Battery Energy Storage System for Emergency Supply and Improved Reliability of Power Networks

Abstract

This paper introduces the concept of a battery energy storage system as an emergency power supply for a separated power network, with the possibility of island operation for a power substation with one-side supply. This system, with an appropriately sized energy storage capacity, allows improvement in the continuity of the power supply and increases the reliability of the separated network at a specified time during the limitation of power transmission as a result of damage or disconnection of the main power line. This paper presents and describes a specific method of energy storage system dimensioning based on real measurement data. Based on the obtained parameters, an analysis of the reliability improvement of the considered network was performed. The implementation of the battery energy storage system will contribute to a more than 5-fold reduction in the occurrence of power outages in the time interval from 3 min to 1.5 h, which will clearly reduce the System Average Interruption Frequency Index and System Average Interruption Duration Index factors. In this paper, the network conditions for operational normality and failure are presented and the cost for implementation of an energy storage system (about EUR 1 million) is compared with the possible implementation of an additional power line (about EUR 5 million) to a specific power substation.

Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

“…In order to present and to test this concept, the real measurement data (load power flow, TS supply side power flow, charge and discharge power profile of BESS) obtained in a selected substation in which previously the DROPT system was implemented have been used. Whereas the optimally selected BESS, that is, power and energy have been determined previously for implementing DROPT system in a selected TS, using the one-threshold power limitation method [17] and the 15 min averaging method presented in [25].…”

“…The typical (measured) weekly power profiles of instantaneous P AC_avg(1-s) (1 s averaged) and the 15 min average P AC_avg(15-min) powers on the AC side of above mentioned traction substation are shown in Figure 2. The real measurements have been recorded using power quality recorders and the analysis of the measurement data (P AC_avg(1-s) ) was performed in the RStudio using a 15 min average method [25] in accordance with the EN standards [30,31]. The daily power profiles of P AC_avg(1-s) and P AC_avg(15-min) in normal state have been shown in Figures 3 and 4 (with DROPT-FTC system inactive and with DROPT-FTC system activated respectively).…”

Optimal Energy Storage Configuration of Prosumers with Uncertain Photovoltaic in the Presence of Customized Pricing-Based Demand Response

“…Emergency power supply refers to the temporary measures taken to ensure power demand for specific areas or users in the event of emergencies or system failures [28]. This mode of power supply is typically employed during power system failures, natural disasters, or other unforeseen circumstances.…”

Design of Hybrid (PV-Diesel) System for Tourist Island in Karimunjawa Indonesia

“…Power storage in hybrid systems generally uses a Battery Cell Unit (BCU) [29] equipped with an energy management system with an intelligent approach to cope with peak loads [30]. In this case, the battery capacity B cap in (Ah) is calculated using Equation (4) as in [29], where I is the current capacity (A), and t is the operating time (hours). B cap can also be calculated based on the operational energy requirements of the installed load.…”