Transformation of the turbogenerator block diagram-2

14.2

Fig. 6 shows the transformation of the block diagram of

the turbogenerator in the section ΔUa*/ΔEfd*. Therefore, we

are interested in the behavior of the regulation system when acted

upon by the excitation system, assuming Mмх = const. The

transfer functions Gг1(p) and Gг2(p) are determined using using

the method of Logarithmic Amplitude-Frequency

Characteristics (LAFC) (see Fig. 7, page 14.6).
G3.2(p) = 
Δδ1
ΔEfd*
  = 
G2
1 + G2·H2
 
When G2

>
1
H2
 :

G3.2

 =
1
H2
When  G2

<
1
H2
 

G3.2

=

 G2  
G2=   
K2·K3·ωн·1/D
(1 + p·T′do·K3(1 +p·T1)
 · 
1
p

 =
  =

1.29·0.26·1/2·314

(1 +p·9.3·0.26)(1+p5)

·
1
p

=

  
52.6
(1 + p·2.4)(1 +p·5)
 · 
1
p

at

   p=1,   K

=

  
52.6
2.4·5
  =4.34
 
1
H2
  = 
1
K4
  = 
1
1.68
  = 0.58

From plots:

G3.2

=

0.58

 ·

1
(1 + p·0.55)3

G3.3

 =
G3
1 + G3·H3
   G3=1

H3

=
314·0.85·1/2
(1 + p·5)
  · 
1
p
  = 
133.5
1 + p·5

·
1
p
1
H3
  = 
p(1 + p·5)
133.5

 G3.4 

=
1
1 + G4·H4
            G4=1
H4

=
ωн·K2·K3·K4
D
 ·
1
p

·
1
1 +p·T1
 ·
1
1+ p·T′do·K3

=

= 

  
314·1.29·0.26·1.68
2
  · 
1
p
  · 
1
1 + p·5
  · 
1
1 + p·2.4