PQBlog

Analysis of Power Quality Factors: A Case Study of Windhoek, Namibia

Published by Aldrin Mubiana, Michael Mutingi, Member, IAENG, Gideon Gope, Charles Mbohwa. Conference: Proceedings of the World Congress on Engineering and Computer Science 2016 Vol II WCECS 2016, October 19-21, 2016, San Francisco, USA. Abstract—Power quality (PQ) is concerned with control of harmonic distortions, voltage variations, voltage reductions, power interruptions and voltage surges. Enterprises devicesContinue reading “Analysis of Power Quality Factors: A Case Study of Windhoek, Namibia”

Distribution Substation Voltage Variation Measurement Data Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Distribution Substation Voltage Variation Measurement Data Evaluation, Document ID: PQS1007, Date: October 15, 2009. Abstract: This case study presents a voltage variation data analysis for a 12.47 kV substation monitoring location for a three-month period. The analysis included trends of the rms voltage and unbalance and statistical analysisContinue reading “Distribution Substation Voltage Variation Measurement Data Evaluation”

Electric Power Quality and Ship’s Safety

Published by J. Mindykowski2, E. Szmit1, T. Tarasiuk21 Polish Register of Shipping, Electrical and Automation Department2 Department of Marine Electrical Power Engineering of Gdynia Maritime University 1.Introduction The issue of electric power quality onboard ships has seemed of utmost importance, in particular nowadays when a great progress in implementation of electric drives for ship’s thrusters,Continue reading “Electric Power Quality and Ship’s Safety”

Distribution Feeder Voltage Sag Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Distribution Feeder Voltage Sag Evaluation, Document ID: PQS0905, Date: October 15, 2009. Abstract: This case study shows the results for simulations completed to evaluate the impact of a distribution feeder fault on the operation of a customer adjustable-speed drive during the resulting voltage sag and momentary interruption. TheContinue reading “Distribution Feeder Voltage Sag Evaluation”

Using Portable/Emergency Generators Safely

Published by U.S. Department of Energy (DOE), Office of Cybersecurity, Energy Security, and Emergency Response, Website: energy.gov Power outages are common during disasters, and they can last for several days. You can reduce your losses and speed the recovery process with an emergency generator. Portable generators made for household use can provide temporary power to a fewContinue reading “Using Portable/Emergency Generators Safely”

Customer Induction Motor Starting Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Customer Induction Motor Starting Evaluation, Document ID: PQS0904, Date: October 15, 2009. Abstract: This case study shows the results for simulations completed to determine the severity of an undervoltage condition during starting of a customer induction motor starting. The simulations for the case were completed using the PSCADContinue reading “Customer Induction Motor Starting Evaluation”

In Case of a Power Outage

Published by Silicon Valley Power® (SVP), City of Santa Clara, California, USA. Power outages are inconvenient for everyone, and we at Silicon Valley Power (SVP) do everything we can to reliably maintain your power. When we do have an outage, SVP is dedicated to resolving the problem as quickly as possible. We take pride inContinue reading “In Case of a Power Outage”

EMC for 2 to 150 kHz: A Proposal for Emission and Immunity of Equipment including Power-Line Communication

Published by Anders Larsson and Math Bollen, ELFORSK, Elforsk rapport 09:29, October 2008 Summary The frequency range from 2 to 150 kHz is not sufficiently covered in international standards. The contrast with the frequency range below 2 kHz is striking. There have traditionally been good reasons to emphasize on the lower frequency range, where theContinue reading “EMC for 2 to 150 kHz: A Proposal for Emission and Immunity of Equipment including Power-Line Communication”

Harmonic Issues Related to Power Factor Correction

Published by Electrotek Concepts, Inc., PQSoft Case Study: Harmonic Issues Related to Power Factor Correction, Document ID: PQS0604, Date: April 1, 2006. Abstract: Power factor correction is an important facet of power quality. Capacitors may be installed on customer systems to minimize charges for poor power factor on their electric bill. These installations may create problemsContinue reading “Harmonic Issues Related to Power Factor Correction”

Power Factor Correction – Estimating Financial Savings

Published by Electrotek Concepts, Inc., PQSoft Case Study: Power Factor Correction – Estimating Financial Savings, Document ID: PQS0601, Date: January 1, 2006. Abstract: Low power factor means that you are using a facility’s electrical system inefficiently. It can also cause equipment overloads, low voltage conditions, and greater line losses. Most importantly, low power factor can increaseContinue reading “Power Factor Correction – Estimating Financial Savings”