Innovative approach toward an algorithm for automated defect recognition for on-load-tap changers
نویسندگان
چکیده
منابع مشابه
An expert system for acoustic diagnosis of power circuit breakers and on-load tap changers
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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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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هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
15 صفحه اولReverse-Logic Control of Load Tap Changers in Emergency Voltage Conditions
This papers deals with the emergency control of Load Tap Changers (LTCs) to face low transmission voltages or voltage instability situations. The proposed simple control logic consists in reverting the tap movements once the voltage at a monitored transmission bus falls below some threshold. A deadband on this voltage allows the system to settle down in between the normal and reverse logic mode...
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This paper describes the design of a load tap changer (LTC) control for up to four parallel transformers using a modified circulating current approach. The LTC control discussed in this paper was implemented using programmable logic, math functions, and IEC 61850 communications over fiber-optic Ethernet. One LTC control is associated with each transformer. The current angle from each LTC contro...
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ژورنال
عنوان ژورنال: CIRED - Open Access Proceedings Journal
سال: 2017
ISSN: 2515-0855
DOI: 10.1049/oap-cired.2017.0326