Published by Blagoja MARKOVSKI, Leonid GRCEV, Vesna ARNAUTOVSKI-TOSEVA, Marija KACARSKA,Ss. Cyril and Methodius University of Skopje, Faculty of Electrical Engineering and Information Technologies Abstract. We analyze the transient grounding characteristics of interconnected wind turbine grounding systems, for fast rising current pulses. By increasing the number of wind turbines, influences on harmonic impedance and transient potentialContinue reading “Transient Performance of Interconnected Wind Turbine Grounding Systems”
Author Archives: PQBlog
Harmonic Current Cancellation Evaluation
Published by Electrotek Concepts, Inc., PQSoft Case Study: Harmonic Current Cancellation Evaluation, Document ID: PQS1002, Date: March 15, 2010. Abstract: Utility power system harmonic problems can often be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. This case study presents the results for a customer step-down transformer harmonic current cancellation evaluation.Continue reading “Harmonic Current Cancellation Evaluation”
Understanding Power Flow and Naming Conventions In Bi-directional Metering Applications
Published by Michael Bearden Introduction In 1982 Raymond “Ray” Stevens published a paper “Power Flow Direction Definitions for Metering of Bi-directional Power”. This paper helped reduce the confusion in the terminology associated with the naming of power quantities based on the direction of active and reactive power flow. The paper did not address leading andContinue reading “Understanding Power Flow and Naming Conventions In Bi-directional Metering Applications”
Importance of Power Quality – Motor
Published by Emerich Energy Private Limited Power quality is of prime importance in deciding the efficiency of any motor. Some of the critical parameters of power quality are • Harmonics• Voltage Unbalance• Voltage Fluctuations In an alternating current (AC) system, the voltage potential and the current through the load circuit are described in frequency andContinue reading “Importance of Power Quality – Motor”
Effect of Grid-Connected Photovoltaic Systems on Static and Dynamic Voltage Stability with Analysis Techniques – A Review
Published by ZETTY ADIBAH KAMARUZZAMAN1, AZAH MOHAMED2, HUSSAIN SHAREEF3,Universiti Kebangsaan Malaysia Abstract. This paper presents an overview on the effect of grid-connected photovoltaic (PV) system on static and dynamic voltage stability and discusses the analysis techniques used to quantify the effect. A review on the published works showed that the PV system design, PV parametersContinue reading “Effect of Grid-Connected Photovoltaic Systems on Static and Dynamic Voltage Stability with Analysis Techniques – A Review”
Impact of SMES Unit on DC-Link Voltage of DFIG during Various Types and Level of Faults
Published by A. M. Shiddiq YUNUS1, Makmur SAINI1, Ahmed Abu-SIADA2, Mohammad A.S. MASOUM3, State Polytechnic of Ujung Pandang (1), IndonesiaCurtin University (2), AustraliaUtah Valley University(3), USA Abstract. Wind energy becomes a popular source for renewable energy based power plants since a recent decade ago. Within many types of wind turbine generator (WTG), Doubly Fed InductionContinue reading “Impact of SMES Unit on DC-Link Voltage of DFIG during Various Types and Level of Faults”
Application of Genetic Algorithm for Optimal Placement of Wind Generators in the MV Power Grid
Published by Ryszard SZCZEBIOT1, Sławomir CIEŚLIK2, State College of Computer Science and Business Administration in Łomża (1)University of Technology and Life Sciences, Bydgoszcz (2) Abstract. The paper presents a modelling method of optimal connection of wind generators to a medium voltage (MV) power grid taking into account minimum active power losses. A genetic algorithm wasContinue reading “Application of Genetic Algorithm for Optimal Placement of Wind Generators in the MV Power Grid”
A Review on Voltage Control Methods for Active Distribution Networks
Published by Tengku Juhana TENGKU HASHIM1, Azah MOHAMED2, Hussain SHAREEF3, Universiti Kebangsaan Malaysia Abstract. Power distribution systems are in the state of transition from passive to active networks due to the rising penetration level of distributed generators (DGs). One of the technical challenges of active networks is to maintain an acceptable voltage level. This problemContinue reading “A Review on Voltage Control Methods for Active Distribution Networks”
General Reference – Effects of Harmonics at Industrial Facilities
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Effects of Harmonics at Industrial Facilities, Document ID: PQS0409, Date: September 30, 2004. Abstract: Harmonic currents injected into the system by nonlinear loads, and the voltage distortion they create as they flow through system impedances, can reduce equipment operating reliability and service life. Potential problemsContinue reading “General Reference – Effects of Harmonics at Industrial Facilities”
Experimental Solar-Based Charging Station for Electric Vehicles
Published by Désiré D. RASOLOMAMPIONONA2, François MAEGHT1, Pierre-Yves CRESSON1,Patrick FAVIER1, I.U.T. de Béthune, Université d’Artois (1), Institute of Electric Power Engineering, Warsaw University of Technology (2) Abstract. For a few years the need of research completion on renewable energy allows the installation of several student projects at the University. A group of co-operating foreign studentsContinue reading “Experimental Solar-Based Charging Station for Electric Vehicles”
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