Multi-Area Security Constrained Economic Dispatch

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1 Mult-rea ecurty Constraned Economc Dspatch Raquel Lm upervsor Operatons Reonal Maret Coordnaton New Yor Independent ystem Operator Muhammad Marwal Manaer Enery Marets Products New Yor Independent ystem Operator FERC Techncal Conference June Washnton D.C New Yor Independent ystem Operator Inc. ll Rhts Reserved.

2 Overvew Key Concepts Real Tme Coordnaton ecurty Constraned Economc Dspatch Formulaton 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 2

3 Key Concepts Mult-rea Jont Dspatch cheve least cost soluton by economcally re-dspatchn resources wthn multple areas to Control parallel flows Manae constrants 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 3

4 Key Concepts Reduces Coneston Expands pool of resources that are capable of addressn a reon s transmsson constrants Provdes better prce converence at the borders as a collectve set of resources are used to solve system constrants Reduces Overall Cost of Coneston Provdes an RTO wth the ablty to request eneraton re-dspatch from nehborn maret(s) olves nternal constrants at a lower cost 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 4

5 Real Tme Coordnaton Networ Model Each area must have suffcent networ detal of nehborn area to determne accurate power flows utomatc Data Exchane Relef Request MW Constrant hadow Cost ($) Optmzaton rea 1 and rea 2 re-dspatch systems to jontly solve for a system constrant untl t s no loner actve 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 5

6 Real Tme Coordnaton Example 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 6

7 rea 2 ystem Prce = $40 Generator 2 Output = 300MW Max = 400MW $45 Offer -0.2 Dfax rea 1 hadow Prce = -$40 rea 1 ystem Prce = $40 Generator 1 Output = 50MW Max = 50MW $50 Offer Dfax rea 1 requests 10 MW of relef at the current shadow prce of -$ New Yor Independent ystem Operator Inc. ll Rhts Reserved. 7

8 rea 2 ystem Prce = $40 Generator 2 Output = 250MW Max = 400MW $45 Offer -0.2 Dfax rea 2 hadow Prce = -$25 Lne 90MW rea 1 hadow Prce = -$40 rea 1 ystem Prce = $40 Generator 1 Output = 50MW Max = 50MW $50 Offer Dfax Generator 2 s reduced by 50 MW (to 250 MW) to provde 10 MW of relef. rea 2 constrant shadow prce s -$ New Yor Independent ystem Operator Inc. ll Rhts Reserved. 8

9 ecurty Constraned Economc Dspatch 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 9

10 ecurty Constrant Economc Dspatch Generator/Load/Reserve Requrements Intal enerator status Intal Economc Dspatch Dspatch chedule Intal Economc Dspatch Produces Generator and Load schedules based on Generator/Load/Reserve Requrements Networ Data Preparaton Develops hourly un-solved power flows based on the commtment and eneraton schedule from the Intal Economc Dspatch and networ data Networ Data Preparaton Networ ecurty nalyss Generates networ constrants f lne (or nterface) lmts are not satsfed for the nput schedule Networ ecurty nalyss Networ Flow Base Cases Networ Constraned Economc Dspatch Redspatch Generaton and Load to solve for Generator/Load/Reserve Requrements networ constrants Revsed Dspatch chedule Networ Constraned Economc Dspatch Networ Constrants Data for Jont Dspatch Relef Request MW = MW Flow Frst N - MW Flow Last N Constrant hadow Cost ($) 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 10

11 Mult-rea CED rea 1 rea 2 Intal Economc Dspatch Intal Economc Dspatch Dspatch chedule Dspatch chedule Networ Data Preparaton Networ Data Preparaton Networ Flow Base Cases Networ Flow Base Cases Networ ecurty nalyss Networ ecurty nalyss Networ Constrants Relef Request MW Constrant hadow Cost ($) Networ Constrants Networ Constraned Economc Dspatch Networ Constraned Economc Dspatch 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 11

12 Mult-rea CED - Optmzaton Transmsson Demand Curve (TDC) s used by rea 2 to solve for rea 1 nternal constrant Model Relef Request MW amount and Constrant hadow Cost for mnmzaton of dspatch costs to solve for external constrant Prevents rea 2 from dspatchn system at a hher cost than rea New Yor Independent ystem Operator Inc. ll Rhts Reserved. 12

13 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 1 2 ) ( } { p C Mn j j D 1 1 max ' pre pre f f 1 1 ' Re l p ; 1 ; 2.T. 2 1 ) ( } { p C Mn j j D 2 2 max ' pre pre f f 1 1 ' Re l p ; 2 ; 1.T. 0 p 2 ; 0 p 1 ; Rel 2 1 Mult-rea CED - Formulaton

14 Mult-rea CED dvantaes: Economcally re-dspatch resources wthn multple areas to acheve least cost soluton Provde consstent prcn profle across multple areas ddtonal Mult-rea CED Opportuntes: PR coordnaton between two areas to releve system constrants Potental Research rea: Decentralzed economc dspatch for dstrbuted eneraton 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 14

15 2013 New Yor Independent ystem Operator Inc. ll Rhts Reserved. 15

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