Annual report 2010

19. Investments in the Distribution Grid SectorThe project was developed and implemented forsolving the issues of prospective development of110-220 kV electric grids and reliable electricpower supply to the region until 2015.The investment project implementation will allowensuring regulatory level of reliability and theexisting contractual obligations for electricitysupply to the customer (a branch of Volgograd -energo).The construction of 110 kV R-27 (Tsentralnaya)substation with 110 kV R-27 — Р-1 cable linewas finalized. The expansion of 110/35/6 kVR-1 substation with 110 kV 2х1.1 km cable line,the following equipment was installed: atsubstation R-27: transformers 2х40 MVA;five 110 kV SF6 circuit-breakers; 2х250 kVAauxiliary transformers; 42 vacuum circuit breakers;at 110 kV R-1 substation, one 110 kV SF6circuit-breaker.The goal behind the project implementationwas to ensure reliable energy supply to theprospective residential area and social infrastructureassets in the central part of Rostov-on-Don and to ensure more reliable and uninterruptibleenergy supply to the existing customers,including category I customers in an environmentof densely built residential area (a branchof Rostovenergo).The construction of start-up facility I of 110 kVKirov substation (Yubileinaya) with 110 kV (40.0MVA, 26.8 km) distribution line was commissioned.The necessity of the investment project implementationis connected with the lack of electriccapacity in the central districts of Astrakhan.Capacity requests submitted by customers can notbe satisfied due to technical impossibility.The project implementation as part of twostartu p facilities will allow reducing capacityshortage and give the possibility of connectingnew customers from the residential and utilitysector, small and medium businesses and relocatinga part of load from overloaded 110 kVSevernaya substation within up to 10 MW.Another effect will be a decrease in electricitylosses in low-voltage grids in connection withthe transition to the voltage rate of 10 kV (abranch Astrakhan energo).JSC IDGC of the NorthwestPhase II of the rehabilitation of 110 kVTsentralnaya substation (40 MVA) was put intooperation.The facility is located in the center of Vologdaand supplies electricity to the social infra -structure, residential buildings, production enterprises,including the traction substations oftrolleybus lines.The completion of the substation rehabilitationallowed ensuring reliable electric power supply tocustomers and satisfying the needs of the newlybuilturban infrastructure assets and housing(a branch of Vologdaenergo).June 2010 saw the finalization of rehabilitationof 110 kV Mikun — Yedva high-voltage line No.177 (the area between Vezhaika and Vozhskaya)(24.1 km).The goal behind the project implementation is toraise the reliability of electric power supply tocustomers in the Komi Republic (a branch ofKomienergo).The rehabilitation of 110 kV Voznesenie —Terentievskaya overhead distribution line (27 km)was finished.The implementation of this investment improvedthe reliability of electric power supply to the customersin Verkhnetoyemsky and VinogradovksyDistricts (a branch of Arkhenergo).JSC LenenergoAs part of rehabilitating 110 kV Pushkin —Yuzhnaya substation No. 185 in Saint Petersburg,T-1 transformer (80 MVA) was put into operation.The operations aimed at rehabilitating the substationwere included by the government of SaintPetersburg in the Program of Top-Priority Measu -res for Preventing Capacity Shortage and Raisingthe Reliability of Energy Supply in SaintPetersburg.The project implementation will ensure more reliableelectric power supply to the existing customersand will give the opportunity for connectingnew customers of Pushkinsky District in SaintPetersburg.183