Asset Management Data

The key data of the Transmission System Equipment are set out below, as they stood on 31/12/2020.

 

Installed Transmission Line Lengths (routing length):

TRANSMISSION LINES (km)

TYPE OF LINES

400 kV

DC 400 kV

150 kV

66 kV

TOTAL

OVERHEAD LINES

2.760,48

106,95

8.240,95

39,05

11.147,43

SUBMARINE CABLES

 

 

807,51

72,2

879,71

SUBMARINE CABLES (underground part)

 

 

28,1

2,8

30,90

UNDERGROUND LINES

31,45

 

303,90

 

335,35

TOTAL

2.791,93

106,95

9.380,47

114,05

12.393,39

 

Transformer and Switching Substations which contain IPTO assets:

SUBSTATIONS WITH IPTO ASSETS

TYPE

TRANSFORMER

SWITCHING

TOTAL SUBSTATION

HVC - SWITCHING (400KV)

18

4

22

STEP-DOWN - SWITCHING SUBSTATION (150KV)

202

4

206

SUBSTATION OF HV CUSTOMERS - MINES

37

 

37

STEP-UP (PRODUCTION STATIONS)

28

 

28

STEP-UP RES PRODUCERS

68

 

68

TOTAL

 

 

361

 

Transformers and Transforming capacity - IPTO Fixed assets:

TRANSFORMERS

TRANSFORMER TYPE

VOLTAGE (kV)

NUMBER OF TRANSFORMERS

MVA CAPACITY

AUTOTRANSFORMERS

400/150/30

62

16.940

AUTOTRANSFORMERS

150/66

1

50

CONVERTER STATION TRANSFORMER

400

1

597

STEP-DOWN TRANSFORMER

150/66

2

50

SVC TRANSFORMER

150/20

2

150

TOTAL   68 17.787

 

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

7.106

PRODUCERS

150

50

6.029

STEP-UP RES PRODUCER

20

2

7

150

94

5.342

TOTAL   167 18.485  

STEP-DOWN

150/20

412

17.454

HEDNO

66/20

3

75

STEP-DOWN

150/20

5

212

PRODUCERS

STEP-DOWN AUXILIARY

150

21

966

STEP-DOWN

150/20

13

650

PPC / MINES

STEP-DOWN

150/MT

89

2.595

HV CUSTOMERS

TOTAL   543 21.952  
GENERAL TOTAL   710 40.437