Computational Fluid Dynamics Methods for Wind Resources Assessment

Upnere, Sabīne; Bezrukovs, Vladislavs; Jēkabsons, Normunds; Gulbe, Linda

doi:10.1007/978-3-030-40616-5_48

Cited by 2 publications

(5 citation statements)

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“…Using the results of a previous publication [38] about the evaluation and dissemination of wind energy potential in the territory of Latvia. Data on the average wind speed and wind energy density in relative units, for example, at station atVenspils-average wind speed 4.1 m/s, average cubic wind speed 5.4 m/s and relative unit 1; respectively at Ainaži station-3.8 m/s, 4.7 m/s, 0.66; at Priekul , i station-3.4 m/s, 4.5 m/s, 0.58; at Saldus station-3.0 m/s, 3.9 m/s, 0.58; and at Daugavpils station 5-2.5 m/s, 3.3 m/s, 0.23.…”

Section: Possibilities Of Res (Wind and Pv) Use For Energy Production...mentioning

confidence: 99%

“…According to the analysis of wind efficiency in Latvia [38], the most suitable region for the installation of low-power wind turbines in Latvia is the eastern coast of the Baltic Sea; the higher elevation in northeastern Latvia, as well as the western region and most of central Latvian territory, are also considered suitable regions. In the rest of the territory of Latvia, wind efficiency is lower-thus, the amount of electricity produced with low-power WT decreases.…”

Section: Possibilities Of Res (Wind and Pv) Use For Energy Production...mentioning

confidence: 99%

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Analysis of Latvian Households’ Potential Participation in the Energy Market as Prosumers

Ļebedeva

Krumins²,

Tamane

et al. 2021

Clean Technol.

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The European Union sets targets for the extensive use of renewable energy. Meanwhile, the energy production network is changing and transferring from the classic “producer to consumer” scheme to new operation models, where a small consumer with local renewable energy systems becomes a producer–prosumer, an active energy consumer who is also an energy producer. This study evaluated a potential of Latvian households’ participation in the energy market as prosumers. The analysis was based on an informal prospective extrapolation data evaluation method, based on real historical data from the Central Statistical Bureau of Latvia, annual reports of distribution and transmission system operators, assessments, and the conclusions of relevant experts. In addition, the real performance of a photovoltaic (PV) system was evaluated to get information on the whole year’s energy balance, and to compare it with seasonal electricity price fluctuation. The Latvian electricity transmission system is able to accept about 800 MW of additional new renewable energy source (RES) capacity, so there is a great potential for prosumers. The biggest obstacle for a household’s involvement in the energy market is the lack of support mechanisms and relatively high cost of RES technologies. The results show that with the current dynamics of new microgenerator connections, Latvia will achieve the set goals regarding the involvement of prosumers in the achievement of RES goals only in the next century. In order to attract the public to energy production, the concept of energy community needs to be defined in Latvian legislation, a balanced peer trading mechanism needs to be developed for various RES self-consumption groups willing to sell surplus electricity, and tax policy conditions need to be reviewed for electricity transactions outside the NET (payment system), in order to fully ensure the rights of prosumers.

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Section: Possibilities Of Res (Wind and Pv) Use For Energy Production...mentioning

confidence: 99%

Section: Possibilities Of Res (Wind and Pv) Use For Energy Production...mentioning

confidence: 99%

Analysis of Latvian Households’ Potential Participation in the Energy Market as Prosumers

Ļebedeva

Krumins²,

Tamane

et al. 2021

Clean Technol.

View full text Add to dashboard Cite

show abstract

“…Notably, the residential customers have some crucial factors that should be duly considered. Deferring household activities and appliances rescheduling sometimes affect dependent activities and should be practically and carefully managed when adopting beneficial technology in a smart grid to improve the grid's functionality 27 . To participate in DR programs, the users must reveal their willingness, preference, in-home activity data, and so forth, which may breach privacy 28 .…”

Section: Genesis Of the Demand Response Conceptmentioning

confidence: 99%

“…Frequency of usage of electricity will varied in dependence of age group. According to the table, respondents with middle age(27)(28)(29)(30)(31)(32)(33)(34)(35)(36) and(37)(38)(39)(40)(41)(42)(43)(44)(45)(46) frequently demand in additional electricity sources. However supplementary electricity is not at interest of 57 and above years old participants.…”

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confidence: 99%

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Development of the Electricity Demand Response Mechanism for Renewable Integration and Consumer Engagement in Latvia. Doctoral Thesis

Siliņeviča¹

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The key principle of electricity market design is the maximisation of public welfare. In the context of rational electricity consumption, social welfare is the sum of consumer surplus, supplier surplus and congestion rents in order to maximise the benefits to society. For decades, the importance of balancing supply and demand has been emphasised in discussions on the security of the electricity sector. It has been reasonably assumed that electricity demand is inelastic, mainly by studying supply potential. However, the current understanding of supply and demand in the electricity system needs to address the three main challenges of European energy policy: sustainability, security of supply and competitiveness, while guaranteeing fairness in energy distribution. The aim of the research is to develop a conceptual framework for the integration of renewable energy sources and consumer involvement, based on the technology of a Demand Response aggregator – an information and technology company – in the Latvian electricity sector. The Thesis consists of an introduction, four chapters, conclusions, recommendations and a bibliography. The introduction explains the actuality of the research topic, defines the aims and objectives of the research, its subject and object, puts forward the research hypothesis, and determines the scientific novelty and practical significance of the research. In the first and second chapters, a theoretical and methodological framework, economic and institutional foundations and peculiarities of Demand Response in the energy sector, electricity price factors, the new role of electricity end-users and the possibilities of optimising demand response are provided. In the third chapter, the author analyses the macroeconomic and physical indicator trends of the energy sector, the renewable energy sources and electricity system prices, calculates approximate dependence formulae and coefficients of determination; develops a methodology for a comprehensive analysis of correlation and regression dependence of physical and system price indicators of the electricity sector based on an appropriate adaptation of classical mathematical models, and contributes to the literature on the impact of the state aid on the electricity market. In the fourth chapter, the author has proposed and developed a new two-level technical model for optimisation of demand response services, which proposes to solve the problem of reducing electricity consumption in the first stage and, in the second stage, to solve the optimisation problem of which group of active consumers' loads to disconnect in case of electricity shortages, thus, to respond to electricity market prices. The main text of the Thesis is 155 pages. The bibliography contains 137 sources. Additionally, 48 tables, 31 figures and 2 annexes are included in the Thesis.

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Computational Fluid Dynamics Methods for Wind Resources Assessment

Cited by 2 publications

References 5 publications

Analysis of Latvian Households’ Potential Participation in the Energy Market as Prosumers

Analysis of Latvian Households’ Potential Participation in the Energy Market as Prosumers

Development of the Electricity Demand Response Mechanism for Renewable Integration and Consumer Engagement in Latvia. Doctoral Thesis

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