Power Protection; Three-Phase Power Directional Element Dpsrdir - ABB RELION REC615 Technical Manual

1MRS758755 C
Characteristic
Reset time
Operate time accuracy
4.6

Power protection

4.6.1

Three-phase power directional element DPSRDIR

4.6.1.1 Identification
Function description
Three-phase power directional ele-
ment
4.6.1.2 Function block
U1
I1
BLOCK
Figure 228: Function block
4.6.1.3 Functionality
The three-phase power directional element DPSRDIR is used to detect positive-
sequence power direction. The output of the function is used for blocking or
releasing other functions in protection scheme.
The directional positive-sequence power protection contains a blocking
functionality which blocks function output and resets Timer.
4.6.1.4 Operation principle
The function can be enabled and disabled with the
corresponding parameter values are "On" and "Off".
The operation of DPSRDIR can be described with a module diagram. All the modules
in the diagram are explained in the next sections.
REC615 & RER615
Technical Manual
df/dt
DPSRDIR
RELEASE
Value
<120 ms
<150 ms
±1.0% of the set value or ±30 ms
IEC 61850 IEC 60617
identification identification
DPSRDIR I1->
Operation setting. The
Protection functions
ANSI/IEEE C37.2
device number
32P
467