Optimization and assessment of an off‐grid photovoltaic–diesel–battery hybrid sustainable energy system for remote residential applications

An important aspect of the off-grid utilization of hybrid generation systems is the integration of energy storage facilities into their structures, which allows for improved power supply reliability. However, this results in a significant increase in the cost of such systems. Therefore, it is justified to use optimization resulting in the minimization of the selected economic indicator taking into account the most important technical constraints. For this reason, this work proposes an algorithm to optimize the structure of a hybrid off-grid power distribution system (with electrochemical energy storage), designed to supply a load with known daily energy demand. The authors recommend genetic algorithm utilization as well as a modified criterion for evaluating the quality of solutions based on the Levelized Cost of Energy (LCOE) index. Several technical and economic analyses were presented, including unit costs, power distribution of the wind and solar sections, nominal battery capacity, SSSI index (System Self-Sufficiency Index), etc. The model of the system includes durability of the elements which have a significant impact on the periodic battery replacement. The tests were carried out for two types of loads and two types of electrochemical batteries (NMC—Lithium Nickel Manganese Cobalt Oxide; and PbO2—Lead-Acid Battery), taking into account the forecast of an increased lifetime of NMC type batteries and decreasing their price within five years. The proposed synthesis method of photovoltaic-wind (PV-wind) hybrid off-line systems leads to limiting the energy capacity of electrochemical storages. Based on the analyses, the authors proposed recommended methods to improve (reduce) the value of the criterion index (LCOE) for PV-wind off-grid systems while maintaining the assumed level of power supply reliability.

show abstract

“…In Ref. [24], the simulation results from HOMER was validated by using Photovoltaic System Tools (PVSYST) renewable energy platform.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Commercial software [5] [ [21][22][23][24] [ [21][22][23][24] Multi-criteria decision-making methods [16] [16]…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization of a PV-Wind Hybrid Power Supply Structure with Electrochemical Storage Intended for Supplying a Load with Known Characteristics

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The system optimal configuration was found for different cases and the TLBO performed better than the other techniques. Shezan 14 proposed a standalone system consisted of PV-diesel-battery to supply a local load. HOMER and PVSYST were employed to prove the feasibility of the suggested system.…”

Section: Literature Survey and Contributionmentioning

confidence: 99%

“…Electrical power generated from the RESs and power purchased from the energy market should be sufficient to satisfy the load demand as in Equation (14).P…”

Section: Power Balance Constraintmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid wind‐solar grid‐connected system planning using scenario aggregation method

Abuelrub

Al‐Masri

Singh

2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary Hybrid PV‐wind distribution system planning is challenging due to the uncertainties of the system components. Therefore, this paper presents a novel optimization procedure based on scenario aggregation (SA) approach for the planning of such a distribution system. The proposed procedure uses random distributions, which are built for each time step, to model the system uncertainties. System uncertainties include solar irradiance, wind velocity, system load, and energy market price. The objective function of the optimization problem measures the annual cost of the proposed system. Results of the suggested SA optimization procedure are then compared with results of two‐stage stochastic programming (SP) to verify the effectiveness of the proposed method. A case study for a grid‐connected hybrid PV‐wind distribution system in North Texas is presented to illustrate the proposed method. One‐year system components' data are collected to create the stochastic distributions needed to represent system uncertainties. The results of the SP give optimal system configuration that minimizes the system annual cost and meets reliability and load requirements of the proposed system. These results are compared with those obtained using the simpler SA approach. The case study shows that the proposed SA method gives close results compared with two‐stage SP when the uncertainty of the system is reasonable.

show abstract

Assessment of the levelized cost of electricity for a standalone power plant in Morocco: A case study

Fathi

Outzourhit

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

This paper presents a detailed analysis of the levelized cost of electricity (LCOE) for a real photovoltaic(PV)‐wind‐battery system installed in a remote area in Morocco. Besides the evaluation of the existing autonomous system, different scenarios are discussed. A techno‐economic evaluation of a PV‐battery system is carried out. Additionally, in order to enrich the discussion, the case of possible connection to the national grid, either in a medium‐ or low‐voltage level is considered. Costs were analyzed using on‐site collected data of energy production and initial (realistic) costs of the different components of the power plant with various discount and degradation rates. In contrast to the grid‐connected mode where all the available energy could be exploited, the detailed analysis shows that the LCOE is affected by the energy management strategy (droop control) in the standalone mode where a part of the energy cannot be used. Furthermore, the degradation rate, the discount rate, and the battery lifetime affect the LCOE. The results show that the LCOE for the PV‐wind‐battery system is optimal compared to the PV‐battery system under different system designs, especially for the low voltage grid‐connection where the grid parity could be achieved.

show abstract

Optimization and assessment of an off‐grid photovoltaic–diesel–battery hybrid sustainable energy system for remote residential applications

Cited by 43 publications

References 41 publications

Optimization of a PV-Wind Hybrid Power Supply Structure with Electrochemical Storage Intended for Supplying a Load with Known Characteristics

Optimization of a PV-Wind Hybrid Power Supply Structure with Electrochemical Storage Intended for Supplying a Load with Known Characteristics

Hybrid wind‐solar grid‐connected system planning using scenario aggregation method

Assessment of the levelized cost of electricity for a standalone power plant in Morocco: A case study

Contact Info

Product

Resources

About