Control of Battery Energy Storage System for Peak Shaving using Enhanced Time of Use Scheme

Energy storage system (ESS) has gained a great deal of attention because of its very substantial benefits to the electricity producers/providers and consumers such as power factor control (PFC), peak shaving /shifting and integrating of renewable energy (RE) to the utility grid. Peak shaving reduces the consumption of power from the grid at peak times. In addition, ESS location and technology maintain a high power factor due to the reduction in the reactive power drawn from the utility grid. The aim of this study is to propose a new ESS controller based on the pricing of Enhanced Time of Use scheme (EToU). The proposed control system consists of a combined state of charge (SOC) set points and electricity price algorithm that sends a signal to enable charge and discharge. A sample model along with real commercial and industrial data collected from Kuala Lumpur City Centre (KLCC) and Malaysia Marine and Heavy Engineering (MHEE) are used to test and evaluate the proposed controller. The results of ESS simulation showed that the system performs peak shaving effectively when electricity cost has been reduced significantly.