By HDK / Published on Mon, 2009-06-22 07:10
The Vienna-based Renewable Energy and Energy Efficiency Partnership (REEEP) announced on May 8, 2009 the winners of its 7th project funding cycle. In a highly competitive process, 49 projects in 25 countries were selected for funding out of a total of 694 project concepts received from around the world.
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By Hans De Keulenaer / Published on Wed, 2008-11-05 12:20
Miroslaw Wciœlik, Robert Kazala, Michal Kaskawski, Tomasz Kwaœniewski
The monitoring system of power quality in a network is introduced. The paper deals with functionality, hardware and software of the system. Algorithms of data processing as well as ways of improving processing accuracy of signal processor are presented. Sample results observed by means of the developed system are shown.
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By Hans De Keulenaer / Published on Wed, 2008-10-01 20:55
By A Nikolic et al
The main aim of the paper is design and implementation of measuring and information system for analysis of power quality in compliance with EN 50160 in different points of power supply network. Designed information system provides communication between distributed databases and central information system in using Internet and GPRS/GSM network.
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By Hans De Keulenaer / Published on Thu, 2008-08-28 14:23
By Daniel Kottick
The Israel Electric corp. deployed a nationwide Power Quality Monitoring System (PQMS). The PQMS monitors the quality of supply of all of its high voltage costumers, as well as a sample of its medium voltage customers. The PQMS monitors both the voltages and the currents. The PQMS has been operational since October 2005. The paper presents preliminary measurement results obtained from the PQMS.
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By Hans De Keulenaer / Published on Fri, 2008-07-25 16:56
By P Lloret et al
In the last decades there have been great advances in electronic, information and communication technologies. Up to date, any of these advances have been implemented in electrical systems, but some difficulties have been encountered, particularly regarding to the integration of intelligent electronic devices from different manufactures into a centralized system. With the aim of solving the above mentioned problem, the standard IEC 61850 was developed to specify communication networks in substations.
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By Hans De Keulenaer / Published on Wed, 2008-06-04 17:03
By M Rogoz et al
The paper presents the authors’ approach to design and construction of power quality parameters recorder conforming the requirements of IEC 61000-4-30 standard. The recorder was designed and built according to the measurement algorithms developed by the authors. Modeling of the applied algorithms and analysis of their sensitivity to variation in some parameters were carried out in a Matlab-Simulink environment. Algorithms for measuring modules were subjected to comprehensive tests verifying their correctness.
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By Hans De Keulenaer / Published on Fri, 2008-05-23 15:59
By A Broshi
Power Quality monitoring has become a standard task in electrical network management.
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By Angelo Baggini / Published on Mon, 2008-03-17 14:30
Born from the experience of Leonardo's award winning Leonardo Power Quality Initiative, on April 11th, the new Handbook of Power Quality will be available worldwide, published by Wiley.
The book uses the perspectives of both power suppliers and electricity users, with contributions from experts in all aspects of PQ providing a balance of scientific and practical information on:
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By Hans De Keulenaer / Published on Wed, 2008-01-30 18:55
By P Gburczyk et al
In the paper there are presented results of electrical power quality measurements performed in 220/110/15 kV substation and their assessment according to requirements of Polish regulations. In addition an attempt to estimate a transfer of electromagnetic disturbances in form of voltage distortion and voltage fluctuation between 110 kV and 15 kV networks has been made.
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By Hans De Keulenaer / Published on Wed, 2008-01-23 19:09
By F Vatra et al
During 2006, at CN Transelectrica - OMEPA Branch request, ISPE - Power Systems Department has conceived the designing documentations (Feasibility Study and Tender Documents) for “Power Quality Analyzing System at the big consumers”. The present paper reports the purpose and technical endowment proposed by ISPE for “Power Quality Monitoring and Analyzing System” that will be developed at OMEPA.
