Operation Principle - ABB RELION 630 Series Technical Manual

1MRS757256 F
3.14.1.3
PML630/Compact Load-Shedding Solution
Technical Manual
The Disturbance report function is characterized by great flexibility regarding
configuration, starting conditions, recording times, and large storage capacity.
A disturbance is defined as an activation of an input to the AxRADR or BxRBDR
function blocks, which are set to trigger the disturbance recorder. All signals from start
of pre-fault time to the end of post-fault time are included in the recording.
Every disturbance report recording is saved in the IED in the standard Comtrade
format. The same applies to all events, which are continuously saved in a ring-buffer.
The LHMI is used to get information about the recordings. The disturbance report files
may be uploaded to PCM600 for further analysis using the disturbance handling tool.

Operation principle

Disturbance report DRRDRE is a common name for several functions to supply the
operator, analysis engineer, and so on, with sufficient information about events in the
system.
• Event list
• Indications
• Event recorder
• Trip value recorder
• Disturbance recorder
Figure 41 shows the relations between Disturbance Report, included functions and
function blocks. Event list, Event recorder and Indications uses information from the
binary input function blocks (BxRBDR). Trip value recorder uses analog information
from the analog input function blocks (AxRADR). Disturbance recorder DRRDRE
acquires information from both AxRADR and BxRBDR.
Section 3
Basic functions
77