6 Adjustment Period and Real-Time Operations - Electric Reliability ...

ERCOT Nodal Protocols Section 6: Adjustment Period and Real-Time Operations
June 1, 2017
6 Adjustment Period and Real-Time Operations 6-1 6.1 Introduction 6-1
6.2 Market Timeline Summary 6-1
6.3 Adjustment Period and Real-Time Operations Timeline 6-2
6.3.1 Activities for the Adjustment Period 6-5
6.3.2 Activities for Real-Time Operations 6-6
6.3.3 Real-Time Timeline Deviations 6-10
6.3.4 ERCOT Notification of Validation Rules for Real-Time 6-10
6.4 Adjustment Period 6-10
6.4.1 Capacity Trade, Energy Trade, Self-Schedule, and Ancillary Service
Trades 6-10
6.4.2 Output Schedules 6-11
6.4.2.1 Output Schedules for Resources Other than Dynamically Scheduled
Resources 6-11
6.4.2.2 Output Schedules for Dynamically Scheduled Resources 6-11
6.4.2.3 Output Schedule Criteria 6-12
6.4.2.4 Output Schedule Validation 6-13
6.4.2.5 DSR Load 6-13
6.4.3 Real-Time Market (RTM) Energy Bids and Offers 6-14
6.4.3.1 RTM Energy Bids 6-14
6.4.3.1.1 RTM Energy Bid Criteria 6-14
6.4.3.1.2 RTM Energy Bid Validation 6-15
6.4.4 Energy Offer Curve 6-15
6.4.4.1 Energy Offer Curve for On-Line Non-Spinning Reserve Capacity 6-
16
6.4.5 Incremental and Decremental Energy Offer Curves 6-16
6.4.6 Resource Status 6-16
6.4.7 QSE-Requested Decommitment of Resources and Changes to Ancillary
Service Resource Responsibility of Resources 6-17
6.4.7.1 QSE Request to Decommit Resources in the Operating Period 6-
18
6.4.7.2 QSE Request to Decommit Resources in the Adjustment Period 6-
18
6.4.8 Notification of Forced Outage of a Resource 6-19
6.4.9 Ancillary Services Capacity During the Adjustment Period and in Real-
Time 6-19
6.4.9.1 Evaluation and Maintenance of Ancillary Service Capacity
Sufficiency 6-19
6.4.9.1.1 ERCOT Increases to the Ancillary Services Plan 6-20
6.4.9.1.2 Replacement of Undeliverable Ancillary Service Due to
Transmission Constraints 6-21
6.4.9.1.3 Replacement of Ancillary Service Due to Failure to Provide 6-
23
6.4.9.2 Supplemental Ancillary Services Market 6-24
6.4.9.2.1 Resubmitting Offers for Ancillary Services in the Adjustment
Period 6-27
6.4.9.2.2 SASM Clearing Process 6-27
6.4.9.2.3 Communication of SASM Results 6-28
6.5 Real-Time Energy Operations 6-29
6.5.1 ERCOT Activities 6-29
6.5.1.1 ERCOT Control Area Authority 6-29
6.5.1.2 Centralized Dispatch 6-32
6.5.2 Operating Standards 6-33
6.5.3 Equipment Operating Ratings and Limits 6-33
6.5.4 Inadvertent Energy Account 6-33
6.5.5 QSE Activities 6-34
6.5.5.1 Changes in Resource Status 6-34
6.5.5.2 Operational Data Requirements 6-34
6.5.6 TSP and DSP Responsibilities 6-39
6.5.7 Energy Dispatch Methodology 6-39
6.5.7.1 Real-Time Sequence 6-39
6.5.7.1.1 SCADA Telemetry 6-40
6.5.7.1.2 Network Topology Builder 6-40
6.5.7.1.3 Bus Load Forecast 6-40
6.5.7.1.4 State Estimator 6-41
6.5.7.1.5 Topology Consistency Analyzer 6-41
6.5.7.1.6 Breakers/Switch Status Alarm Processor and Forced Outage
Detection Processor 6-41
6.5.7.1.7 Real-Time Weather and Dynamic Rating Processor 6-41
6.5.7.1.8 Overload Alarm Processor 6-42
6.5.7.1.9 Contingency List and Contingency Screening 6-42
