scholarly journals Harmonic Transfers for Quantifying Propagation of Harmonics in Wind Power Plants

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5798
Author(s):  
Daphne Schwanz ◽  
Math Bollen ◽  
Oscar Lennerhag ◽  
Anders Larsson

In this paper, primary and secondary emissions in wind power plants are studied by using transfer admittance and current transfer functions between turbines and the public grid. The use of such transfer functions allows harmonic propagation studies without knowledge of the emission from individual turbines or the background voltage distortion. The transfer functions are calculated for one synthetic and one existing wind power plant, and results are discussed. Primary emission, secondary emission from other turbines and secondary emission from the public grid are shown to be of the same order of magnitude. Furthermore, the paper addresses the impact of turbine converter modelling, public grid impedance and the change in the aggregation exponent with frequency on the propagation. All three are shown to have a significant impact and should be considered. The main challenge for future studies is in obtaining relevant models for turbine impedance versus frequency.

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1828 ◽  
Author(s):  
Izabela Piasecka ◽  
Patrycja Bałdowska-Witos ◽  
Józef Flizikowski ◽  
Katarzyna Piotrowska ◽  
Andrzej Tomporowski

Controlling the system—the environment of power plants is called such a transformation—their material, energy and information inputs in time, which will ensure that the purpose of the operation of this system or the state of the environment, is achieved. The transformations of systems and environmental inputs and their goals describe the different models, e.g., LCA model groups and methods. When converting wind kinetic energy into electricity, wind power plants emit literally no harmful substances into the environment. However, the production and postuse management stages of their components require large amounts of energy and materials. The biggest controlling problem during postuse management is wind power plant blades, followed by waste generated during their production. Therefore, this publication is aimed at carrying out an ecological, technical and energetical transformation analysis of selected postproduction waste of wind power plant blades based on the LCA models and methods. The research object of control was eight different types of postproduction waste (fiberglass mat, roving fabric, resin discs, distribution hoses, spiral hoses with resin, vacuum bag film, infusion materials residues, surplus mater), mainly made of polymer materials, making it difficult for postuse management and dangerous for the environment. Three groups of models and methods were used: Eco-indicator 99, IPCC and CED. The impact of analysis objects on human health, ecosystem quality and resources was controlled and assessed. Of all the tested waste, the life cycle of resin discs made of epoxy resin was characterized by the highest level of harmful technology impact on the environment and the highest energy consumption. Postuse control and management in the form of recycling would reduce the negative impact on the environment of the tested waste (in the perspective of their entire life cycle). Based on the results obtained, guidelines and models for the proecological postuse control of postproduction polymer waste of wind power plants blades were proposed.


2013 ◽  
Vol 846-847 ◽  
pp. 195-198
Author(s):  
Xiang Wen Zhang ◽  
Ran Chen ◽  
Chun Wang

The paper analyzes the current wind power plants monitoring system problems and the impact on the grid. Proposed structure for smart monitoring system of wind power plants based on IEC61400-25 and IEC61850.The system uses three level of station level and bay level and process level. System uses information modeling of object-oriented approach for wind power plants. Using maps to IEC61850-8-1 MMS protocol stack communication service mapping is proposed. Wind power plants monitoring system and substation monitoring system uses the integrated design.


Author(s):  
Jiří Schneider ◽  
Petr Mudra ◽  
Alice Kozumplíková

Public participation in decision‑making process is an important function of the process called Environmental Impact Assessment (EIA). The respect for the public right in the participation of environmental impact assessment and the right to information are generally controlled by non‑governmental organizations (NGOs) in cooperation with the Ministry of Environment. The support of public is provided in the cases in which queried entity tries not to give the requested information in the appropriate range. NGOs do not follow how the public is involved in the EIA process, and how the comments are relevant or incorporated and whether the final standpoint is influenced. This standpoint is not monitored by Czech Statistical Office. The article deals with the involvement of the general public in the EIA process of wind power plants in the Czech Republic. In selected regions (Moravskoslezský, Olomoucký, Ústecký and Jihomoravský), not only the quantity but also the relevance of the comments in relation to the outcome of the process are evaluated. The own typology groups of the public (individuals, petitions, self‑government etc.) and also applying comments (noise, nature protection, administrative mistakes etc.) were used for the evaluation. All intentions obtained concurring standpoints in the case of zero or low interest of the public.


2019 ◽  
Vol 9 (2) ◽  
pp. 231 ◽  
Author(s):  
Izabela Piasecka ◽  
Andrzej Tomporowski ◽  
Józef Flizikowski ◽  
Weronika Kruszelnicka ◽  
Robert Kasner ◽  
...  

This study deals with the problems connected with the benefits and costs of an offshore wind power plant in terms of ecology. Development prospects of offshore and land-based wind energy production are described. Selected aspects involved in the design, construction, and operation of offshore wind power plant construction and operation are presented. The aim of this study was to analyze and compare the environmental impact of offshore and land-based wind power plants. Life cycle assessment analysis of 2-MW offshore and land wind power plants was made with the use of Eco-indicator 99 modeling. The results were compared in four areas of impact in order to obtain values of indexes for nonergonomic (impact on/by operator), nonfunctional (of/on the product), nonecological (on/by living objects), and nonsozological impacts (on/by manmade objects), reflecting the extent of threat to human health, the environment, and natural resources. The processes involved in extraction of fossil fuels were found to produce harmful emissions which in turn lead to respiratory system diseases being, thus, extremely dangerous for the natural environment. For all the studied areas, the impact on the environment was found to be higher for land-based wind power plants than for an offshore wind farm.


2020 ◽  
Vol 15 (5) ◽  
pp. 2033-2043
Author(s):  
Omar Beltran Valle ◽  
Rafael Peña Gallardo ◽  
Juan Segundo Ramirez ◽  
David Wenzhong ◽  
Eduard Muljadi

Author(s):  
Oksana Dovgalyuk ◽  
Halyna Omelianenko ◽  
Roman Bondarenko ◽  
Ivan Yakovenko ◽  
Sherali Saidov ◽  
...  

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