Naslov
Analysis of active power control algorithms of variable speed wind generators for power system frequency stabilization

Autori
Osmić, Jakub ; Kušljugić, Mirza ; Bećirović, Elvisa ; Toal, Daniel

Izvornik
Turkish Journal of Electrical Engineering and Computer Sciences (1300-0632) 24 (2016), 1; 234-246

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Emulation of inertial response ; primary frequency control ; frequency stabilization ; variable speed wind generator ; inertial control algorithms.

Sažetak
A modified control algorithm of Variable Speed Wind Generator (VSWG) for supporting power system frequency stabilization is presented in this paper. Comparison of the performance of this algorithm with active power control algorithms of VSWG for supporting power system frequency stabilization, as published in the scientific literature, is also presented. A systematic method of analysis of the modified control algorithm is described in detail. It has been shown that by using the modified control algorithm, VSWG “truly” emulates the inertial response of a conventional steam generating unit with synchronous generators during the initial/inertial phase of primary frequency control, following loss of active power generation when wind speed is between cut in (i.e. 4 m/s) and rated speed (i.e. 12 m/s). By the inclusion of a signal proportional to the frequency 2 deviation as a power reference to the torque controller feedback loop of the modified control algorithm it is ensured that the contribution of VSWG to frequency stabilization is independent of the initial wind speed. This independence is kept as long as the wind speed is above the cut in wind speed and slightly below rated wind speed (i.e. 12 m/s). One of the important features of the modified control algorithm, namely a near-proportional relationship between the initial wind turbine speed and the maximum wind turbine speed variation during the inertial response has been identified. The results of the analysis provide a solid basis for further research in the area of VSWG contribution to frequency stabilization.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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