Evaluation Of Insulator Surface Corrosion Roughness And Its Performance Changes
dead end suspension insulators plays an important role in insulation and support in power systems, and its surface condition directly affects its electrical performance. During long-term operation, environmental factors such as rainwater, dust, and industrial pollution can cause corrosion and roughness on the polymer deadend insulator surface, which has a significant impact on insulation performance.
The Impact of Surface Corrosion on the Electrical Characteristics of Insulators
porcelain dead end insulators Surface corrosion alters the local electric field distribution, increasing the likelihood of forming moist conductive paths and directly affecting suspension insulator overall performance.
Microstructural Change Analysis
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Pit Formation: Corrosion points form tiny pits, becoming accumulation points for dust and moisture.
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Surface Oxide Layer Cracks: Increased cracks in the metal oxide layer accelerate the formation of local leakage currents.
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Increased Surface Roughness: Increased roughness leads to electric field concentration, increasing the risk of partial discharge.
The Impact of Surface Roughness on Long-Term Insulator Operation
Surface roughness not only affects electrical performance but can also accelerate material aging. In humid and highly polluted environments, rough surfaces easily adsorb contaminants, reducing the insulator's insulation withstand capability and increasing maintenance costs and operational risks. Long-term observations show that regularly checking surface roughness can help understand the trend of insulator performance changes and provide data support for maintenance.
