2009•Power System TechnologyRequires access

Statistics and Analysis on Reliability of HVDC Power Transmission Systems of State Grid Corporation of China

YU Xin-qiang

Abstract

Reliability level of HVDC power transmission systems becomes an important factor impacting entire power grid.The author analyzes the reliability of HVDC power transmission systems owned by State Grid Corp.of China since 2003 in respect of forced outage times,forced energy unavailability,scheduled energy unavailability and energy utilization efficiency.Different reliability indices of HVDC power transmission system interact one another,thus to implement the maximization of property benefit of the power grid it is necessary to build a scientific and reasonable reliability evaluation system.The results of analysis on reliability indices of HVDC power transmission systems home and abroad show that the reliability level of HVDC power transmission systems owned by State Power Grid Corp.of China is in the forefront in the world.

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Key concepts: Unavailability, Reliability engineering, Reliability (semiconductor), Electric power system, Power transmission, Electric power transmission, Engineering, Transmission (telecommunications)