Investigating of wind turbines affects on recloser operation in distribution networks

Multiphysics Modeling of the Dynamic Response of a Vacuum Automatic Circuit Recloser System

“…3 and expressed in (1) and (2). r 3 , r 2 , r 1 , r s are the radii for the outer air gap, the bobbin top, the PM disk, and the shaft, respectively, while l 1 is the width of the PM disk.…”

“…There is some unknown leakage flux, and therefore, an external leakage reluctance R ex is added, which is difficult to quantify in terms of geometry and material, except that this will cause R m to be larger than the value defined in (2). A correction is therefore made to R m in (15) by introducing a correction factor k to represent the external reluctance R ex .…”

“…Because of the automatic reclosing feature, reclosers are widely implemented in distribution power systems since more than 80% of faults in distribution networks are temporary [1], [2]. It ensures that the protection scheme is applied properly to yield the greatest possible reduction in the number and extent of power outages, and minimizes the impact on residential and industrial customers [3], [4].…”

“…If distributed generation (DG), like wind generation for example, is added, the distribution system becomes nonradial. Therefore, the settings and coordination have to be modified [2], [8], and the allocation of DG and protection devices has to be optimized [8], [9].…”