Lecture Methods of Electric power systems analysis - Lesson 2: Power systems overview provide students with knowledge about electric frequencies and residential voltages worldwide; historical electric utility organization; transmission and distribution; three phase transmission line; heating is a major concern that can quickly lead to loss of transformer life; . | ECEN 615 Methods of Electric Power Systems Analysis Lecture 2 Power Systems Overview Prof. Tom Overbye Dept. of Electrical and Computer Engineering Texas A amp M University overbye@ Announcements Start reading Chapters 1 to 3 from the book mostly background material We ll be using PowerWorld Simulator fairly extensively in this class both the educational and professional versions Download the free 42 bus educational versions of PowerWorld Simulator at https gloveroverbyesarma 1 Electric Frequencies and Residential Voltages Worldwide Image Source wiki Mains_electricity_by_country media File World_Map_of_Mains_Voltages_and_Frequencies 2 Historical Electric Utility Organization Traditionally electric utilities were vertical monopolies within a particular geographic market they had an exclusive franchise This has changed in many places around the country In return for this exclusive franchise the utility had the obligation to serve all existing and future customers at rates determined jointly by utility and regulators. 3 Generation Large plants have predominated up to 1500 MW Natural Gas 40 and coal 21 are most common sources followed by nuclear 20 wind hydro and solar Wood is geothermal Coal was at least 50 of the total up to 2007 New construction mostly wind solar and natural gas with wind and solar energy costs now quite low Sources are by energy not capacity 5 2019-4 2020 source US EIA 4 US Electricity Generation Source EIA Monthly Energy Review July 2020 5 US Generator Capacity Additions Natural gas and wind generation additions in the last decade dwarfed all other technologies but with solar rapidly growing. The gas generation and low natural gas prices were partially responsible for the recent decrease in carbon dioxide emissions Sources todayinenergy id 25432 6 New Generation May 2020 to April 2021 Sources EIA Electricity Monthly May 2020 7 The World Energy .
