The outgoing year 2021 has become a landmark stage in the production activities of Bashkir power engineers, which is marked by the successful passage of several anniversary milestones.

BASHKIR POWER GRID IS 90 YEARS OLD

On September 20, 1931, the ceremonial start-up of the Ufa Central Power Plant – the first steam-turbine power plant, later renamed SPP-1, took place, and an alternating current with a voltage of 22 kV was given through the first power transmission line over 10 kilometers long. This date is the birthday of the Bashkir power grid.

In subsequent years, the Bashkir power grid continued its development. In 1936, the Ishimbay CPP was put into operation, in 1938 - the Ufa CHPP-1 and power lines from them. In 1940, the Ufa Power Combine was formed, which consisted of one power plant - the Ufa SPP No. 1, as well as the City Electric Networks and Energosbyt. This year is considered the year of the creation of the Ufa city electric networks and Bashenergosbyt.

During the war years, Bashkirenergo employees made a significant contribution to the approach of Victory Day. During the war years 172 enterprises and about 247 thousand people were evacuated to Bashkiria to provide the front with weapons, fuel, uniforms, food, which required electricity. Compared with the pre-war 1940, the gross industrial output of Bashkiria has tripled. And, accordingly, the volume of electricity consumption has multiplied. Power engineers had to urgently increase production volumes in difficult conditions.

In 1941, the capacity of the Ufa CHPP-1 was increased to 22 MW, in 1942 it increased by another 12 MW. In May 1942, the second unit of the Ufa CHPP-2 with a capacity of 12 MW was commissioned. The capacity of the Ishimbay CPP was brought up to 17 MW. At the same time, power lines and step-down substations were being built. In Ufa alone, 45 transformer substations were built, about 40 kilometers of high-voltage transmission lines. The length of all power transmission lines in the republic was over 700 kilometers.

In the postwar years, the energy potential of the republic was significantly expanded. In the 50s, the Ufa CHPP-3, Salavat CHPP, Ufa CHPP-4, Kumertau and Sterlitamak CHPPs, Pavlovsk HPP were put into operation. During this period, the power grid construction was greatly developed. By the end of the 50s, all power plants of the republic were interconnected by 110 kV lines into a single Bashkir power grid, the railway from Chelyabinsk to Pokhvistnevo in the Samara Region was transferred to electric traction. Since 1958, all payments for electricity with consumers began to be carried out through Energosbyt, which was part of Bashkirenergo. The power grid of the republic has come to the second place in the USSR in terms of heat supply.

In 1963, by the decision of the Council of Ministers of the USSR and the USSR Ministry of Energy, the electrification of agricultural consumers and rural settlements was entrusted to the power grids. Electric networks of 0.4-10 kV, small power plants from SelEnergo were taken into the structure of the Bashkir power grid. An extensive program of rural electrification has begun. In 1964, 8 enterprises for servicing electrical networks were organized throughout the republic. With the commissioning of the Beketovo-500 kV substation in 1966, the power grid of Bashkortostan got access to the Ural and European power grids of the USSR. The last, the 54th administrative region of Bashkortostan (Burzyansky), was connected to the power grid in 1976.

The growth of production and the requirements for the reliability of heat supply led to the need for the construction of second power plants in Sterlitamak and Salavat: New-Sterlitamak and New-Salavat CHPPs. Together with the Bashkir Biochemical Combine in 1976, the BBC CHPP was put into operation. The largest Karmanovskaya SDPP with a capacity of 1.8 million kilowatts was commissioned in the north of the republic.

Thus, by the beginning of the 90s, one of the largest power grids in the country was formed, capable of producing and distributing 35 billion kilowatt-hours of electricity and over 60 million gigacalories of heat annually. It has formed more than 40 large and medium-sized enterprises with a total number of employees of about 30 thousand people.

In 1992, the Bashkir power grid was corporatized with the creation of the open joint stock company Bashkirenergo. On November 7, 2012, the reorganization of Bashkirenergo OJSC was completed, as a result of which the main assets of the company were transferred under the management of JSFC Sistema and PJSC Inter RAO – LLC Bashkir Generation Company (BGC), JSC Bashkir Electric Grid Company (BESK) and OOO Bashelektrosbyt (ESKB).

