Journal Volume 5 Issue 2

Harmonic Costs on Distribution Power System

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Oury Ba, Roger Bergeron

This report describes a general approach for the evaluation of a part of the supplementary costs, expended by electric utilities and users, related to losses resulting from the conduction of harmonics currents in LV and MV power distribution systems.

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Last Updated on Monday, 08 September 2014 18:35

Complex Approach to Power Quality in Open Electricity Markets

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Wladyslaw Mielczarski, Grażyna Michalik

Open electricity markets have changed relations between Electricity Distributors and Customers. This leads to more consumer-oriented approach in electricity distribution. Competitive markets are governed by Codes and Rules, which are legal documents to be obeyed by all market participants...

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Last Updated on Monday, 08 September 2014 18:36

On the Need to Control Power Quality in Polish Electrical Networks

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Rozmysław Mieński, Ryszard Pawełek, Irena Wasiak

The paper provides some results of power quality tests performed in nodes of Polish electrical power networks: a thermal-electric power station low voltage network, industrial low voltage network and distribution substation 220/110/15kV. Power quality characteristics obtained during test have been compared...

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Last Updated on Monday, 08 September 2014 18:37

Centralized Comensation of High Harmonics in Electrical Networks

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Igor V. Zhezhelenko, Yuri L. Sayenko

The problems of choice of fliter-compensating devices in electrical networks with nonlinear loads are considered. The method of centralized compensation of high harmonics is offered. The example of centralized compensation of high harmonics in electrical supply systems with nonlinear loads are given.

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Last Updated on Monday, 08 September 2014 18:39

A Method to Separate Load-side and Supply-sid Harmonics

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Yahia Baghzouz

The contribution of a single customer to the harmonic distortion of the supply voltage is a difficult subject to deal with. This paper describes a method to separate the individual harmonic voltage components caused by the supply-side and load-side using back linear circuit theory. Both components...

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Last Updated on Monday, 08 September 2014 18:40

Analysis of Harmonics Distortion Limits in IEC and IEEE Standards

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Regina Lamedica, Alberto Prudenzi, Enrico Tironi, Dario Zaninelli

The paper presents the harmonic distortion limits on currents and voltages in power systems recommended by the two main standard organizations: the IEC and the ANSI/IEEE. The comparison shows some interesting differences in the philosophy and the methodology used to assess...

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Last Updated on Monday, 08 September 2014 18:42

Supply Network Current Symmetrization - a Graphical Approach

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Aleksy Kurbiel, Zbigniew Hanzelka

The three methods of selecting elements for symmetrising network currents and at the same time compensating the reactive power are presented. To select the symmetrising elements, it is necessary to measure the phase voltages of the network, line currents, phase active power and reactive power of the network.

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Last Updated on Monday, 08 September 2014 18:42

Overview of Detroit Edison's Voltage Dip Performance Agreements

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Daniel Sabin, Andy Dettloff, Frank Goodman

In 1995 Detroit Edison entered into long-term pricing and service quality agreements with Chrysler Corporation, Ford Motor Company, and General Motors. The terms are specified in an agreement known as the Special Manufacturing Contract (SMC). The service agreement covers voltage interruptions and voltage dips...

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Last Updated on Monday, 08 September 2014 18:44

A Measurement Program for Analysing and Estimating of Voltage Dips in the Electric Power System

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Dietrich Stade, Holger Schau, Jens Hünermund

This paper is dealing with a measurement campaign performed in the electric power system of Germany. All voltage levels including, these measurements take place in transmission and distribution networks and will take place a the load side as well. Electric utilities and regional suppliers...

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Last Updated on Monday, 08 September 2014 18:45