Evaluation of Different Optimization Techniques and Control Strategies of Hybrid Microgrid: A Review

Abstract

Energy consumption is increasing rapidly; hence, the energy demand cannot be fulfilled using traditional power resources only. Power systems based on renewable energy, including solar and wind, are effective and friendly for the environment. Islanded hybrid microgrid systems (IHMS) are relatively new in this industry and combine two or more sustainable sources, such as wind turbines, solar photovoltaic (PV), and other renewable alternatives, ocean, wave, and geothermal energy, etc. While sustainable, long-lasting power sources are the best choice to satisfy the growing energy demands, they are still not yet ready to be used on a large scale due to their stochastic characteristics. Furthermore, integrating these sources into the existing energy system can cause high technical difficulties, due to the stochastic nature of solar and wind in the conventional grid system and common stand-alone framework. A review of research and applications of the effective hybridization of renewable energy sources is therefore essential to address those technical and economic issues and ensure system stability, reliability, and cost-effectiveness. This article discusses the challenges that might arise when a PV plant and a wind power station are combined to produce power for the conventional main grid or in a stand-alone system. In addition, this analysis provides light on optimization approaches for improving power quality and cost-effectiveness in a solar and wind integrated IHMS. Voltage fluctuation, frequency deviation, and the uncertain nature of solar irradiation and wind sources are significant challenges for both grid-connected and standalone hybrid systems. This study then provides an overview of the control strategies which might help enhance the integration of the IHMS in producing electricity for distribution to the grid-connected load and the islanded load. In this study, the possible issues that can hinder the smooth integration of these renewable sources have been discussed. Finally, this study discusses the recent platforms being used in IHMS as well as the potential of dispatch strategies on solar and wind-integrated IHMS.

Multi-Angle Reliability Evaluation of Grid-Connected Wind Farms with Energy Storage Based on Latin Hypercube Important Sampling

“…In order to limit the output power of the wind farm and the energy storage system, it is required that the sum of the output of the wind farm and the energy storage battery should not exceed P L (t)•η. The discharge power of the energy storage battery is expressed as follows [20,21]:…”

“…Strategy 2: When the output of the wind farm is less than P L (t)•η, and the output of the conventional power plant cannot meet the demand of the residual load, the energy storage system starts to discharge. The discharge power of the energy storage system is expressed as follows [20,21]:…”

Centralized monitoring of a cost efficient PLC‐SCADA based islanded microgrid considering dispatch techniques

“…The global growth in energy demand has resulted in a large‐scale utilization of fossil fuel resources for energy generation. This technique, however, has a number of negative effects on human health and the environment [1]. Fossil fuel consumption adds to the greenhouse effect and, as a result, global warming.…”

A hybrid combination of EV charging stations with renewable energy sources for powering a residential community. A techno‐economic perspective

“…Other authors focused on the use of hybrid RE systems, specifically microgrid optimization, and control. [19][20][21][22] Among them, shezen et al 20 reviewed the control strategies that may improve the integration of hybrid microgrid systems in producing electricity for grid-connected and islanded loads. This study reviewed the potential obstacles to renewable energy integration.…”