The Need for an International Standard on Lightning Location Systems
نویسنده
چکیده
The lightning flash density Ng, so important in Lightning Protection standards for risk assessment calculations, should be replaced by the more suitable lightning strike-point density Nsg. A factor 2 is proposed to relate Ng to Nsg. More precise Ng values should occur from Lightning Location Systems (LLS), while improving their detection efficiency, location accuracy, and classification accuracy. A new IEC 62858 standard on LLS will be published soon, taking into account their performance characteristics. Keywords—lightning flash density, lightning strike-point density, lightning location systems, standards.
منابع مشابه
On the estimation of lightning peak currents from measured fields using lightning location systems
Although, due to the high variability of key parameters such as the return-stroke speed, it is impossible to determine the lightning current accurately from the remotely measured electric or magnetic field for a given event, we show in this paper that, for an assumed return-stroke model, the statistical estimation (e.g. in terms of mean values and standard deviations) is possible. We show addit...
متن کاملOne case of a lightning strike leads to death: case report
Background: Lightning is one of the most mysterious phenomena of nature that also, it has caused many financial and human losses. In tropical and sub-tropical countries, death due to thunderbolt is not unusual, and even tragic events may occur at high altitudes. Lightning physics is complex and not completely clear. Usually, the clouds are heavily pregnant and high voltages and amperages, they ...
متن کاملOur Blind Spots in the Fight Against Health Systems Corruption; Comment on “We Need to Talk About Corruption in Health Systems”
The health sector often appears prominent in surveys of perceived corruption, because citizens experience the symptoms of systemic corruption most distressingly during their interaction with frontline health workers. However, the underlying drivers of systemic corruption in society may be located in other social systems with the health system demonstrating the symptoms ...
متن کاملInferring the Correlation Between Lightning Events and Voltage Dips in Distribution Networks
To appropriately infer the correlation between lightning events and flashovers/voltage dips on real distribution networks, data coming from lightning location systems are certainly needed, but need to complemented on the one hand by data coming from distributed measurement systems able to record both protection manoeuvres and lightning-originated transients, and on the other hand by accurate ca...
متن کاملLightning Protection of Ehv Substations in Iran
Extra high voltage (EHV) substations are extremely vulnerable to the hazard of lightning strokes therefore, the shielding of these substations with a highly reliable protective scheme (shield wires) is an essential undertaking. In this paper an attempt is made to clarify the design procedure for shielding EHV substations against lightning with special reference to Iran.
متن کامل