Ayen Energy

Yamula Dam and Hydroelectric Power Plant, located 30 km northwest of Kayseri, on the River Halys (Kizilirmak), is one of the most important Build-Operate-Transfer (BOT) type power and irrigation projects in Turkey.

The Yamula Dam is located on the river Halys (Kizilirmak) in Kayseri in the Central Anatolia region. The site, including irrigation areas, is located 25 km northeast of city of Kayseri within the vicinity of the village of Yemliha at 35º 06´ - 35 º 09´east longitudes and 38º 24´ - 39º 06´ north latitude. This project was executed by one of our subsidiaries, Kayseri Elektrik Uretim San. ve Tic. A.S..

HYDROLOGY

Precipitation Area

:

15 581.6 km²

Annual Average Natural Flow

:

2 135 x 10 m³

Annual Average Flow

:

1 956 x 106 m³

Average Flow

:

67.7 m³ / s

Maximum Flood

:

5500 m³ / s

:

Reservoir

Max. Water Level

:

1100.00 m

Min. Water Level

:

1070.00 m

Max. Water Level (under flood)

:

1102.50 m

Total Volume

:

3476.00 x 106 m³

Active Volume

:

2 025 x 106 m³

Dam Area (normal water level)

:

85.3 x 106 m³

Derivation Tunnels

Type

:

Concrete cover, circular

Number of Tunnels

:

2

Length

:

T1-630.44 m

2

:

T2-691.46 m

Diameter

:

6.5 m each

Power Plant

Length

:

52.00 m

Width

:

30.00 m

Number of Units

:

2

Unit Power

:

50MW

Total Installed Power

:

100 MW

Turbines

Type

:

Vertical axis, Francis

Number

:

2

Rpm

:

250

Max. Net Fall

:

105.53 m

Min. Net Fall

:

74.12 m

Net Design Fall

:

96.47

Output Power of Each Turbine

:

51 MW

Switchyard

Type

:

Open two main busses

Maximum system voltage

:

170 kV

Nominal voltage

:

154 kV

Number of feeders

:

5

Dam Body

Type

:

Partitioned, clay-kernel, rock fill

Crest Height

:

1,104.00 m

Crest Length

:

510.00 m

Thalweg Height

:

984.00 m

Max Height from Thalweg

:

120.00 m

Max Height from Base

:

130.00 m

:

Spillway

Location

:

Left Coast

Type

:

Gate controlled, overfall

Threshold Height

:

1,086.00 m

Max. Discharge Capacity

:

5,500 m3/sec

Gate Type

:

Radial

Number of Gates

:

4

:

Energy Tunnel

Type

:

Steel coated

Diameter

:

7.00 m

Length

:

215.00 m

Penstock

Diameter

:

7m, 5m, 2 x 3.1 m afterpant

Length

:

240 m

Type

:

Steel

Generator

Type

:

Vertical axis, Extending Pole, Synchronous

Number

:

2

Power

:

59 MVA

Output Voltage

:

11 kV

Frequency

:

50 Hz

Power Factor

:

0.85

Unit Transformers

Type

:

External, 3 – phase

Number

:

2

Voltage

:

11/154(+ / - 2x2.5%) kV

Frequency

:

50 Hz

Connection Group

:

Ynd 11

Reliable Power and Generation

Reliable Power

:

35 300 kW

Reliable Generation

:

309.228 x 106 kWh

Secondary Generation

:

114.332 x 106 kWh

Total annual generation

:

423.56 x 106 kWh