求翻译：1) 本次计算中，断面1和断面2的N-1热稳极限均高于暂稳极限，各自输电能力的主要限制条件相同，都是A区受电站a1向区内的送出线路故障跳闸时造成A区部分发电机组失去暂态稳定。从实际电网的分析可知，当断面1传输功率增加时，a1站的运行条件也随之恶化，限制B区向A区的送出功率；而a1站送出侧500KV线路与220KV线路形成电磁环网，发生故障或线路无故障跳闸后，传输功率大量转移，极易导致系统失稳，成为电网的薄弱环节，限制了断面2的功率增长。是什么意思？

1) The calculation in section 1 and section 2 of the N-1 thermal stability limits are higher than the transient stability limit, the respective transmission capacity of the main constraints the same, are A, the area affected by power plant sent to the a1 line fault tripping Part A, caused by loss of

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1) In this computation, the cross section 1 and the cross section 2 N-1 hot steady limits are higher than temporarily the steady limit, respective transmitting capacity main limiting condition is same, all is the A area sends out to the area in when the line fault trip is created power plant a1 the

1) in this calculation, section 1 and section 2 of the N-1 thermal stability limit is higher than the provisional stability limit, their main restricted conditions the same transmission capacity are the A1 area a power station in the District of transmission line fault some generators tripping cause