From maloperation path factor model of protection

an analysis is made of the inadequacy of existing protection inspection technique

and a new inspection technique of high fidelity and power-on test is proposed. Research on a kind of remote monitoring and diagnosis auxiliary platform is going on based on the protection information management substation and protection real-time operation information. And protection device and tripping circuit inspection test without changing the equipment normal operation has been carried out

while the advantages of power-on technique are briefly treated

such as elimination of inspection blind angles

reducing operation risks

improving inspection efficiency without affecting power system primary equipment's operation. Finally

the feasibility and completeness of the power inspection technique is verified by actual engineering application experiment.