April 2015 Update to COPS Registered DG Threshold Background Unregistered Distributed Generation DG are electrical generating facilities located at a Customers point of delivery connected at a distribution voltage and equal to or less than the ID: 503029
Download Presentation The PPT/PDF document "COMMUNICATIONS AND SETTLEMENTS WORKING G..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
COMMUNICATIONS AND SETTLEMENTS WORKING GROUP (CSWG)
April 2015 Update to COPSSlide2
Registered DG Threshold Background
Unregistered Distributed Generation (DG) are electrical generating facilities located at a Customer’s point of delivery, connected at a distribution voltage, and equal to or less than the
DG
registration
threshold (Currently set at 1 MW).
TAC Leadership requested that COPS develop
an
Change Communication Plan,
in case the DG registration threshold is ever reduced below the current 1
MW
Items to be considered before reducing the DG Registration
Threshold are
(1) Settlements (Wholesale generation settlements vs. load aggregation process for settlements, AMS vs. TDSP monthly reported metering, LMP vs. Load Zone pricing) and (2) Operations (what
registered DG
is and is not included in the Network Operations Model
)
In order to communicate a new DG registration requirement to ERCOT Stakeholders and specifically DG Owners, ERCOT, TAC Subcommittees and TDSPs (and possibly REPs) will need to be part of the communication
plan
How to document the
DG Registration Threshold Change
Communication Plan and where to keep the documentation for
future reference and
useSlide3
Registered DG Threshold
Two Discussion Items
Development of a Change Communication Plan
and where
to keep
it for future reference
(COPSMG: Section 5, Market Notice Communication Process, or Appendix)
Whether to change the
10 MW in any Load Zone threshold
trigger
; For example to 20 MW in any Load Zone (Requires a NPRR)
(Protocol Section 16.5 requires ERCOT to reduce the DG Registration Threshold once any Load Zone reaches an aggregated 10 MW, to an amount such that no Load Zone exceeds an aggregated 7 MW; Currently estimated to be at about 300 kW and impacting 10 to 12 DG facilities)Slide4
CSWG DG Registration Threshold Discussion Highlights
No current reliability or settlement issues
Settlement (Unregistered)
Competitive area:
Outflows are treated as negative load for the Rep
In NOIE:
Outflows reduce load at the NOIE boundary metering points
Operations
ERCOT evaluates
whether to include
registered DG in
the Network Operations
Model on a case-by-case basis
Non-modeled generation is not
currently
a problem in terms of resource adequacy planningSlide5
CSWG DG Registration Threshold Discussion Highlights
How to determine a new threshold
trigger
2014_QTR4 report shows 87 sites with an aggregated capacity of ~16MW
LZ_North is over 7MW; Once any Load Zone reaches 10 MW a 9-month notice to the market of a registration threshold reduction is triggered
Raise the DG registration threshold trigger from 10MW to 20MW per load zone
The
10 MW trigger
will cause the registration
of 10-12 sites >300kW
Find an operations network modeled-based criteria for establishing a DG registration threshold; How many MWs from a single DG is enough to be included in the model?
This discussion will continue at CSWGSlide6
Draft DG Registration Threshold Change Communication Plan
Trigger: When Reported Unregistered DG, > 50 kW and <= 1 MW, in
any one Load Zone reaches an aggregated 10 MW
ERCOT Staff - Post the new (reduced) DG Registration Requirement on the Market Information System (MIS)
ERCOT Staff - Meet with the appropriate TAC Subcommittees to announce the new (reduced) DG Registration Threshold
ERCOT
Staff - Issue
a Market Notice
announcing the new (reduced)
DG Registration Threshold
with an implementation date of 9
months after
date of the Market Notice
Appropriate TDSP/NOIE - Notify individual DG Owners and their REPs that are immediately impacted by the new DG Registration Threshold
Notice/Notification content details to be determined at the CSWGSlide7
Scope Change to 2015 Market System Enhancements
2015 Market System Enhancements
Timing
Phase 1
NPRR626
– Reliability Deployment Price Adder
NPRR665
– As-Built Clarification of Reliability Deployment Price Adder
NPRR568 Phase 2
– Real-Time Reserve Price Adder Based on ORDC
NPRR644
– Operating Reserve Demand Curve Phase 2 Revisions
NPRR645
– Real-Time On-Line Capacity Revisions
NPRR598 – Clarify Inputs to PRC and ORDCOBD – Methodology for Setting Max Shadow PricesPhase 2NPRR595 – RRS Load Resource Treatment In ORDCNPRR568 Phase 2 – Real-Time Reserve Price Adder Based on ORDCNPRR644 – Operating Reserve Demand Curve Phase 2 RevisionsPh1 – 6/27-6/28Ph2 – 9/21-9/25
At the 3/4/2014 WMS meeting, ERCOT recommended the removal of NPRR568 Phase 2 from the June delivery WMS concurred with ERCOT’s recommendation and asked that MPs consider whether they would support:The deferral of NPRR568 Phase 2 to the 2nd phase of the in-flight project; or,The removal of NPRR568 Phase 2 altogether (NPRR required to strike the gray box)Follow-up discussion planned at April WMS meeting
Slide found in March PRS BusInt UpdateSlide8
Changes to the document formerly known as the
“Nodal Settlement Operating Guide”
Nodal Settlement Handbook
Why?
Maintained by CSWG, not ERCOT (though ERCOT is encouraged to review)
Non-binding, collaborative work-in-progress
Flexibility to incorporate Protocol grey-boxes and work ahead, or wait for efficient time to add
Broaden scope to include shadow techniques for charge types not in the ERCOT matrix, e.g. ERS
Further broaden to include Settlement-related workflows, not on Settlement statements, e.g. ERO Fee