Evaluating the Risk of Enabling Energy Storage Systems to Provide Multiple Services.

Battery energy storage systems (BESS) are emerging as a promising, versatile technology for modern power grids due to their inherent distributed nature, their ability to provide bidirectional injections and multiple grid services. With the proliferation of intermittent renewable energy resources, the BESS procurement is also expected to increase, thereby creating systematic and strategic opportunities for BESS to leverage revenue streams by providing multiple services. However, many of these services involve uncertainties which when not considered may lead to failures in service-provision. This work presents a risk-aware control strategy that takes into account the un-certainties around some of the stochastic services and ensures the BESS to deliver their service commitments. Utilizing a co-simulation architecture, this work also presents an evaluation framework to determine the true potential of utility-scale BESS for simultaneous provision of multiple services. The proposed framework is implemented for BESS installed in a real-world feeder and their performance trade-offs on multi-service pro-vision are quantified. This promotes overall grid reliability and encourages BESS implementation through revenue stacking from providing multiple grid services.