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Power Stations

Power Stations . Introduction. References. S. W. Blume: Electric Power System Basics F. Janíček et al.: Renewable Energy Sources. Power system. E lectricity power system (PS). Electricity prices.

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Power Stations

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  1. Power Stations Introduction

  2. References • S. W. Blume: Electric PowerSystemBasics • F. Janíček et al.: RenewableEnergySources

  3. Powersystem • Electricity power system (PS)

  4. Electricityprices • In standard regulated monopoly markets, electricity rates typically vary for residential, commercial, and industrial customers. • Prices for any single class of electricity customer can also vary by time-of-day or by the capacity or nature of the supply circuit, for industrial customers, single-phase vs. 3-phase, etc. • If a specific market allows real-time dynamic pricing, a more recent option in limited markets to date typically following the introduction of electronic metering, prices can even vary between times of low and high electricity network demand.

  5. Structure of electricbill • Service Charge • PrimaryEnergyCost • Amount of ElectricityUsed • Taxes • TransmissionService

  6. Energyrequired • Net generation and physical exchanges of electrical energy

  7. Global Energy: Where Does it Come From? * Ultimately derived from our sun Courtesy David Bodansky (UW)

  8. Composition of Electricity • About 40% of our energy consumption is carried out at electrical power plants • Sources are diversified (2011 figures): • 46% coal • 21% nuclear • 20% natural gas (growing most rapidly) • 8% hydroelectric (3% of the input is hydro: it’s efficient) • 3% wind • 1% biomass • 0.8% petroleum • 0.5% other (geothermal, solar in 9:1 ratio)

  9. Common Themes • 99.9% of these turn generators to make electricity • all but solar photovoltaics • 97% power generators are turbine-based • all but wind, solar PV • 89% of turbines powered by heat/steam • all but hydroelectric, wind, solar PV • includes coal, petroleum, gas, nuclear, etc.

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