Airships are necessarily exposed to the atmospheric electrical environment, which includes electric fields, electrostatic charges, and lightning. Protection from hazards presented by these environments is necessary. One of the main issues is protection of the envelope, which is usually filled with helium. Helium poses special problems in this regard, even though it is an inert gas, because elec...

In case of direct lightning strike to a building dangerous sparking may occur between the external lightning protection system and conductive installations inside the building. To avoid such side flashes a minimum separation distance between conductive parts inside the building and the air termination or down conductor system is required. The standard IEC 62305-3 provides formulae to determine ...

Traditional lightning protection practices were standardized many years prior to the recent proliferation of modern electrical and electronic equipment installations on building rooftops. This paper presents an isolated down-conductor solution that combines the advantages of the IEC 623051 series or various other national standards regarding isolated and non-isolated lightning protection method...

Thunderstorms are spectacular but hazardous weather phenomena which, together with tropical cyclones and bushfires, top the list of concerns in the Bureau of Meteorology’s Severe Weather Warning Services Program. Insurance-related claims arising from thunderstorms (wind, hail and flash flood damage) from 1967 to 1999 amount to about $A5 billion (Insurance Council of Australia 2000). The Sydney ...

This paper is concerned with lightning surge propagation on wind turbines. As wind power generation undergoes rapid growth, lightning incidents involving wind turbines have come to be regarded as a serious problem. Nevertheless, no known studies exist yet in Portugal regarding lightning protection of wind turbines. In this paper we present an overview of Electro-Magnetic Transients Program (EMT...

This paper is concerned with lightning surge propagation on wind turbines. As wind power generation undergoes rapid growth, lightning incidents involving wind turbines have come to be regarded as a serious problem. Nevertheless, no known studies exist yet in Portugal regarding lightning protection of wind turbines. Hence, we present a case study, based on a wind turbine with an interconnecting ...

This paper elaborates on several important outstanding issues in the state-of-art of overvoltage protection selection for modern wind farms. The lack of experience with this still-new technology, together with the inherent complexity of wind farm electrical systems, entails several unresolved issues pertinent to the topic of overvoltage protection, particularly in relation to lightning-initiate...