Hydropower facilities / Hydropower plants (HPP)

Kremenchuk HPP

Kremenchuk HPP is the third stage of the cascade on the Dnieper River and has been in operation since 1960. Facilities of the hydro scheme form the largest water reservoir in Ukraine with useful capacity of about 9 billion. m3 and protective structures.

Average flow regulation of the reservoir increased output of downstream HPPs by 700 million kWh.

Since 1996, the complex rehabilitation of the Dnieper cascade of HPPs has started.  The rehabilitation included reconstruction and replacement of hydropower, electrical, and auxiliary, mechanical and sanitary equipment of the HPPs. From 1997 till 2002 the first stage of rehabilitation was completed; and in 2006 the second stage of rehabilitation started.

The main goals of rehabilitation were to extend the operational period of the hydropower plants, to increase their capacities, output, reliability and safety, to fulfill the requirements of environmental protection, to improve the quality of electricity produced due to the improvement of control system, to create modern working conditions that meet current regulations.

During the 1st and the interim stages of rehabilitation the electrical and auxiliary equipment has been partially reconstructed. 12 hydro units and remaining out-dated equipment are being reconstructed at the 2nd stage.

Scope of work envisaged under the contracts:

  • rehabilitation feasibility study (Iand II Stage);
  • rehabilitation program elaboration for rehabilitation design of the HPP
  • rehabilitation design of the HPP;
  • approval of technical part of bid documents for equipment supply;
  • detailed design engineering on equipment renovation and hydro structures reconstruction;
  • co-ordination of design solutions on civil work and on technological equipment modernization;
  • design supervision over rehabilitation.

 

Main features of the project

 

Before rehabilitation

After rehabilitation

Installed capacity, MW

625

682,8

Unit type:

Kaplan

Number of units:

12

Max head, m

13,6

Mean annual output, mil. kWh

1495

1495

Discharge, m3/s

5700

Live storage, km3

8,97

Surface area of the reservoir at NWL (normal water level), km2

2252

Surface area of the reservoir at DWL (dead water level), km2:

1170

The hydro scheme consists of: power house, spillway, earth dams, bank protection of Taburyschenskiy cape; free flow dam; shipping lock.