1. Radio Interference with the Operation of Static Utility Protective Relays
- Author
-
R. L. Coren
- Subjects
Engineering ,Electric power distribution ,business.industry ,Automatic frequency control ,Protective relay ,General Engineering ,Electrical engineering ,Energy Engineering and Power Technology ,Co-channel interference ,Interference (wave propagation) ,Electromagnetic interference ,Electronic engineering ,Radio frequency ,Electrical and Electronic Engineering ,business ,Power-system protection - Abstract
Controls used in electric power distribution systems are generally tolerant of the high level of interference signals found in that environment. Recently, however, increased power demnds have required a new class of solid state controls which are more sensitive to RFI. In order to delineate the problem this report examines the magnitude and distribution of RF fields in a small power substation during an incident of radio transmission. RF electric field strengths were of the order of 10 V/m. Exposure of cormercial distribution relays to such fields are shown to produce considerable interference with normal operation. Radio frequencies from 20 to 500 MHz were employed
- Published
- 1981
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