Method for Evaluating Lightning Trip Rate of Electrified Railway in Single Line Embankment Section
A technology for electrified railway and lightning strike trip rate, which is applied in the direction of measuring electricity, measuring electrical variables, forecasting, etc., and can solve the problems of electrified railway lightning protection design and lightning protection transformation difficulties
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[0075] The technical solution of the present invention will be further described below by way of examples in conjunction with accompanying drawing 1 .
[0076] The first step is to obtain line parameters. For a railway single-line embankment section, the distance between the return line and the ground is 8m, the height of the catenary cable to the ground is 7.8m, the distance between the catenary cable and the inner side of the pillar is 3m, the distance between the return line and the inner side of the pillar is 0.8m, and the radius of the return line is 6.25mm. Insulator U50% discharge voltage 270kV, lightning current wave head time 2.6μs, lightning day 40 days, average operating voltage gradient of insulator string 20.36kV, pillar grounding resistance 10Ω, pillar equivalent inductance 6.72μH, adjacent return lines on both sides of the pillar The inductance parallel value is 36.85μH, and the corona correction coefficient is 1.15.
[0077] Calculation season and a 0 =10,b...
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