BASHKIR GENERATION COMPANY IS 15 YEARS OLD

July 28 marks the 15th anniversary of the Bashkir Generation Company, established in 2006 as part of the reform of the Russian electric power industry to manage capacities in the Republic of Bashkortostan. Since 2012, BGC LLC has been part of the diversified holding Inter RAO.

BGC today is one is of the largest local energy companies of Russia, consolidating 20 power plants: one SDPP, eleven CHPPs and TPPs, two large HPPs as well as facilities of small generation (5 small and micro HPP, 1 wind farm). Almost all equipment types of modern energy successfully operate here: gas and steam turbines, cogeneration and combined-cycle units, gas-reciprocating, hydro and wind power units.

The installed electrical capacity of BGC facilities is 4,461 MW, which is about 80% of the electricity generated in Bashkortostan. Thermal capacity - 8,758 Gcal / h - meets the needs of residents and industrial enterprises of six cities in the republic.

Annually, the generating enterprises of BGC in total produce about 19 billion kilowatt-hours of electric and 16 million gigacalories of thermal energy.

10 YEARS OF OPERATION CONFIRMED THE EFFICIENCY OF THE FIRST CCGT IN THE POWER GRID OF BASHKORTOSTAN

On August 29, 2011, a new power generation unit was commissioned at the site of Ufa CHPP-2 (a branch of Bashkir Generation Company LLC) – the first combined-cycle plant in the power grid of Bashkortostan. This CCGT-60 replaced the medium-pressure unit that had worked out its resource, and the obsolete steam-power equipment was dismantled.

Investments in the reconstruction and enlargement of CHPP-2 came to more than 1.5 billion rubles. The implementation of the project significantly improved the technical, economic and environmental characteristics of the power plant:

- Electric and thermal capacity has increased;
- Efficiency factor has raised;
- Specific fuel consumption has decreased;
- Emissions of nitrogen oxides and carbon monoxide into the atmosphere have been reduced.

Overall, the upgrade of Ufa CHPP-2 with the construction of CCGT-60 increased the power plant's profitability, minimized the negative impact on the environment, increased the volume and reliability of energy production, optimized electricity and heat supply to the housing complex and industrial enterprises of the city.

Combined-cycle power unit is equipped with equipment with high technical indicators. The main electricity generation is carried out by a gas turbine unit (GTU) with a rated capacity of 47 MW, made on the basis of the SGT-800 turbine (Siemens) and the AMS 1250A LF generator (ABB).

The SGT-800 industrial turbine combines robust design, high efficiency and low emissions, as well as has high exhaust energy, that allows it to be effectively applied in the combined cycles.

The new turbine was synchronized with the network on July 4th, 2011, and this day, in the tradition of Siemens, became its birthday. Newborns are given a name, and the Ufa SGT-800 is no exception. The proper name of this turbine - Solbritt - appears in official reports from the moment of the presentation (at the start-up ceremony of the CCGT) of a memorial plaque and a certificate of the turbine's birth to the management of CHPP-2.

GTU is conjugated with an EMA-006-KU waste-heat boiler of two pressures manufactured by EMAlliance. The two-circuit WHB produces high-potential process steam using the heat of the turbine exhaust gases. Low-pressure steam is headed to the CHPP's own needs, while superheated high-pressure steam enters the Siemens SST-300 turbo unit.

The SST-300 back pressure steam turbine was put into operation in 2015 during the 2nd stage of the power plant reconstruction and replaced the obsolete Siemens P-12-29-1.2 unit. This equipment with a capacity of 13 MW provides secondary electricity generation.

Therefore, the technologies used in the combined-cycle plant ensure combined energy generation, high gas fuel efficiency and overall facility efficiency. Today, the capacity of the CCGT is 60 MW.

Power unit also comprises ENERGAS booster compressor station. BCS guarantees fuel gas treatment and supply to the SGT-800 turbine with the set parameters for pressure (3 MPa), temperature (+60°C) and flow rate (17,000 m3 / h).

