The invention relates to a power system detection device which is a satellite timing remote wireless phase detector. The satellite timing remote wireless phase detector is formed by two sets of independent use systems and mobile communication telephones. Each set of system comprises a timing receiving host machine, general collectors X and Y, collectors A and B for a ring network cabinet, and collectors A1, A2, B1, B2, C1 and C2 for a centrally installed switchgear. The general collectors X and Y, the collectors A and B for the ring network cabinet, and the collectors A1, A2, B1, B2, C1 and C2 for the centrally installed switchgear are formed by a shell, a circuit board and an emission module respectively. A collected field intensity phase signal is sent to the host machine. A plurality of phase detection functions are integrated in one body, the phase detection of the ring network cabinet, a distribution box, a transformer and a power cable can be completed by one set of phase detector, the versatility is strong, and the repeated purchase of equipment is avoided.