6.5.7.1.10 Network Security Analysis Processor and Security Violation
Alarm 6-42
6.5.7.1.11 Transmission Network and Power Balance Constraint Management 6-
44
6.5.7.1.12 Resource Limits 6-45
6.5.7.1.13 Data Inputs and Outputs for the Real-Time Sequence and SCED 6-
46
6.5.7.2 Resource Limit Calculator 6-49
6.5.7.3 Security Constrained Economic Dispatch 6-54
6.5.7.3.1 Determination of Real-Time On-Line Reliability Deployment Price
Adder 6-59
6.5.7.4 Base Points 6-61
6.5.7.5 Ancillary Services Capacity Monitor 6-62
6.5.7.6 Load Frequency Control 6-70
6.5.7.6.1 LFC Process Description 6-70
6.5.7.6.2 LFC Deployment 6-71
6.5.7.7 Voltage Support Service 6-77
6.5.7.8 Dispatch Procedures 6-78
6.5.7.9 Compliance with Dispatch Instructions 6-79
6.5.7.10 IRR Ramp Rate Limitations 6-80
6.5.8 Verbal Dispatch Instruction Confirmation 6-81
6.5.9 Emergency Operations 6-82
6.5.9.1 Emergency and Short Supply Operation 6-82
6.5.9.2 Failure of the SCED Process 6-83
6.5.9.3 Communication under Emergency Conditions 6-84
6.5.9.3.1 Operating Condition Notice 6-84
6.5.9.3.2 Advisory 6-85
6.5.9.3.3 Watch 6-87
6.5.9.3.4 Emergency Notice 6-89
6.5.9.4 Energy Emergency Alert 6-90
6.5.9.4.1 General Procedures Prior to EEA Operations 6-91
6.5.9.4.2 EEA Levels 6-92
6.5.9.4.3 Restoration of Market Operations 6-96
6.5.9.5 Block Load Transfers between ERCOT and Non-ERCOT Control Areas
6-96
6.5.9.5.1 Registration and Posting of BLT Points 6-98
6.5.9.5.2 Scheduling and Operation of BLTs 6-99
6.5.9.6 Black Start 6-99
6.6 Settlement Calculations for the Real-Time Energy Operations 6-100
6.6.1 Real-Time Settlement Point Prices 6-100
6.6.1.1 Real-Time Settlement Point Price for a Resource Node 6-100
6.6.1.2 Real-Time Settlement Point Price for a Load Zone 6-102
6.6.1.3 Real-Time Settlement Point Price for a Hub 6-104
6.6.1.4 Load Zone LMPs 6-104
6.6.1.5 Hub LMPs 6-105
6.6.2 Load Ratio Share 6-106
6.6.2.1 ERCOT Total Adjusted Metered Load for a 15-Minute Settlement
Interval 6-106
6.6.2.2 QSE Load Ratio Share for a 15-Minute Settlement Interval 6-
107
6.6.2.3 ERCOT Total Adjusted Metered Load for an Operating Hour 6-107
6.6.2.4 QSE Load Ratio Share for an Operating Hour 6-108
6.6.3 Real-Time Energy Charges and Payments 6-108
6.6.3.1 Real-Time Energy Imbalance Payment or Charge at a Resource Node
6-108
6.6.3.2 Real-Time Energy Imbalance Payment or Charge at a Load Zone 6-
115
6.6.3.3 Real-Time Energy Imbalance Payment or Charge at a Hub 6-118
6.6.3.4 Real-Time Energy Payment for DC Tie Import 6-119
6.6.3.5 Real-Time Payment for a Block Load Transfer Point 6-121
6.6.3.6 Real-Time Energy Charge for DC Tie Export Represented by the
QSE Under the Oklaunion Exemption 6-123
6.6.3.7 Real-Time High Dispatch Limit Override Energy Payment 6-128
6.6.3.8 Real-Time High Dispatch Limit Override Energy Charge 6-131
6.6.4 Real-Time Congestion Payment or Charge for Self-Schedules 6-132
6.6.5 Base Point Deviation Charge 6-133
6.6.5.1 Resource Base Point Deviation Charge 6-133
6.6.5.1.1 General Generation Resource and Controllable Load Resource Base
Point Deviation Charge 6-135
