Evaluation of Power System Reliability Considering Direct Load Control Effects

With the development of deregulated power systems and increase of prices in some hours of day, demand side management programs were noticed more by customers. In restructured power systems, DSM programs are introduced as DEMAND RESPONSE. In this paper we try to evaluate the effect of DR programs on power system reliability and nodal reliability. In order to reach to this target, Direct Load Control program, as the most common demand response program, is considered. Effects of demand response programs on system and nodal reliability of a deregulated power system are investigated using direct load control and economic load model, DC power-flow-based optimal load curtailment objective and reliability evaluation techniques. The proposed method is evaluated by numerical studies based on a small reliability test system (RBTS), and simulation results show that demand response program can improve the system and nodal reliability.DOI:http://dx.doi.org/10.11591/ijece.v3i2.229

The live experience of coronavirus disease with emphasis on its psychological effects and consequences

BACKGROUND: The aim of this study was to investigate the living experience of coronary patients in Shiraz and the peak prevalence of the second stage in summer. This study could further examine these experiences in broader groups in subsequent studies. Identifying the psychological causes and effects of this disease with the help of patients involved in some countries has been considered. MATERIALS AND METHODS: The method, which was used in this study, was a qualitative method and content analysis. Participants in this study were 13 patients with COVID-19, some of whom were members of the medical staff. The participants were selected purposefully. The semi-organized interview with the participants continued until the theoretical saturation was reached. RESULTS: After extracting the codes, researchers classify them, and then the results were examined in more depth and categorized. About 120 extracted codes were classified into seven general categories; three of them were directly related to psychological issues. The other four of them were related to the subject of psychological effects and consequences. CONCLUSION: In general, during the interview process, it was proved that the more severe the symptoms of the disease, the psychological experiences of confronting the disease because of its outbreak, and the processes of coping with it were deeper