The following articles may be useful in improving transient stability of microgrids;

https://www.erpublication.org/admin/vol_issue1/upload%20Image/IJETR021349.pdf

http://pnrsolution.org/Datacenter/Vol3/Issue2/161.pdf

http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6528032

https://www.ijerm.com/download_data/IJERM0111030.pdf

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&uact=8&ved=0ahUKEwiswbWokpvMAhXGBI4KHQnHDoEQFgg2MAM&url=http%3A%2F%2Fwww.mdpi.com%2F1996-1073%2F3%2F6%2F1049%2Fpdf&usg=AFQjCNE6mdWj1gQc7PE9zlK4bR_ZlxTg0Q

Hello Gundala Srivivasa Rao,

Good Day!

I would like to share one paper that studied the microgrid system behaviour during the consequent faults, symmetrical fault (LLLG) and asymmetrical fault (L-G, LL & LLG). To enhance the system performance, droop control technique is adopted.

Regards,

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4138777/

hello Gundala Srinivasa Rao,

according my opinion transient stability of microgrids my be enhance by using UPFC, By using multiple models and switching, by using Transient Stability Simulation, by using Renewable Energy Integration, by using Control of storage, by using Load shedding methods, by using Protection device setting, by using  power electronics devices for control etc.

The following paper should give you more understanding on stability issues in microgrid and its control...

http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6412768

Thank you all

   I feel Islanding is also one of the factor effecting the Transient Stability Problem in microgrid. Is it correct or not?