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- Title
Analyse von Umweltauswirkungen infolge eingeerdeter Hoch‐ und Höchstspannungskabel unter natürlichen Bedingungen.
- Authors
Rizvi, Zarghaam H.; Beck‐Broichsitter, Steffen; Wuttke, Frank
- Abstract
Analysis of environmental impacts of grounded high‐ and extra‐high voltage cables under natural conditions The green offshore wind power is primarily generated decentral in the north of Germany and, in order to ensure a secure power supply, the green power must be transported to the other parts of the country. In terms of electricity transmission, the 525 kV direct‐current underground cable projects SuedOstLink and SuedLink are worth mentioning. Coupled thermal‐hydraulic models are effective planning tools for the technical planning and environmentally compatible design of high‐voltage direct current (HVDC) underground cable routes. Associated with this is the evaluation of the effects of the operational heat emissions on the protected goods soil, water, flora and fauna as well as the agricultural concerns. The solution of the time‐dependent and nonlinear heat‐, density‐, pore‐space‐ and water content‐dependent differential equations associated with a model requires special numerical solution approaches and processes to obtain an appropriate spatial and temporal resolution. For the correct calculation of the heat and hydraulic mass transport in the soil, besides the soil heat, the coupled water and water vapor transport, the atmospheric boundary conditions, the vegetation‐dependent evaporation parameters, and the heat emission emanating from the HVDC underground cable must be considered. In addition to the simulation, an analysis of the sensitivity of the model parameters and model boundary conditions has to be considered in order to obtain realistic model results. In this paper, the process flows of a thermal‐hydraulic model are presented coherently using a synthetic example of a 525 kV direct current underground cable project.
- Subjects
GERMANY; WATER vapor transport; ENVIRONMENTAL impact analysis; ELECTRIC power transmission; POWER resources; WIND power
- Publication
Bautechnik, 2023, Vol 100, Issue 12, p761
- ISSN
0932-8351
- Publication type
Article
- DOI
10.1002/bate.202200096