BCS is placed in a separate weatherproof shelter with maximum integration of all the subassemblies and components on a single frame and is equipped with life support and safety systems. The compressor station is equipped with automated control and monitoring system with the function of transmitting data to APCS of upper level, as well as with two-level capacity control system.

The process unit is based on a screw oil-filled compressor using a multi-stage gas filtration system, thanks to which the fuel at the outlet meets the highest requirements on purity. The BCS is equipped with a system to maintain the project gas temperature; it occupies a minimal area due to compact block-modular design.

The Ufa CHPP-2 is the second largest by capacity power plant of Bashkir Generation Company (after Karmanovskaya SDPP) and at the same time it is the most powerful among the its CHPPs. Currently, installed electric capacity of CHPP-2 is 519 MW, thermal capacity is 1,528 Gcal / h. The power plant provides energy for about half of the housing stock of Ufa and the nearby industrial enterprises.

GTPP SIBAI – 10 YEARS OF ENERGY GENERATING FOR BASHKIR TRANS-URALS

The 10th anniversary was celebrated by the first gas turbine power plant in the Bashkir Trans-Urals – GTPP Sibay. Cogeneration power unit GTPP-16PA was commissioned in April 2011 within frame of Zauralskaya CHPP enlargement project (Sibai city, Republic of Bashkortostan). New capacities amounted to 16 MW for electricity and 95.54 Gcal / h for heat.

Power plant GTPP-16PA was devised by JSC UEC-Aviadvigatel (Perm) and manufactured by UEC-Perm Motors enterprise. The design is based on the GTE-16PA gas turbine unit with the PS-90EU-16A drive made based on the gas generator of the high-performance PS-90A2 aircraft engine.

The main difference between the PS-90EU-16A and the industrial engines previously created by the Perm design bureau is the use of a free four-stage power turbine with a nominal speed of 3000 rpm. When using this design, the turbogenerator is driven directly without using a reducer. This reduces operating costs and generally increases the reliability of the power plant.

For issuance of the thermal power, hot-water type waste-heat boiler is installed here, conjugated with GTU. It heats the water using the high temperature of the turbine exhaust gases. The boiler produced by the Belgorod plant Energomash is made with the envisaged bypassing of the exhaust, which allows it to be taken out of operation without shutting down the gas turbine engine.

As a result, the cogeneration cycle provides combined energy generation, high fuel effectiveness (at least 85%), environmental friendliness and efficiency of the facility. As the main fuel for power unit there is used natural gas (reserve fuel is severin).

Feeding of fuel gas with the design parameters on purity, temperature, pressure and flow rate to the turbine is provided by the ENERGAS booster compressor unit. The packaged unit in a container version is equipped with necessary life support and safety systems. The unit with a capacity of 6,000 m3 / h operates in an automatic mode; monitoring and control are carried out from the central panel of the GTPP.

Zauralskaya CHPP is the easternmost branch of the Bashkir Generation Company (BGC). Power plant is the main source of electricity for the Bashkir Trans-Urals and heat for Sibai. The total electric capacity of the CHPP and its separate subdivision GTPP Sibai is 33.44 MW; the heat capacity is 124 Gcal / h.

Today, generating, grid and sales enterprises of the Bashkir power grid are actively developing and in many areas occupy leading positions in the electric power industry of Russia.

Among the priority competencies of the ENERGAS Group are production, comprehensive commissioning and maintenance of gas treatment and compression units for generating facilities in the electric power industry, oil and gas complex and industrial enterprises.

Today, the ENERGAS units provide high-quality fuel for more than 200 gas turbines and gas-reciprocating units with a total capacity of over 6.6 GW. In particular, ENERGAS supplied process equipment for significant facilities of Bashkir power grid, including:

- GTPP-25P at Ufa CHPP-1, the first in the Russia gas turbine power plant created on basis of aircraft engine;
- CCGT-60 at Ufa CHPP-2, the first combined-cycle plant in the power grid of Bashkortostan;
- GTPP-16PA at Zauralskaya CHPP, the largest source of energy for the Bashkir Trans-Urals.

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