preparing for the unexpected: transmission planning in...
TRANSCRIPT
2014Transform TX
January 29, 2014
Hala N. Ballouz, PEElectric Power Engineers, Inc.
Preparing for the unexpected: Transmission Planning in ERCOT
In business since 1968
Consulting to electric utilities and private generators
• Transmission grid deliverability analysis• Management of grid interconnection• Congestion and curtailment analysis• Market pricing and nodal analysis• Design & Equipment grid compliance• Owner’s Engineer, testing, inspection
3
1990’sERCOT Generation Interconnection
Customer:
Hey, I have a 50 MW generator at Friend Ranch
ISO
We should be fine, plenty of capacity there.
….will run a study anyways!
4
2014ERCOT Interconnection Process
Source: ERCOT Guide To The Interconnection Process Version 1.0
Outage Scheduling
Coordinated & Commissioning Plan submitted
Meteorologicaltower
requirements are met
Compliance with
Operating Stds. checked
SCADAConfirmed
Request to
commissionPOI
approved
Registration of RE
(IE Transitions to an RE)
Proposed Energization Date (PED) identified
Model Ready Date (MRD) identified
RE submits
RARF
EPS meter design
proposal from TSP
GINRRequest
(FEE)
Screening Study (SSR if required)
90 Day Limit45 day target
Resource Decision to
Proceed180 day limit
FISRequest
(Fee)
FISScope
Meeting
Request For initial
synch.approved
QSE Ptslist received
from QSE based on Scada Plan
TelemetryAdditions
set up for MRD
TestReactive
Capability
Request To begin
CommercialOperationsapproved
EPSmeterdesign
proposal date
ESIID active
In Loadstar
Full InterconnectStudies
SS; FaultDynamic; Fac.<Economic>;
<SSR>
TSPERCOT
Review FIS& ERCOT Approval
NegotiationOf
Interconnection Agreement
180 day limit
ERCOT Assess
standards 60 day limit
First time to be
energized
Initial Synchronization
Commercial Operation
Date(COD)
Screening Study
delivered to IE
IE commits
to proceed
FIS Scope agreed
upon (IE and TSP)
FIS complete
IA signed by TSP and
IE
ERCOT Standards
Review delivered
to IE
5
1990sTechnical Grid Requirements
Are the conductors large enough?
6
2014Technical Grid Compliance Requirements
1. Thermal Limitations (Are the Conductors Large Enough!)
2. Voltage Ride-Through (VRT) Requirements for IRRs (Nodal Operating Guides Section 2.9)
3. Frequency Relaying Requirements (Nodal Operating Guides section 2.6.2)
4. Reactive Power Support Requirements (Nodal Protocols section 3.15)
5. Ramp-up Rate Requirements (Nodal Protocols section 6.5.7.10)
6. Primary Frequency Response (PFR) Requirements (Nodal Protocols section 8.5.1.1)
7. Sub-Synchronous Interaction (SSI) – Section 5 of ERCOT Planning Guides
7
GINR ProjectName County
IA Capacity (MW)
FC Capacity (MW)
IA Signed Date
Projected COD
11INR0050 Moore Wind 1 Crosby 149 0 7/12/2012 8/8/201413INR0005 Conway Windfarm Carson 600 600 10/24/2012 12/1/201414INR0023 Longhorn Energy Center Briscoe 361 361 12/10/2012 12/1/201414INR0030a2 Panhandle Wind Carson 218 218 12/19/2012 8/1/201413INR0010a Mariah Wind Parmer 200 0 1/31/2013 10/30/201413INR0010b Mariah Wind Parmer 200 0 1/31/2013 12/31/201513INR0010c Mariah Wind Parmer 200 0 1/31/2013 12/31/201613INR0048 Spinning Spur Wind Two Oldham 161 161 2/27/2013 6/1/201414INR0012a Miami Wind 1 Project Gray 289 289 3/1/2013 7/31/201414INR0012b Miami Wind 1 Project Gray 112 0 3/1/2013 8/15/201513INR0059a Hereford Wind Castro 200 200 6/10/2013 9/4/201413INR0059b Hereford Wind Castro 300 300 6/10/2013 4/15/201512INR0029 Comanche Run Wind Swisher 500 0 7/24/2013 12/31/201614INR0030b Panhandle Wind (Ph2) Carson 182 182 10/2/2013 9/1/201414INR0032a Route66 Wind Randall 150 0 10/31/2013 12/1/201412INR0018 Pampa Wind Project Gray 500 0 11/12/2013 3/31/201714INR0053 Spinning Spur Wind Three Oldham 194 194 12/10/2013 12/31/2014
4,516 2,505
Panhandle Wind Signed IA ProjectsIA: Interconnection AgreementFC: Financial CommitmentCOD: Commercial Operating Day
8
Roadmap- Panhandle Export LimitTransmission Upgrades needed
9
Large Generator Interconnection Process Issues?
TimeCost
Transmission Reliability Limitations
10
Resource Mapping
Collaboration
In Resource Development
Map the Resources
Provide Ancillary Services
OPTIMIZE
11
Resource Side PlanningLessons Learned
Understanding of the intricate interconnection process and requirements is key to project success
Being informed about the transmission grid present and future limitations for choosing LOCATION for a resource
Collaboration amongst all Resource Sectors in sketching a map for successful co location of resources
E N E R G Y STO R A G E
HOUR OF DAY
Actual Load Cycle
STORAGE CHARGE
STORAGE DISCHARGE
Levelized Load Cycle
