Papers by Juan Fernando Velásquez Bedoya
which are based on the model of the power distribution system (MBM), and these which are based on... more which are based on the model of the power distribution system (MBM), and these which are based on the knowledge extracted form fault data bases (KBM) [1][5]. MBM use the fundamental of voltage and current to calculate the impedance as seen from the distribution system substation to the faulted node. This impedance is turned into an equivalent distance by using network parameters. Nevertheless, due to the high ramification of the system, one disadvantage on these methods is the multiple estimation of the faulted section because several locations match with the estimated distance. Other disadvantage is related to the high dependency of the power system model, which is not always well known . Methods which based on other type of information, known as knowledge based methods (KBM), use characteristics obtained from the time domain signal of voltage and current and information as: the type of load, location and settings of the protective devices and information of the faults previously registered. These methods are an excellent complement of the MBM and allow reducing the multiple estimation and the model dependency problems [1][7]. To have a successful implementation of the fault location approach by using KBM, a considerable amount of information of faults in several nodes of the power distribution system is required. Normally, power distribution facilities do not have this information and therefore it is necessary to use simulation techniques that allow obtain a data base with fault registries. ATP is a simulation tool, widely used by electrical engineering researchers, especially to perform fault analysis and studies of the power system transient behavior . This paper presents the modeling of the power distribution system relaying settled in the specific "fuse saving scheme" and the extensive fault data base development, by means of automatic event generation by using ATP and Matlab. The obtained data base could be used to perform different types of analysis and in this specific case, to solve the problem of fault location in distribution systems using KBM. As contents, on section 2 general aspects to be considered to develop a fault location KBM are presented. On section 3, the modeling of both, the distribution system and the protective relaying is described. The automatic fault generation using a collaborative strategy between ATP and Matlab is given in section 4, while the simulation results are presented in 5. On final section some conclusions are drawn.
Uploads
Papers by Juan Fernando Velásquez Bedoya