Research of Insulator Contamination about Microwave Radiation Characteristic Based on the Theory of Component Emissivity

Abstract:

Under unfavorable wheather conditions, such as mist, dew and drizzle, contamination flashover may occur on polluted insulators. According to the properties of radiation, this paper proposes a new method for detecting the pollutant on insulators by the dual-channel Dicke radiometer based on the pollutants radiation characteristic and the theory of component emissivity. This study fully considered the effect that the radiation energy of multiple scattering and the external environment on antenna temperature, and it described by the structure of antenna temperature with matrix. A new dual-channel Dicke radiometer has been developed to measure the radiation characteristics of insulators. With a large number of data obtained by experiments, the relationship between ESDD/NSDD and the antenna temperature was researched. And it proposed an empirical formula to calculation ESDD and NSDD. This study provides a new method of detecting insulator contamination by microwave radiometer.

• Periodical: Advanced Materials Research (Volumes 846-847)
• Pages: 469-474
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.846-847.469
• Online since: November 2013
• Authors: Ping Yu*, Chao Rong
• Keywords: Antenna Temperature, Component, Emissivity, ESDD, Insulator Contamination, Microwave Radiometer, NSDD

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