Quadrilateral Characteristics - ABB Relion 650 Series Commissioning Manual

Section 7
Testing functionality
7.3.1.1

Quadrilateral characteristics

Consider releasing Zone 1, the Phase selection with load encroachment, quadrilateral
characteristic FDPSPDIS and the Tripping logic SMPPTRC.
Measure operating characteristics during constant current conditions. Keep the measured
current as close as possible to its rated value or lower. But make sure it is higher than the set
minimum operating current.
Ensure that the maximum continuous current to the IED does not exceed four times its rated
value, if the measurement of the operating characteristics runs under constant voltage
conditions.
The test procedure has to take into consideration that the shaped load encroachment
characteristic is active. It is therefore necessary to check the setting. To verify the settings
with the shaped load encroachment characteristic the test should be carried out according to
figures
To verify the settings the following fault types should be tested:
• One phase-to-phase fault
• One phase-to-earth fault
The shape of the operating characteristic depends on the values of the setting parameters.
Phase-to-phase faults
The angles a (angle on blinder in second quadrant for forward direction), b (load angle
determining the load impedance area), c (angle to blinder in fourth quadrant for forward
direction), d (line angle) and e (angle for earth compensation factor KN) in the figures below
are adjusted with the parameters
4
IEC09000724 V1 EN-US
Figure 10: Distance protection characteristic with test points for phase-to-phase
48
10 and 11 and tables 3 and 4.
X
0.5 · RFPP
Z
1
80%
7
50%
a
5
d b
2
c
6
RLdFw
measurements
© Copyright 2013 ABB. All rights reserved
ArgNegRes , ArgLd , ArgDir , LineAng and KNAng respectively.
3
R W/phase
IEC09000724_1_en.vsd
1MRK 506 336-UEN B
GUID-7ABA3DF3-C3EA-4056-936C-64F3234341BE v1
GUID-5C5A8209-57E5-4C32-97BE-69EA16758CC6 v1
Line distance protection REL650
Commissioning manual