Transmission Experience of the Public Service Company of Colorado

The 100,000-volt transmission lines of the Public Service Company of Colorado, which were completed in 1909, extentded from the Shoshone hydro plant on the Colorado River across the Continental Divide to Denver and represent pioneering in high-voltage transmission at high altitudes. This combination of factors, coupled with a rapid expansion of the whole system in recent years called for the satisfactory solution of many problems. The paper describes the system in a general way, and outlines some of the more salient operating difficulties that have arisen from time to time as well as their remedies. Brief mention is also made of the method of load dispatching.