Unrestrictive expected operation life assessment method for distribution network lightning arrester under given confidence level
A confidence level, non-limiting technique used in instruments, measuring devices, measuring electricity, etc.
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[0016] The present invention will be further described in detail below in conjunction with specific embodiments.
[0017] This evaluation method includes the following steps:
[0018] Step 1: Monitor the unrestricted lightning overvoltage amplitude at the installation point of the arrester within one year, and count its distribution;
[0019] Step 2: Calculate the statistical distribution of the lightning impulse discharge capacity resource consumption of the arrester within one year;
[0020] Step 3: Calculate the expected life of the arrester to limit the lightning overvoltage.
[0021] The voltage amplitude of the step 1 is obtained through the following monitoring and calculation:
[0022] 1. Statistical distribution of unrestricted lightning overvoltage amplitude at the installation point of arrester for distribution network
[0023] The calculation of the statistical distribution of the unrestricted lightning overvoltage at the installation point of the arrester shall...
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