Низкая эффективность «холостых» изоляторов, применяемых для защиты птиц на воздушных линиях электропередачи

Abstract

The results of a special research carried out in the arid zone in the territory of the Republic of Kalmykia (Russia) demonstrate the low efficiency of “blank” insulators installed earlier on 6–10 kV overhead power lines (OPLs) as bird protection devices (BPDs). The materials of inspection of territories with different types of 6–10 kV power lines, not equipped with “blank” insulators and any types of BPDs, were used for a comparative analysis. It was found that on average that 1.62 dead birds (of all species) are encountered per one kilometer of 6–10 kV power lines equipped with “blank” insulators. For territories of similar power lines not equipped with additional insulators, the average frequency of encounters is 1.77 dead birds per one km of power lines. Thus, the use of “blank” insulators shows insignificant reduction of bird hazard – on average by 8% compared to the control, and cannotbe characterized as a measure sufficient to ensure the safety of wildlife during the operation of overhead power lines. Research shows that there are numerous cases in which the installation of “blank” insulators and their subsequent operation leads to the opposite effect – bird hazard of 6–10 kV overhead power lines equipped in this way increases.