Modelling and Design of a Virtual Energy Storage System (VESS) for Power System Frequency Regulation

2018 ◽  
Author(s):  
C.J. Liu ◽  
S.Q. Bu
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Storage System ◽  
Energy Storage System ◽  
Frequency Regulation ◽  
System Frequency

Capacity Configuration of BESS as an Alternative to Coal-Fired Power Units for Frequency Control

2014 ◽  
Vol 953-954 ◽  
pp. 743-747 ◽  
Author(s):  
Dong Ding ◽  
Jian Lin Li ◽  
Shui Li Yang ◽  
Xiao Gang Wu ◽  
Zong Qi Liu
Keyword(s):  
Energy Storage ◽  
Frequency Control ◽  
Storage System ◽  
Energy Storage System ◽  
Fast Response ◽  
Frequency Regulation ◽  
Continuous Increase ◽  
Regulation Method ◽  
Battery Energy ◽  
System Frequency

Coal-fired power units show defects in meeting the demands of maintaining power system frequency stability. This is mainly due to their inherent characteristics and a continuous increase in renewable generation. Battery Energy Storage System (BESS) has such advantages as fast response and precise tracking, thus may be a new frequency regulation method. On basis of the principle of energy storage for regulation, capacity configuration of energy storage is made as an alternative to coal-fired power unit accounting for both primary and secondary frequency regulation. Example calculations and simulation in MATLAB/SIMULINK are conducted to verify the feasibility of the proposed capacity configuration methods and the reliability of the energy storage system for regulation.

scholarly journals A Feasibility Study of Frequency Regulation Energy Storage System Installation in a Power Plant

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5365
Author(s):  
Lateef Onaadepo Ibrahim ◽  
Youl-Moon Sung ◽  
Doosoo Hyun ◽  
Minhan Yoon
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Power System ◽  
Short Circuit ◽  
Storage System ◽  
Peak Load ◽  
Load Condition ◽  
Energy Storage System ◽  
Frequency Regulation ◽  
Relay Coordination

The aim of this work is to analyze and stabilize the power system when connecting an energy storage system (ESS) to replace the traditional power reserve of a power plant. Thus, it is necessary to validate and simulate the power facility protection system using a relay coordination approach. The input feasibility of the generator for the frequency regulation (FR) of the operational ESS is also validated through detailed analysis studies including power flow, short circuit and relay coordination analysis. The case scenarios for ESS installation are categorized based on its operation mode and location in the power system. These studies are carried out on the power system at the peak load condition specified for both grids. With the electrical transient analyzer program (ETAP), an analysis is performed to study the implementation of the ESS in a large, integrated power system to determine which location best fits the installation of ESS considering the load flow, short circuit and relay coordination results in each case scenario. Cost evaluation was performed for the choice of locations under study.

scholarly journals Utilization of Energy Storage System for Frequency Regulation in Large-Scale Transmission System

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3898 ◽  
Author(s):  
Minhan Yoon ◽  
Jaehyeong Lee ◽  
Sungyoon Song ◽  
Yeontae Yoo ◽  
Gilsoo Jang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Large Scale ◽  
Storage System ◽  
Energy Storage System ◽  
Rate Of Change ◽  
Frequency Regulation ◽  
Renewable Energy Resources ◽  
Response Characteristics ◽  
Inertia Response

As the penetration rate of renewable enery resources (RES) in the power system increases, uncertainty and variability in system operation increase. The application of energy storage systems (ESS) in the power system has been increased to compensate for the characteristics of renewable energy resources. Since ESS is a controllable and highly responsive power resource, primary frequency response and inertia response are possible in case of system contingency, so it can be utilized for frequency regulation (FR) purposes. In frequency regulation, reduction of the Rate of Change of Frequency (RoCoF) and increase the frequency nadir by improving the response characteristics are important factors to secure frequency stability. Therefore, it is important to control ESS with proper parameters according to changing system situation. In this paper, we propose a method to calculate and apply a frequency droop, which is basically required according to the power system condition based on swing equation and effective inertia assessment. In addition, a method to estimate RoCoF droop according to the correlation with frequency by estimating the systematic inertia in the current situation is proposed. The case study for verification of the proposed method was performed through dynamic simulation using actual Korean power system data. The results show that the proposed method is more effective than the governor-free of the conventional thermal generator and conventional droop control-based FR-ESS.

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