NDLI: The Frequencies of Natural Power Oscillations in Interconnected Generating and Distribution Systems

Content Provider	IEEE Xplore Digital Library
Author	Rudenberg, Reinhold
Copyright Year	1884
Abstract	Electric generating and distribution systems are capable of performing natural oscillations of frequency and of power, superposed upon the ordinary operation and sometimes disturbing the regular behavior of the system or its parts. These oscillations are due to the interlinked cooperation of the prime movers with their speed-governing mechanisms, the synchronous generators, the ramified network, and the numerous induction motors, and similar power consumers. Since most of the machines and network branches usually are different in size and in individual design, a multitude of natural oscillations will develop, the frequency spectrum of which can be divided into three groups. In perfect condition of the system, a single very low frequency develops, which is determined by the inherent properties of all speed governors and servomotors together, and by the inertias of the rotating masses of all the generators and motors together. This joint natural oscillation has a period around 10 to 20 seconds and causes an inphase movement of all mechanical parts of the system, which can be of considerable magnitude, while the electric power may oscillate in phase opposition within the various parts of the system. The next group of frequencies contains as many natural oscillations as there are different synchronous machines in the system and is defined by the faster electromechanical oscillations occurring between each synchronous generator and the entirety of all the other synchronous and induction machines.
Starting Page	791
Ending Page	803
Page Count	13
File Size	3115250
File Format	PDF
ISSN	00963860
Volume Number	62
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1943-12-01
Publisher Place	New York, U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Power system interconnection Power generation Fluctuations Steady-state Synchronous motors Synchronous generators Induction motors Induction generators Valves
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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