Active Fault Current Limitation for Low-Voltage Ride-Through of Networked Microgrids

Abstract

General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

Real‐time low/high‐voltage ride‐through capability improvement of micro‐grid based on coordinated robust grid‐following control

“…Most publications have utilized the grid code requirements equations directly with grid-following methods to cope with the voltage sags originating from the main grid. For instance, authors in [12][13][14] and [15] have used German and Spanish grid code requirements to generate reference currents for power controllers. However, it seems like power fluctuations cannot be ignored.…”

Weak grid integrated solar photovoltaic‐based distributed generation system proficient in supplying VAR requirement with current restriction

“…When the voltage dip level is greater than 10%, the DGs are disconnected from the main grid and reconnected after the fault is cleared. The unintended islanding may lead to critical condition in the system [3]. Recently, a modification in this practice is done and the grid codes are updated to operate the grid connected DGs under voltage dips.…”

“…In ref. [3], an active fault current limiting logic has been proposed for grid connected microgrid to deal with this issue.…”

Design and control of grid-friendly power electronic systems

“…The converters should keep connecting to the grid when the fault level and duration is within a certain range. The voltage-event-ride-through problem has been widely studied for GFDCs while not thoroughly discussed for GFMCs [114][115][116]. To improve the transient stability of GFMCs, the LVRT of GFMCs has become a trending topic recently [31-33, 50, 117, 118].…”