SVC-assisted power factor optimization: A dual-benefit strategy for grid efficiency and pipeline integrity management

This study pioneers a proactive source-control strategy for mitigating electromagnetic interference (EMI) on buried pipelines through Static Var Compensator (SVC)-assisted power factor optimization of adjacent high-voltage transmission lines. An integrated framework couples electromagnetic modeling with electrochemical validation, establishing a quantitative correlation between induced current density (J ind ) and corrosion rates of API X70 steel (0.119→0.404 mm/year as J ind increases 0→200 A/m²). For a 400 kV, 900 MW transmission line, the iterative optimization algorithm achieves an optimal power factor of 0.966, reducing J ind from 24.14 to 19.99 A/m² maintaining compliance with the 20 A/m² safety thresho ldwhile simultaneously providing 434 MVAR reactive power savings. These results demonstrate three key contributions: (1) a novel cross-infrastructure application of SVC technology beyond traditional economic optimization, (2) a validated quantitative J ind -corrosion relationship enabling risk assessment, and (3) a dual-benefit solution that enhances grid efficiency while safeguarding pipeline integrity in shared energy corridors.