Abstract :
The system aspects of the Nelson River HVdc bipole- two transmission is described. Extension of Manitoba´s HVdc system is generally discussed and the paper covers in some detail the system studies, results, criteria, and philosophies related to the planning and overall specification of bipole-two. Frequent reference is made to bipole-one design and experience which effected the bipole-two requirements and design. The information presented is valuable to utility planners considering feasibility and specification of HVdc transmission.