Transmission Experience of the Public Service Company of Colorado

Coover, M. S.; Hardaway, W. D.

doi:10.1109/t-aiee.1928.5055145

Trans. Am. Inst. Electr. Eng.

1928

DOI: 10.1109/t-aiee.1928.5055145

|View full text |Cite

Transmission Experience of the Public Service Company of Colorado

M. S. Coover¹,

W. D. Hardaway

Abstract: Synopsis.-The 100,000-volt transmission lines of the Public cent years called for the satisfactory solution of many problems. The Service Company of Colorado, which were completed i7 1909, paper describes the system in a general way, and outlines some of the extentded from the Shoshone hydro plant on the Colorado River .more salient operating difficulties that have arisen from time to time across the Continental Divide to Denver and represent pioneering in as well as their remedies. Brief mention is also made … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1935

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

Surge Currents in Protective Devices

Opsahl

1935

Trans. Am. Inst. Electr. Eng.

View full text Add to dashboard Cite

ties, more definite information than that ascertain-recorded by several successive hourly tests. About able by the usual indicating and recording instruments 30 per cent of the failures have been detected on will be available in the future. these tests. At monthly intervals a complete check is made of MAINTENANCE all tubes by means of a portable test set. At the same time all 132 kv circuit breakers are tripped by The carrier equipment is checked hourly by the the relays to insure that all electrical and mechanical substation operators and readings of carrier signal devices are in proper working condition. strength noted on ammeters connected in each reAt penrodic intervals a complete calibration test ceiver relay circuit. The test is quite simple and is made of all line protective relays. As the time can be completed in a very short interval, since it settings are very short and the selectivity between requires only the pressing of a button to transmit the vanrous relays is in the order of a few cycles, special signal, and the reading of an ammeter.high speed timing devices are used for this purpose. A code signal is used to identify the line being At Pleasant Valley the automatic oscillograph is tested, and by means of a prearranged schedule, the used for checking the timing of the relays after they initiating station transmits a warning signal and re-have been individually calibrated. The record ceives a "ready" signal by the receiving substation. shows the performance of the combined relay inSignals of approximately 2 seconds' duration are then stallation, including the time margins between starttransmitted by the initiating station and answered ing of the carrier signal and individual relay tripping by the receiving station, thus permitting a check of and resetting operations. signal strength of each circuit at each substation.At other substations an electronic timer is used Poor condition of any of the tubes is usually in-for checking the calibration of the individual relay dicated by a gradual decrease in signal strength as units.

show abstract

Surge Currents in Protective Devices

Opsahl

1935

Trans. Am. Inst. Electr. Eng.

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Transmission Experience of the Public Service Company of Colorado

Cited by 1 publication

References 1 publication

Surge Currents in Protective Devices

Surge Currents in Protective Devices

Contact Info

Product

Resources

About