6.6.5.1.1.1 Base Point Deviation Charge for Over Generation 6-135
6.6.5.1.1.2 Base Point Deviation Charge for Under Generation 6-136
6.6.5.1.1.3 Controllable Load Resource Base Point Deviation Charge for Over
Consumption 6-138
6.6.5.1.1.4 Controllable Load Resource Base Point Deviation Charge for
Under Consumption 6-139
6.6.5.2 IRR Generation Resource Base Point Deviation Charge 6-140
6.6.5.3 Resources Exempt from Deviation Charges 6-142
6.6.5.4 Base Point Deviation Payment 6-143
6.6.6 Reliability Must-Run Settlement 6-143
6.6.6.1 RMR Standby Payment 6-143
6.6.6.2 RMR Payment for Energy 6-147
6.6.6.3 RMR Adjustment Charge 6-151
6.6.6.4 RMR Charge for Unexcused Misconduct 6-152
6.6.6.5 RMR Service Charge 6-153
6.6.6.6 Method for Collecting and Distributing RMR Contributed Capital
Expenditures 6-154
6.6.7 Voltage Support Settlement 6-155
6.6.7.1 Voltage Support Service Payments 6-155
6.6.7.2 Voltage Support Charge 6-159
6.6.8 Black Start Capacity 6-160
6.6.8.1 Black Start Hourly Standby Fee Payment 6-160
6.6.8.2 Black Start Capacity Charge 6-161
6.6.9 Emergency Operations Settlement 6-162
6.6.9.1 Payment for Emergency Power Increase Directed by ERCOT 6-164
6.6.9.2 Charge for Emergency Power Increases 6-167
6.6.10 Real-Time Revenue Neutrality Allocation 6-168
6.6.11 Emergency Response Service Capacity 6-173
6.6.11.1 Emergency Response Service Capacity Payments 6-173
6.6.11.2 Emergency Response Service Capacity Charge 6-178
6.7 Real-Time Settlement Calculations for the Ancillary Services 6-179
6.7.1 Payments for Ancillary Service Capacity Sold in a Supplemental
Ancillary Services Market (SASM) or Reconfiguration Supplemental Ancillary
Services Market (RSASM) 6-179
6.7.2 Payments for Ancillary Service Capacity Assigned in Real-Time
Operations 6-181
6.7.2.1 Charges for Infeasible Ancillary Service Capacity Due to
Transmission Constraints 6-183
6.7.3 Charges for Ancillary Service Capacity Replaced Due to Failure to
Provide 6-185
6.7.4 Adjustments to Cost Allocations for Ancillary Services Procurement 6-
188
6.7.5 Real-Time Ancillary Service Imbalance Payment or Charge 6-211
6.7.6 Real-Time Ancillary Service Imbalance Revenue Neutrality Allocation 6-
220
6.7.7 Adjustments to Net Cost Allocations for Real-Time Ancillary Services
6-222 Adjustment Period and Real-Time Operations
6.1 Introduction (1) This Section addresses the following components: the Adjustment
Period and Real-Time Operations, including Emergency Operations. (2) The Adjustment Period provides each Qualified Scheduling Entity (QSE)
the opportunity to adjust its trades, Self-Schedules, and Resource
commitments as more accurate information becomes available under Section
6.4, Adjustment Period. During the Adjustment Period, ERCOT continues to
evaluate system sufficiency and security by use of Hour-Ahead Reliability
Unit Commitment (RUC) processes, as described in Section 5, Transmission
Security Analysis and Reliability Unit Commitment. Under certain
conditions during the Adjustment Period, ERCOT may also open one or more
Supplemental Ancillary Service Markets (SASMs), as described in S