Analysis of Acoustic Signals Interfering Diagnostic Measurements of Electric Power Transformer Tap Changers
نویسندگان
چکیده
منابع مشابه
Reverse Power Flow Capability of Tap-changers
INTRODUCTION SWITCHING SEQUENCE A single resistor on-load tap changer comprising fixed contacts F1 and F2, transitional arcing contact T, main arcing contact M and bridging resistor R is shown in Fig. 1. A command initiates the switching operation from normal running position 1 to position 2, such that contact T starts to move left towards contact F2 (Fig. 1a). As T approaches F2 a recovery v...
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اندیشمندان و صاحب نظران علوم اجتماعی بر این باورند که مرحله تازه ای در تاریخ جوامع بشری اغاز شده است. ویژگیهای این جامعه نو را می توان پدیده هایی از جمله اقتصاد اطلاعاتی جهانی ، هندسه متغیر شبکه ای، فرهنگ مجاز واقعی ، توسعه حیرت انگیز فناوری های دیجیتال، خدمات پیوسته و نیز فشردگی زمان و مکان برشمرد. از سوی دیگر قدرت به عنوان موضوع اصلی علم سیاست جایگاه مهمی در روابط انسانی دارد، قدرت و بازتولید...
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Most of the faults on power Circuit Breakers (CBs) and On-Load Tap Changers (OLTCs) on high voltage transformers are of mechanical origin. Mechanical malfunction, mechanical wear and other types of abnormal behaviors can be detected as changes in the acoustic signatures. In this paper, an Expert System (ES) with the addition of a signal processor module and factual database module to the conven...
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This paper proposes a method for extending the ability of rotary power flow controller (RPFC) using tap-changer of the RPFC’s transformers. A detailed model of the device is presented to analyze the effects of the tap changer operation on the performance of the RPFC. To evaluate the results, the RPFC model is simulated using PSCAD/EMTDC software. Dynamic operation of the RPFC on a 400 kV transm...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2013
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.124.387