“Pre-construction HVAC Interference Predictive Modeling, Mitigation Installation and Follow Up Testing on a 130 mile long 345kV Transmission Line/Crude Pipeline Collocation”

This paper presents data and analysis from a case history involving the mitigation of AC interference on multiple crude pipelines in a 130-mile long collocation with a new 500kV HVAC power transmission line.  The configuration was significantly more complicated than the stated capacity of PCRI predictive modeling software.  However, with some compromises predictive modeling using the PRCI software provided useful results and allowed for the design of a successful mitigation system.  Actual field data is compared to predicted AC interference levels and the mitigation system details and operating characteristics are presented.