通过HVDC线路分段降低欧洲电网大面积停电风险

The utilization of high-voltage direct current(HVDC)lines for the segmentation of the European power grid has been demonstrated to be a highly effective strategy for the mitigation of the risk of cascading blackouts.In this study,an accurate and efficient method for determining the optimal pow-er flow through HVDC lines is presented,with the objective of minimizing load shedding.The proposed method is applied to two distinct scenarios:first,the segmentation of the power grid along the Pyrenees,with the objective of segmenting the Iberian Peninsula from the rest of Europe;and second,the segmenta-tion of the power grid into Eastern and Western Europe,ap-proximately in half.In both scenarios,the method effectively re-duces the size of blackouts impacting both sides of the HVDC lines,resulting in a 46％and 67％reduction in total blackout risk,respectively.Furthermore,we have estimated the cost sav-ings from risk reduction and the expenses associated with con-verting conventional lines to HVDC lines.Our findings indicate that segmenting the European power grid with HVDC lines is economically viable,particularly for segmenting the Iberian Peninsula,due to its favorable cost-risk reduction ratio.