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By Hans De Keulenaer / Published on Thu, 2008-01-03 14:25
By I Klaric et al
Necessity for power quality monitoring emerges from rules on deregulated market, legislation according to it, standardization and quality control of delivered merchandise (electrical energy) to the customer, as well as a control mechanism for customers' installations effect on public distribution networks.
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By Hans De Keulenaer / Published on Thu, 2008-01-03 14:22
By D Ilisiu
Transelectrica is the Romanian Transmission and System Operator (TSO). In the company's activities, the Power Quality aspects are very actual and important.
First part of the paper contains the standards and technical requirements regarding the Power Quality aspects included in Romanian technical code of the Electricity Transmission Grid. The reference concerns only the high voltage grid.
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By Hans De Keulenaer / Published on Wed, 2007-12-19 16:15
By V Tukhas
The report reviews practice of solving power quality problems, mainly in the part of establishing power quality monitoring systems; it also contains feasibility analysis for establishing similar systems in Russian Federation and, additionally, provides information about a Russian-made regional power quality monitoring system based on PRORYVKE devices.
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By Hans De Keulenaer / Published on Thu, 2007-10-25 10:30
By D Kottick et al
The Israel Electric corp. deployed a nationwide Power Quality Monitoring System (PQMS). The PQMS monitors the quality of supply of all of its high voltage costumers, as well as a sample of its medium voltage customers. The PQMS monitors both the voltages and the currents. The PQMS has been operational since October 2005. The paper presents preliminary measurement results obtained from the PQMS.
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By Bruno De Wachter / Published on Wed, 2007-10-24 07:30
Demonstrating poor quality
For electricity consumers in India, supply interruptions and low voltage levels are a constant source of concern. Utility companies recognize the problem and are now making major investments to improve Power Quality (PQ). However these improvements are coupled to tariff increases. To verify if real PQ improvements have been made, effective monitoring of the supply quality is crucial. Monitoring also helps track the sources of interruptions and enable comparisons of PQ at various locations.
Governments and regulatory commissions in India use IEEE developed reliability indices such as CAIDI, SAIDI, and SAIFI. These indices require extensive measurements and complex calculations and their use is still in an initial phase in India.
Prayas has now developed a complementary tool, the Electricity Supply Monitoring Initiative (ESMI). Prayas is an Indian non-governmental, non-profit public charitable trust involved with health, energy, learning, and parenthood initiatives. The concept of ESMI is to execute basic monitoring of supply continuity and voltage levels at ordinary consumer locations, in order to get an idea of the actual situation in the field and to increase the accountability of electricity utilities. A data logger records the supply voltage at one minute intervals, as well as the timing and duration of supply interruptions.
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By Hans De Keulenaer / Published on Mon, 2006-05-15 00:00
Roberto Chouhy Leborgne, Gabriel Olguin, Jose M. Carvalho Filho, Math H. J. Bollen
This work addresses the influence of the PQ-monitor connection on the estimation of voltage dip site and system indices. Voltage dip indices are estimated for a set of events obtained from simulation and measurement of voltage dips. The simulated dips are obtained applying the method of fault positions on a large transmission network and the measured dips come from a one-year survey realized on three buses of a sub-transmission and distribution network.
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By Hans De Keulenaer / Published on Thu, 2005-12-01 01:00
Vyacheslav A. Tukhas, S.A. Eintrop, S.V. Pozhidaev,
Research and Production Company PRORYV-KE
Creation and realization the system of the technical monitoring and power quality
control in real time on the base of the new facility of the measurement power quality parameters.
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By Andreas Sumper / Published on Sun, 2005-05-15 00:00
Monitoring power quality often seems the solution for power quality problems. However, in order to solve power quality problems something more than simple installation of power quality monitors at the site is needed. This article attempts to dissipate any doubts of engineers about organizing a monitor program to solve power quality problems. It can be organized in three programs: an overall power quality program, the power quality survey and the immunization program. In all three programs, monitoring plays a decisive role.
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