Foreword for the special section on AC and DC ultra high voltage technologies

摘要

A LONG with the rapid development of its economy, China is facing serious challenges in energy resources. Coal, hydro, inland wind and solar power are mainly distributed in the West and North of China. However, power demand centers locate in Eastern and Central China. Distance between energy bases and load centers ranges from 800 km to 3000 km. China needs to develop remote and bulk power transmission to optimize power allocation.