ולידציה - SSO for Turbine Air Inlet Cooling
Schedule of System Operation - SSO Turbine Air Inlet Cooling This article is an elaborated example of a schedule of system operaton - sso we did for one of o…
פורסם:
Schedule of System Operation - SSO Turbine Air Inlet Cooling This article is an elaborated example of a schedule of system operaton - sso we did for one of our clients. Of course the actual documents contain all the operational and alarm parameters Scope This Schedule of System Operation (SSO) covers the required technical data and operation logic regarding the components of Turbine Air Inlet Cooling system, according to the Smartlogic's requirements and the client specifications System General Description :Turbine Air Inlet Cooling system contains two cold liquid circuits Primary - 4 chillers and their respective primary pumps Secondary - 2 pumps for each turbine inlet air cooling coil, 2 pumps for Cogen1, 2 pumps for Cogen2, and 2 pumps for the electric generator cooling (one operating and the other in standby Applicable Documents User Requirements Specification ( URS ) for Monitoring and Alarm System Parameters List Operational Parameters List Alarm Parameters List Operation Logic :Start Conditions of Chiller COND_SYS_RDY Signal is on Relevant pumps are waiting for our commands, including their corresponding valves OIL_PUMP_OK Signal is on READY Signal from MCC (C-025/RD) is on READY Signal from Chiller (JM-025/RD) is on ZS (Freeze protector) Signal is off, not indicating alarm : Running Logic for Chiller Start corresponding Reg_valve (condenser regulate valve) on 100% and wait until valve feedback indicating >= 95% Delay REG_VALVE_DLY_SP - 10 second :If number of operating chillers 2 Send signal to Start_cond_pump2 - Start Two Condense Pumps Verify from via communication that relevant cond_pump has Delay 20 seconds Perform PID on PDIT using Reg_valve according to relevant PDT-081-4_SP DeltaP SP (in manual and/or auto mode) Start CHW_Pump, chilled water pump Delay 30 second Verify relevant FS (flow) Signal is on for 20 seconds Start Chiller : Stop operation for each Chiller Delay 2 minutes , safety in case user changed the operation order of chillers from HMI Stop Chiller Wait for signal off from motor MCC feedback Delay 60 Sec If current chiller is 3 rd , Send signal to stop Cond_pump_2 If current chiller is 1 st , Send signal to stop Cond_pump_1 Close Reg_valve, condenser regulate valve Delay 30 Sec Stop CHW_Pump, chilled water pump Interlock : in any case, CHW_Pump will continue operating as long as the corresponding chiller is operating Consumers Pump activation User can always choose primary/secondary pump If demand cooling for cogen1/2 via .DI 20 for cogen 1, DI 21 for cogen 2 For first activation: Check TT-087 (supply water) is below SP +1 :Perform PID control with relevant Cogen-TT For Cogen-1 TE-315-022, for Cogen-2 TE-316-093 according to TT_315_022_SP / TT_316_093_SP using cogen-1/2 primary pump If PID control loop reaches >= START_HZ_SP activate secondary pump and Continue PID control loop with both primary and secondary pumps If both primary and secondary pumps at work and PID control loop reaches 2 then activate second pump Stop pumps using reverse order :Temperature control for generator valves Perform PID control with TT-090 according to SP using TV-088, If 316-J-21A operates Perform PID control with TT-090 according to SP using TV-089, If 316-J-21B operate :Start Conditions of Chiller sequence Demand Cooling at least from one of Cogen-1 / Cogen-2 / Generator. slot 4 DI-19-20-21 : Chiller sequence run-up Start first chiller according 6 The chilled water pump in the first chiller will start all the time even if we are not receive "chiller ready to start", we do need to receive "MCC ready" and do not receive "chiller shut down" . this function are necessary when the chiller stop in" low water temperature" Delay Run-up Start_Chiller_DelaySP delay - 10 minutes According to demand, start next chiller :Perform sequence control using the maximum calculated value from :{Flow measurement} calculation and {Temp measurement} calculation :By flow measurement Chiller #2 operates when total flow is > CH2_FLOW_SP + CH_FLOW_OFFSET_ SP Chiller #3 operates when total flow is > CH3_FLOW_SP + CH_FLOW_OFFSET_ SP Chiller #4 operates when total flow is > CH4_FLOW_SP + CH_FLOW_OFFSET_ SP Chiller #2 stops when total flow is <= CH2_FLOW_SP - CH_FLOW_OFFSET_ SP Chiller #3 stops when total flow is <= CH3_FLOW_SP - CH_FLOW_OFFSET_ SP Chiller #4 stops when total flow is <= CH4_FLOW_SP - CH_FLOW_OFFSET_ SP Total flow = FM1 + FM2…