摘要:Placing DG closer to the load in the system can improve the grid reliability and power quality,
however it can lead to some technical issues such as islanding which requires attention from
utility and Independent Power Producer (IPP). One of the important issues in power system
distribution is islanding detection for protecting the DG when islanding operation occurred. The
detection technique is employed so that the islanding event can be detected within the time
frame. The main reason of detecting islanding situation at distribution level is to monitor the
DG output or system parameters thus can determine the occurrence of islanding situation from
the change of these parameters. Therefore, this paper presents the performance of multiple
parameters of passive islanding detection technique in distribution system connected with
synchronous type of DG. Sixteen passive parameters including rate of change of frequency
(df/dt), rate of change of voltage (dv/dt), rate of change of active power (dp/dt), and rate of
change of reactive power (dq/dt) are evaluated. The sensitivity analysis of these parameters are
determined via simulation in terms of variation of loads, fault events and load switching on
various events that are islanding and non-islanding events. The analysis indicates that each
parameter displays a different pattern of sensitivity towards islanding event.
关键词:Distributed generation; mini hydro generation; islanding detection; passive parameters.