Entergy Corporation · NYSE:ETR
Entergy — Technical Presentation (March 2004)
25 slides from Entergy's technical presentation, Mar 9, 2004
Slide 1: Available Flowgate Capacity (AFC) Market Training Session on AFC
Entergy Services, Inc Available Flowgate Capacity (AFC) Market Training Session on AFC Cameron Warren Transmission Business Operations Houston, TX March 9th, 2004 1
Slide 2: Topics of Discussion
Topics of Discussion Changes to the OASIS Redirects Scenario Analyzer Market trials Live demonstration of request submittal 2
Slide 3: What will change on OASIS?
What will change on OASIS? Contract path TTC/ATC, GOL values no longer posted or used to evaluate reservations Flowgate AFC Values will be used to evaluate reservations Flowgate AFC values can be viewed using the Query Offerings hyperlink under the Transmission Service section of OASIS Scenari
Slide 4: OASIS Changes (Continued)
OASIS Changes (Continued) Three of the current PORs and PODs will change to reflect registered names on TSIN website CSW will change to CSWS LAF will change to LAFA OGE will change to OKGE Must choose Source/Sink, POR/POD, but no longer have to pick the path Typical status flow change
Slide 5: Redirect policy - Current practice
Redirect policy Current practice A redirect is evaluated as a new request, with the original’s effects removed, if contract path ATC is unavailable, the request is refused Request #1: 100 MW confirmed Original CSWS SOCO Request #2: 100 MW received Redirect of #1 LAGN SOCO If contract ATC was zer
Slide 6: Redirect policy - Future Practice
Redirect policy Future Practice A redirect is evaluated to see if there is a larger impact on the original reservation flowgates or any constraints on new flowgates Request #1: 100 MW confirmed Original CSWS SOCO Impacts flowgates A,B,C Request #2: 100 MW received Redirect of #1 LAGN SOCO Impact
Slide 7: Scenario Analyzer
Scenario Analyzer The Scenario Analyzer is an OASIS module that allows Transmission Customers to evaluate availability for a Source and Sink pair, providing a “what if” scenario, but does not decrement ATC since no request has been submitted Scenario Analyzer uses the same form as the normal res
Slide 8: Scenario Analyzer cont.
Transmission Business Scenario Analyzer cont. Start Date and Time [Mar =] [9 +] [2004 +] [oo +]; Joo Stop Date and Time Request |Mar +] [10 +] [2004 =} [oo +]; Joo Posting EditProtile | | Analyze | — Study | Related Ref pewted Bet | Daily Firm PTP Capacity Requested Bid Price Preconfumed [~ foo POR
Slide 9: Scenario Analyzer cont.
Transmission Business Scenario Analyzer cont. Provider EES Service Daily Firm PTP Preconfurmed Deal Ref No POR POD EES AECI Source Sink ANO AECI Start Time Stop Time 03/09/2004 00:00:00 CS 03/10/2004 00:00:00 CS Lot Price Unit Price 0.0000 0.0000 Sufficient ATC Yes Explanatory Text Price Service NOT
Slide 10: Market trials
Market trials Market trails will be from March 10 at 9:00 AM CST until March 16, 2004 at 1:00 PM CST Test site: https://oasis.entergytransmission.com/oasis/ees Customers will be able to submit test requests to get a feel for the AFC process Support contact provided from 9:00 AM until 1:00 PM
Slide 11: Questions?
Available Flowgate Capacity (AFC) QUESTIONS? 11
Slide 12: Available Flowgate Capacity (AFC) Market Training Session on AFC
Entergy Services, Inc Available Flowgate Capacity (AFC) Market Training Session on AFC Uma Gangadharan Transmission Operational Planning Houston, TX March 9th, 2004 12
Slide 13: Current Process to Evaluate Reservations
Current Process to Evaluate Reservations AMEREN EDE AECI ATC (Available Transfer Capability) TVA SPA calculated on each of the 15 control area BATESVILLE interfaces with Entergy OG&E Entergy SMEPA focus of transfer study is on regional CSW SOUCO constraints CLECO LEPA transfer capability defin
Slide 14: Available Flowgate Capacity (AFC) method
Available Flowgate Capacity (AFC) method • Every study can be source/sink transaction specific • Accurately captures effect of interactions between transactions • Requests evaluated in order and impacts on flowgates continuously updated • Assesses the impact of each source/sink pair on each monitore
Slide 15: Graphical Representation of AFC
Graphical Representation of AFC Transfer 1: 1000 MW SRC1 to SNK1 (2.5%, 5%, 10%) Approved Transfer 2: 500 MW SRC2 to SNK2 (10%, 8%, 3%) Approved Transfer 3: 600 MW SRC3 to SNK3 (15%, 15%, 10%)Counter Offer – 100 MW ATCeffective ( Rating Baseflowprior commitments ) /( response factor ) Effective
Slide 16: AFC Process Flowchart
Transmission Business AFC PROCESS FLOWCHART Reservations Offline Planning models (Month 2 - 18) Outage Schedules (Gen/Tran) OASIS te I AFC values & Response Factors t Month 2-18 OASIS | Automation Scenario Analyzer AFC values & Response Factors— Hr 1 - Day 31 Schedules/Reservations RFEALC EMS Models
Slide 17: Horizons in AFC Calculation
Horizons in AFC Calculation • Operating (12 – 36 Hours) • Planning (End of Operating – Day 31) • Study (Month 2 – 18) 17
Slide 18: Benefits of AFC Utilization
Benefits of AFC Utilization • More accurate representation of system transfer capability • Maximizes throughput and enhances system reliability • Process lends itself to more efficient short-term market operation • Each request evaluation is like an SIS 18
Slide 19: How will AFC improve accuracy of transfer capability determinations?
How will AFC improve accuracy of transfer capability determinations? • Transfer capability determinations are based on power flows from specific generator sources rather than control areas. • Evaluation of service requests based on actual impact on specific transmission facilities. • Simultaneous im
Slide 20: How will AFC facilitate the short-term market?
How will AFC facilitate the short-term market? • System Impact Study no longer necessary to evaluate transfer capability for short-term requests. • The speed of the analysis is vastly improved over current ATC/GOL methods. • AFC does not depend upon a pre-calculated contract path non-simultaneous va
Slide 21: Differences between AFCs and GOL/ATCs
Differences between AFCs and GOL/ATCs • GOL/ATC restricted to lowest of transacted path, otherwise SIS. AFC is source/sink based, therefore more accurate and consistent with SIS process. • GOL/ATC is based upon daily/monthly models. AFC will be based upon hourly/daily/monthly models. • Models for GO
Slide 22: Differences between AFCs and GOL/ATCs
Differences between AFCs and GOL/ATCs • Predetermined GOL/ATC values posted on OASIS. AFC values on monitored flowgates will be posted on OASIS and available capability obtained through scenario analyzer. • GOL is an alternative to, not a replacement for SIS. With AFC, TSR is evaluated with most up-
Slide 23: Overview of OASIS Automation
Overview of OASIS Automation • OASIS automation provides interface for granting and reserving transmission service based on calculated AFC values • Scenario Analyzer provides an instant “study” of the request • Scenario Analyzer is a study tool – service is granted only for actual requests on OASIS
Slide 24: Implementation Timeframe
Implementation Timeframe • Compliance filing due on March 12 • Market trials will start on March 10 • AFCs go live on April 1 24
Slide 25: Questions?
Available Flowgate Capacity (AFC) QUESTIONS? 25