Bonneville Power Administration's 1100-kV Direct Current Test Project: II - Radio Interference and Corona Loss

This is the first report to the industry on radio influence (RI) and corona loss performance of the BPA 1100-kV (±550-kV bipolar) HV dc test line. The report covers bipolar and monopolar tests between December 1963 and December 1964 on three different line configurations. Large diameter single and twin conductor configurations designed for ±375?500-kV operation comprised the line sections. Line lengths from 1.3 to 4.2 miles were investigated. Influence of voltage, pole spacing, measuring frequency, and weather were studied.

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