NDLI: Prime-mover speed governors for interconnected systems

Content Provider	IEEE Xplore Digital Library
Author	Caughey, R. J. McClure, J. B.
Copyright Year	1931
Abstract	System operating requirements, from the standpoint of frequency and tie-line loading, are continually becoming more rigorous and receiving more widespread attention. Supplementary controls have been developed to assist in the solution of these problems — but the speed governors of the prime movers still constitute the backbone of system control. This paper outlines the general problems encountered; gives definitions of terms for both steam and hydro governors and discusses the performance characteristics of these two general classes of prime movers. As a result of discussions with several operating groups certain definite conclusions were reached for prime-mover governor characteristics on the larger systems, viz., dead band should be as small as practicable; uniform incremental regulation desirable; adjustable regulation not necessary; similar rates of response not necessary and accurate response to supplementary control desirable. These conclusions are supported by the analytical work presented in the companion paper.⁷ A summary of the reasoning supporting these conclusions under the subjects of stability, dead band, regulation, response, short circuits, and tie-line swings is included. Introduction During the past several years the interconnected power system has come into being and has expanded rapidly to the point where some of these systems now comprise several million kilovolt-amperes of connected capacity. Many problems have appeared and of these, two important and closely associated ones, speed and load control, have continued to receive increased attention. In most cases large portions of these systems are tied together by tie lines of relatively small capacity and as a result power flow across the ties must be carefully controlled. Frequency control is being widely used in varying degrees of refinement and automatic tie-line control is being used in more and more locations.^1,12,13,14 The control associated with these two problems is usually applied in the form of relatively slow supplementary adjustments to the normal action of the basic speed governors, which still constitute the backbone of system control. It is logical, then, as system operation becomes more refined and the requirements more rigorous, that more attention^2,3,4 be given to the characteristics of the speed governing mechanisms. During this same period special instruments^8,9,10 for accurately measuring small changes in system frequency have been developed and these instruments have been used to advantage by several groups in analyzing governor performance.
Starting Page	147
Ending Page	150
Page Count	4
File Size	1071800
File Format	PDF
ISSN	00959197
Volume Number	60
Issue Number	4
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1941-04-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Valves Steady-state Turbines Oscillators Circuit stability Frequency control Transient analysis
Content Type	Text
Resource Type	Article

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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
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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