Operating Modes; Four-Position Selector Switch Implementation - GE MiCOM P40 Agile Technical Manual

P14x
DDB Signal Number
456 DAR In Progress
461 LiveDead Ccts OK
7.1

OPERATING MODES

The Autoreclose function has three operating modes:
● Auto Mode: Autoreclose is in service
Non-auto Mode: Autoreclose is out of service AND the chosen protection functions are blocked if setting AR
●
Deselected = Block Inst Prot.
Live Line Mode: Autoreclose is out of service, but protection functions are NOT blocked, even if setting AR
●
Deselected = Block Inst Prot.
Note:
Live Line Mode provides extra security for live line working on the protected feeder.
The Autoreclose function must first be enabled in the CONFIGURATION column. You can then select the operating
mode according to application requirements. The basic method of mode selection is determined by the setting AR
Mode Select in the AUTORECLOSE column, as summarised in the following table:
AR Mode Select Setting
Command Mode
Opto Set Mode
User Set Mode
Pulse Set Mode
The Live Line Mode is controlled by AR LiveLine Mode. If this is high, the scheme is forced into Live Line Mode
irrespective of the other signals.
7.1.1

FOUR-POSITION SELECTOR SWITCH IMPLEMENTATION

It is quite common for some utilities to apply a four position selector switch to control the mode of operation. This
application can be implemented using the DDB signals AR LiveLine Mode, AR Auto Mode and Telecontrol Mode.
This is demonstrated in the following diagram.
P14xEd1-TM-EN-1
Variation 1
Auto or Non-auto mode selection is determined by the command cell Autoreclose Mode in the CB CONTROL
column.
Auto or Non-auto mode selection is determined by an opto-input mapped to AR Auto Mode
If the AR Auto Mode input is high, Auto operating mode is selected. If the AR Auto Mode input is low, Non-
Auto operating mode is selected.
Auto or Non-auto mode selection is controlled by the Telecontrol Mode input. If the Telecontrol Mode input
is high, the setting Autoreclose Mode in the CB CONTROL column is used to select Auto or Non Auto
operating mode. If the Telecontrol Mode input is low, it behaves as for the Opto Set Mode setting.
Auto or Non-auto mode selection is determined by the falling edge of Telecontrol. If the Telecontrol input is
high, the operating mode is toggled between Auto and Non Auto Mode on the falling edge as it goes low.
The Auto Mode pulses are produced by the SCADA system.
If the Telecontrol input is low, it behaves as for the Opto Set Mode setting.
Variation 2
AR In Progress 1
Circuits OK
Description
Chapter 13 - Autoreclose
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