Trends of technological disturbances
|Indicators||2011||2012||2013||2014||2015||Variance in 2015/2014,%|
|Per unit accident rate||6.79||11.43||13.05||9.82||6.77||–31.0|
|Electricity undersupply, thousand kWh||2,344.8||2,456.9||6,337.6||5,249.18||3,240.38||–38.3|
|Electricity interruption, hours||11,977.3||104,666.9||76,534.4||27,894.03||26,229.13||–6.0|
|Financial damage, RUB thousand||48,313.2||46,679.0||70,367.2||67,514.24||59,071.89||–12.5|
Based on the analysis of technological disturbances in 6kV or higher voltage grids of PJSC IDGC of the North-West in the reporting period, overall improvement of reliability was observed in 2015 as compared to 2014.
Most technological disturbances in 2015 were caused by exposure to recurring disasters (47%), trees falling on HVLs (23%) and worn-out (broken) insulation (14%).