The operating logics and processes of the automatic transfer of the incoming line breaker and the bus-tie switch are presented.

给出了进线断路器备自投和母联开关备自投的工作逻辑和投切过程。

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Before reliability calculation with the network flow method, the affective area of tie switch is knew through computation of the AC load flow.

在实现思路上，先通过交流潮流确定联络开关的切换范围，再用前述的网流法计算系统可靠性。

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However, at the distribution level, 'tie switches are used to switch feeders or feeder sections between transformers in the same station, or to adjacent substations for substation transformer load.

然而在配电等级，联络开关用来开合同一变电站中不同变压器上的馈线或馈线段，或切换到邻近变电站以进行变电站变压器的负荷管理。

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Their decision to switch the tie to Highbury for financial reasons was understandable, however, and Boro could at least say they had tackled some of the world's best players as Arsenal fielded the likes of Robert Pires in their starting line-up.

BBC: Arsenal cruise through

Saints, who won all six of their group games, may have to switch their last-eight tie from Franklin's Gardens to a stadium with a minimum 15, 000 capacity.

BBC: Northampton to face Ulster in Heineken Cup last eight