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2. Calculating the surface electric field of conductors
2.1 Calculation principle
The most obvious characteristic parameter to which we usually relate the intensity of the corona effect is the electric field at the conductor surface, or surface gradient. Due to the high sensitivity of the corona phenomenon to the value of this field, it is necessary to use a calculation method that provides the field with an accuracy of the order of 1%.
Because most conductors are stranded, the actual surface field fluctuates around a mean value along their circumference. It is customary to calculate the surface field of a smooth conductor with the same outside diameter, even if it means introducing an experimental stranding correction coefficient if necessary.
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Calculating the surface electric field of conductors
Methods for predetermining corona losses
Bibliography
General works on the Crown Effect
Standardization
Specifications for CISPR measuring equipment for frequencies between 0.15 and 30 MHz. (Appendix A). CISPR Publication No. 1 and Publication 1 A. International Electrotechnical Commission. Union Technique de l'Électricité.
Specifications for radio noise and field strength meters 0.015 to 30 megacycles/second. A.N.S.I. C 63.2-1963 Reaffirmed in 1969 (American National Standards Institute)....
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