GAS TURBINE COMBINED- CYCLE GENERATION POWER PLANT STABILITY MODELS AND MODEL VALIDATION Juan S. Santos Senior Consultant, System Planning

What are ERCOT concerns: All Studies are trash !!

TITANIC = ERCOT

Purpose of RFP Approach Open PROCESS Open PROCESS Stakeholder - Value added Stakeholder - Value added Group Process Group Process Funding $$$ Funding $$$ Future Model Development Future Model Development

ELEMENTS OF RFP TASK 1: Collect field data from measurements to validate models TASK 1: Collect field data from measurements to validate models TASK 2: Validation of existing models in ERCOT base case simulations and through field measurements TASK 2: Validation of existing models in ERCOT base case simulations and through field measurements TASK 3: Development of New CC Models as Required. TASK 3: Development of New CC Models as Required. –Requires validation in ERCOT base case simulations and through field measurements TASK 4: Training in utilization of NEW models TASK 4: Training in utilization of NEW models

VALIDATION ? Do the models work in our system Do the models work in our system Requires “ Volunteers ” Requires “ Volunteers ” Generic–one size fits all (?) Generic–one size fits all (?) Time and Effort Time and Effort $$$ $$$

STABILITY GAS TURBINE MODEL DEVELOPMENT More questions ? More questions ? Existing models – Valid ? Existing models – Valid ? –capture the effects for all of the studies that we do? What models need to be developed ? What models need to be developed ?

MODELING REQUIREMENTS Control Block Diagrams Control Block Diagrams Incorporated in the PTI PSSE program and model library. Incorporated in the PTI PSSE program and model library. Validation that the numerical model responds the same as the “real world”. Validation that the numerical model responds the same as the “real world”. Flexible Model Flexible Model Account for both Real and Reactive power under steady state and dynamic studies Account for both Real and Reactive power under steady state and dynamic studies Source Code - FORTRAN Source Code - FORTRAN

VERY ROUGH COST ESTIMATE Model Development $125,000 to $200,000 Model Development $125,000 to $200,000 Travel/Meetings $10,000 to $20,000 Travel/Meetings $10,000 to $20,000 Validation /Testing $50,000 to $80,000 Validation /Testing $50,000 to $80,000 Data Research $20,000 to $30,000 Data Research $20,000 to $30,000 Monitoring Equipment $20,000 to $30,000 Monitoring Equipment $20,000 to $30,000 Totals estimated at $225,000 to $360,000 Totals estimated at $225,000 to $360,000

DRAFT TIME TABLE

SYSTEM UNSTABLE ?