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©2012 | Commercial in Confidence | Proprietary to Ventyx, An ABB Company NYISO Real-time Market Presentation to ERCOT METF – April 26, 2012 Confidential | ©2012 Ventyx, An ABB Company | 1
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Ventyx real-time market implementations with look-ahead capability NYISO RTC – Real Time Commitment RTD – Real Time Dispatch Pricing Load and storage devices Network Constraints Summary Questions Agenda ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 2
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Ventyx Real-time market with Look-Ahead capability implementations ISORTDRTCOnline Dates NYISO XX1999 SMD2: 2005 IESO X2001 MIO: 2004 CAISO XX1998 RTMA: 2004 National Grid UK XX2013 ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 3
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Goals of NYISO Real-time Market Schedule commitment of fast-start generators Schedule transactions for RTM Dispatch energy, reserves and regulation at five-minute intervals Take into consideration future known events in making current scheduling decisions Consider network security Allow system and area regulation and reserve constraints Include Automatic Price Mitigation Have rapid re-dispatch (and recovery) in case of unplanned events (RTD-CAM) ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 4
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Time Scales of Real-Time Scheduling for Normal Operation Real-time Commitment (RTC) Schedules fast-start units and transactions Produces advisory energy, regulation, reserve and LMP schedules Run every 15 minutes for next 2 ½ hours Transactions include hourly and 15 minute transactions Real-time Dispatch (RTD) Schedules energy, regulation and reserves Commitment and transactions fixed Run every 5 minutes for up to 65 minutes ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 5
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RTC Time Line ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 6
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RTD Time Line ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 7
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RTC Overview RTC solved using SCUC Additional inputs: unit initial generation and real-time network status (from State Estimator) Schedules Fast Start units and transactions Hourly transactions must be constant over hour 15-minute transactions are scheduled by RTC as regular resources Uses AMP to mitigate pricing If market power determined, base prices used in RTD Fast-start Management function ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 8
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RTC-AMP The Real-Time Commitment - Automatic Mitigation Process (RTC-AMP) is a real-time mitigation function that executes every 15 minutes on the quarter hour RTC-AMP runs in parallel with RTC to evaluate the effect of Market Participants real-time bids and applies mitigation measures as required by market rules RTC-AMP can be enabled and disabled by setting RTC-AMP flag. If the RTC-AMP flag is set to “NO”, both RTC and RTC- AMP are identical since there is no mitigation measure required ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 9
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Allows operations staff to: Approve/disapprove startup/shutdown decisions of RTC Initiate startup or shutdown of fast-start unit Finalized commitment schedules are respected by subsequent RTD and RTC runs Fast Start Management ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 10 RTC- AMP RTC FSM RTD RTD-CAM GT Commitment
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RTD Overview Dispatch energy, regulation and reserves from: Generators Internal Dispatchable Load Commitments, hourly and 15-minute interchanges are fixed 5-minute NY-HQ transactions are scheduled by RTD Uses Security Constrained Economic Dispatch Same as SCUC except commitment fixed ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 11
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RTD-CAM (RTD Corrective Action Mode) Responds to abnormal system conditions Short look-ahead for fast basepoint Execute on demand or periodically after first initiation RTD-CAM Modes: Reserve Pickup, one ten-minute step with 7 minute ramp time Uses emergency response rate If necessary commit 10-min GTs With or without network model update Basepoint As Soon As Possible, one five-minute step Use normal response rate No Commitments Commitment as needed, commit 10-min GT if necessary Maximum Generation Pickup, one five-minute step and commit all available 10- minute GTs Units ramped at maximum rate in selected zones Re-sequencing Run, two five-minute steps ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 12
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NYISO Market Place Dynamics ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 13
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LMP calculated from the RTD multi-step optimization dispatch GTs can set price. Separate pricing run where: Set GT incremental cost equal to average cost Set GT low limit to 0 Make-whole payment considering start up cost, no-load cost and energy. Guarantee that each unit gets paid at least its production cost. Calculate area reserve and regulation MCPs Generator reserve costs are zero MCP based on lost opportunity cost Demand curve for reserve and transmission Pricing ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 14
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Demand-side resources Can bid synch or non-synch reserves If bid synch reserve => zero startup and mingen cost If bid non-synch reserve => zero mingen cost Pump storage (PS) No reservoir modeling Schedules pumping or generating based on input cost curve Fly-Wheel (LESR) Only supplies regulation – no energy Not used if regulation demand curve is non-zero Not used in RTD-CAM Limits for first interval limited by available energy Load and Storage Devices ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 15
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Models losses Iterative Network Constraints ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 16 Network Security Monitor Network Constrained Unit Commitment
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NYISO MMS system includes the following: An integrated system to handle various operation issues Fast-start generation commitment Look-ahead dispatches and price signals Emergency operation Real-time price mitigation Rigorous coupling of network security and optimization for system reliability Consistent price setting rules in all markets Summary ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 17
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Questions ? ©2012 Ventyx, An ABB Company Presentation to ERCOT METF April 26 2012 18 Thank You
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