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首页> 美国政府科技报告 >Control of High Voltage Discharges in Vacuum Insulated Cryocables. Stage 2
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Control of High Voltage Discharges in Vacuum Insulated Cryocables. Stage 2

机译：真空绝缘冷变管中高压放电的控制。第2阶段

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Progress is reported on a project dealing with discharges and other ionic effects produced by the 60 Hz magnetic field in the high voltage vacuum insulation of cryocables. A short loop of coaxial cryocable equipped with voltage and current transformers for circulation of 250 MW of power was built to simulate interaction of the magnetic field encircling the current-carrying conductor. The design of the loop is described and illustrated together with capacitance and heat leak measurement and design options. The loop, which is installed in the M.I.T. cryocable laboratory, was designed to increase the demonstrated single-phase cryocable transmission capability six-fold. Preliminary experiments have been conducted on the interaction of axial dc magnetic fields with 60 Hz and dc radial electric fields. Results of these preliminary experiments are summarized, including the passage of 200 MW of power around the short coaxial cryocable loop. This is over five times as much power as previously achieved with cryocables and almost three times the single-phase capability of a conventional 138 kV pipe-type cable.

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