Centralized Dfr System; Distributed Dfr System (Ddfr) - GE Multilin DDFR Instruction Manual

OVERVIEW

2.1.1.1 Centralized DFR System

2.1.1.2 Distributed DFR System (DDFR)

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In the centralized DFR system, every station connection point is duplicated and connected
via separate wiring, to the DFR for measurement. All information from each asset is
directly recorded on the DFR, requiring appropriate duplicate wiring from the asset in
question, to both the relay and the digital fault recorder for each measurement taken.
The internal recording systems integral to GE Multilin relays, are not used
.
FIGURE 2–1: Centralized Digital Fault RecorderSystem
In the distributed DFR (DDFR) the data recording facilities already built into the GE Multilin
protection relays, record all information. This data is retrieved by the station DDFR(s) and
stored and processed for analysis. No duplicate station wiring is required; data from the
GE Multilin relays is routed to the DDFR(s) by simple network wiring (usually already
installed) and from the DDFR(s) to the computer-based analysis system (the DDFR Archiver)
via an Ethernet connection.
CHAPTER 2: PRODUCT DESCRIPTION
DISTRIBUTED DIGITAL FAULT RECORDER – INSTRUCTION MANUAL