NDLI: The space charge that surrounds a conductor in corona

Please wait, while we are loading the content...

Year : 1930 Volume : 49

Year : 1929 Volume : 48

Year : 1928 Volume : 47

Year : 1927 Volume : 46

Current electrical articles published by other societies

A war memorial for American engineers

Abridgment of railway inclined catenary standardized design

Abridgment of the relation between frequency and spark-over: Voltage in a spheregap voltmeter

Abridgment of methods used in investigating corona loss by means of the cathode ray oscillograph

Abridgment of synchronous condensers

Research: Annual report of the committee on research

Synchronous machines — III: Torque-angle characteristics under transient conditions

High-voltage oil circuit breakers for transmission networks

Iron and steel industry: Annual report of committee on applications to iron and steel production

The space charge that surrounds a conductor in corona

A note on the unbalancing factor of three-phase systems

Abridgment of lightning protection for the oil industry

Abridgment of characteristics of interconnected power systems: As affected by transformer ratio control

Abridgment of a theory of imperfect solid dielectrics

Abridgment of printing telegraphs on non-loaded ocean cables

Abridgment of graphical determination of magnetic fields theoretical considerations

Abridgment of the law of corona and dielectric strength of air — IV: The mechanism of corona formation and loss

Heating of windings determined from tests of short duration

The electric arc and its function in the new welding processes

Standard grades for crude rubber

The interpolar fields of saturated magnetic circuits

Prospective legislation for 70th Congress

Germany produces new alloy

Abridgment of tandem system of handling short-haul toll calls in and about Los Angeles

Southeast England electricity scheme

Abridgment of static stability limits and the intermediate condenser station

Railroad yard lighting

Electric welding: Report of the committee on electric welding

Abridgment of combined light and power systems for A-C. secondary networks

Discussion at annual convention

Report of committee on research

Papers on overhead contact systems

Report of committee on production and application of light

Power generation

Power transmission and distribution

Applications to mining work

An investigation of corona loss: Law of corona and dielectric strength

Recent investigations of transmission-line operation

Discussion at Pittsfield meeting: Quantitative determination of radio-receiver performance

Electrolytic corrosion measures

Illumination items: New Mazda street railway cutout lamps

1928 Winter convention promises timely program

Fall meeting of affilited engineering society sections of Virginia

Future section meetings

“Science luncheon” of the American Institute

Fiftieth anniversary of Philadelphia engineers club

Radio engineers' 1928 convention

Sixth power show

25th Annual convention of American road builders' association

New Spanish translation available

Chicago power show

Centennial of the Institution of Civil engineers

Provisions of radio treaty being completed

Doctor coolidge awarded Hughes medal

Engineering foundation: Specific instances of engineering research

Engineers predict future of New York

Prize awards for safety promotion

National research council: Activity in industrial research

Volt a memorial fellowship

Personal mention

Past section meetings

A.I.E.E. student activities

Branch meetings

Engineering societies library

Engineering societies employment service

Membership - Applications, elections, transfers, etc.

Officers of A.I.E.E. 1926 - 1927

List of sections

List of branches

Index to Volume XLVI: January 1 to December 31, 1927

Digest of current industrial news

Year : 1926 Volume : 45

Year : 1925 Volume : 44

Year : 1924 Volume : 43

The space charge that surrounds a conductor in corona

Content Provider	IEEE Xplore Digital Library
Author	Carroll, Joseph S. Lusignan, Joseph T.
Copyright Year	1924
Abstract	A qualitative analysis of the nature of the space charge created about a conductor in corona, particularly with respect to relative magnitudes and polarities, rather than actual quantitative measurement, is described here. This work was the principal work on corona during the past year in the Ryan High-Voltage Laboratory. In tests with the arrangements of a wire and a plane, and of a wire and a cylinder, a decided rectifying effect was discernible in the space about the conductor in corona, in that that region was built up to a unidirectional potential above ground, the magnitude and polarity of this potential depending on the voltage applied. In both of these set-ups, this net rectification, which is evidently caused by some differential action entering into the ionization process, was of a positive sign at the start of corona, but changed over to negative as the voltage was raised. In a test made on two 1.1-in. diameter, parallel concentric strand copper conductors, 10 ft. apart, the space between them was found to have assumed a potential above ground when the conductors were in corona, the sign of this charge being negative at first, and then positive as the voltage increased. Tests were also carried out on a single brush, and on a rod fitted with “artificial” brushes. In a corona-loss curve taken on the two cable conductors it was found that at the same voltage at which the sign of the rectified space charge had reversed, there was a “break” in the curve. This “break” corresponded to the point above which Peek's quadratic law of corona holds, and below which he has suggested the entrance of a probability relation. A final field test was made at a span of the 220-kv. Pit River Lines of the Pacific Gas and Electric Co., in order to ascertain the magnitude and polarity of the charge built up about a high-voltage line in service. A negative polarity was found to be present as far down as 30 ft. below the conductors. Although the voltage was raised to 260 kv., the charge remained negative, indicating that the line at its normal 220-kv. potential was operating at a point on the corona-loss curve appreciably below that where the break occurs in the curve.
Starting Page	1350
Ending Page	1357
Page Count	8
File Size	1785639
File Format	PDF
ISSN	00959804
Volume Number	46
Issue Number	12
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1927-01-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in