Investigation on Multipoint Measurement Techniques for PQ Monitoring

Abstract

The problem of locating the sources of harmonic distortion in power networks is still a critical task. Several methods based on multipoint measurement techniques have been recently proposed in the literature for harmonic-pollution monitoring. The main goal of this paper is to compare the two most powerful tools designed for this purpose. In this paper, the results of both computer simulations on an IEEE test network and experimental tests performed by means of simultaneous measurements on an ad hoc benchmark power system are presented along with a discussion on the practical usability of such monitoring techniques

A Flexible GPS-based System for Synchronized Phasor Measurement in Electric Distribution Networks

“…These information could be very useful in the attempt of understanding the origin of Power Quality phenomena, which are nowadays an important issues in the management of electric distribution systems [8].…”

Unbalance and harmonic distortion assessment in an experimental distribution network

“…There are many proposals in technical papers to establish the responsibility of each agent for the harmonic distortion in power distribution networks [9][10][11][12][13][14][15][16][17][18][19]. One of the most significant methods is based on the sign of the harmonic active power.…”

“…One of the most significant methods is based on the sign of the harmonic active power. It can be used with measurements in a single-point, [10,11], or with distributed measurements systems, [12][13][14][15]. This method is based on the fact that the harmonic active power flows from source to load if the load is linear, whereas it flows in the opposite direction when it is a distorting load.…”

Polluting loads detection in power systems: a decision-making strategy based on nonactive power measurements

“…The only quantity that is meant to be used for this purpose is the harmonic active power, but it has been demonstrated that in some practical situations this approach cannot provide a correct information about the identification of the harmonic sources. In literature this matter is still debated and different approaches can be found, concerning the definition of proper indices and related measurement methods for the evaluation of harmonic distortion levels at the metering section and for the determination of loads and supply polluting contributions [2][3][4][5][6][7].…”