GE Multilin W650, Инструкция по эксплуатации

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5-76 W650 Wind Generator Protection System GEK-113032A
5.5 CONTROL ELEMENTS 5 SETTINGS
5
5.5.4 AUTORECLOSE (79)
5.5.4.1 INTRODUCTION
Note: The Switchgear element used in the W650 autoreclose element is the one configured in the Number of Switchgear
setting inside Breaker settings , at “ Setpoint > System Setup > Breaker > Breaker settings ”. Configuration of these
Switchgear parameters is performed at Setpoint > Relay Configuration > Switchgear using the EnerVista 650 Setup
software.
The W650 autoreclose element allows producing up to four breaker “shots” prior to lockout. Thanks to the great flexibility of
the W650 configurable logic, the conditions to produce the autoreclose initiation and the selection of which protection
elements will be enabled after each shot can be programmed. This flexibility allows implementing protection schemes that
used to require wiring and special functions in conventional equipments. One application is, for instance, to program as
instantaneous the first protection trip and the second one to be time delayed, in order to give time for output fuses to
burning of a feeder branch. This can be as simple as disabling the instantaneous elements after the first shot using the
programmable logic. (see example in section 5.5.4.6)
5.5.4.2 MAIN AUTORECLOSE SETTINGS
Setpoint > Control Elements > Autoreclose
Table 5–71: 79 ELEMENT SETTINGS
Autoreclose settings description:
Function: This setting allows enabling or disabling the autoreclose operation. If this setting is adjusted as
DISABLED, the recloser will be out of service.
Max Number Shots: This setting specifies the number of autoreclose shots allowed in the element. If this number is
exceeded, the autoreclose goes to LOCKOUT status, and the fault is considered to be permanent.
Dead Time 1 ... 4: These times correspond to the first, second, third and fourth breaker reclosings configured in the
element.
Reclaim Time (also known as safety time or reset lockout delay ) : This is the time required to go from LOCKOUT
to READY status once the breaker is closed.
Cond. Permission: This setting enables the verification of the relay reclose conditions. If this setting is enabled, before
the breaker closing command execution the system will verify the possible reclose conditions. If this
setting is disabled, the closing command will be executed after the reclose time without verifying
these conditions. The reclose conditions input is configured as AR CONDS INPUT at
Setpoint >
Relay Configuration > Protection Elements
Hold Time: This setting indicates the waiting time for the reclose conditions to be present. This setting is only
operative if the Cond. Permission setting is enabled.
Reset Time: This is the time that the autoreclose takes to return to READY status after a successful reclose. Once
this time has expired, the shot counter will reset and the autoreclose will get to READY.
SETPOINT > CONTROL ELEMENTS > AUTORECLOSE
SETTING DESCRIPTION NAME DEFAULT
VALUE STEP RANGE
Function permission Function DISABLED N/A [DISABLED – ENABLED]
Maximum Number of shots Max Number Shots 1 N/A [1 : 4]
Dead time 1 Dead Time 1 0.00 0.01 s [0.00 : 900.00]
Dead time 2 Dead Time 2 0.00 0.01 s [0.00 : 900.00]
Dead time 3 Dead Time 3 0.00 0.01 s [0.00 : 900.00]
Dead time 4 Dead Time 4 0.00 0.01 s [0.00 : 900.00]
Reclaim time or reset lockout delay Reclaim Time 0.00 0.01 s [0.00 : 900.00]
Reclose conditions permission Cond. Permission DISABLED N/A [DISABLED – ENABLED]
Hold time Hold Time 0.00 0.01 s [0.00 : 900.00]
Reset time Reset Time 0.00 0.01 s [0.00 : 900.00]
Snapshot event generation Snapshot Events ENABLED N/A [DISABLED – ENABLED]