Distributed Generation Placement Planning Modeling Feeder’s Failure Rate and Customer’s Load Type

In this paper, economic- and network-driven distribution generation (DG) placement planning problem is investigated from the local distribution company's (DISCO's) viewpoint considering reliability level and power loss of the electrical distribution network. Herein, the feeder's failure rate is modeled respective to active component of the current flowing through the feeder applying several mathematical functions. In addition, the customers' load type is modeled and load-model-based power flow is applied instead of conventional power flow. Moreover, in order to achieve realistic results, economic factors such as inflation and interest rates and technical factors including yearly load growth and hourly and daily variations of the load are considered in the planning problem. Furthermore, several analyses are done to calculate amounts of the detriment and error due to unreal modeling of the customers' load type and the feeder's failure rate in the DG placement planning problem. It is proved that the unreal modelings can markedly affect the results of the problem and even the optimal locations of the DGs.