%0 Thesis %1 stephen2010objective %A Stephen, Robert G. %D 2010 %K DESIGNS Line Power %T OBJECTIVE DETERMINATION OF OPTIMAL POWER LINE DESIGNS %X The thesis investigated the possibility of overhead power line designs being decided by using an objective rather than a subjective method. Power lines are required to meet criteria for load and transfer capability as specified by system planners which results in many different line design solutions. The decision as to which solution to adopt and construct is difficult if a subjective method is used. The hypothesis proposed is thus as follows: It appears that one or a small set of appropriate technology indicators can be used by network planners and designers to identify the best group of overhead lines to meet specified objectives. These indicators can be used for a wide range of applications for AC and DC lines The research was performed by investigating the specifications of the planners and determining the different line designs that could complete the work. This was based on actual case studies of lines designed and built in Eskom South Africa. In addition the parameters for AC and DC lines were examined and parameters selected that would best represent the requirements of the planners as well as cover most of the variables involved in line design. These include the conductor, subconductor bundle, the phase spacing for AC and pole spacing for DC, the tower type and the foundation type. Indicators were derived for both AC and DC line designs using a simple scoring method. An overall score based on weighting factors can be determined for each line design option. By varying the weighting factors the most robust design can be determined. The indicators do not determine the optimum design but rather indicate the group of designs that need to be developed further and implemented. The method is thus a business tool whereby the optimum group of designs can be determined for further analysis and decision. The findings were that the hypothesis is valid. For AC and DC systems separate indicators which form part of the optimisation process are required.

@phdthesis{stephen2010objective, abstract = {The thesis investigated the possibility of overhead power line designs being decided by using an objective rather than a subjective method. Power lines are required to meet criteria for load and transfer capability as specified by system planners which results in many different line design solutions. The decision as to which solution to adopt and construct is difficult if a subjective method is used. The hypothesis proposed is thus as follows: It appears that one or a small set of appropriate technology indicators can be used by network planners and designers to identify the best group of overhead lines to meet specified objectives. These indicators can be used for a wide range of applications for AC and DC lines The research was performed by investigating the specifications of the planners and determining the different line designs that could complete the work. This was based on actual case studies of lines designed and built in Eskom South Africa. In addition the parameters for AC and DC lines were examined and parameters selected that would best represent the requirements of the planners as well as cover most of the variables involved in line design. These include the conductor, subconductor bundle, the phase spacing for AC and pole spacing for DC, the tower type and the foundation type. Indicators were derived for both AC and DC line designs using a simple scoring method. An overall score based on weighting factors can be determined for each line design option. By varying the weighting factors the most robust design can be determined. The indicators do not determine the optimum design but rather indicate the group of designs that need to be developed further and implemented. The method is thus a business tool whereby the optimum group of designs can be determined for further analysis and decision. The findings were that the hypothesis is valid. For AC and DC systems separate indicators which form part of the optimisation process are required.}, added-at = {2021-03-23T00:16:34.000+0100}, author = {Stephen, Robert G.}, biburl = {https://www.bibsonomy.org/bibtex/2aff661d445707ed223718f5b829dbc09/ceps}, interhash = {23ecbe0bc14cccbb28380f9df8680d57}, intrahash = {aff661d445707ed223718f5b829dbc09}, keywords = {DESIGNS Line Power}, timestamp = {2023-12-21T08:32:20.000+0100}, title = {OBJECTIVE DETERMINATION OF OPTIMAL POWER LINE DESIGNS}, year = 2010 }