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Impact of renewable resources penetration on maximum loading point and dynamic voltage stability

Benalia Nadia, Ben Si Ali Nadia, Zerzouri Nora

Przegląd Elektrotechniczny

2023

R. 99, nr 9

108--112

This paper presents the impact of a grid-connected photovoltaic (PV) generator with a wind turbine on dynamic voltage stability and maximum loading point by considering the PV-wind turbine penetration level and contingencies such as short circuits and load increases with PSAT toolbox under matlab. The IEEE 9-node test feeder is used as a test system. Test results show the maximum loading margin for voltage stability is improved at low PV-wind penetration levels of up to 10% and for 20% of the injections, the increase in is small, then it becomes constant for other injections. For each level of penetration of renewable energies, oscillation damping becomes more important after the elimination of the short circuit.

W artykule przedstawiono wpływ podłączonego do sieci generatora fotowoltaicznego (PV) z turbiną wiatrową na dynamiczną stabilność napięcia i maksymalny punkt obciążenia, biorąc pod uwagę poziom penetracji PV-turbiny wiatrowej i zdarzenia awaryjne, takie jak zwarcia i wzrost obciążenia, za pomocą zestawu narzędzi PSAT w Matlab . 9-węzłowy podajnik testowy IEEE jest używany jako system testowy. Wyniki testów pokazują, że maksymalny margines obciążenia dla stabilności napięcia poprawia się przy niskich poziomach penetracji wiatru fotowoltaicznego do 10%, a dla 20% zastrzyków wzrost jest niewielki, a następnie staje się stały dla innych zastrzyków. Dla każdego poziomu penetracji energii odnawialnych tłumienie oscylacji nabiera większego znaczenia po wyeliminowaniu zwarcia.

Comparative analysis of multi-criteria decision making methods for the assessment of optimal SVC location

Aydin Faruk, Gümüş Bilal

Bulletin of the Polish Academy of Sciences. Technical Sciences

2022

Vol. 70, nr 2

art. no. e140555

The goal of multi-criteria decision making (MCDM) is to select the most appropriate of the alternatives by evaluating many conflicting criteria together. MCDM methods are widely available in the literature and have been used in various energy problems. The key problems studied in electrical power systems in recent years have included voltage instability and voltage collapse. Different flexible alternating current transmission systems (FACTS) equipment has been used for this purpose for decades, increasing voltage stability while enhancing system efficiency, reliability and quality of supply, and offering environmental benefits. Finding the best locations for these devices in terms of voltage stability in actual electrical networks poses a serious problem. Many criteria should be considered when determining the most suitable location for the controller. The aim of this paper is to provide a comparative analysis of MCDM techniques to be used for optimal location of a static VAR compensator (SVC) device in terms of voltage stability. The ideal location can be determined by means of sorting according to priority criteria. The proposed approach was carried out using the Power System Analysis Toolbox (PSAT) in MATLAB in the IEEE 14-bus test system. Using ten different MCDM methods, the most appropriate locations were compared among themselves and a single ranking list was obtained, integrated with the Borda count method, which is a data fusion technique. The application results showed that the methods used are consistent among themselves. It was revealed that the integrated model was an appropriate method that could be used for optimal location selection, providing reliable and satisfactory results to power system planners.