Battery Storage Formulation and Impact on Day Ahead Security Constrained Unit Commitment
Yonghong Chen, Ross Baldick
Abstract
This paper discusses battery storage formulations and analyzes the impact of the constraints on the computational performance of security constrained unit commitment (SCUC). Binary variables are in general required due to mutual exclusiveness of charging and discharging modes. We use valid inequalities to improve the SOC constraints. Adding batteries to the MISO day ahead market clearing cases reveals the impact of binary variables and the valid inequalities on SCUC solving time. Warm start and lazy constraint techniques are applied to improve the performance and make the valid inequalities more effective, reducing computation time to acceptable levels for implementation.
Topics & Concepts
Power system simulationConstraint (computer-aided design)ComputationBattery (electricity)Binary numberMathematical optimizationComputer scienceStorage managementUnit (ring theory)Reliability engineeringEngineeringPower (physics)Electric power systemMathematicsArithmeticAlgorithmOperating systemMathematics educationMechanical engineeringPhysicsQuantum mechanicsElectric Vehicles and InfrastructureAdvanced Battery Technologies ResearchSmart Grid Energy Management