Proceedings Forty-Sixth Research Session Held at Trivandrum, Kerala on 16-19 November, 1977. Volume VI--Power: Technical Papers on Substations, Protection, and General

摘要

;Contents: Recent trends in the design and development of EHV/UHV substation equipment; E.H.V. mini substations; Substation equipment insulation reduction and insulation coordination for the voltage range 66 kV-220 kV for earthed systems; Selection of the number and location of lightning arresters for multi circuit substations; Potential rise on grounding grids at substations during fault conditions and improvement from remedial measures; Control of ground potential gradients at modern high voltage substations; Insulating oil--importance and significance of tests; Expriences with dissolved gas analysis for large power transformers in Tata electric companies; Problems connected with maintenance of pneumo-hydraulic control mechanisms in oil minimum circuit breakers; A new relay with linear characteristic for the protection of high voltage transmission lines; High speed protection of power transformers using analogue cross-correlation techniques; Protection of large size steam turbine generators; Multipurpose solid state voltage sensor and its applications in protective schemes; Bridging the gap between load demand and installed capacity--ways and means; Protection of H. T. and L. T. distribution lines and distribution transformers; and Reliability data base for power systems.