who are interested in learning the fundamentals of transmission line operations. Mastery of the topics covered in this webinar is expected of those engineers interested in a career in power systems analysis, operation, or design.
Professional Engineer with over 40 years of experience
Mr. Foad Alvandi is an online PDH course provider of continuing education for LearnFormula Mr. Alvandi holds a Bachelor of Science degree in Electrical Engineering and a Master of Science degree in Electrical and Computer Engineering from George Mason University. He is a registered Professional Engineer in the State of Maryland. Mr. Alvandi is a seasoned engineer with over 40 years of experience in the electrical and solar power industries, as well as a number of years of teaching experience. He is an adjunct professor with Johns Hopkins University and presently teaches the graduate-level “Introduction to Electrical Power Systems” course in their online EP (Engineering for Professionals) program. He has retired in recent years from full-time work in the industry, but continues to teach and keeps updated on the latest developments in the solar and electrical power industries in general.
