Key Technology Optimization and Development of New Energy Enterprises of Photovoltaic Power Generation

Nan, Jiangping

doi:10.13052/dgaej2156-3306.3716

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Three elements make up this device: the center or fulcrum, two weights, the one that creates movement and the one that causes it. The ideal mechanical advantage (IMA) of the lever is the ratio of input to output force (1). IMA of the fulcrum can determine the balance moments lever.…”

Section: Mathematical Formulation Of Sclpsastmentioning

confidence: 99%

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Comparative Evaluation of Second-Class Lever Principle Based Single-Axis Solar Tracking System and Conventional System

Kumba

Simon

Sundareswaran

et al. 2023

DGAEJ

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This article presented the comparative study of the second-class lever principle single-axis solar tracking system (SCLPSAST) with the fixed solar axis (FSA) system. The SCLPSAST system continuously tracks the sun regardless of atmospheric conditions from sunrise to sunset. This SCLPSAST system is a cost effective and straightforward solar tracking system built with negligible operational costs. The Photovoltaic (PV) panel are directed towards the sun throughout the year without using any additional power. The main advantage is that an external motor is not required to control the solar panel. A detailed performance evaluation of the SCLPSAST system is carried out for 90 days (from Jan 2022 to Mar 2022) with the FSA system. Finally, the working functionality, efficiency improvement, and experimental consequences of the SCLPSAST system are detailed. SCLPSAST and the fixed solar system generated 8.92 kWh and 7.03 kWh, respectively, which is around 26.87% more energy than the FSA system.

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Section: Mathematical Formulation Of Sclpsastmentioning

confidence: 99%

“…The PV module is an essential component in solar energy applications. The PV system converts solar irradiation into energy, harnesses renewable energy, and plays a significant role in the energy transition in our energy system [1,2]. The technological development in PV offers us the chance to generate clean energy at a low cost.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Second-Class Lever Principle Based Single-Axis Solar Tracking System and Conventional System

Kumba

Simon

Sundareswaran

et al. 2023

DGAEJ

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“…LI Wei-jun et al [2] proposed an energy efficiency evaluation method of photovoltaic power generation system based on analytic hierarchy process and fuzzy comprehensive evaluation, analysed the influencing factors of energy efficiency of photovoltaic power generation system, and established the energy efficiency evaluation index system of photovoltaic power generation system. Qian Jihong [3] developed a distributed photovoltaic energy efficiency evaluation system software by constructing a fine loss model of each link of the photovoltaic power station and defining three types of energy efficiency indicators in combination with the actual situation. Ma Sanmei [4] proposed a three-stage grid-connected photovoltaic power station system energy efficiency analysis model for the current problems such as cumbersome calculation steps, complex calculation methods, strong professionalism, and troublesome operation.…”

Section: Introductionmentioning

confidence: 99%

Research on performance ratio composition and standard energy efficiency ratio correction method of photovoltaic power station

Peng,

Wang,

et al. 2024

J. Phys.: Conf. Ser.

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The performance ratio (PR) of the system is used to quantify the power generation efficiency of the photovoltaic power generation system. The size of the index is affected by many factors. After the environmental impact is compensated, the standard energy efficiency ratio (PRstc) of the system is obtained. PRstc is an important index for evaluating the power generation efficiency of photovoltaic power stations. Improving the accuracy of PRstc is conducive to improving the state evaluation and analysis capabilities of power stations, providing a theoretical basis for comparative analysis of photovoltaic power stations in different regions, and improving the scientific operation and maintenance of power stations. The PRstc calculation method of the industry standard NB / T 10394-2020 does not consider the influence of the change of the power temperature coefficient of the component and the weak light response of the photovoltaic cell, which ultimately leads to the calculation result less than the actual value. In order to reduce the error in the calculation of PRstc, the mathematical relationship between PR and power loss of photovoltaic power station is discussed. The calculation method of power loss caused by the change of environmental factors is proposed, and the PRstc is calculated by using the variation. Finally, the PRstc is calculated according to the actual operation data of photovoltaic power station, and compared with the calculation method of industry standard NB / T 10394-2020. The results show that when the total irradiation dose is high, the difference between the two PRstc values is less than 2 %. When the total irradiation is low, the calculation result is larger than that of the standard method, and the difference between the two increases with the decrease of the total irradiation. Due to the consideration of the change of power generation caused by the characteristics of photovoltaic modules, the error caused by the change of power temperature coefficient and weak light response of modules is reduced, which is more advantageous than the calculation method of industry standard.

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“…With the development of the economy, the improvement of people's living standards, and the increasing electricity demand, the problem of line loss in the low-voltage area is becoming more and more important, and the abnormal line loss brings great difficulties to the management of line loss [1][2]. After distributed photovoltaic access, because photovoltaic equipment generally does not collect reverse electrical energy, the situation of stealing electricity through photovoltaic equipment is more hidden, which poses a new problem for finding abnormal line loss [3].…”

Section: Introductionmentioning

confidence: 99%

Abnormal line loss identification of distributed PV low-voltage distribution area based on data driven

Ding,

Xu,

Lou

et al. 2023

J. Phys.: Conf. Ser.

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The identification of line loss anomalies in low-voltage distribution networks has been a very challenging problem for a long time. The large-scale access of distributed photovoltaics to the distribution network changes the power flow distribution and further increases the difficulty of identifying abnormal line losses in low-voltage distribution areas. In this paper, an identification method for abnormal line loss in distributed photovoltaic access low-voltage distribution area is proposed. Firstly, we analyze the correlation between the line loss rate and other indicators in the area of distributed photovoltaic access. Secondly, according to the gray correlation degree results, the appropriate indicators are selected, and the k-means clustering algorithm is used to cluster these indicators, through the clustering results, we can detect outliers to determine whether there is a line loss anomaly in the area. Finally, by analyzing the time dispersion degree of the cluster where the outlier point is located, the anomaly coefficient of the area is obtained, and the line loss anomaly is judged according to the anomaly coefficient. To verify the effectiveness of this method, we conduct an empirical analysis of typical containing distributed photovoltaics. Experimental results show that this method can effectively identify the line loss abnormalities in the distribution area containing distributed photovoltaics.

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Key Technology Optimization and Development of New Energy Enterprises of Photovoltaic Power Generation

Cited by 3 publications

References 8 publications

Comparative Evaluation of Second-Class Lever Principle Based Single-Axis Solar Tracking System and Conventional System

Comparative Evaluation of Second-Class Lever Principle Based Single-Axis Solar Tracking System and Conventional System

Research on performance ratio composition and standard energy efficiency ratio correction method of photovoltaic power station

Abnormal line loss identification of distributed PV low-voltage distribution area based on data driven

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