Realization method of anti-electromagnetic interference technology of mine-used monitoring substatio

The paper analyzed sources of electromagnetic interference in coal mine underground, expounded harm of the electromagnetic interferences on monitoring substation. It gave general technologies and special technologies of anti-electromagnetic interference combining with the practical application of mine-used monitoring substation, and introduced realization method of short time self-powered technique, isolation of anti-interference grounding technique and frequency signal anti-interference technique of the special technologies.