Aiming at the problem that traditional main protection reliability and quickness are reduced by transformation of an intelligent substation, the invention provides a local protection device of the intelligent substation. Electronic transformer acquisition information can be achieved at the intelligent substation. The local protection device comprises an SV network server, a GOOSE network server, an MU, a current transformer CT and a potential transformer PT, wherein the SV network server is electrically connected with each stage of MU and is in communication connection with the GOOSE network server, the GOOSE network server is in communication connection of each stage of digital terminal, the MU is used for combining and transmitting voltage and current data, is electrically connected withthe current transformer CT, is in communication connection with the potential transformer PT and the SV network server by a fiber and is electrically connected with a protection unit, the current transformer is electrically connected with the MU, and the potential transformer PT is electrically connected with the MU. By the local protection device, the electrical information reliability of the intelligent substation is improved, the problem of reliability reduction brought by application of an electronic transformer is solved, and the protection reliability of the substation is further improved.