Key Technologies of Lightning Detection and Protection in China Power Grid

Abstract

This paper reviews the development of lightning detection and protection technology in China.And six key technologies of lightning detection and protection required to be studied urgently are brought forward,including the direct measurement of lightning current,spreading characteristics of lightning radiation electromagnetic field,full digitalization lightning detection,lightning parameter statistics,difference analysis method for lightning protection,and lightning shielding simulation test.The purposes,significance,and thoughts to carry out studies on these technologies are discussed in detail.It is pointed out that the studies of these six key technologies will obtain the directly measured lightning current parameters which are very rare all over the world,will improve the detection efficiency and location precision of the lightning diction network of China,and will obtain the lightning activity characteristics in different regions of China.The study will also evaluate the lightning protection performance of transmission lines more exactly,and will provide an efficient way to scientifically estimate the shielding efficiencies of the lightning shielding measures.Moreover,the study results will provide the basic parameters for the formulation and revision of concerned lightning protection standards of China.