Operation of energy storage system for renewable utilization enhancement

摘要

This paper presents the optimal operation of energy storage system (ESS) applied for renewable utilization enhancement. The problem is formulated with stochastic dynamic programming (SDP) framework, which explicitly incorporates the system uncertainties. The transmission network modeling is particularly considered from the viewpoint of Independent System Operator (ISO). The SDP-based operation policy for ESS, renewable and conventional generation dispatch can accurately adapt to hourly uncertainties in wind and load demand. It is demonstrated to considerably increase wind utilization and reduce energy production cost. Additionally, comparison result shows that the proposed SDP model outperforms look-ahead optimization model as a commonly used approach for operation problems under uncertainty.