GE-LS2100 静态启动变频器.pptVIP

RESERVOIR DE-IONIZER REDUNDANT PUMPS Temperature Regulator 80 degrees F Photos What is the LCI used for? A.) Provides excitation to the generator B.) Control turbine firing. C.) Drive the turbine to self sustaining speed. D.) Provide additional generator power E.) Reduce NOX emmisions What are the benefits of the LCI vs. electric motor or diesel? A.) One LCI can start multiple units. B.) Shorter drive train. C.) Less moving parts therefore less maintenance. D.) All of the above The LCI changes the generator/motor speed by? A.) Regulating the generator field B.) Changing the voltage magnitude applied to the stator C.) Changing the current magnitude applied to the stator D.) Switching the rate and sequence of DC power applied to the stator windings E.) Applying a pulse width modulated waveform to the stator windings What is the purpose of the LCI cooling water. A.)Cool generator Stator B.) Cool rotating components in the LCI C.) Cool generator rotor D.) Cool LCI control circuits E.) Cool SCR’s Why is the cooling water de-ionized?. A.) Cooling water is in contact with the conduction circuit B.) Cooling water is in close contact with the conduction circuit C.) All plant water is de-ionized D.) Prevent water from freezing E.) Accumulate ions for testing Which statement is most correct? A.) The maximum AC voltage in the control cabinet is 480VAC B.) The maximum DC voltage in the control cabinet is 125VDC C.) The maximum AC voltage in the Pump Panel is 480VAC D.) The maximum voltage behind the front and rear doors of the Source and load bridges is 5600VDC. E.) All of the above Where is this component located? In the control core In the thyristor cabinet In the cooling water panel Outside the Static Starter cabinet On top of the generator The Static Starter is only used : a) For emergency use only b) After the turbine reaches 90% speed c) When the Gas Turbine cannot start d) For water wash only e) For every Gas Turbine startup Harmonics Harmonic Ord