GE-LS2100-静态启动变频器课件.ppt

LS2100Static Start System,Course Objectives,Upon completion of this module the student will be able to:,1)Describe what the LCI is used for:,2)Describe how the LCI changes the speed of the generator/motor,3)Use a 1 line drawing to identify the major components in the LCI,4)Explain why the de-ionized water is used in the LCI,Use the Generator as a Motor to drive the turbine to self sustaining speed,What is the purpose of the LCI?,Theory of Operation,Theory of Operation,The LCI outputs power to the machine stator to create a rotating magnetic field in the stator,2)The exciter magnetizes the machine rotor,3)The rotating stator magnet pulls the rotor,4)The speed of the stator magnet is adjustable anddetermines the speed of the rotating parts,1)Switch closed,current flow _,2)Current flow in a stator winding will _in the stator iron,creates a magnet,create a magnet,Electromagnet,LCI inverter with switches,Switches 3&4 closed,Switches 4&5 closed,Magnet rotated 60 degrees,Switches 5&6 Closed,Switches 6&1 Closed,Switches 2&3 Closed,YES,Exciter ON creates a Rotor magnet,LCI On Exciter On,Red Stator coils indicate current flow in 2 of 3 Stator Windings creating a Stator magnet,Stator magnet pulls the rotor magnet,LCI On Exciter On,LCI On Exciter On,LCI On Exciter On,LCI Inverter,Major Equipment,4160 or6000,2080,2080,LCI Input Transformer,4160,2080,2080,LCI Input Transformer,4160,2080,2080,LCI Input Transformer,4160,2080,2080,LCI Input Transformer,4160,2080,2080,LCI Input Transformer,4160,2080,2080,LCI Input Transformer,4160,2080,2080,LCI Input Transformer,Cooling Water System,PUMP PANEL,USED TO REMOVE HEATFROM SCRS,PUMP PANEL,De ionized water provides extremely low electrical conductivity,Cooling water conductivity is continuously monitored,Closed Loop system with outdoor heat exchanger,Photos,Review,What is the LCI used for?A.)Provides excitation to the generatorB.)Control turbine firing.C.)Drive the turbine to self sustaining speed.D.)Provide additional generator powerE.)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 fieldB.)Changing the voltage magnitude applied to the statorC.)Changing the current magnitude applied to the statorD.)Switching the rate and sequence of DC power applied to the stator windingsE.)Applying a pulse width modulated waveform to the stator windings,What is the purpose of the LCI cooling water.A.)Cool generator StatorB.)Cool rotating components in the LCIC.)Cool generator rotorD.)Cool LCI control circuitsE.)Cool SCRs,Why is the cooling water de-ionized?.A.)Cooling water is in contact with the conduction circuitB.)Cooling water is in close contact with the conduction circuitC.)All plant water is de-ionizedD.)Prevent water from freezingE.)Accumulate ions for testing,Which statement is most correct?A.)The maximum AC voltage in the control cabinet is 480VACB.)The maximum DC voltage in the control cabinet is 125VDCC.)The maximum AC voltage in the Pump Panel is 480VACD.)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 coreIn the thyristor cabinetIn the cooling water panelOutside the Static Starter cabinetOn top of the generator,The Static Starter is only used:a)For emergency use onlyb)After the turbine reaches 90%speedc)When the Gas Turbine cannot startd)For water wash onlye)For every Gas Turbine startup,Harmonics,Harmonic Order,%Fundamental,5711131719,20149865,