Fault Location in Direct Current Microgrids Using DC Components of Voltage and Current
Fault location is always one of the protection requirements in direct current microgrids. The variable characteristics of currents, bi-direction load flow, and output power fluctuations in renewable sources, which cause problems for protection devices with fixed regulation, are among the challenges of these methods. Today, real-time data access in microgrids and recent developments in high-precision measurement units have become a new research milestone. In this paper, a fault location method in direct current microgrids in grid-connected mode is proposed using voltage and current measurements at the beginning and end of the section and the presence of photovoltaic and energy storage systems. In this method, using the direct current components of voltage and current and considering the π line model, in addition to the fault distance, the fault section has also been determined. Different resistances and fault locations have little effect on the performance of this algorithm. In addition, changes in line parameters and resource productions do not affect the accuracy of this method. The performance of this method was investigated using a microgrid with 8 nodes in MATLAB software and the results show the acceptable accuracy of this method.
-
The effect of geometrical parameters and materials on the distribution of magnetic field density in a permanent magnet synchronous motor through analytical modeling
Reza Mortezaeei, Mahmood Hosseini Aliabadi *,
Marine Technology, -
Analytical Modeling of Magnetic Field Density Distribution in Different Regions of A Permanent Magnet Synchronous Motor through Subdomain Field Modeling Method
Reza Mortezaeei, Mahmood Hosseini Aliabadi*,
Journal of Iranian Association of Electrical and Electronics Engineers, -
Double phase fault location in microgrids with the presence of electric vehicles and Distributed parameters line model
, Mahmood Hosseini Aliabadi, *, Hassan Meyar Naimi
Iranian Electric Industry Journal of Quality and Productivity, -
A new simple matching algorithm presentation for fault section estimation in power distribution network
*, , Rahman Dashti
Iranian Electric Industry Journal of Quality and Productivity,