Sistemas de Transmisión de Energía eléctrica

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ɪexc.x = E4Zexc.x = 7114.68

→ ɪexc.x = 9.76

→ IG = Iexc.x + I´1 = 9.76

→ IG = 124.88 – j109.51

- → IG = 166.09

VG = E4 + IG (Rx + jXLx)

= 7114.68

=7114.68

=7100.1 + j455.4 + 136.37 + j114.47 VG

4.5 ˚

A) → VG = 7258.87 VL

41.25 ˚

IG

→fpG = cos(41.25 ˚ + 4.5 ˚ )

- → fpG = 0.698

→ PG = /VG/ * /IG/ * fpG

= 7,258.87 * 166.09 * 0.698

- → PG = 841,526.7 watts

%η Sistema = p en la cargap entregada por gen. * 100 = 800,00841,526.7* 100

- %η Sistema = 95.06 %

- Calcular VG, IG, fpG, % η sistema [pic 4]

Datos: PL = 800,000 watts IL VL

VL = 6,600 volts

FpL = 1 (Carga Resistiva)

Transformador Reductor :

→ PL = VL * IL * fpL → VL = 6,600

→ IL = 800,0006,600*1 = 121.21 amps IL = 121.21

→ E2 = VL + IL(RX + jXIx) = 6,600 ˚ 121.21 ˚ (0.163 + j1.06)

→ E2 = 6,600 ˚ + 121.21 ˚ (1.072 ˚)

→ E2 = 6,600 ˚ + 129.94 ˚

→ E2 = 6,621

→ E1 = 66,210 → I´L = 12.12

Iexc. H = E1Zexc.H = 66,210 → Iexc. H = 0.909

VG

5.48 ˚

VL

8.17 ˚

IG

→ fpG = cos (8.17 ˚ + 5.48 ˚)

→ fpG = 0.97

VG

PG = /VG/ * /IG/ * cos IG

= 6,781.1 * 126.17 * 0.97

PG = 829,904 watts

→ % η Sistema = pot. en la cargapot. saliendo del generador * 100

= 800,000829,904 * 100

→ % η Sistema = 96.4%

c) Calcular VG, IG, PG, fpG % η sistemas [pic 5]

Datos : PL = 800,000 watts

VL = 6,600 volts IL

FpL = 0.8 (capacitivo)

→ ӨL = cos .1 0.8 = 36.87 ˚ 36.87 ˚

VL

→ VL = 6,600

IL = PLVL*fpL → IL = 800,0006,600*0.8 = 151.51 amps

→IL = 151.51

E2 = VL + IL (Rx + jXIx) = 6,600

→ E2 =6,600

E2 = 6,600

→ E2 = 6,525

→ E1 = 65,250 → I´L = 15.15

Iexc H = 65,250 → Iexc H = 0.896

I1 = I´L + Iexc H = 15.15

→ I1 = 14.5

Transformador Elevador:

E3 = E1 + I1 (2RH + 2jXIH + R linea + JxI Linea)

→ E3 = 65,250

= 65,250

→ E3 = 65,234.22 + j1434.8 -2037.69 + j4.264.44

→ E3 = 63,453

→ E4 =6,345.3 → I´1 = 145