Adopt overvoltage protector the effect of the lightning overvoltage protection distribution circuit generally there are two aspects: one is the direct lightning protection, through the lightning discharge energy absorption, achieve the purpose of protection; Second, after the installation of lightning arrester can limit distribution circuit induced over-voltage. Over-voltage protector can be greatly reduced near lightning flashover rates caused by induction voltage.
In recent years, research has shown that although the over-voltage protector of distribution line installation is increasing every year, but did not reduce distribution line lightning accident, it has a tendency to increase. Analysis shows that this is mainly due to not install over-voltage protector in across all tower, generally is a fundamental tower insulation installed a set of over-voltage protector. And lightning accident main without installing overvoltage protector tower.
West glendale experts believe that if you want to completely eliminate the distribution line lightning accident, must be installed each tower the every phase of over-voltage protector. Experts referred to in power distribution lines lightning incident includes direct lightning and thunder and lightning induced overvoltage accident. Only in each column over-voltage protector installed on each phase can get good protection effect.
The installation of over-voltage protector the relationship between the line U1 induced over-voltage and density of the curve. Calculation results show that the density of over-voltage protector increase, reduce the induced over-voltage. But from the constitute the whole a complete good protection of circuit's perspective, or in the each rails from over-voltage protector installed a set of lines way better.