Method and apparatus for protecting electrical components from a transient electromagnetic disturbance transmitted on parallel power lines

A device for preventing an electrical signal induced by hazardous EMI on one or more power lines in a group of multiple adjacent, parallel power lines of the same phase in an electrical power generation, transmission, and distribution system from reaching an electrical component connected to one of the multiple parallel power lines, the device comprising:

• at least one conductive impedance transition element, the at least one conductive impedance transition element comprising a disk-shaped structure comprising an upper section and a lower section, at least one of the upper and lower section containing a notch for receiving an insert including further notches for receiving the multiple adjacent power lines of the same phase, the disk-shaped structure having an outer diameter that is greater than diameter of all of the multiple parallel power lines to deliberately create an impedance mismatch between the at least one conductive impedance transition element and adjacent portions of the multiple power lines;
• wherein the impedance mismatch causes the at least one conductive impedance transition element to reflect high-frequency components of a signal induced on the multiple power lines by hazardous EMI, and
• wherein the high-frequency components are reflected and dissipated as heat.