As the increasing high penetration of DERs in distribution network,the DERs should be stay connected with main grid ,but not shut down as soon as the islanding detection function detects the islanding event,to maximize the benefit of DERs in improving distribution network's stability and reliability.However,the two functions have opposite goals.Can anyone tell me some references or give me some recommends about coordination of islanding detection and FRT of the high penetration DERs in distribution network? I will be sincerely appreciate for you to give me some advice.