LAUSR

Abstract Electrical Energy Storage (EES) plays an increasingly important role to balance the intermittent power generation and demand, thus ensuring a more reliable network. An example of such an EES is the Storage Power Plant (SPP). It has been proved in previous studies that the SPP not only improves the power supply security but also reduces redispatch costs. However, its protection features against overcurrent and exceeding of its generation limit or storage capacity have not been discussed yet. In reality, such events can occur, leading to unexpected grid failures as a worst case scenario. Thus, the aim of this paper is to exhibit the behavior of a controller model which has been implemented in the SPP to protect the power plant during such situations. In this investigation, once the SPP’s active power output is about to surpass its limit, the power plant automatically switches to a different mode of operation at the threshold value to prevent this from happening. In this manner, the SPP can protect itself autonomously and also helps to create a more robust system.