Current Status and Development of Fault Current Limiting Technology for DC Transmission Network

People show a great interest in building HVDC transmission grid because compare to traditional AC transmission grid, DC gird is more suitable in long distance power transmission. However, behaviors of DC system in some aspects is different as which in AC system, therefore study of these new behaviors is become a popular topic in recent years. Among these problems, fault current limitation is one of the most important issues. This paper provides an overview on fault current limitation in flexible HVDC grid, and possible solutions will be in the end page.