The reduction of the accident rate in grids of 0.4 kV and above of Chuvashenergo branch of Rosseti Volga (brand of IDGC of Volga, PJSC) amounted to 18.9 percent in 2019 compared to 2018. Power energy specialists also reduced the time of restoration of power supply to consumers in case of technological disturbances. The average duration of the electric power supply interruption in the network of 6 kV and higher for 2019 compared to the same period of the last year reduced by 10 %.
It became possible to reduce the number of technological disturbances in the network thanks to detailed analysis, systematic work for the modernization of the power grid complex, introduction of new technologies, replacement of equipment, systematic approach to repair of power facilities, improvement of the skills of operational and repair personnel, etc.
The annual reduction of technological disturbances is also affected by the implementation of the program for maintenance and repair of the branch power equipment. So, over the past year, the specialists of the Chuvashenergo branch repaired 617 transformer substations of 6–10/0.4 kV, more than 3,400 km of overhead lines of 0.4–110 kV. Also, replacement of more than 6.5 thousand insulators, about 25 km of lightning wire was performed, and more than 1.5 thousand pieces of bird protection devices were installed on overhead lines.
In order to ensure the reliable energy supply to consumers, clearing of trees and shrubbery on over 700 hectares of forest corridors for power transmission line of various voltage levels was carried out.