Original scientific paper Harmonics are one of the important factors in determining the energy quality in power systems. Hence, eliminating or damping undesired harmonics is crucial in electrical power systems. Due to their low costs, Passive Power Filters (PPF) are widely used in industrial power systems to limit harmonics' undesired affects. In this study, a new approach to design a PPF for power systems using heuristic Gravitational Search Algorithms (GSA) is proposed. Traditional Try and Error (TAE) method is, first, utilized to eliminate harmonics in our model power system. Then, GSA is adopted to minimize the effective current value of Point of Common Coupling (PCC) in the same model system. Our results yield that our proposed method with GSA eliminates the harmonics effectively.
Keywords: GSA; Passive Power Filters; power systems harmonicsPristup projektiranju pasivnih energetskih filtara za industrijske energetske sustave primjenom algoritama za istraživanje gravitacije Izvorni znanstveni članak Harmonike su jedan od najvažnijih čimbenika pri određivanju kvalitete energije u energetskim sustavima. Stoga je odstranjivanje ili prigušivanje nepoželjnih harmonika od bitne važnosti u elektroenergetskim sustavima. Zahvaljujući niskoj cijeni, pasivni energetski filtri -Passive Power Filters (PPF) uvelike se koriste u industrijskim energetskim sustavima u svrhu ograničenja neželjenih učinaka harmonika. U ovom se radu predlaže novi pristup projektiranju PPF-a za energetske sustave koji primjenjuju heurističke algoritme za istraživanje gravitacije -Gravitational Search Algorithms (GSA). Najprije se, u svrhu eliminiranja harmonika u našem modelu energetskog sustava, primijenila tradicionalna metoda pokušaja i greške -Try and Error (TAE) method. Zatim su se primijenili GSA da bi se smanjila efektivna vrijednost struje u Point of Common Coupling (PCC) u sustavu istog modela. Rezultati pokazuju da naša predložena metoda s GSA učinkovito odstranjuje harmonike.
In this study, an experimental performance comparison of a 2-axis tracking system with a fixed panel in a solar renewable energy system is conducted. The paper mainly focuses on a cost-benefit analysis of fixed and tracking modules. For this aim, an experimental setup was built and periodical measurements were then obtained from the setup. To provide a better comparison, the panels were exposed to the same conditions during the measurements. By considering the real-time experimental results, the paper provides a quantitative analysis of the feasibility of tracking panels for domestic applications as well as an analysis of payback period if a tracking system is used for a home-building application instead of using a conventional fixed module. The study is restricted to the geographical region of Düzce, Turkey.
Enerjinin talebinin artması ile elektrik güç sistemlerinin çalışmasının planlanması ve en uygun koşullarda işletilmesi son zamanlarda artarak önem kazanmaktadır. Ülkemizde ve dünya genelinde talep edilen elektrik enerjisi oldukça yüksek oranla termik yakıtlı santraller tarafından karşılanmaktadır. Ekonomik Yük Dağıtım (EYD) probleminde termik yakıtlı santrallerin yakıt maliyetleri azaltılarak şebekenin işletilmesi amaçlanmaktadır. Bu çalışmada sezgisel yöntemlerden biri olan Karga Arama Algoritması (KAA) uygulanarak Türkiye'de kullanılan 400 kV'luk, 6 adet termik yakıtlı santrali bulunan 14 baralı bir güç sisteminde EYD problemi çözülmüştür. Yapılan çalışmada, jeneratörlerin üretim limit değerleri, hat kayıpları ve üretim-tüketim güç dengesi dikkate alınılarak sistemin toplam yakıt maliyetini en aza indirgemek için jeneratörlerin optimum çalışma şartları belirlenmiştir.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.