New Gold – Rainy River Mine Power System Study

Project Summary

Our team conducted a comprehensive power system study for the mine site's electrical distribution system, spanning from the 230kV level down to the 600/347 V distribution. The scope of work included:

1. A detailed on-site data collection to gather the required information to model the Rainy River Mine electrical system from the 230kV level down to the 600/347V level.
2. Protective device coordination study
   • Analyzed existing overcurrent protection settings and compared against industry best practices and applicable standards for protection systems. 
   • Provided recommended overcurrent settings for the protective devices based on the applicable industry standards and best practices (e.g., OESC, IEEE/CSA, etc.).
   • Provided existing and recommended time current curves (TCCs). 
   • Provide existing and recommended overcurrent protection settings in a tabular format. 
3. Arc flash incident energy analysis  
   • Performed an arc flash incident energy analysis as per CSA Z462 and IEEE 1584 for the electrical distribution down to the 600/347V level.
   • Provided a list of recommended settings to reduce incident energy levels below 12 cal/cm2.
   • Installed arc flash adhesive warning labels.