Discussion on “operation of two alternating-current stations through parallel circuits and the distribution of load and wattless currents between them” (Welsh), Portland, Ore., April 18, 1912. (see proceedings for March, 1912)

Waldo V. Lyon (by letter): I gather from this paper on parallel operation that Mr. Welsh uses the simple method of analysis which assumes that each alternator has a constant synchronous reactance. The results obtained by this method, while useful, are often at considerable variance with those met with in practise.