Variance in multi-blade induced lightning overvoltages among different wind farm topologies
Fady Wadie, Ali Saeed Almuflih, Z. M. S. Elbarybary, Tamer Eliyan
TL;DR
This paper studies how different wind farm layouts affect lightning-induced overvoltages, finding that the star topology offers the best protection.
Contribution
The paper introduces a novel analysis of lightning overvoltage variance across wind farm topologies, focusing on multi-blade strikes.
Findings
Multi-blade lightning strikes increased overvoltages by 15% to 100% across all topologies.
The star topology reduced overvoltages by up to 89.04% compared to the radial topology.
Design engineers are recommended to use the star topology for better lightning protection.
Abstract
The impact of the topological formation of wind farms upon the lightning induced overvoltages injected into the grid was not covered earlier in literature. However, this topic is highly important to be investigated to allow the usage of the most reliable topology against lightning strikes. For such reason, the paper investigates this point with consideration of most damaging cases as lightning strikes to multi-blades. The testing used ATP software for four main topologies, radial, single-sided ring SSR, double sided ring and star topology. The features defining the similarities in response and the variance range between these topologies were recorded and analyzed. The multi-blade strikes gave an expected increase of 15% to 100% in the injected overvoltage to the grid for all topologies. The star topology showed the most reliable performance by allowing the least injected overvoltage to…
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Taxonomy
TopicsLightning and Electromagnetic Phenomena · Icing and De-icing Technologies · Electrical Fault Detection and Protection