A distributed rule‐based power management strategy in a photovoltaic/hybrid energy storage based on an active compensation filtering technique

Microgrids are a new concept resulting from decentralized power sources, which have changed energy utility grid topography. As this promising field is penetrated, control must be streamlined immediately. This paper analyses key control mechanisms in energy utility networks, including centralized, decentralized, and distributed setups. The focus is on the auxiliary category as the various benefits and drawbacks of each approach is investigated. Information interchange architectures that enable multiple control techniques in the auxiliary control domain are examined using distributed energy networks. The research emphasizes the necessity of auxiliary control in ensuring reliable and effective utility infrastructure operation but notes the lack of a comprehensive scholarly reference. Additionally, the study explores key concerns in utility grids' auxiliary control mechanisms, emphasizing information‐sharing system limits. The goal is to demonstrate the importance of auxiliary control and evaluate its challenges, such as latency, which require new solutions for a seamless transition to a sustainable energy future through rigorous academic assessment. At the auxiliary level, complex, decentralized regulatory mechanisms are recommended to handle transmission channel bandwidth and operational overhead in energy utility networks. These innovative measures have the potential to transform the fundamental structure of our energy landscape, heralding in unprecedented efficiency and sustainability.

Section: Recent Published Work On Mgsmentioning

confidence: 99%

“…Reliance on the central supervisor to a high degree. [26] Capability of connecting a DESs to the MGs without having any impact on the central controller of the MG…”

Section: Pros Of Central Mechanism Cons Of Central Mechanism Referencementioning

confidence: 99%

The nexus of energy in microgrids: A review on communication barriers in distributed networks auxiliary controls

Ahmed,

Basit,

e Mustafa

et al. 2023

“…These voltage oscillations can produce large current ripples of the local grid-forming DER. Knowing that the local grid-forming unit in DC NGs is typically a BESS, these current ripples can significantly reduce BESS lifetime [26,27]. Therefore, a more advanced NG voltage control strategy is desirable to increase the system efficiency and reliability.…”

Section: Voltage Regulation Of Local DC Busesmentioning

confidence: 99%

Adaptive control and management of multiple nano‐grids in an islanded dc microgrid system

Abadi

Khalili

Habibi

et al. 2022

Self Cite

This paper presents an adaptive control framework for the flexible and effective management and control of clustered DC nano-grids (NGs) in an islanded DC microgrid system. It is assumed that each NG contains a photovoltaic (PV) system, a battery energy storage system (BESS), local loads, and a gateway (GW) module. Each NG has a hierarchical control system consisting of a decision-making module and low-level controllers. The decisionmaking module ensures various desirable features including plug-and-play operation of NGs, maximum utilization of PV power generations, and avoiding state of charge (SoC) violation of batteries. Moreover, an adaptive model predictive control (AMPC) strategy is proposed to regulate the voltage of the NG local DC buses in the presence of nonlinear loads. This approach improves the performance of the NG voltage control system and reduces the current ripples of BESSs, thereby enhancing the lifetime of the batteries. In addition, a smart switching consensus-based control strategy is designed that provides flexible power sharing among the NGs to balance the SoC of BESSs in which the BESSs altogether imitate the behaviour of a single cloud energy storage system (ESS). Finally, the performance of the proposed control system is verified by simulating the DC microgrid in MATLAB/Simulink.

“…To this end, in grid‐forming HESS technologies, usually a filtration‐based (FB) current allocation system is utilized in the feedback control loop of the BESS and SC power electronic converters which assigns the high‐frequency current variations to the SC and low‐frequency parts to the BESS. The bandwidth of this filter is also selected based on the energy storage capacity of the SC and required power smoothing level for the BESS [15]. In conclusion, an effective hybridization of a BESS with an SC promotes the stability and voltage quality of the MG as well as enhances the lifetime of the BESSs.…”

Section: Introductionmentioning

confidence: 99%

“…To address these issues, hybrid energy storage systems (HESSs) can be applied in which a supercapacitor (SC) is utilized in tandem with a BESS to absorb the instantaneous and rapid power fluctuations, thereby smoothing the output power or current of the BESS and improve the transient response of the voltage control system [15,16]. Compared to the BESSs, SCs have higher power density, so they can release/absorb more energy in a noticeably shorter time.…”

Section: Introductionmentioning

confidence: 99%

Effective utilization of grid‐forming cloud hybrid energy storage systems in islanded clustered dc nano‐grids for improving transient voltage quality and battery lifetime

Abadi

Bidram

2023

Self Cite

This paper proposes and develops the idea of using a community supercapacitor (SC) in an islanded DC multiple nano-grids (MNG) system. In the proposed structure, the community SC works in tandem with the community/cloud battery energy storage system (CBESS) of the DC MNG. This combination forms a grid-forming battery-supercapacitor cloud hybrid energy storage system (CHESS), which is responsible for maintaining the voltage stability and power balance at the common DC bus of the MNG system. Also, to effectively utilize the SC capacity, this paper proposes a modified control structure for each DC nano-grid enabling the local BESS units to coordinate with the community SC. Then, it is shown that, in the proposed grid-forming CHESS technology, the output power of all the local and community BESS units has significantly smoother power variations leading to a higher battery lifetime. Additionally, it is shown that the proposed CHESS technology can improve the voltage stability of the system leading to higher voltage quality. Moreover, it is discussed analytically that the proposed CHESS technology requires less energy storage capacity for the community SC compared to its equivalent MNG with a distributed SC architecture. Finally, these results are verified by simulating two case-study MNGs in MATLAB/Simulink.