lecture13- Control of Generation

lecture13- Control of Generation - EEL 6266 Power System...

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Unformatted text preview: EEL 6266 Power System Operation and Control Chapter 9 Control of Generation © 2002, 2004 Florida State University EEL 6266 Power System Operation and Control 2 Generation Control c Optimal dispatch and scheduling of generation establishes the best operation point with respect to economics c The operating point must be implemented via generation control r local generator control for each individual generator r energy control center for the control of a large utility and the flow of power across interconnections to other utilities r regional control over several utilities and the Independent Power Produces, IPP’s c ISO - Independent System Operator c RTO - Regional Transmission System Operator © 2002, 2004 Florida State University EEL 6266 Power System Operation and Control 3 c Many generators supply power to the transmission system r consumer loads are constantly changing the power level r some control means needed to allocate the load changes to the generators c a governor on each unit maintains mechanical speed (electrical frequency) c supplementary control acts to allocate generation s influences the power output s control signal usually originates at a remote control center Overview of Control Problem generation control system power system turbine-generator unit turbine-generator unit measurements of generator electric power output measurement of system frequency measurements of tie-line flows to neighboring systems control signals © 2002, 2004 Florida State University EEL 6266 Power System Operation and Control 4 c Definition of important terms s ϖ = rotational speed s α = rotational acceleration s δ = phase angle of a rotating machine s T net = net accelerating torque in a machine s T mech = mechanical torque exerted on the machine by the turbine s T elec = electrical torque exerted on the machine by the generator s P net = net accelerating power s P mech = mechanical power input s P elec = electrical power output s I = moment of inertia for the machine s M = angular momentum of the machine • all quantities, except for the phase angle, are expressed in per unit on the machine base and/or the standard system frequency base • steady-state and nominal values have a “0” subscript added Generator Model generator turbine electrical energy mechanical energy T mech T elec © 2002, 2004 Florida State University...
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This note was uploaded on 07/15/2011 for the course EEL 6266 taught by Professor Thomasbaldwin during the Fall '04 term at FSU.

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lecture13- Control of Generation - EEL 6266 Power System...

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