کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5006433 | 1461475 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Monitoring and analysis of electronic current transformer's field operating errors
ترجمه فارسی عنوان
نظارت و تجزیه و تحلیل خطاهای عملیاتی میدان الکتریکی ترانسفورماتور فعلی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
The energy metering accuracy and relay protection reliability in power grid systems critically depends on the phase current measurement accuracy. Commonly manufactured electronic current transformers (ECT) may exhibit unacceptable errors during field operation. Our research platform targets to remotely monitor ECT's errors caused by ambient temperature variation, load current, and adjacent phase interference. A 0.2% accuracy, 110Â kV, Rogowski coil-based ECT prototype was selected for field operation in over 2Â years of monitoring tests. Correlated field and laboratory tests showed ambient temperature-related errors of less than 0.1% in current ratio and 2â² in phase, findings consistent with the type tests. The load current and adjacent phase interference introduce negligible errors for load currents larger than 0.2In (where In represents the phase rated current). However, the phase error exceeds 20â² for load currents less than 0.2In, possibly leading to false conclusions. Based on the above influencing factors, standardize the 0.2% accuracy ECT's error less than half of the error limit ensures acceptable field error levels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 112, December 2017, Pages 117-124
Journal: Measurement - Volume 112, December 2017, Pages 117-124
نویسندگان
Yan Xu, Yao Li, Xia Xiao, Zili Xu, Haoliang Hu,