A method for evaluating the lightning current ablation resistance ability of transmission line conductor and ground wire

A transmission line and ground wire technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the problems of loss of mechanical strength of the ground wire, threats to power grid safety and personal safety, and easy expansion of broken strands and loose wires of the ground wire. , to achieve the effect of ensuring safe and stable operation
CN109212368BActive Publication Date: 2020-12-01GUIZHOU POWER GRID CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU POWER GRID CO LTD
Publication Date
2020-12-01

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Abstract

The invention discloses a method for evaluating the lightning current ablation ability of a grounding wire in a transmission line. The method comprises: by testing the relationship between the cross-section size of different wires, the diameter of a single strand of a wire, the magnitude of a lightning current, the type of a lightning current waveform, and the residual breaking force, respectively, and the lightning current ablation ability of a grounding wire in a transmission line , obtaining quantitative evaluation data of 5 aspects, comprehensively evaluating the lightning current ablationability of the grounding wire in the transmission line , and providing technical support for the lightning-proof selection of the grounding wire in the transmission line, therefore ensuring the safeand stable operation of the power grid.
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Description

technical field

[0001] The invention belongs to the technical field of lightning current ablation resistance of a transmission line ground wire, and in particular relates to a method for evaluating the lightning current ablation resistance capability of a transmission line ground wire. Background technique

[0002] It is not easy to find the broken strands of the ground wire due to lightning strikes. The broken strands of the ground wire are easy to expand and cause a short circuit to the ground. The broken strands of the ground wire lose the mechanical strength. The operation has a great impact. At present, there have been many lightning strikes and broken wires and broken stocks in various places, posing a great threat to the safety of the power grid and personal safety. Therefore, there is an urgent need to carry out research on the evaluation of the lightning current ablation resistance capability of the transmission line ground wire, so as to provide a good lightning cu...

Claims

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