1MAC050144-MB C
Section 4
Protection functions
615 series ANSI
361
Technical Manual
Commissioning
The correct settings, which are CT connection type, Winding 1 type, Winding 2 type and
Clock number, for the connection group compensation can be verified by monitoring the
angle values I_ANGL_A1_B1, I_ANGL_B1_C1, I_ANGL_C1_A1, I_ANGL_A2_B2,
I_ANGL_B2_C2, I_ANGL_C2_A2, I_ANGL_A1_A2, I_ANGL_B1_B2 and
I_ANGL_C1_C2 while injecting the current into the transformer. These angle values are
calculated from the compensated currents. See signal description from Monitored data
table.
When a station service transformer is available, it can be used to provide current to the high
voltage side windings while the low voltage side windings are short-circuited. This way
the current can flow in both the high voltage and low voltage windings. The
commissioning signals can be provided by other means as well. The minimum current to
allow for phase current and angle monitoring is 0.015 Ir.
Figure 173:
Low voltage test arrangement. The three-phase low voltage source can
be the station service transformer.
The Tapped winding control setting parameter has to be set to "Not in use" to make sure
that the monitored current values are not scaled by the automatic adaptation to the tap
changer position. When only the angle values are required, the setting of Tapped winding
is not needed since angle values are not affected by the tap changer position adaptation.
ZNyn5
ZN
yn
Clk Num 5
HV side
ZNy5
ZN
y
Clk Num 5
Not needed
Zy7
Z
y
Clk Num 7
Not needed
Zyn7
Z
yn
Clk Num 7
Not needed
ZNyn7
ZN
yn
Clk Num 7
HV side
ZNy7
ZN
y
Clk Num 7
Not needed
Yy0
Y
y
Clk Num 0
Not needed
Vector group of the
transformer
Winding 1 type
Winding 2 type
Clock number
Zro A Elimination
Summary of Contents for 615 Series ANSI
Page 1: ...Relion Protection and Control 615 series ANSI Technical Manual ...
Page 2: ......
Page 29: ...1MAC050144 MB C Section 615 series ANSI 22 Technical Manual ...
Page 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Page 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Page 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Page 711: ...Section 16 1MAC050144 MB C Glossary 704 615 series ANSI Technical Manual ...
Page 712: ......