OREANDA-NEWS. August 19, 2009. The JSC "Grid Company", Naberezhnye Chelny electrical networks reconstruct the first turn of substation 110/6 kV "Sidorovka". The refurbishment of this feeding center, commissioned in 1973, has the significance for the Tatarstan power system, as SS " Sidorovka" is the base and system-making, the press-centre of Тatenergo reported.

Its reconstruction would allow create the reserve of the power and provide the loads of the fast building micro-districts "Zamelekesie" and "Red Chelny" in the south- western part of Naberezhnye Chelny as well as enhance the reliable electricity supply to such consumers as the bakery, meat producing plant, milk plant, river station, houses and social objects. The total investments to this object will constitute over 250 million rubles.

The solution on the necessity to reconstruct the SS 110/6 kV " Sidorovka" was taken in 2007 after the inspection by JSC " Grid Company" its technical condition. In 2008 the General designer PK "Electro, Ltd" (Naberezhnye Chelny) developed the project of substation refurbishment.

The works for SS "Sidorovka" upgrading began in March of 2009. The construction and mounting works does the General Contractor JSC "Srednevolzhskselelektrosetstroy". At the substation the outdoors switchgear 110 kV is built. The mounting of metal construction of the poles completed.

Construction and installation of the cable over-head road of the end-t-end type starts, designed for overlaying the 6 kV cables from the indoors switchgear to the new one. The erection of the two-storey premise of the indoors switchgear (ZRU) 6 kV combined with general substation control station (OPU) is completing. The constructors started the decoration works. Till December the specialists of the branch of JSC "Grid Company" Naberezhnye Grids and their contractors will do big works for electrical equipment installing.

In the course of reconstruction in place of the two power oil transformers of 32 МVА each will be installed 2х40 MVA with the accelerated cooling system (and the power will reach 63 МVА), and that would allow considerably increase the capacities of technological connections on the substation for the new consumers. The project stipulates the automatic protection against oil overheating and oil level reduction on the power transformers which is the excellent guarantor of environmental safety in case of emergency and enhances the fire safety. The transformers will be furnished with modern inputs with hard insulation and commutating devices RPN. The power transformer will be protected from the thunderstorms and commuting over - voltageи of production of JSC "NII Protecting devices and insulators" (St. Petersburg).

Together with the power transformers of domestic production (Toliyatti) at the substation will be mounted the modern high-technology power equipment. On the territory of the newly erected outdoors switchgear (ORU) of 110 kV will be installed the SF6 dead tank circuit breakers VEB -110 produced by JSC "Uralelektrotyazhmash", linear circuit breakers SGF-123 produced by JSC "ABB UTEM" with improved kinematics and contact scheme. At the indoors switchgear of substation, one of the first in Tatarstan will be installed the innovation of "Eltehnika –Volga, Ltd" – the set-up switchgear KRU "Volga".

In the course of upgrading the newly installed facilities will be provided with the up-to-date microprocessor protection relays and automatics. For example, the power transformers will be furnished with the microprocessor protection produced by NPP "Ekra" (Cheboksary), which enhances the operation of the feeding center. The reconstruction will in no way impact the operation of the feeding center: each consumer fed from SS " Sidorovka" receive the electricity in full amount on the permanent basis.

The completion of works at the substation has been planned for December 2009.