Table of Contents
Advertisement
Section 9
Testing IED operation
The frequency and active power are located under Main menu /Measurements /Monitoring /
ServiceValues(MMXN) /CVMMXN:x . Then navigate to the bottom of the list to find the
frequency.
4.
Inject an unsymmetrical three-phase voltage and current, to verify that phases are correctly
connected.
If some setting deviates, check the analog input settings under
Main menu /Configuration /Analog modules
9.7
Testing the protection functionality
Each protection function must be tested individually by secondary injection.
•
Verify operating levels (trip) and timers.
•
Verify alarm and blocking signals.
•
Use the disturbance handling tool in PCM600 to evaluate that the protection function has
received the correct data and responded correctly (signaling and timing).
•
Use the event viewer tool in PCM600 to check that only expected events have occurred.
9.8
Forcing of binary input/output signals for testing
9.8.1
Forcing concept
Forcing of binary inputs and outputs is a convenient way to test wiring in substations as well as
testing configuration logic in the IEDs. Basically it means that all binary inputs and outputs on the IED
I/O modules (BOM, BIM, IOM & SOM) can be set to a value (i.e active or not-active), selected by the
user, while the IED is in test mode. For inputs, this is true regardless of the actual signal voltage
present on the input. For outputs, any output relay can be forced to be active or not, regardless of the
current requested state of the output in the IED logic configuration.
9.8.2
How to enable forcing
To enable forcing, the IED must first be put into IED test mode. While the IED is not in test mode, the
LHMI/PCM600 menus that relate to forcing will not have any effect on the input/output status due to
safety reasons.
9.8.2.1
Enable forcing by using LHMI
1.
Enable IED TESTMODE by setting IEDTestMode to On under Main menu /Test /IED test
mode /TESTMODE:1 .
64
Be observant that forcing of binary inputs and outputs on an IED, with inappropriate
setup, can result in potential danger.
© 2017 - 2022 Hitachi Energy. All rights reserved
1MRK 505 372-UEN Rev. K
GUID-125B6F28-D3E5-4535-9CD6-6C056B79F496 v2
GUID-3FD8C676-10E5-432A-8CD5-4643299AD794 v2
GUID-50280F59-A98C-4E48-AB6D-2B4C138943DD v2
GUID-41F7C636-75BC-42EF-A955-4BD9E347619E v2
Busbar protection REB670
Commissioning manual
Advertisement
Table of Contents
