The Research Of Lightning Current On The Strike Distance Based On Leader Discharge Theory

At present most of the studies of building lightning strike from work, a lot of uplink pilot originating mechanism is a lack of theoretical basis and ignore the building itself size on the effects of lightning strike from. Therefore, this article mainly USES the charge simulation method and normal polarity uplink pilot starting physical model, docking lightning rod tip atmospheric electric field distortion situation and answer the lightning rod from lightning strike are studied. The main research results are as follows:(1) By using charge simulation method and docking lightning rod tip the study of atmospheric electric field distortion effect, Closer to pick up the lightning rod tip atmospheric electric field distortion effect is stronger, potential rate faster, more easy to trigger the uplink pilot.(2) By using normal polarity uplink pilot starting physical model, butt flashing lightning strike from research, it is concluded that the lightning strike and return current amplitude, the discrete relational expression between height of lightning rod. The normal polarity uplink pilot starting physical model fully considered when the downlink pilot close to the ground, the ground conductor uplink pilot from the surface of the guide discharge process, more in line with the uplink pilot production and the development of microcosmic physical mechanism.(3) By RBF neural network model to discrete the lightning strike from the continuity of regression analysis, after lightning rod from lightning strike expression has certain universality.(4) Through to the lightning strike from the probability density distribution on the surface of the enveloping surface area analysis study, from lightning strike in the 50 m to 150 m within the scope of the highest probability, and this article calculate the lightning strike from the formation of the three-dimensional envelope surface area than the calculation results by the IEC.