High power microwave tests of media converters

Abstract

We report on high power microwave (HPM) susceptibility tests of vulnerable IT network components. The devices under test are five different commercial and industrial media converters, one military media converter and a shielded enclosure for commercial media converters. The report compares results of susceptibility tests in different configurations supplemented by transfer function measurements

HPEM vulnerability of smart grid substations coupling paths into typical SCADA devices

“…As a consequence, more and more electronic control and communication systems (Supervisory Control and Data Acquisition System, SCADA) are integrated to support the grid management. These devices can be considered as gateways for EMI (Electromagnetic Interference) and IEMI (Intentional Electromagnetic Interference) [1], [2]. Initial investigations of smart meter devices showed their high susceptibility to HPEM [3].…”

“…On the other hand, the failure of single such devices or even clusters has no effect on the power grid as a whole [3]. The tests of smart meters [3] provided first predictions of coupling paths into systems realized with these components together with a generic wiring similar as in earlier tests of media converters [2]. The results of studies concerning coupling paths into a generic office wiring setup showed that the direct coupling through device housing apertures becomes dominant for frequencies above 2 GHz [4].…”

“…For the smart meter tests, the cross over frequency between direct and cable coupling domination was noticed to be slightly above 1 GHz [3]. For the media converters a comparable frequency range for direct and cable coupling has been determined [2].…”