Метода по ТОЭ 1112

P 3P 3U I cos 3U I cos ,

(8.1)

IA

Z

UAB

W1

A

UA

V

30

UAB

Z

IB

A

O1

I

B

UCB

U

Z

IC

W2

IC

C

UB

30

UC

. 8.1.

. 8.2. ,

,

cos 300

,

P

U

I

(8.2)

1

cos 300

.

P

U

I

(8.3)

2

, =0

(

); =600,

P =0,

1

;

>600

P <0,

1

Z

R

A

W1

IA

UAB

B

IB

O1

A

I

X

UBC

A

C

IC W2

I

xC

I

Z

. 8.5.

. 8.6.

8.1

/

U

,

I

,

P ,

P , cos

P P P ,

P 3U I cos ,

1

2

1 2

8.2

/

U ,

I ,

N1 ,

N2 , sin Q

3

N1 N 2 , Q

3U I sin ,

2

u(t) U0

U1m

sin( t 1) U 2m

sin(2 t 2 ) .....

(9.1)

Ukm sin(k t k ) ..... ,

i(t) I1m sin( t 1 1) I2m

sin(2 t 2 2 ) .....

Ikm sin(k t k k ) ..... ,

(9.2)

Ikm - k ;

k - k .

Ikm

Ukm

,

(9.3)

r 2 (k L

1

)2

k C

k L

1

k

arctg

k C

.

(9.4)

r

x(k)

x(k)

L

:

C

x(k) k L,

(9.5)

L

1

x(k)

.

(9.6)

C

k C

P n P(k ) U (0) I (0) U (1) I (1) cos (1) U (2) I (2) cos (2) .....

(9.7)

k 0

U (k ) I (k) cos (k) ..... U (n) I (n) cos (n)

,

: k - ;

n - ;

U (k ) I (k ) - k .

U

I

:

U

U (0)2 U (1)2 U (2)2 ..... U (k )2 ..... U (n)2

I I (0)2 I (1)2 I (2)2 ..... I (k)2 ..... I (n)2

(9.8)

f ( t) T n

t 2

n

. 9.1)

,

,

.

A0

,

k

A'

k A''

k

k

1

2

1 p n

2 1 p n

(9.10)

A0

f ( t ) d( t )

f p( t )

f p ( t ),

2

0

2 p 1

n n p 1

A'

1

2

1

p n

2

f ( t ) sin( k t ) d( t )

f p ( t ) sin p ( k t )

(9.11)

n

k

0

2

p 1

p n

f p ( t ) sin p

( k t ),

n

1

p 1

1

2

A''

2

p n

f ( t ) cos( k t ) d( t )

f p ( t ) cosp ( k t )

(9.12)

n

k

0

2

p 1

p n

f p ( t ) cosp ( k t ),

n

p 1

: f p ( t) -

p

f( t)

p

1 n );

sin p (k t) -

f ( t)

f2( t)

p

,

t

t

180o

270o

0

k.

90o

360o

f1( t)

t

,

.

2

.9.1.

n 24 n 18 .

)

A

( A' )2

( A'' )2

,

(9.13)

k

k

A''

k

k

arctg

k

,

(9.14)

A'

Ak k - ,

k

k

.

2.1.1. .9.2.

.

r1 - 20

– 50 .

2.1.2.

. 9.1

),

r

,

,

r 2.

9.1

,

r,

I ,