Schweitzer Engineering SEL-351P - Section 6: Close and Reclose Logic

Date Code 990215 Close and Reclose Logic i
SEL-351P Manual Técnico
TABLE OF CONTENTS
SECTION 6: CLOSE AND RECLOSE LOGIC ........................................6-1
Close Logic...................................................................................................................................6-1
Set Close ...............................................................................................................................
6-2
Unlatch Close........................................................................................................................
6-3
Factory Settings Example .....................................................................................................
6-3
Defeat the Close Logic..........................................................................................................
6-3
Circuit Breaker Status...........................................................................................................
6-3
Program an Output for Closing.............................................................................................
6-4
Reclose Supervision Logic ...........................................................................................................
6-4
Settings and General Operation............................................................................................
6-7
Reclose Supervision Limit Time = 0 (top of Figure 6.2)..............................................
6-7
Reclose Supervision Limit Time > 0 (bottom of Figure 6.2 and Figure 6.3) ...............
6-7
Set Reclose Supervision Logic (bottom of Figure 6.2).........................................
6-8
Unlatch Reclose Supervision Logic (bottom of Figure 6.2) .................................
6-8
Settings Example 1 ...............................................................................................................
6-9
SEL-351P(1) Recloser Control .....................................................................................
6-9
SEL-351P(2) Recloser Control .....................................................................................
6-9
Other Setting Considerations for SEL-351P(1) and SEL-351P(2) Recloser
Controls ...............................................................................................................
6-10
Settings Example 2 .............................................................................................................
6-10
Reclosing Relay..........................................................................................................................
6-11
Reclosing Relay States and General Operation ..................................................................
6-12
Lockout State ..............................................................................................................
6-13
Reclosing Relay States and Settings/Setting Group Changes.............................................
6-13
Defeat the Reclosing Relay.................................................................................................
6-14
Close Logic Can Still Operate When the Reclosing Relay is Defeated .....................
6-14
Reclosing Relay Timer Settings..........................................................................................
6-15
Open Interval Timers ..................................................................................................
6-15
Determination of Number of Reclosures (Last Shot) .................................................
6-16
Observe Shot Counter Operation ................................................................................
6-16
Reset Timer.................................................................................................................
6-17
Monitoring Open Interval and Reset Timing..............................................................
6-17
Reclosing Relay Shot Counter ............................................................................................
6-18
Reclosing Relay SEL
OGIC Control Equation Settings Overview.......................................6-18
Reclose Initiate and Reclose Initiate Supervision Settings (79RI and 79RIS,
respectively) ................................................................................................................
6-19
Factory Settings Example ...........................................................................................
6-19
Additional Settings Example ......................................................................................
6-20
Other Settings Considerations.....................................................................................
6-20
Drive-to-Lockout and Drive-to-Last Shot Settings (79DTL and 79DLS,
respectively) ................................................................................................................
6-21
Factory Settings Example ...........................................................................................
6-21
Other Settings Considerations.....................................................................................
6-22
Skip Shot and Stall Open Interval Timing Settings (79SKP and 79STL,
respectively) ................................................................................................................
6-22