Estudio de nivel de riesgo por descargas eléctricas atmosféricas en el barrio El Brillante municipio de Villavicencio bajo el escenario del programa de normalización de redes eléctricas – PRONE

Abstract

The present monograph approaches the level of risk from lightning strikes in El Brillante, a subnormal neighbourhood in Villavicencio, It was chosen as a Electricity Grid Normalisation Programme (PRONE) beneficiary. Its purpose is to establish the level of risk from atmospheric electrical discharges in the project most critical area. For its development, a theoretical basis was provided on the calculation of the risk level from atmospheric electrical discharges as described in the Colombian Technical Regulations NTC 4552-2, as well as for the different types of electrical accidents based on the Technical Regulations for Electrical Installations (RETIE).

Using the standards mentioed before as a guide, the methodology was developed first by identifying the structure and the services to be protected, in this case, the house or property with the greatest extension and height. With the structure's identification to be evaluated, it was calculated the different risk components R1, R2, R4 and for the different events Ra, Rb, Rc, Rm, Ru, Rv, Rw and Rz, which were below the tolerable risk values. The value obtained for the risk level for loss of human life (R1) was 4,022*10^(-6), for loss of public services (R2) was 1,421*10^(-6) and finally for loss of economic value (R4) was 3.642*10^(-5), values lower than *10^(-5), *10^(-3) and *10^(-3) respectively, these being the maximum tolerable values according to NTC 4552-2.

Considering the above, a comparative analysis was made of the tolerable or reference values according to NTC 4552-2 with the values obtained for each type of risk, concluding that the risks identified are less than the tolerable value (Rx < RT), the structure does not require protection measures, i.e., it is protected for losses to the different events of atmospheric electrical discharges and does not require the implementation of corrective measures to mitigate this risk.