Mechanism And Experimentation Studies Of Lightning Protection On Secondary Equipments In Power Systems

This dissertation describes the EMC on the secondary cables in power systems when the power plant and substation encounters with the lightning strike and static-induced effects generated by lightning clouds.The dissertation is composed of three part. In the first, we carried out experiment with kinds of the secondary cables (including static-induced and lightning strike experiment). We compared with the results of experiment.Finding out suitable model of secondary cables, we analysed their inducing discipline and trend.According to the experiment and theory analysis evaluate the effect and feasibility.To reduce induced voltage on cables it's the first time this dissertation adopt the distributary methods which a branch grounding wire flows away from the main grounding wires. And find out a optimization parameters of distributary coefficient and connection distance.