Adaptive underfrequency load shedding based on the magnitude of the disturbance estimation

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Аннотация

In this paper, a new approach to adaptive underfrequency load shedding (UFLS), a procedure for protecting electric power systems from dynamic instability and frequency collapse, is presented. It consists of two main stages. In the first stage, the frequency and the rate of frequency change are estimated by the nonrecursive Newton-type algorithm. By using the simplest expression of the generator swing equation, in the second algorithm stage, the magnitude of the disturbance is determined. The UFLS plan is adapted to the magnitude estimated, obtaining in this way a more efficient system operation during emergency conditions. Results of procedure testing are demonstrated through the dynamic simulations by using: 1) a simple three-machine test system and 2) a ten-machine New England system.

Язык оригиналаАнглийский
Страницы (с-по)1260-1266
Число страниц7
ЖурналIEEE Transactions on Power Systems
Том21
Номер выпуска3
DOI
СостояниеОпубликовано - авг. 2006
Опубликовано для внешнего пользованияДа

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