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Pat. 10488450 United States, Int. Cl.22 G01R 23/15, G01R 31/50, H02J 3/38, H02M 1/00, H02M 7/5387. Islanding detection method and apparatus for inverter, and power supply system : Appl. N 16/278224 : Filed 18.02.2019 : Pub. 26.11.2019 : / Zhangping Shao, Kai Xin, Congyuan Wang ; Assignee Huawei Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10488450/en?oq=US10488450.html (дата обращения: ДД.ММ.ГГГГ).