Transient shunt reactor dimensioning for bulk power transmission systems during normal and faulty network conditions

This paper presents an analysis of a 500 kV bulk power transmission system and the dimensioning of proper shunt reactors to be applied under steady state and transient aspects in particular. Therefore, the behavior of single-pole auto-reclosing under line-to-ground fault conditions is analyzed. Hence is described the necessity and influence of factors such as phase and neutral reactors, capacitive and inductive couplings on the extinction of secondary arc. Those are investigated in order to justify the feasibility of single-pole auto-reclosing. A practical example of the system is developed with respect to an investigation of the impact of neutral reactors. The considerations have been firstly done analytically and verified subsequently based on transient simulations using ATP/EMTP.