Journal of Electrical Engineering and Automation

The global energy structure is undergoing profound adjustments, and there is an urgent need for optimized allocation of power resources across regions. Long-distance high-capacity transmission has become crucial for energy interconnection. New flexible DC transmission technology, with its unique advantages, is beginning to make a mark in the field of power transmission. This article systematically evaluates the actual performance of this technology in long-distance high-capacity power transmission from four dimensions: transmission capacity, energy loss, operational stability, and economic efficiency. The results show that this technology significantly enhances transmission capability, reduces energy consumption, and improves system stability, providing important support for the modernization of power systems and efficient energy delivery.

Flexible DC transmission; Long-distance transmission; Large capacity; Efficiency evaluation; Power system