نتایج جستجو برای: power distribution line

تعداد نتایج: 1423270  

2005
CARLOS CASTRO

It is the purpose of this work to pursue a novel physical interpretation of the nontrivial Riemann zeta zeros and prove why the location of these zeros zn = 1/2 + iλn corresponds physically to tachyonic-resonances/tachyonic-condensates, originating from the scattering of two on-shell tachyons in bosonic string theory. Namely, we prove that if there were nontrivial zeta zeros (violating the Riem...

Journal: :CoRR 2013
Eduardo Vega-Fuentes Sonia Leon-del Rosario Juan Manuel Cerezo-Sanchez Aurelio Vega-Martinez

This paper presents a fuzzy inference system for voltage/reactive power control in distribution substations. The purpose is go forward to automation distribution and its implementation in isolated power systems where control capabilities are limited and it is common using the same applications as in continental power systems. This means that lot of functionalities do not apply and computational...

2016

Proper location of DGs in power systems is important for obtaining their maximum potential benefits. This paper deals with DG for minimizing active power loss and D-statcom for reactive power loss minimization is considered. The proper siting of DG and D-statcom is a recently developed combination with the aim of reducing line loss in a radial distribution system. Loss Sensitivity Factor (LSF) ...

Aims & Backgrounds: The US and the Soviet Union led the east and the west camps during the cold war and the geopolitical order was laid on the foundation of the rivalries between these two superpowers. But, after the collapse of the bipolar system, the US became the undisputed power in the international arena and the geopolitical order underwent changes during three decades after that and the c...

1999
Santiago Grijalva Peter W. Sauer

This paper presents some initial concepts on including reactive power in linear methods for computing Available Transfer Capability (ATC). It proposes a new approach that first determines the reactive power flows using the exact circle equation for the transmission line complex flow, and then determines ATC using active power distribution factors. The ideas are demonstrated on 3-bus and 7-bus s...

2006
Jurgen Haring

We discuss the application of coding and modulation for power-line communications. The results are based on models derived from realistic channel measurements in existing networks and are in agreement with existing standards. Introduction This papers discusses several aspects of communications over the low voltage distribution lines. We first discuss a modulation scheme know as M-tone signaling...

2014
Mario Bogdanović Alen Bažant

As the low power electrical distribution network may be utilized for data transfer, it should be considered as a good candidate for "last mile solution". However, the power line medium strongly depends on its own characteristics (frequency selectivity, multipath, and non-linearity) and on the environment (noise). The realization of a power line communication (PLC) system is performed with the c...

2007
Mir Ghoraishi Jun-ichi Takada Tetsuro Imai

A stochastic channel model for line-of-sight (LoS) street microcell scenarios in dense urban areas is proposed. The scattering power distribution (SPD) in the channel seen from the mobile terminal (MT) based on the physical phenomenon is obtained. The coefficients of the distribution are derived by approximation to the measurements performed in urban street microcell scenarios. The azimuth-powe...

2013
M. M. Aman G. B. Jasmon A.H.A. Bakar H. Mokhlis M. Karimi

Shunt capacitors are commonly used in distribution system for reactive power compensation. Different analytical, numerical programming, heuristic and artificial intelligent based techniques have been proposed in the literature for optimum shunt capacitor bank (SCB) placement. This paper will present a very detailed overview of optimum SCB placement techniques. Six different approaches of optimu...

Journal: :مهندسی بیوسیستم ایران 0
جلیل تقی زاده طامه پردیس کشاورزی و منابع طبیعی دانشگاه تهران- گروه مهندسی مکانیک بیوسیستم علی جعفری پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین موسی زاده پردیس کشاورزی و منابع طبیعی دانشگاه تهران- گروه مهندسی مکانیک بیوسیستم نازیلا طربی پردیس کشاورزی و منابع طبیعی دانشگاه تهران- گروه مهندسی مکانیک بیوسیستم

organic manure plays an important role in the improvement of soil structure by decreasing bulk density and increasing porosity. however, the method of manure spreading influences its beneficial impact on soil structure. in this study, a novel helical manure distributor machine capable of spreading manure with different moisture contents at maximum distribution width was developed and the machin...

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