This project involved shunt reactor studies and protection coordination studies for 400 kV grid substations, with the objective of enhancing system reliability by evaluating performance and stability of extra high voltage transmission line protection and reclosing schemes involving shunt reactors. The study included insulation coordination, verification of transient recovery voltage limits and specification of minimum dead times for single phase auto reclosing schemes. Mitigation measures were proposed to reduce breaker stress and prevent equipment damage, including point on wave switching. Comprehensive ferro resonance assessments were also carried out, along with recommendations to avoid adverse resonance conditions.

TCE's Scope