Carpathian Journal of Electrical Engineering

18-33

Authors: Andreja SAMČOVIĆ

This paper describes in detail analysis of Digital Cinema Package (DCP) file format structure, which is today widely used for distribution of digital movies for digital cinema. The whole process from creating source files, following by intermediate steps, to the final form of this format, is presented as well. Security principles are covered by Key Delivery Message (KDM). Some free software for creation DCP are mentioned at the end of this paper.

42-56

Authors: Emmanuel Asuming FRIMPONG, Philip Yaw OKYERE, Johnson ASUMADU

This paper presents a method based on wavelet analysis (WA) and Multilayer perceptron neural network (MLPNN) to predict transient stability status (TSS) after a disturbance. It uses as input data, generator terminal frequency deviations extracted at a rate of thirty-two samples per cycle. Only the first eight frequency deviation samples per machine are needed. The eight samples are sub-divided into two sets, one set consisting of the first four samples and the other set consisting of the last four samples. Each set of samples is decomposed into 2 levels using the Daubechies 8 mother wavelet and the absolute peak value of detail coefficients obtained. The absolute peaks of detail coefficients of the first sample sets of all generators are added and so are the absolute peaks of detail coefficients of the second sample sets. The two summed values are then used as inputs to a trained MLPNN which predicts the TSS. The method was evaluated using dynamic simulations carried out on the New England test system. The method was found to be accurate and can be implemented in real-world systems to provide system operators advance information on system stability, following disturbances, to aid the deployment of needed emergency control measures.

73-85

Authors: Irina SMICAL, Mariia ORFANOVA

This paper addresses a number of issues regarding the management of waste electrical and electronic equipment (WEEE) and its influence on environmental and human health factors. The study was conducted for Maramures County to highlight the WEEE management and its threats to the environment and human health. Worldwide research results show that improper WEEE treatment and recycling is a factor of environmental pollution and the generation of various diseases, especially where rudimentary techniques are used and there is no means of protecting workers. By dismantling mechanical and pyrometallurgical processing of WEEE components result in a series of contaminants that can pollute the soil, surface water, groundwater, the atmosphere and finally can cause a lot of human diseases. Following the investigations, it is found that the management of WEEE in Maramureș County poses a low risk of contamination given the fact that in this county only WEEE collection is made not also their treatment or recycling. Moreover, all collection activities of WEEE are made safe and are authorized by the environmental protection point of view.

96-104

Authors: Radu JOIAN, Claudiu LUNG, Mircea HORGOȘ

The paper focuses on the use of the Homer software on an autonomous hybrid system. The dedicated Homer software is intended for the energy management analysis of renewable electricity sources. The program simulates the operation of the systems, performing calculations on energy variations for each of the 8760 hours (specific to one year).