In power systems, a large number of OPLs （overhead power lines） are more than 40 years old and some even exceed 50 years old. The key issue for power systems managers, public utilities companies and electrical engin...In power systems, a large number of OPLs （overhead power lines） are more than 40 years old and some even exceed 50 years old. The key issue for power systems managers, public utilities companies and electrical engineers today concerns the manner in which available financial resources should be invested in these OPLs to provide the greatest impact on the power system as a whole and to address the OPLs that require urgent revitalization. This paper presents the application of the software tool RevOPL, developed using Microsoft Access utilizing the ＂methodology for revitalization of high-voltage OPLs＂. The aim is to present both the methodology and software to objectively evaluate the condition of an OPL and determine its remaining service life. The application of this software tool provides a proposal for the scheduling and scope of planned revitalization activities, which are obtained through the optimization of the technical characteristics while remaining within the available budget.展开更多
The goal of this work is to perform the risks analysis of the mission NANOSATC-BR1 and NANOSATC-BR2 and then compare them linearly. The NANOSATC-BR1 and NANOSATC-BR2 are the first and the second satellite, respectivel...The goal of this work is to perform the risks analysis of the mission NANOSATC-BR1 and NANOSATC-BR2 and then compare them linearly. The NANOSATC-BR1 and NANOSATC-BR2 are the first and the second satellite, respectively. They belonged to the project NANOSATC-BR-development of CubeSats, which is performed in the facilities built by the partnership between the National Institute of Space Research and the Technological Center from Federal University of Santa Maria. The project focuses on the development of a scientific instrumentation and, simultaneously, the design development, construction, qualification and launch of a national scientific nanosatellite, in a cube shape with 100 mm of edge and near to 1.33 kg of mass, per unit （U）. The risk analysis was held to identify and minimize the project＇s risks of failure, due to its complexity, assuring the mission success, preventing extra pays and rework. The software, CubeSat Mission Design Software Tool for Risk Estimating, which uses statistical regression methods, was used. So, we were capable to measure the project＇s most critical steps assuring its success. The NANOSATC-BR1 was launched in June 19 and it is orbiting the Earth in a nominal regime and the NANOSATC-BR2 has been scheduled to be launched in 2016.展开更多
文摘In power systems, a large number of OPLs （overhead power lines） are more than 40 years old and some even exceed 50 years old. The key issue for power systems managers, public utilities companies and electrical engineers today concerns the manner in which available financial resources should be invested in these OPLs to provide the greatest impact on the power system as a whole and to address the OPLs that require urgent revitalization. This paper presents the application of the software tool RevOPL, developed using Microsoft Access utilizing the ＂methodology for revitalization of high-voltage OPLs＂. The aim is to present both the methodology and software to objectively evaluate the condition of an OPL and determine its remaining service life. The application of this software tool provides a proposal for the scheduling and scope of planned revitalization activities, which are obtained through the optimization of the technical characteristics while remaining within the available budget.
文摘The goal of this work is to perform the risks analysis of the mission NANOSATC-BR1 and NANOSATC-BR2 and then compare them linearly. The NANOSATC-BR1 and NANOSATC-BR2 are the first and the second satellite, respectively. They belonged to the project NANOSATC-BR-development of CubeSats, which is performed in the facilities built by the partnership between the National Institute of Space Research and the Technological Center from Federal University of Santa Maria. The project focuses on the development of a scientific instrumentation and, simultaneously, the design development, construction, qualification and launch of a national scientific nanosatellite, in a cube shape with 100 mm of edge and near to 1.33 kg of mass, per unit （U）. The risk analysis was held to identify and minimize the project＇s risks of failure, due to its complexity, assuring the mission success, preventing extra pays and rework. The software, CubeSat Mission Design Software Tool for Risk Estimating, which uses statistical regression methods, was used. So, we were capable to measure the project＇s most critical steps assuring its success. The NANOSATC-BR1 was launched in June 19 and it is orbiting the Earth in a nominal regime and the NANOSATC-BR2 has been scheduled to be launched in 2016.
