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Control of Tie-Line Power Swings

1942; Institute of Electrical and Electronics Engineers; Volume: 61; Issue: 6 Linguagem: Inglês

10.1109/t-aiee.1942.5058533

2330-9431

C. Concordia, H. S. Shott, Cornelius Weygandt,

Electric Power Systems and Control

THE object of this paper is to present the results of an analytical study of tie-line power control. This study was made as a logical development of the general subject of power system control. Previous work1,2 has indicated the general requirements of the prime-mover speed governors and the desirability of supplementary control to insure proper load division, frequency, and time. The general requirements of supplementary controls are given in the companion paper3 by Crary and McClure. In most cases these controls are satisfactorily obtained as rather slow corrective adjustments to the speed-governor mechanisms, but for certain types of load a more active tie-line load controller, which will tend to suppress transient load swings also, may be required. An example of this is a rapidly varying load, such as a strip mill supplied from local generation as well as from a tie to a larger power system, in which it may be desirable to keep the load variations off the tie line as much as possible.