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ICS TRIPLEX T8830控制模块
重合闸尝试的最大故障持续时间“t操作”
如果故障持续一段时间，则成功重合闸的概率降低。电力系统的可能性故障持续很长时间后，如果自动重合闸尝试失败，则变得不稳定的可能性更大时期正是由于这些原因，在开始可启动重合闸的故障是有限的。过错使用参数“t Oper”设置持续时间。故障持续时间的计时器由拾取信号启动从保护功能（启动）。导致跳闸的故障在“t Oper”被锁定（“Def.Trip”）后，重合闸不会发生
如果故障持续时间在保护跳闸之前到期，自动重合闸被阻止，回收时间开始。示例：距离函数的时间“T操作”<“延迟（2）”表示自动重合闸仅在第一距离内发生故障区域（“延迟（1）”。
仅使用电流的方案不需要此功能功能。二进制输入“启动”和“跳闸断路器3P”连接在一起（见第3.5.32.3节）。回收时间“不抑制”禁止时间的目的之一是允许：断路器恢复其全部耐压能力。为此结束，在设定的时间内禁用自动重合闸功能
以下事件之一后的参数“禁止”：
最后一次重合闸尝试
故障后保护跳闸导致的最终跳闸持续时间“t操作”
鉴别时间和死区时间之间的重复跳闸（正在演变的故障，请参阅O/P信号“Def.Trip”）。
关闭信号持续时间“不关闭”断路器闭合信号（命令O/P“闭合CB”）的最大持续时间由参数“t闭合”确定。在此期间发生的任何跳闸信号都会覆盖关闭信号。第二次、第三次或第四次重合闸尝试只能如果下一次行程发生在“关闭”时间内，则发生。
辨别时间“t 1P discrim”和“t 3P discrim”识别时间决定以下情况下的程序：死区时间内发生的不同类型的故障（演变故障），即其他两个相位中的一个也拾取或跳闸信号复位并再次拾取。辨别时间是
从死时间开始。如果在识别时间到期和死区时间结束之前，由于不断演变的故障而再次出现跳闸信号，则回收计时器并启动最终跳闸（“Def.trip”）。死期并且信号“AR in prog.”重置。
如果第一个故障最初是接地故障，并在时间“t死1 1P”，但在鉴别时间“t”结束之前
Discrim 1P'启动死区时间“t Dead1 3P”，并进行三相重合闸。
Maximum fault duration for a reclosure attempt ‘t Oper’
If a fault has persisted for some time, the probability of a successful reclosure reduces. The likelihood of the power system
becoming unstable is also greater for an unsuccessful auto-reclosure attempt following a fault which has persisted for a long
period. It is for these reasons that the time after the inception of
a fault during which reclosure can be initiated is limited. The fault
duration is set using parameter ‘t Oper’.
The timer for the fault duration is started by the pick-up signal
from the protection function (Start). Faults resulting in tripping
after ‘t Oper’ are locked out (‘Def. Trip’) and reclosure does not
take place.
Should the fault duration time expire before the protection trips,
auto-reclosure is blocked and the reclaim time is started.Example:
Time ‘T Oper’ < ‘Delay(2)’ of the distance function means that
auto-reclosure only takes place for faults in the first distance
zone (‘Delay(1)’).
This function is not required for schemes that only use current
functions. The binary inputs ‘Start’ and ‘Trip CB 3P’ are connected together (see Section 3.5.32.3.).
Reclaim time ‘t inhibit’
The purpose of the inhibit time is among other things to permit
the circuit-breaker to recover its full voltage withstand. To this
end, it disables the auto-reclosure function for the time set for
parameter ‘t inhibit’ after one of the following events:
the last reclosing attempt
a definitive trip resulting from a protection trip after the fault
duration time ‘t Oper’
a recurring trip between discrimination time and dead time
(evolving fault, see O/P signal ‘Def. Trip’).
Close signal duration ‘t Close’
The maximum duration of the circuit-breaker close signal (command O/P ‘Close CB’) is determined by the parameter ‘t Close’.
Any tripping signal which occurs during this time overrides the
close signal. A second, third or fourth reclosure attempt can only
take place, if the next trip occurs within the time ‘t Close’.
Discrimination times ‘t 1P discrim.’ and ‘t 3P discrim.’
The discrimination time determines the procedure in the event of
a different kind of fault occurring during the dead time (evolving
fault), i.e. one of the other two phases also picks up or the tripping signal resets and picks up again. The discrimination time is
started together with the dead time. Should a tripping signal recur due to an evolving fault between the expiry of the discrimination time and before the end of the dead time, the reclaim timer
is started and a definitive trip (‘Def. Trip’) initiated. The dead time
is also discontinued and the signal ‘AR in prog.’ reset.
If the first fault was initially an earth fault and evolves during the
time ‘t Dead1 1P’, but before the end of the discrimination time ‘t
Discrim 1P’, the dead time ‘t Dead1 3P’ is started and threephase reclosure takes place.
