Cable Failures And Protective Relay Operation Associated With Nasa Glenn's 10x10 Supersonic Wind Tunnel
by Nasa Technical Reports Server (ntrs)
2021-01-13 22:14:40
Cable Failures And Protective Relay Operation Associated With Nasa Glenn's 10x10 Supersonic Wind Tunnel
by Nasa Technical Reports Server (ntrs)
2021-01-13 22:14:40
During a two-month period, NASA Glenn Research Center in Cleveland, Ohio experienced two failures of high voltage cables associated with its 10 x 10 supersonic wind tunnel (SWT) and a ground problem from the local utility. This paper addresses these ...
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During a two-month period, NASA Glenn Research Center in Cleveland, Ohio experienced two failures of high voltage cables associated with its 10 x 10 supersonic wind tunnel (SWT) and a ground problem from the local utility. This paper addresses these problems and associated relay operations. The following incidents are reviewed: 1) Failure of 6.9kV transformer drive cable and operation of protective relaying; 2) Detection of problem on First Energy's 138kV utility power system with new microprocessor based relays; 3) Failure of 138kV transformer primary cable and operation of protective relaying. All three incidents were associated with transformer K10, one of four transformers feeding the 10 x 10 SWT complex.
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