求翻译：表5给出了最先越限的暂稳极限与N-1热稳极限之间，在方向1下，系统承担不同失稳风险时断面1的可用输电能力，不确定性因素只考虑未来1小时故障发生的概率。由该表可知，当断面1传输功率提高397MW时可确保系统稳定，继续增加功率则会承担一定的失稳风险，当传输功率达到系统N-1热稳极限时，失稳概率接近1%，对于所研究的短时段风险较高。可根据预先制定的安全稳定导则，选取合适的概率用以确定失稳风险在可接受范围内的ATC，本系统取0.001，得到断面1可用输电能力为417MW。是什么意思？

Table 5 shows the first transient stability limit of the more limited and N-1 thermal stability limit, between the direction of 1, the system bear the risk of instability when different cross-section 1 of the available transmission capacity, to consider only the future uncertainty 1 hours of the pro

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Table 5 has given first the overstep temporarily between the steady limit and the N-1 hot steady limit, when the direction 1, the system undertakes the different

Table 5 shows the first out of bounds between transient stability limit and N-1 of thermal stable limit, under the direction of 1, system instability risks of different section 1 of the available transfer capability, uncertainty factors considered only 1 hour failure probability of occurrence in the