Signal transmission model for the substations grounding grid

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Xianghui H Xiao (Autor) Outra; Minfang F Peng (Autor) Outra; Jaime S Cardoso (Autor) FEUP; Lei Wang (Autor) Outra; Meie E Shen (Autor) Outra

Revista

Título: Expert Systems with Applications

Vol. 41 Nº 4

Páginas: 616-621

ISSN: 0957-4174

Editora: Elsevier

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 2 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

ID Authenticus: P-006-HVW

DOI: 10.1016/j.eswa.2013.07.086

Abstract (EN): The signal of the wireless sensor network in grounding grid, owing to energy loss, network congestion, path constraints and other factors, is easy to delay even partially losing. In order to ensure that the signal can be transmitted effectively in grounding grids for the substation, this paper presents a method based on traffic model of back-off balanced multiple sensor network cooperation model. As we all know, cognitive radio (CR) technology is adopted in multi-channel wireless networks to provide enough channels for data transmission. The MAC protocols should enable the secondary users to maintain the accurate channel state information to identify and utilize the leftover frequency spectrum in a way that constrains the level of interference to the primary users. We proposed a novel cooperation spectrum sensing scheme in which the secondary users adopt backoff-based sensing policy based on the traffic model of the primary users to maximum the throughput of the network. To obtain the full accurate information of the spectrum is a difficult task so that we propose the backoff sensing as a sub-optimal strategy. Since the secondary users sense only a subset of the channels in our proposed scheme, less time is spent to get the channel state information as more time is saved for the data transmission. And while dealing the signal data, I combine the intensity transfer method instead of the priority method. This can effectively reduce the network congestion, to ensure that the main information can be transfer well. It is also very useful to signal transmission for the Multi-sensor in Substations Grounding Grid (SGG).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6