from：China Southern Power Griddate：2015-04-28
EHV Company’s Annual Conference of 2014 HVDC Analysis disclosed that 4 DC lines including Tianguang, Gaozhao, Xing’an, and Chusui operated and maintained by CSG kept their leading positions nationwide in terms of energy availability. Two projects, Puqiao DC and Niucong DC projects which were recently put in operation were not included in calculation.
It is understood that in 2014, the average value of energy availability of China’s EHVDC and UHVDC line was 93.84% and 92.289% respectively. While the energy availability of Tianguang, Gaozhao, Xing’an and Chusui DC was 98.13%, 98.79%, 96.49% and 95.25% respectively, all higher than the national average.
The trend of energy availability change during the past 5 years indicates stable energy availability for all lines. It is worth mentioning that the energy availability of Tianguang DC line hits a 5-year high, which reflects that after conducting renovation of control and protection, Tianguang DC line is now in a stage of stable operation.
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