Completing The Test; Function Revision History; Current Harmonic Monitoring Chmmhai(Ithd); Verifying The Signals And Settings - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
12. Compute the time between the ALARM signal raise to CMLI2TALM signal raise and multiply with
the squared injected current.
13.
Add the calculated value with previously calculated I
14. Compare the calculated value with the set MaxI2tCmlWx value.
15. Bring the injected three-phase currents to the rated value.
11.13.7.2

Completing the test

Continue to test another function or end the test by changing the TestMode setting to Disabled. Restore
connections and settings to their original values, if they were changed for testing purposes.
11.13.8

Function revision history

Document
revision
D
E
F
G
H
J
K
11.13.9

Current harmonic monitoring CHMMHAI(ITHD)

Prepare the IED for verification of settings outlined in Section
11.13.9.1

Verifying the signals and settings

The current can be injected using common test equipment.
Verifying the warning and alarm time limit of THD, WrnLimitTHD and tDelayAlmTHD
1. Supply the IED with current at rated value.
2. Apply harmonics at the numerical multiple of fundamental frequency along with the injected current
signal.
3. Slowly increase the harmonic amplitudes until the THDWRN signal appears.
4. Compare the harmonic amplitude level value with the set warning limit value.
5. Continue to inject the same level of harmonics level until the THDALM signal appears and note
down the time from THDWRN set to THDALM set.
6. Compare the noted time value with the set time limit value of alarm.
206
Product History
revision
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.5
Updated monitoring till 9
th
monitoring till 5
© 2017 - 2021 Hitachi Power Grids. All rights reserved
2
t value.
th
order current harmonics. Refer to document revision J for
order current harmonics.
"Preparing the IED to verify
1MRK 511 403-UUS Rev. K
GUID-8F01A787-4FDA-48BA-8045-5DC678C9410C v1
GUID-5883ADA7-549A-464B-AC60-082A50165A2B v1
GUID-692151F8-812B-4B32-AE86-E7A4E4B0101B v1
GUID-804F309E-B02F-4F6B-B0FC-2C7AE3F12DBA v2
settings".
GUID-026F1A4F-E9A8-43DC-87E1-0831E0123E50 v1
GUID-92992D84-BDAA-436F-9D2E-3770A29EF956 v1
Bay control REC670
Commissioning manual