نتایج جستجو برای: power substation

تعداد نتایج: 488125  

2003
Volker Lohmann

INTRODUCTION In view of the envisaged competitive electricity market era, utilities are examining the application of information technology (IT) as an alternative to support corporate business strategies that focus on improving service, power quality and reducing cost of operation and maintenance. Key issues for the improvement of the overall productivity are more and better information concern...

Journal: :Applied sciences 2022

Fault detection of Substation Power Transformer by Non-contact measurement is important for the safety machines, instruments, and human beings. To make non-contact as convenient possible, it desirable that efficient algorithms based on AE (acoustic emission) discrimination are developed. This paper presents a system quick effective fault substation power transformer, signals collected single mi...

2004
Marco Martinelli Enrico Tronci Giovanni Dipoppa Claudio Balducelli

The aim of this work is to propose an approach to monitor and protect Electric Power System by learning normal system behaviour at substations level, and raising an alarm signal when an abnormal status is detected; the problem is addressed by the use of autoassociative neural networks, reading substation measures. Experimental results show that, through the proposed approach, neural networks ca...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی برق 1387

گستره کاربرد پست های gis به خاطر مزیت های متعدد آن ها از قبیل کوچک سازی پست ها، مشخصه های ضد آلودگی، قابلیت اعتماد بالا و عدم نیاز به تعمیر و نگهداری متوالی، در حال توسعه می باشد. یکی از پدیده هایی که فواصل عایقی داخل محفظه بسته را در این نوع پست ها مورد تهدید قرار می دهند، وقوع اضافه ولتاژهای بسیار سریع می باشد که این نوع اضافه ولتاژها معمولا در اثر عملکرد کلیدزنی سکسیونرهای پست بوجود می آیند....

Journal: :E3S web of conferences 2021

The noise in substations has become one of the most concerning problems field power grid. In this paper, principle substation layout optimization based on maximum acoustic ray shielding method is established premise sound wave propagation rule complicated air medium to meet requirements relevant national environmental standards for at boundary substation. By establishing simulation analysis mod...

2016
L. Shalalfeh P. Bogdan E. Jonckheere

In [4], we have studied the statistical properties and mono-fractality of the power system time series, voltage magnitude (V), frequency (f), and phase angle (θ). The power system data was measured using three Phasor Measurement Units (PMUs) installed at Baylor University, Harris Substation, McDonald Observatory in the Texas Synchrophasor Network [1]. Our analysis of several data sets has shown...

2009

Embedded Generation (EG) is a small scale production of power, typically located close to electricity consumers. Technologies used for EG include combined head and power, solar, wind, biomass, and gas. In Ontario, as a result of the Standard Offer Program (SOP), a large amount of EG projects has been proposed to be directly connected to distribution systems in the IESOControlled Grid (ICG). The...

2003
Ljubomir KOJOVIC

Load currents through the power and distribution transformer and line impedances cause voltage drops, which reduce voltage magnitude at the loads. Voltage magnitudes at service locations must be maintained within specified ranges. This is accomplished in both fixed designs of the system (e.g., conductor selection, substation and distribution transformer tap settings, fixed capacitor banks) and ...

2012
D Thukaram Rimjhim Agrawal

This paper presents a support vector machine (SVMs) approach for locating and diagnosing faults in electric power distribution feeders. The proposed approach is based on the measurements available at the substation and remote terminal units (RTUs). To illustrate the proposed methodology, a practical distribution feeder emanating from 132/11KV-grid substation in India with loads is considered. T...

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