دانلود مقاله ترجمه شده آلودگی ذرات تحت گاز هوای خشک با توجه به قدرت دی الکتریک – مجله IEEE

• فهرست مطالب:

 خلاصه
مقدمه
II راه اندازی آزمایشی و فرآیند
A محفظه تست
B تجزیه و تحلیل
Cتست و نتایج
III نتیجه گیری

• بخشی از ترجمه:

این مطالعه برای طراحی معیارهای عایقی در مورد سطح اسپیسر برای آلودگی ذرات تحت گاز هوای خشک انجام گرفته است، به عنوان گام اساسی که محصول زیست محیطی از سطح کلاس HV را توسعه دهیم.
۱٫ قدرت دی الکتریک گاز SF6 در حدود ۶۰ درصد بالاتر از هوا گاز خشک، تحت آلودگی ذرات می باشد.
۲٫ ذرات فلزی بر روی سطح اسپیسر توسط نیروی جاذبه به آسانی جذب می شوند.
۳٫ شکست ذرات توسط قدرت میدان الکتریکی جهت سطح اسپیسر تعیین می شود.
۴٫ تحت ذره مشابه، تغییر کوچک در ولتاژ شکست توسط فشار گاز وجود دارد.
۵٫ هرچقدر قطر ذرات بزگتر باشد ولتاژ کاهش می یابد.
۶٫ هرچقدر طول ذرات کوچکتر باشد، ولتاژ شکست افزایش می یابد.
از طریق این مطالعه، پروسه ای در مورد معیارهای طراحی عایق در سطح اسپیسر برای آلودگی ذرات با استفاده از محفظه آزمون ایجاد شده است. و ما نیز تست الکتریکی در مورد میدان یکنواخت و غیر یکنواخت و تست افزایش دما برای استفاده از محصولات که از این معیار طراحی استفاده می کنند، انجام داده ایم. در حال حاضر، ما در حال بررسی نتایج هستیم. در نهایت، ما فکر می کنیم نتایج به عنوان داده های اولیه گاز هوای خشک برای توسعه تجهیزات برق دوستدار محیط زیست استفاده خواهد شد.

• بخشی از مقاله انگلیسی:

INTRODUCTION Sulfur hexafluoride(SF6) is widely used in the electrical equipment such as gas insulated switchgear(GIS) and gas circuit breaker(GCB), due to its excellent insulation and arc extinguishing characteristics and thermal stability. Despite its important advantages, SF6 gas became the focus of environmental influence, because SF6 gas causes the serious green-house effect by its emission in the atmosphere. Due to this problem, SF6 gas was classified as regulated gas on Kyoto Protocol( 1997) and many countries are studying it for reduction of SF6 gas. Reduction of using SF6 gas in electrical equipment has been going in various methods. A study of insulation materials which have isolation and arc extinguishing capability is used in variety of medium voltage class commercial products, however, the basic research that can substitute for SF6 in high voltage class is not in advanced level yet. So we were conducted to develop environment-friendly insulating material for GIS that can reduce SF6 gas and make design criteria under dry air gas. This paper presents the dielectric strength and insulating property on the surface of spacer for particle contamination under dry air gas ll. EXPERIMENTAL SETUP AND PROCEDURES A. Test chamber A lightning impulse voltage with a waveform of 1.2/50 J1 s was applied to the surface of spacer with particle. All tests were carried out in a pressure vessel. The chamber was designed for the maximum pressure of 1.0Mpa. The high-voltage connection to the vessel was through a composite bushing. Figure 1 is the test chamber layout. The upper conduct and spacer’s central conductor was assembled. The outer surface of the spacer applied flanges in order to implement the same conditions for GIS.[I] Figure 2 presents particle’s shape. Each length IS from 5mm to 40mm Table 1 presents the test information. Particles were used to create a material after processing tanks in the factory. Figure 3 shows the test chamber is a 2D shape model for analysis using the Maxwell program. Firstly the analysis was conducted on insulator without particle. Figure 4 is the result of insulation surface from the central conductor to flanges. The Convex and concave surface were almost identical to the value of the maximum electric field without particle. But the convex surface maximum electric field location was close to the central conductor and the triple point of the concave surface maximum electric field was located. Figure 5 is the spacer’s surface attachment site for a particle. A particle position on the surface of spacer is divided into nine parts and reviewed. Analysis results by each location of a particle are shown in the figure 6 graph. The distance between conductor and flange of the spacer’s surface. Tn the initial attachment site, we conducted the analysis for spacer on the surface with the particle’s length to 50mm in 10mm gap. As particle’s length becomes longer, the maximum E-filed increase and the breakdown voltage can be expected to become lower. The results of analysis on the central conductor 31 mm concave point has been identified as critical point. That is shown in Figure 7. Fig. 8. Breakdown picture of spacer for initial Tests (a) convex of spacer, (b) concave of spacer Based on these results, the initial tests(LT) were conducted. According to the position of spacer’s the convex and concave surface, the dielectric break down test was carried out. C. Test and Results The test results based on the particle’s length was estimated according to the breakdown voltage. During the test, the voltage increased by 5k V until the breakdown were performed. To fmd the 50% Breakdown voltage, the breakdown was performed 10 times and all test results were applied to analyze the normal distribution.

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