Design and Construction of Overhead Transmission and Distribution Lines in Electric Power Construction

The following paper recounts the loss of supply and subsequent restoration of the Bay of Plenty Electric Power Board' s sub transmission and distribution systems following the advent of the Edgecumbe earthquake of 2 March 1987. The paper details the effects on the Board's customers and staff, restoration procedures, and matters relating to the restoration of supply and repair of the distribution system. The emphasis is more on the operational and organisational aspects of the event, rather than being a report of structural damage and remedial repairs. Technical aspects of this sort are dealt with in greater detail by other organisations.

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Simulación del blindaje a una línea de distribución contra descargas atmosféricas

Nova Scientia ◽

10.21640/ns.v6i11.68 ◽

2014 ◽

Vol 6 (11) ◽

pp. 93

Author(s):

B. Guevara Cortés ◽

J. López Bonilla ◽

S. Vidal Beltrán

Keyword(s):

Electric Power ◽

Distribution Lines

En el presente trabajo se realiza un estudio por medio de simulaciones acerca de las sobretensiones generadas por descargas atmosféricas inducidas sobre las líneas de distribución de 23 kV, para justificar la implementación del uso de cable de guarda como protección a las líneas de distribución, como lo sugiere la norma "Distribución, Construcción e Instalaciones Aéreas en Media y Baja Tensión de la CFE" y respaldarse con la norma americana IEEE STD 1410 “Guide for Improving the Lightning Performance of Electric Power Overhead Distribution Lines”, e implementar una nueva configuración empleando los postes originales con nuevas distancias dieléctricas.

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Dikes on permafrost foundations in northern Manitoba

Canadian Geotechnical Journal ◽

10.1139/t70-048 ◽

1970 ◽

Vol 7 (4) ◽

pp. 356-364 ◽

Cited By ~ 4

Author(s):

J. G. Macpherson ◽

G. H. Watson ◽

A. Koropatnick

Keyword(s):

Electric Power ◽

Heat Loss ◽

Free Water ◽

Northern Canada ◽

Discontinuous Permafrost ◽

Ice Content ◽

The Relationship ◽

Design And Construction

The development of hydro-electric power within the areas of low relief of northern Canada often requires long dikes to impound a reservoir. Much of this region lies within a zone of discontinuous permafrost, and dike design must allow for foundations varying from soft alluvial materials which will settle during or shortly after construction, to frozen strata with a high ice content which will settle as the ice thaws due to heat loss from the reservoir.This paper describes the approach to design and construction of dikes for the Kettle Generating Station in northern Manitoba, and includes a description of the instrumentation installed in an attempt to correlate the relationship between the rate of thawing of the permafrost and the rate of drainage of free water from the foundation.

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