Cloud to ground lightning causes damage to objects and injures people by different mechanisms like direct hit, contact voltage, side flash, step voltage etc. Understanding the different ways of involvement of objects and personnel in lightning disasters is helpful in deciding the type and level of external protection. Details of investigations conducted in 47 lightning disasters spread over sev...

500kV substation is especially important to the grid of our country, once it encounters lightning damage, the safety and reliability of the whole power system will be directly affected. As lightning intruding waves will cause overvoltage on electric equipments by intruding from the transmission line or straightly stroking the substation, which seriously influences the insulation level of equipm...

Several parameters of return-stroke current waveforms of triggered lightning are discussed and compared to results obtained in other places. The parameters presented in this paper, obtained for the first time in Brazil, are crucial in the lightning protection research. All these measurements were done with a sample rate of 100 ns, enabling us to study rise and decay times of the waveforms. Imag...

In general, there are three components making up a lightning protection system for wind turbines. These are the receptors, the down conductor and the grounding grid. Receptors and down conductors are usually found in the more recent wind turbine blades and where the down conductors are normally installed on the internal side of the blade. Consequently, the blades are vulnerable to damage and bu...

Lightning is one of the most serious disasters in the electrical power grid, especially in the ultra-high and extra-high voltage power systems. The measurement of the lightning current parameters is of great importance for the investigation of lightning protection. The literature shows given its significant advantages over equivalent current transducers, the Rogowski coil is an increasingly pop...

The irresistible trend toward distributed computing systems for the control of industrial power electronic equipment is adding new dimensions to the old problem o f surge protection. Harmful surges may be produced by lightning, power switching, or by differences i n ground potentials. The objective o f the paper is t o provide increased awareness and better understanding o f the fundamentals o ...

Airborne light detection and ranging (LIDAR) measurements derived before and after Hurricanes Katrina and Wilma (2005) were used to quantify the impact of hurricanes and lightning strikes on the mangrove forest at two sites in Everglades National Park (ENP). Analysis of LIDAR measurements covering 61 and 68 ha areas of mangrove forest at the Shark River and Broad River sites showed that the pro...