Automation of CST Pump at Ladyzhynska TPP to Save Up to 50% of Power
DTEK ESCO has completed the energy-efficient project for automation of the condensate storage tank (CST)* pump at DTEK Ladyzhynska TPP. The installed frequency converter automatically controls the pump load and saves up to 50% of electric energy. The project has been implemented under the 5-year energy service contract. Before the project has been implemented, the pump had been being operated manually. At this time, the power consumption had been remaining constant. Now, thanks to the pressure switch and the 110 kW frequency converter the load is varied automatically. Such system allows the power plant to save 170,000 kWh, or 200,000 hryvnias, annually,” said Yevhen Bushma, Director of DTEK ESCO.
“The pump automation allows us to maintain the system parameters required for feeding the units with condensate. We don’t waste power to maintain excess pressure now. When the flow changes, the pump alters its power automatically requiring no attention from operative personnel. Prevention of pressure fluctuations and hydraulic shocks ensures reliable operation of equipment, and power consumption cut means cost-efficiency,” explained Dmytro Savoliuk, Head of the Equipment Adjustment and Testing Department of DTEK Ladyzhynska TPP.
“We have already been looking for ways to improve the CST pump operation for a while. After conduction of partial energy audit, the retrofitting was initiated by the Ladyzhynska TPP employees themselves, and the proposal of DTEK ESCO energy service company was accepted. The company has funded 90% of the entire project cost and has completed all the works within two weeks on the turnkey basis: the most feasible technical solution and equipment have been sought, and the system installation and commissioning have been secured. We instantly realized the saving potential benefits from which will be shared with our investor, ESCO,” said Oleksandr Bobryk, Director of DTEK Ladyzhynska TPP.
* CST pumps are involved in a crucial process: they feed condensers of turbines with condensate during TPP power units operation, thus maintaining the required fluid level in them and returning lost condensate to the units’ process flow. The entire plant’s operation security depends directly on its CST pumps.