Review of Energy Management System Approaches in Microgrids

Battula, Amrutha Raju; Vuddanti, Sandeep; Salkuti, Surender Reddy

doi:10.3390/en14175459

Cited by 71 publications

(23 citation statements)

References 168 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different types of controls in the energy management system and their characteristics are given in Table 1 [43,44]. Data from other IED (local controllers) are used to give independent control [28] Interoperability and data transmission across all devices [28] Control is instantaneous and uses only data obtained where a PV is located [28] Information Exchange…”

Section: Hybrid Methodsmentioning

confidence: 99%

Analysis of Voltage and Reactive Power Algorithms in Low Voltage Networks

Stanelytė

Radziukynas

2022

Energies

View full text Add to dashboard Cite

The rapid development of renewable energy sources and electricity storage technologies is further driving the change and evolution of traditional energy systems. The aim is to interconnect the different electricity systems between and within countries to ensure greater reliability and flexibility. However, challenges are faced in reaching it, such as the power grid complexity, the system control, voltage fluctuations due to the reverse power flow, equipment overloads, resonance, incorrect island setting, and the diversity of user needs. The electricity grid digitalization in the market also requires the installation of smart devices to enable real-time information exchange between the generator and the user. Inverter-based distributed generation (DG) may be used to control the grid voltage. Smart PV inverters have the capability to supply both inductive and capacitive reactive power to control the voltage at the point of interconnection with the grid, and only technical parameters of smart PV inverters limit this capability. Reactive power control is related to ensuring the quality of voltage in the electricity distribution network and compensating reactive power flows, which is a technical–economic aspect. The goal of this research is to present an analysis of controllers that supply reactive power to the electrical grid via PV systems. This research analyzes recent research on local, centralized, distributed, and decentralized voltage control models in distribution networks. The article compares various approaches and highlights their advantages and disadvantages. The voltage control strategies and methodologies mentioned in the article can serve as a theoretical foundation and provide practical benefits for PV system development in distribution networks. The results of the research show that the local voltage control approach, as well as linear and intelligent controllers, has great potential.

show abstract

Section: Hybrid Methodsmentioning

confidence: 99%

Analysis of Voltage and Reactive Power Algorithms in Low Voltage Networks

Stanelytė

Radziukynas

2022

Energies

View full text Add to dashboard Cite

show abstract

“…Similar to dispatch rule A, the force-discharging rule can be derived by applying interval analyses to Equations ( 1), ( 2) and ( 9) and reveals the interval given in Equation (10). If P miss does not satisfy the lower or upper boundaries of the interval presented in Equation ( 10), load shedding (C3), and renewable curtailment (C10 and C11) will be obtained and P spt bss will be set to discharge as much as possible (C5, C8, C9, and C13).…”

Section: The Dispatch Functionmentioning

confidence: 99%

“…P max dis − P ris dg ≤ P miss ≤ K d × P max dis + P dec dg (10) The dispatch rules for SS1 dispatch mode (A', B', and C') are illustrated in Figure 9. The main differences between these sets of rules and the previous set are that DG is kept OFF, and instead of load shedding, renewable curtailment, or load restoration, POI active power requirement (P set POI ) is updated.…”

Section: The Dispatch Functionmentioning

confidence: 99%

Centralized Microgrid Control System in Compliance with IEEE 2030.7 Standard Based on an Advanced Field Unit

Pouraltafi-kheljan

Uğur²,

Bozulu³

et al. 2021

Energies

View full text Add to dashboard Cite

The necessity for the utilization of microgrids emerges from the integration of distributed energy resources, electric vehicles, and battery storage systems into the conventional grid structure. In order to achieve a proper operation of the microgrid, the presence of a microgrid control system is crucial. The IEEE 2030.7 standard defines the microgrid control system as a key element of the microgrid that regulates every aspect of it at the point-of-interconnection with the distribution system, and autonomously manages operations such as the transitions of operating modes. In this paper, a microgrid control system is developed to achieve real-time monitoring and control through a centralized approach. The controller consists of a centralized server and advanced field units that are also developed during this work. The control functions of the centralized server ensure the proper operation during grid-connected and island modes, using the real-time data received via the advanced field unit. The developed server and the field unit constitute a complete system solution. The server is composed of control function and communication, database, and user interface modules. The microgrid control functions comprise dispatch and transition core-level functions. A rule-based core-level dispatch function guarantees the security of supply to critical loads during the islanded mode. The core-level transition function accomplishes a successful transition between the operation modes. Moreover, a communication framework and a graphical user interface are implemented. The presented system is tested through thecases based on the IEEE 2030.8 standard.

show abstract

“…The state of the art clearly shows that the droop control was the most used control method for sharing the loads demand in a DC microgrid [23][24][25][26][27]. This control method, when the output current increases, linearly reduce the DC output voltage.…”

Section: The Dbs Logicmentioning

confidence: 99%

A Renewable Energy Community of DC Nanogrids for Providing Balancing Services

et al. 2021

View full text Add to dashboard Cite

The massive expansion of Distributed Energy Resources and schedulable loads have forced a variation of generation, transmission, and final usage of electricity towards the paradigm of Smart Communities microgrids and of Renewable Energy Communities. In the paper, the use of multiple DC microgrids for residential applications, i.e., the nanogrids, in order to compose and create a renewable energy community, is hypothesized. The DC Bus Signaling distributed control strategy for the power management of each individual nanogrid is applied to satisfy the power flow requests sent from an aggregator. It is important to underline that this is an adaptive control strategy, i.e., it is used when the nanogrid provides a service to the aggregator and when not. In addition, the value of the DC bus voltage of each nanogrid is communicated to the aggregator. In this way, the aggregator is aware of the regulation capacity that each nanogrid can provide and which flexible resources are used to provide this capacity. The effectiveness of the proposed control strategy is demonstrated via numerical experiments. The energy community considered in the paper consists of five nanogrids, interfaced to a common ML-LV substation. The nanogrids, equipped with a photovoltaic plant and a set of lithium-ion batteries, participate in the balancing service depending on its local generation and storage capacity.

show abstract

Review of Energy Management System Approaches in Microgrids

Cited by 71 publications

References 168 publications

Analysis of Voltage and Reactive Power Algorithms in Low Voltage Networks

Analysis of Voltage and Reactive Power Algorithms in Low Voltage Networks

Centralized Microgrid Control System in Compliance with IEEE 2030.7 Standard Based on an Advanced Field Unit

A Renewable Energy Community of DC Nanogrids for Providing Balancing Services

Contact Info

Product

Resources

About