ABB ACS800-67, Описание системы и руководство по запуску

Страница: 57 / 120

Start-up with medium voltage stator 57
Enter the generator data from the generator data sheet. For more
information, see section
Generator data on page 81 .
• generator nominal voltage (U1) 99.02 MOTOR NOM
VOLTAGE
• generator nominal stator-side current (I1) 99.03 MOTOR NOM
CURRENT
• generator nominal frequency 99.04 MOTOR NOM
FREQ
• generator nominal speed 99.05 MOTOR NOM
SPEED
• generator nominal power
Note: Generator values must be given at 50 Hz (60 Hz). Calculate
generator nominal power with the following equation:
99.06 MOTOR NOM
POWER
• generator power factor (cos) 99.12 MOTOR NOM
COSFII
• generator synchronous speed 99.14 MOTOR SYNC
SPEED
• open-circuit voltage of the rotor (U2) 99.15 MOTOR OPEN CKT
V
• maximum allowed long time rotor current limit (for reactive power
supervision) I
M
99.16 MOTOR NOM IM
• resistances and reactances of the generator equivalent circuit.
Mutual inductance 99.24 X
m
is calculated with the following equation:
E = stator voltage without losses (on the generator data sheet)
U = stator voltage (on the generator name plate).
The rotor resistance 99.25 R
r
(R2PH on the ABB generator
equivalent circuit data) reduced to the stator reference frame is
calculated with the following equation:
Note: Some generator manufacturers give equivalent circuit data for
delta connection. In that case the given reactance values must be
divided by three.
99.21 Rs
99.22 XIS
99.23 X2S
99.24 XM
99.25 Rr
• maximum measurable stator flux. See section Stator current and
voltage measurement on page 79.
99.27 MAX MEAS FLUX
Define the maximum measurable stator current (depends on the used
current transformer). See section
Stator current and voltage
measurement on page 79.
99.28 MAX MEAS IS
99.06 MOTOR NOM POWER
99.05 MOTOR NOM SPEED Wind turbine nom. power
⋅
Wind turbine nom. speed
---------------------------------------------------------------------------------------------------------------------------------------------------- =
Xm
E
U
----
U
1
⋅
3 Im
⋅
------------------
=
Rr
R 2 PH
U
2
U
1
--------
 
 
2
------------------
=