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GentleRain: Cheap and Scalable Causal Consistency with Physical Clocks

Willy Zwaenepoel, Jiaqing Du, Calin Iorgulescu, Amitabha Roy

GentleRain is a new causally consistent geo-replicated data store that provides throughput comparable to eventual consistency and superior to current implementations of causal consistency. GentleRain uses a periodic aggregation protocol to deter- mine whet ...

ACM2014

Evaluation of Lightning Electromagnetic Fields and Their Induced Voltages on Overhead Lines Considering the Frequency Dependence of Soil Electrical Parameters

Farhad Rachidi-Haeri, Mario Paolone, Carlo Alberto Nucci, Keyhan Sheshyekani

This paper presents a comprehensive study on the effect of the frequency dependence of soil electrical parameters on the lightning radiated electromagnetic fields as well as their associated induced voltages on overhead lines. To this aim, a fullwave appro ...

Institute of Electrical and Electronics Engineers2013

Use of the full-wave Finite Element Method for the numerical electromagnetic analysis of LEMP and its coupling to overhead lines

Farhad Rachidi-Haeri, Mario Paolone, Carlo Alberto Nucci

The computation of lightning-originated surges on overhead power lines due to nearby lightning return strokes requires accurate models for the calculation of both the incident lightning electromagnetic pulse (LEMP) and the coupling of this field to the lin ...

Elsevier2013

Guideline for Numerical Electromagnetic Analysis Method

Farhad Rachidi-Haeri, Marcos Rubinstein, Mario Paolone, Carlo Alberto Nucci

The aim of this document is to provide an extended description and application guide of methods belonging to the so-called Numerical Electromagnetic Analysis (NEA) applied to the calculation of electromagnetic transients in power systems. As known, the acc ...

2013

A Review of Field-to-Transmission Line Coupling Models With Special Emphasis to Lightning-Induced Voltages on Overhead Lines

Farhad Rachidi-Haeri

We discuss the transmission line (TL) theory and its application to the problem of lightning electromagnetic field coupling to TLs. We start with the derivation of the general field-to-TL coupling equations for the case of a single-wire line above a perfec ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Time-Domain Implementation of Cooray-Rubinstein Formula via Convolution Integral and Rational Approximation

Farhad Rachidi-Haeri

One of the most popular techniques to take into account the finite ground conductivity in the evaluation of the radial component of the electric field generated by a lightning return stroke is the Cooray-Rubinstein (CR) formula. As this formula is derived ...

2011

Use of the full-wave finite element method for the numerical electromagnetic analysis of LEMP and its coupling with overhead lines

Farhad Rachidi-Haeri, Mario Paolone, Carlo Alberto Nucci

IEEE2011