This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Power Systems I Power System Analysis c Fundamentals of Power Systems (EEL 3216) r basic models of power apparatus, s transformers, synchronous machines, transmission lines r simple systems s one feeder radial to single load c What more is there? r large interconnected systems s multiple loads; multiple generators r why have large interconnected systems? s reliability; economics r analysis of the large system s flow of power and currents; control and stability of the system s proper handling of fault conditions; economic operation Power Systems I Modern Power Systems c Power Producer r generation station s prime mover & generator s stepup transformer c Transmission Company r HV transmission lines r switching stations s circuit breakers s transformers c Distribution Utility r distribution substations s stepdown transformers r MV distribution feeders s distribution transformers Power Systems I Network Layout c HV Networks r Large quantities of power shipped over great distances r Sharing of resources s Improved reliability s Economics of large scale c MV Networks r Local distribution of power r Numerous systems s Economics of simplicity s Autonomous operation c Loads r Industrial & Commercial r Residential Power Systems I System Control c Network Protection r Switchgear s instrumentation transformers s circuit breakers s disconnect switches s fuses s lightning arrestors s protective relays c Energy Management Systems r Energy Control Center s computer control s SCADA  Supervisory Control And Data Acquisition Power Systems I Computer Analysis c Practical power systems r must be safe r reliable r economical c System Analysis r for system planning r for system operations r requires component modeling r types of analysis s transmission line performance s power flow analysis s economic generation scheduling s fault and stability studies FAMUFSU College of Engineering Chapter 2 AC Power Power Systems I SinglePhase Power Consumption ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 { } ( 29 { } ( 29 v v m m i v i v i v m m i v m m i m v m t I V t I V t p I I V V t I V t p B A B A B A t t I V t i t v t p t I t i t V t v θ ϖ θ θ ϖ θ θ θ θ θ θ ϖ θ θ θ ϖ θ ϖ θ ϖ θ ϖ + + + + = = = = + + + = + + = + + = = + = + = 2 sin sin 2 cos 1 cos ) ( 2 2 2 cos cos ) ( cos cos cos cos cos cos ) ( ) ( ) ( cos ) ( cos ) ( 2 1 2 1 2 1 energy flow into the circuit energy borrowed and returned by the circuit i ( t ) v ( t ) Power Systems I Average Active (Real) Power ( 29 { } ( 29 ( 29 { } ( 29 ( 29 ( 29 I V P pf I V P dt t dt t dt t t I V dt t p P t I V t I V t p v v v v = = = = = + + + + = = + + + + = ∫ ∫ ∫ ∫ θ θ ϖ ϖ θ θ ϖ θ θ ϖ π θ θ ϖ θ θ ϖ π π π π cos cos sin cos sin 2 sin cos 2 cos 1 ) ( 2 1 sin 2 sin cos 2 cos 1 ) ( 2 2 2 2 Power Systems I...
View
Full Document
 Spring '11
 THOMASBALDWIN
 Electrical Engineering, Alternating Current, Power factor, Electricity distribution

Click to edit the document details