NDLI: General light and power supply of Chicago

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Year : 1930 Volume : 49

Year : 1929 Volume : 48

Year : 1928 Volume : 47

Year : 1927 Volume : 46

Year : 1926 Volume : 45

Year : 1925 Volume : 44

Year : 1924 Volume : 43

Table of contents

Current electrical articles published by other societies

New type of convention proves a success

A new type of single-phase motor

The application of the saturated-core reactor and regulator

General light and power supply of Chicago

New type of high-tension network: An interconnecting system for the supply of electric power over large areas

Notes on mine hoisting

Automatic substations for supplying 1500 volts: Direct current to Suburban railways

Insulation tests of transformers as influenced by time and frequency

Application of automatic substations to central: Station service in metropolitan districts

Hydroelectric practises and equipment on the Pacific Coast

Tooth pulsation in rotating machines

Operating problems of the railroads: Addresses and discussion at transportation meeting held at Mid-Winter Convention of A. I. E. E., Philadelphia, Pa., afternoon of February 5, 1924

Address by J.E. Crawford

Discussion [of Address by J.E. Crawford]

Lightning arrester experience in California: Particularly as regards the Southern California Edison company's system

Illumination items: The increasing importance of light in industry

Re-lighting the gas station

Floodlighting a Church at night

Annual convention at Edgewater beach, Chicago

The Pasadena convention and excursion trip

Northeastern district holds meeting of high character

International mathematical congress

Annual meeting of N.Y. Electrical society

1924 Commission of Washington award to Arthur N. Talbot

Engineering Societies Library

Bibliography on ventilation and temperature rise in electrical machines [advertisement]

Manufacturers contribute to the engineering library

Personal mention

Addresses wanted

Past section and branch meetings

Engineering societies employment service: Positions open

Membership - Applications, elections, transfers, etc.

Officers of the A.I.E.E.

Local Honorary secretaries

A.I.E.E. committees

A.I.E.E. representation

List of sections

List of branches

Digest of current industrial news

General light and power supply of Chicago

Content Provider	IEEE Xplore Digital Library
Author	Armbrust, G. M. Jackson, J. B.
Copyright Year	1924
Abstract	The development of a distribution system is largely determined by the load density and Us rate of change. The following is a discussion of these factors and their influence on the Chicago distribution system: The d-c. system which supplies the central part of the city includes an area of about one sq. mi. in which the load is expected to reach 200,000 kw. in 20 years. This would economically require substation supply of about 10 substations of 25,000 kw. each. Surrounding the small d-c. area the general light and power supply over the city is by means of 60-cycle, 4,000-volt circuits, except for the larger industrial loads which are supplied from 12,000-volt lines. The load density of the greater part of the 4,000-volt system is about 4,000 kv-a. per square mile, and the economical supply would be from 7,000 kv-a. remote controlled substations spaced about 1.3 miles. The maximum density of load on this system is 10,000 kv-a. which would require 10,000-kv-a. substations. Calculations indicate that, with increasing load densities, the economy of this intermediate distribution voltage disappears, and in the ultimate development higher distribution voltages are necessary.
Starting Page	608
Ending Page	609
Page Count	2
File Size	576148
File Format	PDF
ISSN	00959804
Volume Number	43
Issue Number	7
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1924-01-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article

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