Study on the Power Generation Data of High-Power BIPV Grid-Connected PV Power Station

2012 ◽  
Vol 608-609 ◽  
pp. 132-136
Author(s):  
De Jun Li ◽  
Hao Fang
Keyword(s):  
Power Generation ◽  
Solar Cell ◽  
High Power ◽  
Polycrystalline Silicon ◽  
Power Station ◽  
Solar Cell Performance ◽  
Generating Capacity ◽  
One Year ◽  
Capacity Data ◽  
Pv Grid

The study start with the generating capacity data of a 800kWp high power BIPV Grid-Connected PV power station in one year, analysis the condition that the solar cell performance and climate affection. Focus on analyzing inverter condition and yearly power generating capacity, monthly power generating capacity, daily power generating capacity.Time Period power generating capacity of Mono-si and polycrystalline silicon two types of small PV grid-connected power station.Analysis the problems on BIPV at same time and draws the corresponding conclusion.

Direct Correlation of Solar Cell Performance with Metal Impurity Distributions in Polycrystalline Silicon using Synchrotron-Based X-ray Analysis

1998 ◽  
Vol 524 ◽  
Author(s):  
S. A. McHugo ◽  
A. C. Thompson ◽  
G. Lamble ◽  
A. MacDowell ◽  
R. Celestre ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Polycrystalline Silicon ◽  
Current Method ◽  
Chemical State ◽  
Limiting Factors ◽  
Metal Impurity ◽  
Solar Cell Performance ◽  
X Ray ◽  
X Ray Absorption

ABSTRACTThe work presented here directly measures metal impurity distributions and their chemical state in as-grown and fully processed polycrystalline silicon used for terrestrial-based solar cells. The goal was to determine if a correlation exists between poorly performing regions of solar cells and metal impurity distributions as well as to ascertain the chemical state of the impurities. Synchrotron-based x-ray fluorescence mapping and x-ray absorption spectroscopy, both with a spatial resolution of lμm, were used to measure impurity distributions and chemical state, respectively, in poorly performing regions of polycrystalline silicon. The Light Beam Induced Current method was used to measure minority carrier recombination in the material in order to identify poor performance regions. We have detected iron, chromium, nickel, gold and copper impurity precipitates and we have recognized a direct correlation between impurity distributions and poor performing regions in both as-grown and fully processed material. Furthermore, from x-ray absorption studies, we have initial results, indicating that the Fe in this material is in oxide form, not FeSi2,. These results provide a fundamental understanding into the efficiency-limiting factors of polycrystalline silicon solar cells as well as yielding insight for methods of solar cell improvement.

Research of Available Capability of Accommodating PV Power Generation of Tibet Power Grid Based on Capacity of Peak Load Regulation Constraints

2014 ◽  
Vol 1008-1009 ◽  
pp. 40-43
Author(s):  
Xiao Yan Jiang ◽  
Chuan He ◽  
Xiao Fei Liu
Keyword(s):  
Power Generation ◽  
Direct Current ◽  
Power Grid ◽  
Peak Load ◽  
Stable Operation ◽  
Power Station ◽  
Load Regulation ◽  
Pv Grid ◽  
Pv Power Generation ◽  
Grid Based

In recent years, along with the continuous expansion of the scale of photovoltaic (PV) power generation in Tibet, the proportion of PV Grid-connected capacity for Tibet power grid became higher increasingly, which brought great challenges to the secure and stable operation of the grids. So we do those studies on the available capability of accommodating PV power generation of Tibet power grid. Based on the way of capacity of peak load regulation and the minimum output in 2012, this paper simulates and analyzes the available capability of accommodating PV power generation under three boundary conditions, considering the factor of Qinghai-Tibet direct current participating in regulation. The analysis supports that the rate of discharging light accounts for 34.09 percent, 20.57 percent and 5.61 percent after PV power station connecting to the grid, if regardless of the measures of depth peak load regulation such as discharging light.

scholarly journals Characterization of a Bifacial Photovoltaic Panel Integrated with External Diffuse and Semimirror Type Reflectors

