Many computing techniques are used to evaluate Power Quality parameters, each showing specific advantages and disadvantages. This paper presents an improvement of Curve Fitting Algorithm (CFA) having good accuracy in the estimation of the signal’s power quality parameters.

The purpose of this paper is to review the state of the art techniques in signal processing for automatic classification of power quality events and to give a sign of the next trends. The time when power quality monitoring equipment just takes pictures of raw waveforms has gone. Nowadays, power quality monitoring systems are becoming able to identify and classify events automatically in order t...

In this paper ranking of harmonic distortion of each nonlinear load like economical, ministerial, residential and others include hotels, hospitals, universities and terminals in the HORMOZGAN Province Electrical power Distribution network is determined by using new power quality index which is directly related on harmonic distortion sources in the distribution power system. Then, the ranking of...

Electrical power system robustness is defined as the intrinsic capacity of an electrical power system to maintain assigned disturbance levels when external conditions change. In this paper the concept of robustness against is applied to the voltage dips, one of the most severe disturbances in power quality. Using graphical color schemes as immediate tools, improvements and/or degradations of th...

The wind turbine technology is now a developed technology. Modern wind technology incorporates each aspect of grid integration, stability and power quality issues in the arena of reliable power production to user end or utility. The paper provides cumulative modernization of wind turbine technology through literature survey of wind turbine configurations followed by discussion of different cont...

Background A large medical center in the southern United States experienced nuisance tripping of their equipment due to unexplained events on their electrical system. Realizing that nuisance tripping could be the result of any of a number of root causes, the facility contracted with S&C’s Power Systems Services Division to perform a complete power quality evaluation of their electrical system. ...

A microgrid is a cluster of interconnected distributed generators, loads and intermediate storage units that cooperate with each other to be collectively treated by the grid as a controllable load or generator. Power quality events and pre-set conditions will make the microgrid disconnect from the main grid and operate as a separate island. This paper enumerates and discusses the issues concern...

with increase in traffic and speed railway became one of the major load on supply grid .AC-DC convertor used in locomotive of traction system draws rich harmonics content current results in poor power quality and failure or missed operation of utility causing derating of grid and affect the reliability. This paper provide framework for issue like harmonics, voltage sage ,voltage unbalance, poor...

Diagnosing a power quality disturbance means identifying the type and cause of the disturbance. Fast diagnosis of power quality disturbances is important so as to assist network operators in performing counter measures and implementing suitable power quality mitigation actions. In this study a novel method for performing power quality diagnosis is presented by using the S-transform and rule bas...