Research on the security coordination tactic for over-present-day relays in distribution generator-built-in distribution networksDo?ng ?i?nh m??c th??c tê? x 1.2 (chi? s?? du?ng khi do?ng th??c tê? thâ?p h?n râ?t nhiê?u so v??i do?ng ?i?nh m??c cu?a ma?y biê?n a?p ho??c thiê?t bi? ?o?ng c??t)Trong nh?ng tr??ng h?p này ?i?u quan tr?ng là c