Novel technique for estimating pollution-associated leakage current in high voltage insulators based on adaptive filtering in long-term recording
| Autor: | Jose-M. Bueno-Barrachina, César-S. Cañas-Peñuelas, Vicente Fuster-Roig, Yiyao Ye-Lin |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Pollution
Novel technique Pollution leakage current Applied Mathematics media_common.quotation_subject High-voltage insulator Pollution deposits associated with leakage current Flashover Adaptive filtering Term (time) Adaptive filter TECNOLOGIA ELECTRONICA Leakage current Arc flash Electronic engineering Environmental science INGENIERIA ELECTRICA Instrumentation Engineering (miscellaneous) High voltage insulators media_common |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| Popis: | Moist polluting substances on high-voltage insulator surfaces can cause power-line failures by triggering electric arcs. There are at present no effective methods of measuring insulator pollution levels during normal operations. In this work, we attempt to estimate insulator pollution leakage current (PLC) as an indirect method of measuring deposits in a 30 month period of simultaneously recording leakage current and related environmental variables in substation insulators. We analyzed the relationship between raw leakage current and environmental variables. We canceled out the influence of relative humidity on leakage current by adaptive filtering and then obtained the PLC by filtering out the anomalous peaks in the recording. The proposed method considerably reduces the correlation between leakage current and relative humidity (0.826 vs 0.019). The resulting signal was only slightly correlated with other environmental variables ( |
| Databáze: | OpenAIRE |
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