RENEWABLE ENERGY - Risk · PDF fileThe Main Activities of REL renewable energy: Project development, Design, Construction, ... Monolithic reinforced concrete structure. Used materials

RENEWABLE ENERGY

May 15, 2013

Reliability, Safety and Management Engineering and Software Development Services

Main Activities

May 15, 2013

The Main Activities of REL renewable energy:

Project development, Design, Construction, Supervision, Project management :

Hydro energy

Wind energy

Solar energy and energy efficiency

″Kozloduy″ Hydro Power Plant

→ Bypass Canal

North-Western Bulgaria – on the NPP Kozloduy Site, on the End of the 7 km long warm-water discharge canal

Designed by Risk Engineering Ltd. Hydraulic Equipment from MAVEL: Turbines and Generators

Power House

″Kozloduy″ Hydro Power Plant (2)

Vertical Section Through the Power House

Design


Design (2)

Horizontal Section Through the Power House


Basic Data of HPP

Technology

Number of Units 2

Turbine Type Kaplan

Runner Diameter 2500 mm

Number of Runner Blades 4

Nominal Net Head 7,50 m

Nominal Discharge 1 Turbine 46,2 m3/s

Rated Power per Unit 2867 kW

Turbine Rotations 183 min-1

Generator Rotations 750 min-1

Installed Output per Generator 3600 kVA

Generator Voltage 20 kV


Building Site of HPP



“Studen Kladenets” HPP is the second power stage of Arda Cascade. The plant has been in operation since 1958. During the period of 2006 – 2009 Risk Engineering carried out extension of the HPP by two new turbine installation.

″Studen Kladenets” Hydro Power Plant

Турбина 16 MW

Екологична турбина 1,3 МW

HPP “Studen Kladenets” – new turbine layout

″Studen Kladenets” HPP (2)

A new penstock with length of 210,35m and diameter of 2800 mm placed in a tunnel is feeding the additional two units.


Main dimensions of the extension Length 20,96 m Width 25,25 m Foundation elevation - 18,30 Crest elevation +21,85 Monolithic reinforced concrete structure. Used materials : 480 t steel, 8200 m3 concrete 10000 m2 formwork

Unit 5 - cross section


Foundation rock is eroded andesite

Excavation was carried out by blast

Underground section of the building – 7900 m3


External walls up to elevation +6,00 are reinforced concrete walls with thickness of 50 cm and were poured at once.

Reinforced concrete columns were poured at once up to elevation +11,63 as well.

Overground section of the building – 7500 m3


Roof formwork


Steel penstock was concreted by using of self compacting concrete mixture. Drill injection works were performed - contact and consolidation injection. Within the rehabilitation of HPP

“Studen Kladenets” REL performed delivery, replacement and adjustment of 5 inlet valves.


Turbine Francis on vertical axis with rated capacity of 16 MW delivered

by VA TECH HYDRO

Ecological hydraulic unit type Francis with rated power of 1,3 MW, installed by Risk Engineering


HPP “Studen Kladenets” after extension


North-Eastern Bulgaria – the Dobrudzha Plane, on Arable Land, between the village of Ovcharovo and the village of Svoboda

Total covered area – 7800 ha

Geological Site Assessment

performed

Existing 110 kV Power Line Stretching through the Area

Location

″Ovcharovo-Svoboda″ Wind Farm

Wind Data

Two 60m High Wind Measuring Masts:

• Wind Speed • Wind Direction • Air Temperature • Relative Humidity • Barometric Pressure

Data available for about two years already.

″Ovcharovo-Svoboda″ Wind Farm (2)

Wind Park Model

Variant with 44 Vestas V112-3MW Wind Turbines, Hub Height 119m

Installed Capacity of the Park: 44x3 MW = 132 MW

Using two different software by Modeling the Wind Park: Windographer, WAsP

Terrain Map of the Wind Farm and Wind Frequency Rose


Results: - Wake Losses in the Wind Park and of Each Wind Turbine - Mean Net Annual Energy Production (net AEP) for the Wind Park - Other Characteristics

Wind Park Model (2)


Resource Grid, gross AEP, over the Site from Ovcharovo-Svoboda Wind Farm for VESTAS V112-3MW Wind Turbine with Hub Height 119 m

Wind Park Model (3)


Erection of the Wind Park: for Two Years – Two Building Seasons Grid Connection:

• Building a New Substation 20/110 kV in Proximity to the Existing 110kV Power Line

• General Written Agreement with the National Electric Company for the Connection of the Wind Farm to the National Grid Available

Feasibility Study Performed

Realization of the Project


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Accumulated Discounted net Cash flow

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Feasibility Study


Capital City of Bulgaria – Sofia, on the Roof of REL office

Office Building of Risk Engineering in Sofia

Photovoltaic Installation on the Roof

Photovoltaic Installation

Designed by Risk Engineering Ltd. Equipment from “ER Soll”, Germany:

- 198 Modules with Total Area 489 m2 and Total Weight 63 kg/m2

- Polycrystalline Silicon Cells, Each with Rated Power 3,65 Wp

Biggest Installations of Such Type in the

South-eastern Part of Europe

Total Installed Capacity – 54,8 kWp

PV Modules Assembly

Photovoltaic Installation (2)

Automatically Saved of the Data on Sunny Portal:

http://www.sunnyportal.com

Daily Reports

Energy Production


Monthly Reports

Energy Production (2)


PV Installation


11 Photovoltaic Inverters

PV Installation (2)


Capacity: 2.5 MW

Location: Parvomay, Plovdiv

Technical Details: • 290W monocrystalline panels: 8 680 pcs • 3-phase string inverters (max 13.8kW):

155 pcs • Grid connection at 20kV

Commissioned in 2011

Debar PV Plant

Capacity: 5 MW

Location: Elhovo, Yambol

Technical Details: • 280W monocrystalline panels: 18 144pcs • 3-phase string inverters (max 30kW):



Elhovo 5 PV Plant

Capacity: 4 MW

Location: Elhovo, Yambol

Technical Details: • 260W polycrystalline panels: 15 228pcs • 3-phase string inverters (max 30kW):



Elhovo 4 PV Plant

Documents

RENEWABLE ENERGY - Risk · PDF fileThe Main Activities of REL renewable energy: Project development, Design, Construction, ... Monolithic reinforced concrete structure. Used materials