Siemens 6MD85, Руководство пользователя

Страница: 1087 / 1256

Parameters Transformer T
1
Transformer T
2
Power system →
CT 3-phase
:
Rated primary current
I
CT-prim
1500 A 3000 A
Power system →
CT 3-phase
:
Rated secondary current
I
CT-sec
1 A 5 A
Voltage cont. 2w →
General
:
Rated voltage
V
rated
10.5 kV 10.5 kV
Voltage cont. 2w →
General
:
Rated app. power transf.
S
rated
26 MVA 52 MVA
Voltage cont. 2w →
General
:
Rated current
I
rated
1430 A 2859 A
Target voltage V
target
11 kV 11 kV
For the transformer T
1
, with a desired control deviation of 1 % and the parameter
Reactive I control
factor
=
1
, the primary current is as follows:
[fo_ibs_regelabwd_ccm_values, 1, en_US]
•
Check the function values in all voltage controllers according to the following table:
Secondary Test
Infeed Transformer T
1
for D = 1 %
Secondary Test
Infeed Transformer T
2
for D = 1 %
Input values, secon-
dary T
1
T
2
T
1
T
2
I
sec
0.09622 A
-90° ph-gnd
-150° ph-ph 0 A 0 A 0.4041 A
-90° ph-gnd
-150° ph-ph
Phase-to-ground V
sec
31.754 V 57.735 V 31.754 V 57.735 V
Phase-to-phase V
sec
55 V 100 V 55 V 100 V
Functional measured values
V
act
11.0 kV 11.0 kV 11.0 kV 11.0 kV
I
load
144 A 0 A 0 A 243 A
Phase angle 90° - - 0°
I
load∑
144 A 144 A 243 A 243 A
I
CRC
90 A -90 A -91 A 91 A
ΔV
act
1 % -1 % -1 % 1 %
ΔV
act u
0 % 0 % 0 % 0 %
ΔV
act k
1 % -1 % -1 % 1 %
Checking the Pickup Value of the Circulating Reactive Current Blocking
If the value of the circulating reactive current exceeds the threshold value
Circul. current threshold
for a longer time than the set time delay
Circul. current time delay
, the indication
Circul.
current blocking
is issued and the voltage control is blocked.
Functional Tests
10.10 Commissioning Hints for Voltage Control
SIPROTEC 5, High-Voltage Bay Controller, Manual 1087
C53000-G5040-C015-9, Edition 11.2017