17 December 2021

The implementation of a large investment project is underway at the Novopolotsk CHPP – a 100 MW gas turbine power plant (GTPP) based on two Siemens SGT-800 turbines is being created here. It is one of four peak-standby energy source (PSES) under construction today for the unified power grid of the Republic of Belarus.

Being in the mode of continued readiness to launch, the new facility will maintain, if necessary, the balance of generation and consumption of electricity. The equipment of the GTPP is characterized by high maneuverability – it will take less than 15 minutes to responsively start it and fill the power deficit in the power grid.

Under a contract with Siemens Energy AB, the Russian Company ENERGAS, together with its Swiss partner Enerproject SA, is equipping the PSES with gas treatment and fuel supply equipment – a gas receiving station (GRS), booster compressor units (BCU) and an end system of filtration (SF). This equipment will ensure the design parameters of the fuel before its feeding into turbines of power generating units.



ENERGAS GRS is intended to preliminary purification and commercial metering of gas. The planned flow volume is 29,210 m3 / h. Two Enerproject BCUs will boost fuel pressure from 1 to 3 MPa before it is fed to the GTPP. The unit capacity of these block-modular units is 21,960 kg / h. The ENERGAS SF consisting of 4 high-efficiency filters will provide fine purification of gas fuel at the inlet to the SGT-800 shut-off valve block.

At present, the gas receiving station and filtration system have been shipped from production site and are being transported to the Novopolotsk CHPP. The equipment is supplied in maximum factory readiness (after preliminary workshop tests) what further significantly reduces the duration of the construction and mounting works and pre-start activities.



Three more Belarusian PSESs are being built at the sites of existing thermal power plants of the RUE Minskenergo, Brestenergo and Vitebskenergo. At the Minsk CHPP-5 there is being created GTPP with a capacity of 300 MW consisting of six SGT-800 turbines, at the Berezovskaya SDPP – GTPP-254MW (of five turbines), at the Lukomlskaya SDPP – GTPP-150MW (of three turbines).

New capacities are aimed at increasing the reliability and flexibility of the Belarusian power grid. Gas-turbine power units will be used as a reserve both for the existing infrastructure and for future wind, solar and nuclear power plants. The commissioning of PSESs will contribute to the decarbonization of the economy and the transition to a new energy structure in Belarus.

The assumed operating time of each peak power facility is approximately 700 hours per year and up to 350 starts from the cold state. The ENERGAS gas receiving stations will also operate here. Process units with a capacity from 43,753 to 87,506 m3 / h will be installed on supply pipelines for filtration, flow measurement and heating of entering fuel gas.

REFERENCE:

Novopolotsk CHPP is the branch of RUE Vitebskenergo. Its installed capacity is 270 MW. Annual electricity output amounts to 0.8-0.9 billion kWh, and issue of heat ranges from 2.8 to 3 million Gcal.

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