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The application of large cross-section conductor can effectively reduce the current density and realize the strategy of energy saving & consumption reduction. This paper introduces the large cross-section conductor (900 mm2) applied in the ±800 kV Jinping-Sunan UHV DC project, and focuses on the analysis of factors concerning the conductor’s engineering application. The factors include structure design and manufacturing of conductor, fittings, engineering technology, etc. The conclusion is finally drawn: it is feasible and necessary to design a four-layer aluminum strand for conductors with the dimension of 900 mm2, by which the productivity has the expanding potential; there are no obstacles to the design and manufacturing of fittings; the releasing scheme should be further optimized; the existing traction and stretching machines can be used and the pulley and card conductor should be developed. It also indicates that large cross-section conductor (900 mm2) is expected to have a broad application. |
