This study examines various issues arising in three-phase unbalanced power distribution networks(PDNs)using a comprehensive optimization approach.With the integration of renewable energy sources,increasing energy dema...This study examines various issues arising in three-phase unbalanced power distribution networks(PDNs)using a comprehensive optimization approach.With the integration of renewable energy sources,increasing energy demands,and the adoption of smart grid technologies,power systems are undergoing a rapid transformation,making the need for efficient,reliable,and sustainable distribution networks increasingly critical.In this paper,the reconfiguration problem in a 37-bus unbalanced PDN test system is solved using five different popular metaheuristic algorithms.Among these advanced search algorithms,the Bonobo Optimizer(BO)has demonstrated superior performance in handling the complexities of unbalanced power distribution network optimization.The study is structured around four distinct scenarios:(Ⅰ)improving mean voltage profile and minimizing active power loss,(Ⅱ)minimizing Voltage Unbalance Index(VUI)and Current Unbalance Index(CUI),(Ⅲ)optimizing key reliability indices using both Line Oriented Reliability Index(LORI)and Customer Oriented Reliability Index(CORI)approaches,and(Ⅳ)employing multi-objective optimization using the Pareto front technique to simultaneously minimize active power loss,average CUI,and System Average Interruption Duration Index(SAIDI).The study aims to contribute to the development of more efficient,reliable,and sustainable energy systems by addressing voltage profiles,power losses,reduction of imbalance,and the enhancement of reliability together.展开更多
<span style="font-family:Verdana;">Today, energy is a vital component in the functioning of a hospital. Hospital technical facilities have several types of technologies, these include appliances for us...<span style="font-family:Verdana;">Today, energy is a vital component in the functioning of a hospital. Hospital technical facilities have several types of technologies, these include appliances for use;examination apparatus. So, for Quality Health Care in a hospital, there is</span><span style="font-family:Verdana;"> a</span><span style="font-family:Verdana;"> need to ensure the proper functioning of hospital equipment. In addition to the required maintenance as specified by the device manufacturer, </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">quality of the electrical energy across the device must be ensured. This article is an analysis of the quality of electric energy at the substation of National Hospital of Niamey. Thereby, the data collection, followed by the data processing and analysis revealed the parameters characterizing the quality of electrical energy across the substation. Our studies have shown that the substation is underutilized as the maximum inrush current is less than half the available current. </span><span style="font-family:Verdana;">The </span><span style="font-family:Verdana;">current </span><span style="font-family:Verdana;">was </span><span style="font-family:Verdana;">consumed by the three phases ha</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> resulted </span><span style="font-family:Verdana;">in</span><span style="font-family:Verdana;"> a strong current unbalance (230</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">A). However, the current unbalance and the voltage amplitude</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> are admissible according</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> base on EN50160 standard. Furthermore, the harmonics voltages present in this medium </span><span style="font-family:Verdana;">are</span><span style="font-family:Verdana;"> in the accepted range (1.8%) according to IEEE 519 standard. However, the fundamental frequency does not meet the standard, but the difference obtained has no adverse effect.</span>展开更多
基金supported by the Scientific and Technological Research Council of Turkey(TUBITAK)under Grant No.124E002(1001-Project).
文摘This study examines various issues arising in three-phase unbalanced power distribution networks(PDNs)using a comprehensive optimization approach.With the integration of renewable energy sources,increasing energy demands,and the adoption of smart grid technologies,power systems are undergoing a rapid transformation,making the need for efficient,reliable,and sustainable distribution networks increasingly critical.In this paper,the reconfiguration problem in a 37-bus unbalanced PDN test system is solved using five different popular metaheuristic algorithms.Among these advanced search algorithms,the Bonobo Optimizer(BO)has demonstrated superior performance in handling the complexities of unbalanced power distribution network optimization.The study is structured around four distinct scenarios:(Ⅰ)improving mean voltage profile and minimizing active power loss,(Ⅱ)minimizing Voltage Unbalance Index(VUI)and Current Unbalance Index(CUI),(Ⅲ)optimizing key reliability indices using both Line Oriented Reliability Index(LORI)and Customer Oriented Reliability Index(CORI)approaches,and(Ⅳ)employing multi-objective optimization using the Pareto front technique to simultaneously minimize active power loss,average CUI,and System Average Interruption Duration Index(SAIDI).The study aims to contribute to the development of more efficient,reliable,and sustainable energy systems by addressing voltage profiles,power losses,reduction of imbalance,and the enhancement of reliability together.
文摘<span style="font-family:Verdana;">Today, energy is a vital component in the functioning of a hospital. Hospital technical facilities have several types of technologies, these include appliances for use;examination apparatus. So, for Quality Health Care in a hospital, there is</span><span style="font-family:Verdana;"> a</span><span style="font-family:Verdana;"> need to ensure the proper functioning of hospital equipment. In addition to the required maintenance as specified by the device manufacturer, </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">quality of the electrical energy across the device must be ensured. This article is an analysis of the quality of electric energy at the substation of National Hospital of Niamey. Thereby, the data collection, followed by the data processing and analysis revealed the parameters characterizing the quality of electrical energy across the substation. Our studies have shown that the substation is underutilized as the maximum inrush current is less than half the available current. </span><span style="font-family:Verdana;">The </span><span style="font-family:Verdana;">current </span><span style="font-family:Verdana;">was </span><span style="font-family:Verdana;">consumed by the three phases ha</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> resulted </span><span style="font-family:Verdana;">in</span><span style="font-family:Verdana;"> a strong current unbalance (230</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">A). However, the current unbalance and the voltage amplitude</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> are admissible according</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> base on EN50160 standard. Furthermore, the harmonics voltages present in this medium </span><span style="font-family:Verdana;">are</span><span style="font-family:Verdana;"> in the accepted range (1.8%) according to IEEE 519 standard. However, the fundamental frequency does not meet the standard, but the difference obtained has no adverse effect.</span>
