Incorporating energy storage and variable renewables in power flow analysis
Challenge and objective
The hypothesis is that the optimal operation of a distribution system with energy storage can be investigated/determined using multi-period optimal power flow (MPOPF) techniques.
The objective is to value stored energy for future use, taking into account wind and PV uncertainties.
Work performed
Develop a method for storage valuation inspired by optimization principles from hydropower scheduling.
Including the energy storage model in MPOPF, together with stochastic wind and PV.
Performing analysis on a Norwegian test case.
Significant results
The storage model proved to be an effective and robust method for treating wind and PV uncertainties.
Should be further developed to handle load uncertainties and use of energy storage for reliability purposes.
Impact for distribution system innovation
The methods and models presented here can be part of the basis for the next generation of power flow tools used in practice.
