*Article* **Practical Application Study for Precision Improvement Plan for Energy Storage Devices Based on Iterative Methods**

### **Jaewan Suh 1, Minhan Yoon 2,\* and Seungmin Jung 3,\***


Received: 29 December 2019; Accepted: 1 February 2020; Published: 4 February 2020

**Abstract:** In the aspect of power grid, attention is being given to conditions of environmental variation along with the need for precise prediction strategies based on control elements in recently designed large-scale distributed generation systems. With respect to distributed generators, an operational prediction system is used to respond to the negative impacts that could be generated. As an active response plan, e fforts are being made by system operators to cover fluctuations with utilization of battery-based storage devices. Solar or ocean energy that shares electrical structure with an energy storage system has recently being seen as a combined solution. Although this structure is supported by a state analysis plan, such methods must be performed within the range where the response is possible under consideration of the power requirements of the electronic devices. This paper focuses on an iterative based solution for enhancing response of storage that included in DC generation system, to check its availability in terms of possible calculation load. A previous storage managemen<sup>t</sup> plan was utilized and tested using a commercially available transient electromagnetic simulation tool that focused on possible delays. Case studies were performed sequentially on the time delays based on utilizable inverter topologies.

**Keywords:** PV diagnosis; ESS application; DC power flow; calculation load; iterative methods
