Analysis of measured and simulated performance data of a 3.2kWp grid-connected PV system in Port Elizabeth, South Africa

Okello, Denis; Dyk, E.E. van; Vorster, F.J.

doi:10.1016/j.enconman.2015.04.064

Cited by 138 publications

(52 citation statements)

References 7 publications

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“…The study concluded that the most feasible option from an economic point of view in Riyadh is a grid-connected system without battery storage. In [29], Okello et al carried out a comparative study between the real measurements and simulated performance of a 3.2 kWp GCPVS located at Nelson Mandela Metropolitan University, South Africa. The system supplies 5757 kWh to the local distribution network.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Feasibility Assessment of Grid-Connected PV Systems for Residential Buildings in Saudi Arabia—A Case Study

2019

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This paper presents a techno-economic feasibility evaluation for a grid-connected photovoltaic energy conversion system on the rooftop of a typical residential building in Jeddah, one of the major cities in Saudi Arabia. In Saudi Arabia, electric energy consumption is the highest in the domestic sector, with 48.1% of the total electricity consumption. As the power generation in Saudi Arabia mainly relies on conventional resources, environmental pollution and energy sustainability are major concerns. To minimize these issues, the Saudi government is in the process of maximizing the utilization of renewable energy resources for power generation. Investing in solar energy in Saudi Arabia is important because the country is witnessing a rapid increase in load demand, with annual growth rates of 6%. In this paper, the system advisor model software for renewable energy modeling has been utilized to perform a techno-economic feasibility analysis of a residential grid-connected solar photovoltaic (PV) system, which is proposed for a typical apartment in Saudi Arabia, on the basis of various key performance indicators, namely: yield factor, capacity factor, performance ratio, levelized cost of energy, net present value, internal rate of return, and payback period. A sensitivity analysis that investigates the impact of varying techno-economic parameters on system performance and feasibility is also discussed. The size of the PV system for a typical Saudi Arabian apartment is estimated to be 12.25 kW. Results have shown that the proposed system can generate 87% of the electricity needs of an apartment. The technical analysis showed that the capacity factor and the performance ratio were 22% and 78% respectively. The levelized cost of energy and net present value revealed competitive figures of 0.0382 $/kWh and $4378, respectively. The investigations indicate that residential PV installations are an effective option for energy management in the country.

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Section: Introductionmentioning

confidence: 99%

Techno-Economic Feasibility Assessment of Grid-Connected PV Systems for Residential Buildings in Saudi Arabia—A Case Study

2019

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“…The reference yield has been calculated as YR = (HDNI/HR) [3,25], where HDNI represents the direct normal irradiance while HR represents the array reference irradiance (usually taken as 1 kW/m 2 ). The performance ratio (PR) has been calculated by PR = (YF/YR) [23,24,26]. The instantaneous inverter efficiency has been calculated as ηinv = PAC/PDC × 100% [27].…”

Section: Resultsmentioning

confidence: 99%

“…The daily energy output from the inverter (EAC) can be determined by integrating PAC. The final yield of the HCPV system has been calculated by using EAC divided by the rated PV capacity (Prated), as YF = (EAC/Prated) [22][23][24], where Prated for the present HCPV system has been characterized as 9 kWp. The reference yield has been calculated as YR = (HDNI/HR) [3,25], where HDNI represents the direct normal irradiance while HR represents the array reference irradiance (usually taken as 1 kW/m 2 ).…”

Section: Resultsmentioning

confidence: 99%

Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

Chen

et al. 2016

Energies

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High concentrating photovoltaic (HCPV) is a promising technique for the practical commercial utilization of solar energy. However, the performance of a HCPV system is significantly influenced by environmental parameters such as solar direct normal irradiance (DNI) level and environmental temperature. This paper analyzes the performance of a 9 kW p grid-connected HCPV system in Kunming (Yunnan, China), during practical field operations over an entire year, and discusses how the environmental parameters influence the performance from both the energy conversion and power inversion perspective. Large variations in the performance of the HCPV system have been observed for different months, due to the respective changes in the environmental parameters. The DNI level has been found to be a dominant parameter that mainly determines the amount of energy production as well as the performance ratio of the HCPV system. The environmental temperature and wind velocity have less influence on the system performance ratio than expected. Based on the performance of the present HCPV system, a quantified correlation between the output power and the direct normal irradiance has been derived, which provides guidelines for both the cogent application and the modeling of HCPV techniques for grid-connected power generation.

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“…The yearly fixed optimal tilt angle (β Yopt ) for flat-plate photovoltaic (PV) module can be determined from the expression; β Yopt = 3.7 + 0.69│Ø│ (12) where Ø is the latitude of the location. PVSyst software is then used to determine G 1 (that is the total yearly global radiation) on the titled plane at the yearly fixed optimal tilt angle (β Yopt ).…”

Section: Comparison Of the Yearly Fixed And Seasonally Adjusted Optimmentioning

confidence: 99%

“…In this wise, seasonal adjustment of tilt-angle proves to be simpler and easier to be implemented in practice [1]. In particular, in Nigeria, as well as in PVSyst simulation software [9][10][11][12][13], two seasons are identified, namely; winter and summer. As such, winter and summer optimal tilt angles are to be determined and the PV module tilt angle need to be adjusted only two times in a year.…”

Section: Introductionmentioning

confidence: 99%

Determination of Optimal Tilt Angle for Biannual Seasonally Adjusted Flat-Plate Photovoltaic Modules Based on Perez Transposition Model

Ekanem¹

2017

AJSEA

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Determination of optimal tilt angle for seasonally adjusted flat-plate photovoltaic (PV) modules based on Perez transposition model is presented. Particularly, two seasons are considered, namely winter and summer. As such, two optimal tilt angles are obtained which requires that the tilt angle the of flat plate PV module will be adjusted twice in a year. The method is based on yearly global radiation incident on a horizontal plane as downloaded from NASA website. Furthermore, PVSyst software that uses transposition model is used to generate the yearly global radiation incident on a tilted plane for various tilt angles, from 0° to 46°. The location used in the study is at longitude of 7.860761, latitude of 5.011474 and elevation of 67.506 m. The results show that the winter season optimal tilt angle is 25.46° the summer season optimal tilt angle is 0° and the yearly fixed optimal tilt angle is 7.16°. The annual transposition factor for the seasonally adjusted tilt angle is 1.05 whereas annual transposition factor for the year fixed tilt angle 1.01. The result amounts to 3.6% improvement is solar radiation capture due to the seasonal adjustment of the tilt angle when compare to the yearly fixed tilt angle.

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Analysis of measured and simulated performance data of a 3.2kWp grid-connected PV system in Port Elizabeth, South Africa

Cited by 138 publications

References 7 publications

Techno-Economic Feasibility Assessment of Grid-Connected PV Systems for Residential Buildings in Saudi Arabia—A Case Study

Techno-Economic Feasibility Assessment of Grid-Connected PV Systems for Residential Buildings in Saudi Arabia—A Case Study

Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

Determination of Optimal Tilt Angle for Biannual Seasonally Adjusted Flat-Plate Photovoltaic Modules Based on Perez Transposition Model

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