Research On Impact Of Ground Electrode Current For Boro Converter Station On Huizhou Power Grid

In order to implement the national "west to east," the strategies to achieve the optimum allocation of resources and energy and the promotion of sustainable economic development of Eastern, China Southern Power Grid over the years, achieved with many domestic provinces, Hong Kong's network, "West to East" The main grid and the provinces power grid structures have been strengthened. As the "Plan" one of the key projects, three of the China Southern Power Grid to achieve wide DC power non-synchronous interconnection with the Central China, China Southern Power Grid in the country to form the first long-distance, high-capacity, high pressure transmission, AC and DC parallel operation large power grids.But with the expansion of power, bringing huge economic benefits at the same time, making the network operation and management of more complex, especially in broad day, your wide, three wide, four DC while placement of Yunnan to Guangdong, but also to the grid has brought the safe operation of many new technical problems. This paper studies the Boro current converter station grounding grid of Huizhou, including the actual number of substation in Huizhou DC system under various operation flowing through the main transformer neutral point current value, in-depth analysis of the measured data, the research base the study was limited by the DC current transformer neutral technical measures, technical solutions in Huizhou HVDC grounding grid into the earth current governance projects in the applications. The Huizhou power grid safety protection of the work of great significance.