求翻译：主要受A区中部某变电站的影响，该站是区内多条传输通道的主要集散点，成为全网N-1热稳定和暂态稳定最为薄弱的环节，因此断面1的可用输电能力难以进一步提高。是什么意思？

A central part of a major substation by the impact of the station area a number of transmission channels is the main distribution point for a whole network N-1 thermal stability and transient stability weakest link, so the cross-section 1 of the available transmission capacity is difficult to furthe

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Mainly the A area middle some transformer substation influence, this station is in the area the multi-strip transmits the channel main nodal point, becomes the entire net N-1 thermally stable and the transition condition stable weakest link, therefore cross section 1 available transmitting capacity

Mainly under the influence of a area of a transformer substation in Central, the station is the main nodal point of the various transmission channels in the region, became the whole network N-1 thermal stability and transient stability of the weakest link, section 1 of the available transfer capabil

A central part of a major substation by the impact of the station area a number of transmission channels is the main distribution point for a whole network N-1 thermal stability and transient stability weakest link, so the cross-section 1 of the available transmission capacity is difficult to furthe