نتایج جستجو برای: واحد اندازهگیری فازور pmu
تعداد نتایج: 30933 فیلتر نتایج به سال:
Event detection and analytic calculations in both Wide Area Measurement Systems (WAMS) and in distribution systems including Phasor Measurement Unit (PMU) based microgrid control systems often use the independent components of the phasors (e.g. frequency or Voltage) rather than the vector representation of a phasor. This paper introduces the use of the discrete time complex Fourier Transform ba...
پس از تجدید ساختار سیستم های قدرت، اپراتورها با نیازهایی برای مانیتور کردن و هماهنگ سازی قسمت های مختلف سیستم های قدرت که در فواصل دور اتفاق می افتد، مواجه شدند. اندازه گیری-های زمان واقعی برای این امر استفاده شدند، که این اندازه گیری ها با استفاده از تخمین حالت ممکن بود. تخمین حالت نقشی کلیدی در مانیتورینگ و کنترل سیستم های قدرت ایفا می کند، و می تواند داده ی زمان حقیقی را برای اپراتورها فراهم...
This paper introduces the efficient application of Virtual Reality (VR) technologies in the Architecture, Engineering and Construction (AEC) industry, where conventional plastic models are mainly used, which is called Physical Mock Up (PMU). An idea of Virtual Model (VM) is introduced in the paper. The VM consists of digital models added by digital information about the project, such as CAD dra...
A self-sustained multi-sensor platform for indoor environmental monitoring is proposed in this paper. To reduce the cost and power consumption of the sensing platform, in the developed platform, organic materials of PEDOT:PSS and PEDOT:PSS/EB-PANI are used as the sensing films for humidity and CO₂ detection, respectively. Different from traditional gas sensors, these organic sensing films can o...
This article presents a study on real-time testing of synchrophasor-based “wide-area monitoring system’s applications (WAMS application).” Considering the growing demand monitoring, protection, and control (WAMPAC)” applications, systematic methodology is formulated delineated in diagrams. The diagrams propose several stages through which an application needs to be assessed (sequentially) for i...
Frequency estimation is a crucial signal processing technique in Phasor Measurement Units (PMU). In this report, we propose a new algorithm for frequency estimation by interpolation of zero-padded discrete Fourier transform (DFT) samples. The bias performance of the proposed estimator is analyzed and an iterative algorithm is further proposed to reduce the bias to an arbitrarily small level. Si...
Phasor Measurement Unit Based on Robust Dynamic State Estimation in Power Systems Using M-Estimators
This paper introduces the uses of Robust Dynamic State Estimation (RDSE) with Phasor Measurement Unit (PMU), The M-Estimators Quadratic Linear (QL) and Square Root (SR) Estimators have been used. For the solution of the M-estimators problem, Iteratively Re-weighted Least Squares Estimation (IRLS) method is applied. In this work, we used the Decoupled Current Measurement (DCM) method to include ...
Ferroresonance is a complex non-linear electrical phenomenon that can make thermal and dielectric problems to the electric power equipment. Ferroresonance causes overcurrents and overvoltages which is dangerous for electrical equipment. In this paper, ferroresonance investigation will be carried out for the 33kV/110V VT at PMU Kota Kemuning, Malaysia using ATP-EMTP simulation. Different precond...
This paper presents a technique for real-time predictionof stability/instability of a power system based on synchrophasor measurements obtained from phasor measurement units (PMUs) at generator buses.For stability assessment the technique makes use of system severity indices developed usingbus voltage magnitudeobtained from PMUs and generator electrical power. Generator power is computed using ...
Many operations in power grids, such as fault detection and event location estimation, depend on precise timing information. In this paper, a novel Time Synchronization Attack (TSA) is proposed to attack the timing information in smart grid. Since many applications in smart grid utilize synchronous measurements and most of the measurement devices are equipped with global positioning system (GPS...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید