Power flow control of battery energy storage system using droop voltage regulation technique integrated with hybrid PV/Wind generation system

Modern Microgrid (MG) mainly consists of distributed generators (DGs), energy storage systems (ESSs), different loads, and protection systems. Microgrid plays an important role not only to ensure the power supply reliability but also to improve the power quality in distribution network. Moreover, deployment of distributed generators such as Photovoltaic Generation System (PVS), wind turbine generation system, and energy storage systems diversifies operation and control modes of AC microgrid in order to meet local demand response. This paper studies on power-flow dispatching cases for a MG with PVS and Battery Energy Storage System (BESS), which considers the maximum power consumption generated by the PVS and minimizes the power received from the utility grid. Simulation results validate the effectiveness of BESS for actively dispatching power-flow of MG in case the PVSs cannot partially or fully meet the local demand response in peak hours. By using ETAP software, real data of the PVSs are used to do simulation and power-flow calculation for the MG, which is to evaluate the feasibility of power-flow dispatch solutions proposed in this paper.

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Design and simulation of a microgrid for TIH campus

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v19.i2.pp729-736 ◽

2020 ◽

Vol 19 (2) ◽

pp. 729

Author(s):

Zaid H. Ali ◽

Ziyaad H. Saleh ◽

Raid W. Daoud ◽

Ahmed H. Ahmed

Keyword(s):

Energy Storage ◽

Storage System ◽

Energy Storage System ◽

Generation System ◽

Battery Energy Storage System ◽

Battery Energy Storage ◽

High Penetration ◽

Technical Institution ◽

Battery Energy ◽

Pv Generation

<p><span>This paper proposes a methodology for designing and operating a microgrid (MG) for the main campus of the Technical Institution Hawija. In this MG, a battery energy storage system (BESS), photovoltaic (PV) generation system, and controllable loads are included. Due to the high penetration of the PVs, over-voltage issues may occur in this MG. A novel operation strategy is considered by coordinating the BESS, PVs, and loads to prevent power outages and accomplish a secure operation of this MG. In this proposed approach, droop controllers have been implemented to provide the appropriate references for the PVs and BESS to maintain the voltage of the MG within a secure range. The generation of the PVs may be curtailed to guarantee the fidelity of the voltage. The intended simulations will be based on MATLAB/Simulink to show the efficacy of the intended design.</span></p><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML&delayStartupUntil=configured"></script><script id="texAllTheThingsPageScript" type="text/javascript" src="chrome-extension://cbimabofgmfdkicghcadidpemeenbffn/js/pageScript.js"></script>

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Modified State-of-Charge Balancing Control of Modular Multilevel Converter with Integrated Battery Energy Storage System

Energies ◽

10.3390/en12010096 ◽

2018 ◽

Vol 12 (1) ◽

pp. 96 ◽

Cited By ~ 2

Author(s):

Yajun Ma ◽

Hua Lin ◽

Zhe Wang ◽

Zuyao Ze

Keyword(s):

Energy Storage ◽

Storage System ◽

Energy Storage System ◽

Voltage Regulation ◽

State Of Charge ◽

Multilevel Converter ◽

Battery Energy Storage System ◽

Battery Power ◽

Battery Energy ◽

Balancing Control

Modular multilevel converter with integrated battery energy storage system (MMC-BESS) has been proposed for energy storage requirements in high-voltage applications. The state-of-charge (SOC) equilibrium of batteries is essential for BESS to guarantee the capacity utilization. However, submodule voltage regulation can lead to over-modulation of individual submodules, which will limit the efficiency of SOC balancing control. Focusing on this problem, a modified SOC balancing control method with high efficiency is proposed in this paper. The tolerance for battery power unbalance is defined to quantize the convergence of SOC balancing control. Both the DC component and AC component are considered while regulating submodule voltage. The linear programming method is introduced to realize the maximum tolerance for battery power unbalance in different operation modes. Based on the analysis, by choosing appropriate submodule voltage regulation method, the efficiency of SOC balancing control is improved greatly. In addition, the SOC controller is also optimally designed to avoid over-modulation of submodules. Finally, the detailed simulation and experiment results verify the effectiveness of the analysis and proposed control strategy.

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