PowrSym History

¨Placed in public domain

¨Foundation for PowrSym Plus (also called P+)
Hourly, chronological, probabilistic
Focus on pumped hydro optimization and thermal unit constraints

nPowrSym2 developed by OSA 1985-1995

Variable head pumped hydro
Multi-area with contract path grid model
Faster computation methods
Detailed spinning and operating reserve models
LOLP and LOLE computations
Foundation for PROSYM

¨

¨Addition of NTC multi-area flow logic

¨Unique features for modeling wind power, cogeneration and energy storage
Fuel contract logic, natural gas pipeline grid & storage model
Power contract logic
Spot market transaction logic
Daily Operations logic and interface
Maintenance planning under uncertainty
Advanced Monte Carlo uncertainty algorithm
Optimization includes external emission costs

¨PTDF multi-area flow logic (Zonal or Nodal by Bus)

¨Interface to transmission models

¨Enhancements for multi-area adequacy studies using Monte Carlo uncertainty algorithm.
Scale up to represent very large multi-national grid systems.
Simultaneous optimization of multiple hydro and pumped hydro systems in a very large grid.
Ability to evaluate cost/benefits of transmission changes.