For the increase of reliability of work of elektrosetevogo equipment, in «Kostromaenergo» the long-term stage-by-stage program of replacement of out-of-date equipment is developed on elektropodstanciyakh by tension 35-110 kv, expected on 2007-2012 years. In accordance with the program, in 2008 kostromskie power engineering specialists substituted out-of-date separators and korotkozamykateli by elegazovye switches. Eleven elegazovykh switches 110 kv firms «Siemens» it is set on substations «Central», «Kostroma-3», «Makar’ev-1»,
«Gusevo», «Chukhloma», «Nut». These measures will be instrumental in defence of equipment of PS in the cases of emergency situations in case of occurring of short circuits. On four substations – «Central», «North», «Buy-rayonnaya», «Shar’ya-rayonnaya» oily switches
transferable on 84 vacuum switch 10 kv productions of domestic firms from Zelenograda and Stavropol’ya. Application of this equipment except for a basic function – defence of disconnecting, considerably diminishes the risks of violations of ecological situation. On PS «Vostochnaya-1»
42 cells are mounted with vacuum switches.At the same time on substations the electromagnetic devices of relay defence and automation are transferable on a microprocessor with the reconstruction of buildings of closed raspredustroystv (ZRU) and obschepodstancionnykh points of management
(OPU). On seven substations the vehicles of management an operative current are set, providing autonomous work of elegazovykh switches.
