EJERCICIOS 11.2

Repita el problea 11.1 para a) una falla LL b)LLT

Calculo de valores Base:

Para FALLA LINEA-LINEA

CALCULO DE CORRIENTES

j 1

Vb 11 kVSb 25 MVA

Zthsec1 j 0.2 pu

Zthsec2 j 0.3 pu

Zthsec0 j 0.1 pu

IbaseSb 10

3

3 Vb1.312 10

3 A

a1

2

3 j

2 0.5 0.866i

E 1 0i zf 0

0.5 0.87i

A1

1

1

1

1

2

1

2

A11

0.335

0.333

0.333

0.333

0.167 0.287i

0.165 0.287i

0.333

0.165 0.287i

0.167 0.287i

Ia11E

Zthsec1 Zthsec2( ) 3 zf2i Va01 0

Ia21 Ia11( ) 2i

Ia01 0

Va11 E Zthsec1 Ia11( ) 0.6

Va21 Zthsec2 Ia21 0.6

Ia1

Ib1

Ic1

A1

Ia01

Ia11

Ia21

0

3.48 0.014i

3.48 0.014i

Va1

Vb1

Vc1

A1

Va01

Va11

Va21

1.2

0.604

0.604

VOLTAJES REALES

Para FALLA LINEA-LINEA A TIERRA

CALCULO DE CORRIENTES

Vab1 Va1 Vb1 1.804

Vbc1 Vb1 Vc1 0

Vac1 Va1 Vc1 1.804

VABreal1 1.804 1110

3

3 1.146 10

4 V

VBCreal1 0 1110

3

3 0 V

VACreal1 1.804 1110

3

3 1.146 10

4 V

E 1 0i zf 0

0.5 0.87i

A1

1

1

1

1

2

1

2

A11

0.335

0.333

0.333

0.333

0.167 0.287i

0.165 0.287i

0.333

0.165 0.287i

0.167 0.287i

Ia1E

Zthsec1Zthsec0 Zthsec2( )

Zthsec0 Zthsec2

3 zf

3.636i

Ia0E

Zthsec2

Zthsec1 Zthsec2

Zthsec2

Ia1 2.727i

Ia2 Ia1 Ia0( ) 0.909i

Va0 3 zf Zthsec0( ) Ia0 0.273

Va1 Va0 0.273

VOLTAJES REALES

Va2 Va0 0.273

xy2pol 3.955 4.085( )5.686

0.802

Ia

Ib

Ic

A1

Ia0

Ia1

Ia2

0

3.955 4.116i

3.955 4.085i

xy2pol 3.955 4.116( )5.708

2.336

Va

Vb

Vc

A1

Va0

Va1

Va2

0.818

1.882 103

1.882 103

Ireal Ibase Ia1 4.771i 103

A

Vab Va Vb 0.82

Vbc Vb Vc 0

Vac Va Vc 0.82

VABreal 0.82 1110

3

3 5.208 10

3 V

VBCreal 0 1110

3

3 0 V

VACreal 0.82 1110

3

3 5.208 10

3 V