GENERATOR EXCITATION AND CAPABILITY CURVE.pptx
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GENERATOR EXCITATION AND CAPABILITY CURVE.pptx
- 1. GENERATOR EXCITATION CAPABILITY CURVE DROOP CONTROL ASHWIN NARAYAN
- 2. GENERATOR AND GRID CURRENT FLOW E=V+IZ E= GEN INDUCED EMF V= GRID VOLTAGE I =CURRENT FLOW Z= TOTAL IMPEDANCE= R+L+C I E V GENERATOR GRID R L C
- 3. Phasor diagram for synchronous generator Grid voltage Field voltage Load angle Phase angle Stator current
- 4. What is the difference between phase angle and load angle • PHASE ANGLE : Angle between Grid voltage and Stator current • LOAD ANGLE: Angle between Excitation field voltage and Grid voltage
- 5. PHASOR DIAGRAM INTO GENERATOR CAPABILITY CURVE Phase angle. Multiplying by V/x
- 6. GENERATOR CAPABILITY CURVE VI MEGAWATT MEGAVAR LEADING PF LAGGING PF HEATING LIMITS
- 14. MW FREQUENCY 360 48 330 48.5 300 49 270 49.5 240 50 210 50.5 180 51 150 51.5 120 52 HERE OPERATING MW ASSUMED 240 DROOP SETTING AT +/-4% ON MAX SPEED (3000 RPM) OVERSPEED LIMIT AT 3300 RPM MW SETTING 17% OF EACH 1% SPEED DROP MW BIAS CLAMP +/-120 MW