Project title: mini Hydro Power Plant Dabrova Dolina 1, 225 kW
Investor: Kelemen energija d.o.o.
Location: Tržić Tounjski, Croatia
Construction completion: 2016

Project description

The hydro turbine as well as the associated hydro mechanical equipment is made in Germany, DIVE GmbH. The turbine is of submerged design together with the generator and is located in a turbine chamber. The flow through the turbine is maximum of 5,5 m³/s, net head at the site is 6.4 mVS. Electrical equipment (inverter, electrical cabinets and synchronization equipment) are located in a container next to the turbine. The location does not have the ability to connect to fixed or mobile phone, so a satellite connection is installed to ensure remote monitoring and control of the plant.

Enerkon participated in the project through following activities:

• Preliminary design
• Main design
• Detailed design
• Supervision of Mechanical works
• Chief Supervising Engineer

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Project title: Mini Hydro Power Plant Ilovac
Investor: Tekonet d.o.o.
Location: Ilovac (Ozalj)
Construction completion: 2012

Project description

As a technical solution, a dammed plant with a control building is planned, with the installation of three VLH turbines designed for very small net water head Manufacturer is MJ2 Technologies, from France, type 4000 (turbine type Kaplan), electrical power 3x0.403 MW=1.209 MW.
Three turbines, VHL 4000 turbo generators manufactured by MJ2 Technologies were selected, which are specially designed for the use of small heads and large flows.

The turbine tract and the rubber dam form a barrier and are in contact with water (Kupa river). The rubber dam control shaft is an underground facility with a system for filling and emptying the rubber dam according to the law of connected vessels and as such is in contact with water. Filling of the flexible dam takes place from a special reservoir in the rubber dam control shaft (chamber D). The water level in the tank is higher than the water level in the dam.

Basic technical parameters of one VHL 4000 turbine at maximum production:

• gross head: ΔH = 2,97 m
• net head: ΔH = 2,82 m
• installed flow: Q = 19 m³/s
• max. turbine power: 450 kW (at 100% open blades)
• power at the plant’s threshold: 403 kW (at 100% open blades)
• turbine rotor diameter: Ø 4000 mm
• installation angle: 45˚
• number of blades: 8

Enerkon participated in the project through following activities:

• Main design

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Project name: Small hydroelectric power plant (mHE) Pleternica on the river Orljava
Investor: City of Pleternica
Location: Pleternica, Croatia
Construction completion: 2011

Project description

To exploit the water potential of the river Orljava in Pleternica, a mini hydro power plant with a power of 220 kW was built on the site of the existing dam. The turbine is of the Kaplan TK 4-1.3 type. The flow through the turbine is 7.24 m³/s and ΔH =4.1 mVS. The power of the turbine is 220 kW. The generator is vertical, three-phased, synchronous 230 kVA. The produced electricity is placed in the network of HEP ODS for the purpose of public lighting in the city of Pleternica.

Enerkon participated in the project through following activities:

• Cost-benefit analysis
• Preliminary Design
• Main Design
• Detailed Design

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