Excerpt from Investigation of Some Trouble in the Generating System of the Commonwealth Edison Chicago, 1919 My dear Mr. Insull: Enclosed I send you report of investigation of. some operating troubles in the generating system of the Commonwealth Edison Company, during 1919, with some recommendations. I am sending copies of the report to Mr. L. Ferguson and to Mr. R. F. Schuchardt. I regret that in some respects the report is not as final and conclusive as I like to see it, but during the years of successful operation since the installation of the protective reactances, your system has grown and changed so much, and while I have received very complete and extremely satisfactory information and data from your engineers, it necessarily is not possible for me to be as fully familiar with the system, as I was once, but I hope that I shall now be able to keep in closer touch with it. Some of my recommendations therefore are more general, and require further study by the operating engineers, and I shall be glad to co-operate therein, and expect to be in Chicago again in January. More particularly this applies to: - 1.) The installation of power limiting reactors between the Northwest Station and Fisk Street, which appears to me extremely desirable to eliminate the excessive interference between these stations in case of trouble in one of them. As, however, the tie cables between these stations are also used as feeder cables for intermediate substations, a study by your engineers, in which I shall be glad to co-operate, is necessary to devise an arrangement of installation of reactors, which would not interfere with the economic use of tie cables of substation feeder cables. 2.) The substations were originally operated by separate feeders, but the need of using the feeder cables and apparatus in the most economical manner has led to tying substations together on the same feeder, which necessarily increases the interference between substations and between generating stations

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Investigation of Some Trouble in the Generating System of the Commonwealth Edison Chicago, 1919 Classic Reprint

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