A new approach to the online estimation of the loss of generation size in power systems

Rasoul Azizipanah-Abarghooee, Mostafa Malekpour, Mario Paolone, Vladimir Terzija

Результат исследований: Вклад в журналСтатьярецензирование

16 Цитирования (Scopus)

Аннотация

Following an unintended disconnection of a synchronous generator from the power system, what is also known as a loss of generation (LoG), it is not trivial to precisely estimate the post-event power system's inertia and the LoG size. One of the reasons for that is that both of them are a function of the unknown inertia reduction. To solve this challenging problem, this paper presents an analytical method based on the rate-of-change-of-frequency (RoCoF). The method relies on a modified swing equation, allowing a simultaneous estimation of both unknowns. To this end, the values of mechanical starting time, apparent power, and loading of lost generator are formulated for the power system under study. In a practical application, the method can use RoCoF measured by phasor measurement units. The paper discusses the impact of various frequency estimation approaches to the proposed LoG estimation. Furthermore, a new method for LoG size estimation, based on the interpolated estimated inertial response, is proposed. The efficiency of the proposed approach is validated through extensive simulations with Matlab/Simulink using a simple power system and the IEEE 39-bus test network.

Язык оригиналаАнглийский
Номер статьи8521679
Страницы (с-по)2103-2113
Число страниц11
ЖурналIEEE Transactions on Power Systems
Том34
Номер выпуска3
DOI
СостояниеОпубликовано - мая 2019
Опубликовано для внешнего пользованияДа

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