The role of wind-solar hybrid plants in mitigating renewable energy-droughts

Gangopadhyay, Anasuya; Seshadri, Ashwin K; Sparks, Nathan; Toumi, Ralf

doi:10.1016/j.renene.2022.05.122

Cited by 32 publications

(9 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis was performed on hourly horizontal wind reanalysis product ERA5 from the European Centre for Medium-Range Weather Forecasts [22], for the summer monsoon (high-wind) months (June, July, August and September-JJAS) for the year 2010-2019 for the Indian region. Summer monsoon (JJAS) is selected for analysis as it is the high wind generation season in India [7]. We examined wind-speeds at 100 m above ground level, since the hub height of various wind turbines are around that height.…”

Section: Datamentioning

confidence: 99%

“…With increasing renewables, the management of variability in a renewable-rich electricity grid becomes crucial. The integration of wind energy is challenged by variability on different time scales (interannual, seasonal, diurnal, and minute to minute) [2][3][4][5][6][7]. Smoothing of wind generation or reduction of variance in the aggregate generation is required for reducing variability and fluctuations in the electric grid.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Beneficial role of diurnal smoothing for grid integration of wind power

Gangopadhyay

Seshadri

Toumi

2023

Environ. Res. Lett.

Self Cite

View full text Add to dashboard Cite

Smoothing of generation variability, i.e., reduction of variance in the aggregate generation is crucial for grid integration of large-scale wind power plants. Prior studies of smoothing have focused on geographical smoothing, based on distance. In contrast, we propose a novel concept “diurnal smoothing” that depends on spatial variations in the timing of seasonal-mean diurnal cycle peak. Considering the case of India, which experiences a strong diurnal cycle of wind-speed, we show how spatial heterogeneity in the wind diurnal cycle can be exploited to smooth wind power variability over and above geographical smoothing. For any given separation distance between sites, the hourly wind speed correlation is highly variable. Difference in timing of the diurnal cycle peak is an important factor for explaining this variability and we define smoothing from differently timed seasonal-mean diurnal cycle as “Diurnal smoothing”. We show that apart from separation distance, the diurnal cycle is crucial for correlation among sites separated by 200 km or more with strong diurnal cycles (amplitude more than approximately 0.5 m/s). Thus, diurnal smoothing is a vital factor in the aggregation of large wind power plants, and grid integration is benefited by considering (in addition to distance) new wind plant sites with largely separated diurnal cycles, especially those differing by roughly 12 hours. Such diurnal smoothing is relevant for regions across the world with strong wind speed diurnal cycles. Ultimately grid integration depends on variations in total wind and solar generation and demand. Hence, their combined effects must be studied.

show abstract

Section: Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Beneficial role of diurnal smoothing for grid integration of wind power

Gangopadhyay

Seshadri

Toumi

2023

Environ. Res. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Firstly, this study provided an overview of the research in the available literature on the decision‐making problem for the selection of an exploited renewable energy sites (Le & Nhieu, 2022). Current studies show an overview of the exploitation of renewable energy sources, which are primarily directed towards a specific energy type dominated by wind and solar energy because they are less expensive than conventional energy sources (Chang et al, 2022; Esteban et al, 2011; Gangopadhyay et al, 2022). DEA methods are used diversely, extensively, and in combination with evaluation criteria in site selection projects.…”

Section: Literature Reviewmentioning

confidence: 99%

A prospect theory extension of data envelopment analysis model for wave‐wind energy site selection in New Zealand

Wang,

Nguyen,

Nhieu

et al. 2023

Manage Decis Econ

View full text Add to dashboard Cite

Renewable energy sources have been utilized by countries worldwide, but offshore energy exploitation projects remain highly promising for both the world and New Zealand specifically. The selection of equipment installation locations can be challenging and requires significant investment, prompting the need for optimization in offshore energy exploitation. Wind and wave location (WWL) integrated sites offer a highly potential solution for reducing installation costs and enhancing efficiency in renewable energy exploitation. However, the decision‐making process for selecting equipment locations is crucial and directly affects the outcome. This study aims to evaluate and consider sustainable and effective equipment installation sites based on both quantitative indicators and behavioral psychology of decision making. To achieve this goal, the study utilizes the prospect theory Data Envelopment Analysis (PT‐DEA) model, which builds on PT to analyze and evaluate the effectiveness of offshore installation site selection with consideration for human psychology. By combining the results of quantitative indicators and decision‐making behavior, the study identifies sustainable and effective offshore installation sites, recommending appropriate equipment installation locations WWL. The study is also compared and referenced with relevant plans, projects, and development policies in New Zealand for confirmation.

show abstract

“…On shorter timescales, a particular resilience challenge to highly renewable systems are multi‐day periods of low renewable generation, often termed wind droughts, or dunkelflaute if solar generation is also included. Gangopadhyay et al (2022) investigated the potential for these periods of prolonged low wind generation over India using a stochastic weather generator, finding that there tend to be dipoles in generation availability between Rajasthan (northwest India) and southern India. This suggests that regional‐scale wind droughts could be avoided through good interconnection of neighbouring energy grids.…”

Section: Introductionmentioning

confidence: 99%

Quantifying renewable energy potential and realized capacity in India: Opportunities and challenges

Hunt,

Bloomfield

2024

Meteorological Applications

View full text Add to dashboard Cite

As both the population and economic output of India continue to grow, so does its demand for electricity. Coupled with an increasing determination to transition to net zero, India has responded to this rising demand by rapidly expanding its installed renewable capacity: an increase of 60% in the last 5 years has been driven largely by a quintupling of installed solar capacity. In this study, we use broad variety of data sources to quantify potential and realized capacity over India from 1979 to 2022. For potential capacity, we identify spatiotemporal patterns in solar, wind, hydro and wave power. We show that solar capacity factor is relatively homogeneous across India, except over the western Himalaya, and is highest during the pre‐monsoon. Wind capacity factor is highest during the summer monsoon, and has high values off the southern coast, along the Western Ghats, and in Gujarat. We argue that wave power could be a useful source of renewable energy for the Andaman and Nicobar Islands, which are not connected to the main Indian power grid. Using gridded estimates of existing installed capacity combined with our historical capacity factor dataset, we create a simple but effective renewable production model. We use this model to identify weaknesses in the existing grid—particularly a lack of complementarity between wind and solar production in north India, and vulnerability to high‐deficit generation in the winter. We discuss potential avenues for future renewable investment to counter existing seasonality problems, principally offshore wind and high‐altitude solar.

show abstract

The role of wind-solar hybrid plants in mitigating renewable energy-droughts

Cited by 32 publications

References 35 publications

Beneficial role of diurnal smoothing for grid integration of wind power

Beneficial role of diurnal smoothing for grid integration of wind power

A prospect theory extension of data envelopment analysis model for wave‐wind energy site selection in New Zealand

Quantifying renewable energy potential and realized capacity in India: Opportunities and challenges

Contact Info

Product

Resources

About