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
P. Ooshaksaraei ◽  
K. Sopian ◽  
R. Zulkifli ◽  
M. A. Alghoul ◽  
Saleem H. Zaidi
Keyword(s):  
Power Generation ◽  
Solar Cell ◽  
Silicon Wafer ◽  
Rear Surface ◽  
Solar Panel ◽  
Back Surface ◽  
Solar Cell Performance ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Diffuse Reflector

Silicon wafer accounts for almost one-half the cost of a photovoltaic (PV) panel. A bifacial silicon solar cell is attractive due to its potential of enhancing power generation from the same silicon wafer in comparison with a conventional monofacial solar cell. The bifacial PV cell is able to capture solar radiation by back surface. This ability requires a suitable reflector appropriately oriented and separated from the cell’s rear surface. In order to optimize the bifacial solar cell performance with respect to an external back surface reflector, diffuse and semimirror reflectors were investigated at various angles and separations from the back surface. A simple bifacial solar panel, consisting of four monocrystalline Si solar cells, was designed and built. Reflection from the rear surface was provided by an extended semimirror and a white-painted diffuse reflector. Maximum power generation was observed at 30° with respect to ground for the semimirror reflector and 10° for diffuse reflector at an optimized reflector-panel separation of 115 mm. Output power enhancement of 20% and 15% from semimirror and diffuse reflectors, respectively, were observed. This loss from diffuse reflector is attributed to scattering of light beyond the rear surface capture cross-section of the bifacial solar panel.

scholarly journals Economic Analysis of 4MW Distributed Photovoltaic Power Generation Project Based on PVsyst Software Simulation

2019 ◽  
Vol 118 ◽  
pp. 02072
Author(s):  
Hong Wang ◽  
Zhijie Wang ◽  
Xiaolin Fu
Keyword(s):  
Power Generation ◽  
Operation Mode ◽  
Reference Value ◽  
First Year ◽  
Power Station ◽  
Photovoltaic Power ◽  
Access Mode ◽  
Generating Capacity ◽  
Power Plant Operation ◽  
Suitable Power

We use PVsyst software to simulate and calculate the first year electricity generation of 4 MW distributed photovoltaic power generation project. In order to analyze and select the suitable power plant operation mode, the total generating capacity of photovoltaic power station in 25 years has been estimated by using component attenuation of 25 years. This research reports on the findings shown by PVsyst software that evaluates the economy aspects brought by two kinds of operation modes which are full grid access mode and spontaneous use of residual power grid access mode. The research content has reference value for the construction of roof distributed photovoltaic power station in China.

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

scholarly journals Antireflection Improvement and Junction Quality Optimization of Si/PEDOT:PSS Solar Cell with the Introduction of Dopamine@Graphene

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5986
Author(s):  
Tao Chen ◽  
Hao Guo ◽  
Leiming Yu ◽  
Tao Sun ◽  
Anran Chen ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
High Performance ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Electrochemical Impedance Spectra ◽  
Solar Cell Performance ◽  
Photovoltaic Conversion ◽  
Photovoltaic Conversion Efficiency

Si/PEDOT: PSS solar cell is an optional photovoltaic device owing to its promising high photovoltaic conversion efficiency (PCE) and economic manufacture process. In this work, dopamine@graphene was firstly introduced between the silicon substrate and PEDOT:PSS film for Si/PEDOT: PSS solar cell. The dopamine@graphene was proved to be effective in improving the PCE, and the influence of mechanical properties of dopamine@graphene on solar cell performance was revealed. When dopamine@graphene was incorporated into the cell preparation, the antireflection ability of the cell was enhanced within the wavelength range of 300~450 and 650~1100 nm. The enhanced antireflection ability would benefit amount of the photon-generated carriers. The electrochemical impedance spectra test revealed that the introduction of dopamine@graphene could facilitate the separation of carriers and improve the junction quality. Thus, the short-circuit current density and fill factor were both promoted, which led to the improved PCE. Meanwhile, the influence of graphene concentration on device performances was also investigated. The photovoltaic conversion efficiency would be promoted from 11.06% to 13.15% when dopamine@graphene solution with concentration 1.5 mg/mL was applied. The achievements of this study showed that the dopamine@graphene composites could be an useful materials for high-performance Si/PEDOT:PSS solar cells.

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