Siemens SIPROTEC 4, Руководство пользователя

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Information List
No. Information Type of
Informa-
tion Comments
- P-GrpA act IntSP Setting Group A is active
- P-GrpB act IntSP Setting Group B is active
- P-GrpC act IntSP Setting Group C is active
- P-GrpD act IntSP Setting Group D is active
7 >Set Group Bit0 SP >Setting Group Select Bit 0
8 >Set Group Bit1 SP >Setting Group Select Bit 1
Power System Data 2
Description
The general protection data (
P.System Data 2
) include settings associated with all functions rather than a
specific protection or monitoring function. In contrast to the
P.System Data 1
as discussed before, they
can be changed with the setting group.
Applications
When the primary reference voltage and the primary reference current of the protected object are set, the
device is able to calculate and output the operational measured value percentage.
For purposes of fault location, a maximum of three different line sections can be considered.
For utilization in motors, detection of the motor start represents an important feature. Exceeding a configured
current value serves as a criterion.
Setting Notes
Definition of Nominal Rated Values
At addresses 1101
FullScaleVolt.
and 1102
FullScaleCurr.
, the primary reference voltage (phaseto-
phase) and reference current (phase) of the protected equipment is entered (e.g. motors). If these reference
sizes match the primary nominal values of the VTs and CTs, they correspond to the settings in address 202 and
204 (Section
2.1.3.2 Setting Notes ). They are generally used to show values referenced to full scale.
Ground Impedance Ratios (only for Fault Location)
The adjustment of the ground impedance ratio is only important for the utilization of the line fault location
function. This is done by entering the resistance ratio
RE/RL
and the reactance ratio
XE/XL
.
The values under addresses 1103 and 1104 apply if only one line section is available and to all faults that
occur outside the defined line sections.
If several line sections are set, the following shall apply:
•
for line section 1, addresses 6001 and 6002
•
for line section 1, addresses 6011 and 6012
•
for line section 1, addresses 6021 and 6022.
Resistance ratio
RE/RL
and reactance ratio
XE/XL
are calculated formally and do not correspond to the real
and imaginary components of Z
E
/Z
L
. No complex calculation is required! The ratios can be obtained from the
line data using the following formulas:
[formelfehlerorter-260602-kn, 1, en_US]
2.1.5.4
2.1.6
2.1.6.1
2.1.6.2
Functions
2.1 General
SIPROTEC 4, 7SJ62/64, Manual 51
C53000-G1140-C207-8, Edition 08.2016