Evaluation of HVDC cables for the St. Lawrence river crossing of Hydro-Quebec´s 500 kV DC line. II. Cable testing facility for dielectric and accelerated aging

For pt.I see ibid., p.101-9 (1991). The new cable testing facility at IREQ for long-term accelerated aging tests on HV cables is described. This test facility was required as part of an extensive program to evaluate the high-voltage cables for the river crossing of Hydro-Quebec´s new transmission lines rated 800 kV AC and ±500 kV DC. The first application was for the evaluation of self-contained oil-filled (SCOF) cables for the St. Lawrence river crossing of the ±500 kV Quebec-New England HVDC power transmission system. The specific dielectric constraints resulting from the insertion of a short length of cable into a long line and the circuits developed for the special tests, which reproduce the specific cable test conditions, are described