Dynamic Line Rating in Real Time Markets

Security Constraint Unit Commitment and
Economic Dispatch Overview
Generator/load data
Load/reserve
requirements
Initial generator status
Initial
Unit
Commitment
Commitment
Schedule
Initial Unit Commitment (IUC)
Solves for generation, reserve and load
schedules that meet the generation and reserve
requirements and the generator constraints.
This module produces a base generator/load
schedule which is used to obtain the initial solved
power flows for the network analysis programs.
Revised Unit
Commitment
and Generation
/Load Schedule
Network
Data
Preparation
Network
Security
Analysis
Network
Constrained
Unit
Commitment
Network Flow
Base Cases
Network
Constraints
Network Data Preparation (NDP)
Develops hourly, un-solved power flows based
on the commitment and generation schedule
from IUC and the network data
Network Security Analysis (NSA)
Solves hourly security analysis cases. If lines
(or interfaces) limits are not satisfied for the input
schedule then NSA generates additional constraints
for use by the NCUC function so that NCUC, in the
next iteration, produces a schedule that is closer
to satisfying the constraints.
Network Constrained Unit Commitment (NCUC)
Solves for generation, reserve and load schedules
that meet the generation and reserve requirements,
the generator constraints, the branch-flow
constraints (produced by NSA)
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