Testing The Voltage Selection - ABB RET670 Commissioning Manual

Section 10
Testing functionality by secondary injection
Testing the dead bus dead line (DBDL)
The test should verify that the energizing check function trips for a low voltage on both the V-Bus
and the V-Line, that is, closing of the breaker in a non-energized system. Test is valid only when
this function is used.
1. Verify the local HMI setting
2. Set the parameter
3. Apply a single-phase voltage of 30%
of 30%
4. Check that the MANENOK output is activated after set
5. Increase the V-Bus to 80%
The outputs should not be activated.
6. Repeat the test with
voltage.
10.10.1.4

Testing the voltage selection

Testing the voltage selection for single CB arrangements
This test should verify that the correct voltage is selected for the measurement in the SESRSYN
function used in a double-bus arrangement. Apply a single-phase voltage of 100%
to the V-Line and a single-phase voltage of 100%
If the VB1/2OK inputs for the fuse failure are used, they must be activated, during tests below.
Also verify that deactivation prevents operation and gives an alarm.
1. Connect the signals above to binary inputs and binary outputs.
2. Connect the voltage inputs to the analog inputs used for each bus or line depending of the
type of busbar arrangement and verify that correct output signals are generated.
Testing the voltage selection for double breaker
This test should verify that correct voltage is selected for the measurement in the SESRSYN
function used for a diameter in a Breaker-and-a-half arrangement. Apply a single-phase voltage of
100% GblBaseSelLine to the V-Line and a single-phase voltage of 100% GblBaseSelBus to the V-
Bus. Verify that correct output signals are generated.
1. Connect the analog signals to the voltage inputs, in pair of two for V1 and V2. (Inputs V3PB1,
V3PB2, V3PL1, V3PL2)
2. Activate the binary signals according to the used alternative. Verify the measuring voltage on
the synchronizing check function SESRSYN (25). Normally it can be good to verify
synchronizing check with the same voltages and phase angles on both voltages. The voltages
should be verified to be available when selected and not available when another input is
activated so connect only one voltage transformer reference at each time.
3. Record the voltage selection tests in a matrix table showing read values and AUTOSYOK/
MANSYOK signals to document the test performed.
Testing the voltage selection for 1 1/2 CB arrangements
At test of the SESRSYN (25) function for a breaker-and-a-half diameter the following alternative
voltage inputs can be used for the three SESRSYN (SESRSYN 1, SESRSYN 2, SESRSYN 3) functions.
These three SESRSYN functions can either be in one, two or three different IEDs. Table
describes the scenario when SESRSYN 1, SESRSYN 2 and SESRSYN 3 all are in the same IED. If
SESRSYN 3 is in another IED, WA1 will be considered as WA2 and LINE2 as LINE1. The voltage is
192
AutoEnerg to be Disabled and ManEnerg to be DBLL .
ManEnergDBDL to Enabled .
GblBaseSelLine to the V-Line.
GblBaseSelBus and keep the V-Line equal to 30% GblBaseSelLine .
ManEnerg set to DLLB with different values on the V-Bus and the V-Line
GblBaseSelBus to the V-Bus and a single-phase voltage
tManEnerg .
GblBaseSelBus to the V-Bus.
1MRK 504 154-UUS B
M2377-323 v8
M2377-342 v2
M2377-473 v7
GblBaseSelLine
M2377-691 v6
GUID-12E7DA63-FE04-4C83-9BA6-34818C510DB8 v4
33
Commissioning manual