Asset Management Data

The key data of the Transmission System Equipment are set out below, as they stood on 31/12/2023.

 

Installed Transmission Line Lengths (routing length):

TRANSMISSION LINES (km)

TYPE OF LINES

400 kV

DC 400 kV

150 kV

66 kV

TOTAL

OVERHEAD LINES

3.033,44

106,95

8.875,56

37,49

12.053,44

SUBMARINE CABLES

6,6

 

1.066,29

79,2

1.145,09

SUBMARINE CABLES (underground part)

13,4

 

34,43

2,8

50,63

UNDERGROUND LINES

31,45

 

390,03

 

421,48

TOTAL

3.084,89

106,95

10.366,31

112,49

13.670,64

 

Transformer and Switching Substations which contain IPTO assets:

SUBSTATIONS WITH IPTO ASSETS

TYPE

TRANSFORMER

SWITCHING

TOTAL SUBSTATION

HVC - SWITCHING (400KV)

19

3

22

STEP-DOWN - SWITCHING SUBSTATION (150/20KV & 66/20KV)

219

4

223

SUBSTATION OF HV CUSTOMERS - MINES

40

 

40

STEP-UP (PRODUCTION STATIONS)

31

1

32

STEP-UP RES PRODUCERS

94

 

94

AC/DC TRANSFORMATION

1

 

1

TOTAL

 

 

412

 

Transformers and Transforming capacity - IPTO Fixed assets:

TRANSFORMERS

TRANSFORMER TYPE

VOLTAGE (kV)

NUMBER OF TRANSFORMERS

MVA CAPACITY

AUTOTRANSFORMERS

400/150/30

65

17.810

AUTOTRANSFORMERS

150/66

1

50

CONVERTER STATION TRANSFORMER

400

1

597

STEP-DOWN TRANSFORMER

150/66

2

50

SVC TRANSFORMER

150/20

3

218

TOTAL   72 18.725

 

Transformers of Users Connected with the Transmission System:

TRANSFORMERS

TYPE

VOLTAGE (kV)

NUMBER OF TRANSFORMERS

MVA CAPACITY

USER

STEP-UP

(CONVENTIONAL PRODUCTION AND HYDROELECTRIC STATIONS)

400

21

8.206

PRODUCERS

150

76

6.555,31

STEP-UP RES PRODUCER

400 2

300

150

133

8.048,4

20

2

7

TOTAL   234 23.117  

STEP-DOWN

150/20

457

19.242

HEDNO

66/20

2

50

STEP-DOWN

150/20

5

212

PRODUCERS

STEP-DOWN AUXILIARY

150

22

1.090,5

STEP-DOWN

150/20

11

550

PPC / MINES

STEP-DOWN

150/MT

92

2.652,1

HV CUSTOMERS

TOTAL   589 23.797  
GENERAL TOTAL   823 46.913