Power Grid Corporation of India Ltd. (POWERGRID) is constructing ±800kV, 3000MW HVDC Champa – Kurukshetra Transmission link with Dedicated Metallic Return (DMR) instead of Conventional Ground Return. The HVDC Transmission line is app. 1305 kms long and both the pole and ground return conductors are running on the same tower. This will be the first ± 800KV HVDC Project having DMR conductor running on the same tower carrying the pole Conductor. Provision is kept to upgrade above HVDC Bipole to 6000 MW at a later date with increased power transfer requirement. The proposed scheme shall facilitate strengthening of North-West transmission corridor for dispersal of power with reliability and security. The paper elaborates the various challenges in the conception and design pertaining to the above said project from user's perspective. The major issues discussed in the paper includes: Salient parameters of the project Various Operating Modes, with respect to conductor/DMR configuration DC Switches & DMR Fault Detection Effect of Parallel AC Line on DMR Selection of DMR Conductor and Configuration of conductor in Tower Corona performance of DMR and ground wire
Dedicated Metallic Return (DMR), Operating Modes, Parellel AC Line, Transfer Surge
