Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/548631
Title: Sharing Transient Loads : Causes of Unequal Transient Load Sharing in Islanded Microgrid Operation
Authors: Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA;Paquette, Andrew D. ; Reno, Matthew J. ; Harley, Ronald G. ; Divan, Deepak M.
subject: battery storage plants; distributed power generation; frequency control; invertors; load management; power system transients; synchronous generators; voltage control; HIL; battery energy-storage inverters; battery life; droop settings; frequency transients; frequency-regulation characteristics; islanded microgrid operation; load step; power electronics; power hardware-in-the-loop approach; steady-state load sharing; synchronous generators; transient power output; unequal transient load sharing; voltage control mode; voltage transients; Frequency control; Frequency measurement; Generators; Inverters; Load management; Microgrids; Transient analysis; Voltage control; Voltage measurement;
Year: 2014
Publisher: IEEE
Abstract: When inverters in voltage control mode are paired with synchronous generators (SGs), they exhibit poor transient load sharing in islanded operation. It is well known that power electronics respond more quickly where the inverter initially picks up the majority of every load step, and the generator's output slowly increases until they reach their steady-state load sharing given by droop settings. This excessive transient power output from the inverter constrains its rating relative to the largest load step and could negatively impact the battery life in battery energy-storage inverters. This article provides a detailed examination of the differences between the frequency-regulation characteristics of inverters and generators to explain, in a novel way, the cause of the poor transient power sharing. The tradeoff between an improved transient load sharing and increased voltage and frequency transients is highlighted, and it is demonstrated that equal transient load sharing can be achieved by emulating an SG using a power hardware-in-the-loop (HIL) approach. Validation is provided by simulation and experimental results.
URI: http://localhost/handle/Hannan/282344
http://localhost/handle/Hannan/548631
ISSN: 1077-2618
volume: 20
issue: 2
Appears in Collections:2014

Files in This Item:
File SizeFormat 
6689318.pdf1.76 MBAdobe PDF
Title: Sharing Transient Loads : Causes of Unequal Transient Load Sharing in Islanded Microgrid Operation
Authors: Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA;Paquette, Andrew D. ; Reno, Matthew J. ; Harley, Ronald G. ; Divan, Deepak M.
subject: battery storage plants; distributed power generation; frequency control; invertors; load management; power system transients; synchronous generators; voltage control; HIL; battery energy-storage inverters; battery life; droop settings; frequency transients; frequency-regulation characteristics; islanded microgrid operation; load step; power electronics; power hardware-in-the-loop approach; steady-state load sharing; synchronous generators; transient power output; unequal transient load sharing; voltage control mode; voltage transients; Frequency control; Frequency measurement; Generators; Inverters; Load management; Microgrids; Transient analysis; Voltage control; Voltage measurement;
Year: 2014
Publisher: IEEE
Abstract: When inverters in voltage control mode are paired with synchronous generators (SGs), they exhibit poor transient load sharing in islanded operation. It is well known that power electronics respond more quickly where the inverter initially picks up the majority of every load step, and the generator's output slowly increases until they reach their steady-state load sharing given by droop settings. This excessive transient power output from the inverter constrains its rating relative to the largest load step and could negatively impact the battery life in battery energy-storage inverters. This article provides a detailed examination of the differences between the frequency-regulation characteristics of inverters and generators to explain, in a novel way, the cause of the poor transient power sharing. The tradeoff between an improved transient load sharing and increased voltage and frequency transients is highlighted, and it is demonstrated that equal transient load sharing can be achieved by emulating an SG using a power hardware-in-the-loop (HIL) approach. Validation is provided by simulation and experimental results.
URI: http://localhost/handle/Hannan/282344
http://localhost/handle/Hannan/548631
ISSN: 1077-2618
volume: 20
issue: 2
Appears in Collections:2014

Files in This Item:
File SizeFormat 
6689318.pdf1.76 MBAdobe PDF
Title: Sharing Transient Loads : Causes of Unequal Transient Load Sharing in Islanded Microgrid Operation
Authors: Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA;Paquette, Andrew D. ; Reno, Matthew J. ; Harley, Ronald G. ; Divan, Deepak M.
subject: battery storage plants; distributed power generation; frequency control; invertors; load management; power system transients; synchronous generators; voltage control; HIL; battery energy-storage inverters; battery life; droop settings; frequency transients; frequency-regulation characteristics; islanded microgrid operation; load step; power electronics; power hardware-in-the-loop approach; steady-state load sharing; synchronous generators; transient power output; unequal transient load sharing; voltage control mode; voltage transients; Frequency control; Frequency measurement; Generators; Inverters; Load management; Microgrids; Transient analysis; Voltage control; Voltage measurement;
Year: 2014
Publisher: IEEE
Abstract: When inverters in voltage control mode are paired with synchronous generators (SGs), they exhibit poor transient load sharing in islanded operation. It is well known that power electronics respond more quickly where the inverter initially picks up the majority of every load step, and the generator's output slowly increases until they reach their steady-state load sharing given by droop settings. This excessive transient power output from the inverter constrains its rating relative to the largest load step and could negatively impact the battery life in battery energy-storage inverters. This article provides a detailed examination of the differences between the frequency-regulation characteristics of inverters and generators to explain, in a novel way, the cause of the poor transient power sharing. The tradeoff between an improved transient load sharing and increased voltage and frequency transients is highlighted, and it is demonstrated that equal transient load sharing can be achieved by emulating an SG using a power hardware-in-the-loop (HIL) approach. Validation is provided by simulation and experimental results.
URI: http://localhost/handle/Hannan/282344
http://localhost/handle/Hannan/548631
ISSN: 1077-2618
volume: 20
issue: 2
Appears in Collections:2014

Files in This Item:
File SizeFormat 
6689318.pdf1.76 MBAdobe PDF