GENERATOR EXCITATION AND CAPABILITY CURVE.pptx

this presentation includes description on generator capability curve and droop control

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

7. GENERATOR HEATING LIMITS

8. 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