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The Study on the Influnce of Sub-splits Wire’s AC Corona Characristics under Different Climatic and Environmental Conditions

Author: FengTianYou
Tutor: WenYuanFang
School: Huazhong University of Science and Technology
Course: High Voltage and Insulation Technology
Keywords: UHV Corona cage Artificial environment climate chamber ANSYS High altitude factor Corona Characteristics
CLC: TM851
Type: Master's thesis
Year: 2011
Downloads: 40
Quote: 0
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With our current UHV grid construction as the core is the rapid development of the electromagnetic environment has gradually become the dominant factors of the engineering design and final cost . Our vast climatic and environmental conditions vary , the transmission line conductor design data has been difficult to meet the requirements , at the same time , the construction of high-voltage transmission projects also face unique high - altitude environment impact greatly at high altitudes , the air relative density reduced, the distance between the air molecules to increase , such that the free travel of the electrons becomes large , and easier to obtain sufficient kinetic energy is conducive to the occurrence of a corona discharge , if designed according to the traditional wire , the high altitudes wire corona loss , radio interference will be greatly improved, and audible noise and corona effects are likely to exceed the standard requirements . Thus, high altitude will highlight the the Transmission Project electromagnetic environmental issues , in-depth study and take the necessary measures to control . Medium corona cage wire AC corona characteristics in order to study the high altitude and environmental climate law design can be placed in an artificial environment in a climatic chamber to accurately study the different types of wires in altitude , temperature , humidity , atmospheric density , different climatic conditions such as rain, snow and frost , the variation of radio interference and audible noise level , this article describes only the altitude factors conductor corona characteristics . UHV corona cage corona characteristics test different types of wire , record analysis of different types of conductors in different surface electric field strength varying degrees of simulated rainfall environment , radio interference and audible noise level and variation , and a variety of factors conductor corona characteristics were studied by recording the data calculated by the formula to derive the amount of wire corona generation , can be equivalent to the corona generate the amount of the actual transmission lines , and then guide the selection of the transmission line conductors , so UHV power transmission project with environmental protection , savings , economy .

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CLC: > Industrial Technology > Electrotechnical > High Voltage Engineering > High - voltage insulation technology > Corona impact on the insulation
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