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Measurement and Simulation of Power Factor using PIC16F877

100%

Rustemli S. , Ates M.

Przegląd Elektrotechniczny

2012

tom R. 88, nr 6

290-294

The aim of the study is to develop a prototype of power factor measurement circuit. In the designed circuit, the power factor is measured using PIC16F877. This paper focuses to design the simple circuit and low-cost. The current and voltage signals of the load are measured at the same phase. Those signals are inserted into PIC16F877 by means of analog circuit. The power factor is calculated by the algorithm written on the PIC16F877. The measurement value of the power factor is displayed on the LCD screen.

Zaproponowano układ pomiarowy do badania współczynnika mocy. Prąd i napięcie są mierzone analogowo a następnie współczynnik mocy jest obliczany przy wykorzystaniu procesora typu PIC16F877.

The Advantages of the Applicability of New Generation Sectionalisers and Reclosers Over the Pole

80%

Cengiz M. S. , Rustemli S. , Almali N.

tom R. 89, nr 2a

155--159

These new generation devices which are being tried for the first time in our country are low cost, can be used instead of output cells of transformer centers which are in medium-voltage lines experiencing problems of expropriation, offer the maximum level of security, don’ t require maintenance for 20 years and offer an easy opportunity to intervene. In addition, protecting the working efficiency of these new products’ electricity transmission lines and distribution systems are evaluated in this study.

W artykule opisano zastosowanie sekcjonalizerów i reklozerów w sieci elektroenergetycznej, jako urządzeń o stosunkowo niskich kosztach utrzymania i dobrych parametrach ochrony linii. Omówiono warunki działania urządzenia w praktyczny zastosowaniu.

Research on effects of environmental factors on photovoltaic panels and modeling with Matlab/Simulink

80%

Rustemli S. , Dincer F. , Almali M. N.

Przegląd Elektrotechniczny

2012

tom R. 88, nr 7a

63-66

In the early days of photovoltaic panels, some 50 years ago, the energy required to generate a photovoltaic panel was more than the energy the panel could generate during its lifetime. As a result of many years of research and experimental studies with today this time can drop up to 3-4 years according to the incentive policies of the some countries. Only obstacle to widespread adoption of photovoltaic panels is cost of their. Therefore, even small studies on photovoltaic panel have great importance to reduce the cost of photovoltaic panel. One of the most important ones is the panel temperature and environmental effects because these factors are affected the panel temperature. In this study, environmental factors that affect to electricity generation capacity of photovoltaic panels have obtained as detailed style with modeling and simulation is designed by Matlab/Simulink programme. Also, environmental factors is added to the model and is entered the system. In addition to this situation were applied on loaded. With this modeling the effects of environmental factors for photovoltaic panels are designed and discussed as detailed by Matlab/Simulink programme.

W artkule zaprezentowano warunki poprawy pracy paneli fotowoltaicznych. Jednym z istotniejszych parametrów jest temperatura panelu i warunki środowiskowe. Zaproponowano model matematyczny panelu uwzględniający warunki środowiskowe.