Study on Influence of Ultra-High Voltage Direct Current Transmission on System Security and Stability
As an advanced power transmission method,ultra-high voltage direct current transmission technology has been widely used in the world.This paper introduces the basic principle of ultra-high voltage direct current transmission in detail,including the ability to realize long-distance and large-capacity power transmission by increasing transmission voltage to reduce line current and loss.This paper analyzes the research necessity of this technology,and points out its key role in modern power system,especially its contribution to improving the economy and reliability of power grid.In addition,this paper discusses the characteristics of ultra-high voltage direct current transmission technology,such as reducing capacitance effect and improving system stability,as well as measures to deal with different fault situations,such as unipolar blocking fault and bipolar blocking fault.Through the analysis of practical cases,the practical benefits of ultra-high voltage direct current transmission technology in ensuring the stable operation of power system and promoting the utilization of renewable energy are demonstrated.
ultra-high voltagedirect current transmissionsystem safety
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