Published by Suwipha Kittitanaphisarn, Chief of Power Quality Section, Engineering & Maintenance Division Service Department, Provincial Electricity Authority (North Area 1, ChiangMai, Thailand)
Category Archives: Case Studies
A PQ Case Study: At A Quartz Tube Factory in Wuxi China
Published by Qianlu Yan, Vice General Manager, Beijing Joint Harvest Science & Technology Co., Ltd. Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail: firstname.lastname@example.org
Effect of Harmonics from DC Arc Furnace on 115kV Capacitor
Published by Phongphat Waraphok, Provincial Electricity Authority (PEA), Thailand.
The Challenges of Harmonic Measurements to Identify the Source of Harmonic Distortion in a Network
Published by Terry Chandler, A Power Quality Practitioner ™ for 30 years, Director of Engineering Power Quality Thailand LTD/Power Quality Inc. USA,Consultant for Dranetz Corporation USA (Asia business unit General manager) Harmonics defined by multiple standards around the world. IEC 61000-4-7 Class I defines harmonics and how to measure them. IEEE 519-2014 defines harmonic limits.Continue reading “The Challenges of Harmonic Measurements to Identify the Source of Harmonic Distortion in a Network”
Power Quality Causes & Effects with Biomass Power Plant
Published by Danaisak Tangsakha, Provincial Electricity Authority (PEA), Thailand.
Solar Plant in Thailand & its Impact on Power Quality
Published by Panida Boonyaritdachochai, Power Quality Engineer, Power Quality (Thailand) Co., Ltd.
The Study of Medium Voltage Source Change Effect to Voltage Sag in Low Voltage Customer in Distribution System
Published by Nat Songkram, Power Quality Section, Provincial Electricity Authority (PEA), Thailand.
Energy Usage Report for A Small Office Facility
Published by Thaweesak Aranchot, Electrical Engineer, Power Quality (Thailand) Co., Ltd. Plan Measure actual usage of each load for recording a consumption. Then determine a way to reduce the usage without impacting a business efficiency Investigate the actual data comparing with Electricity bill Introduction The energy consumption at PQT was studied to determine\how much energyContinue reading “Energy Usage Report for A Small Office Facility”
Electric Vehicle Charger
Published by Terry Chandler, Director of Engineer, Power Quality Inc. Power Quality study for EV charger post• Manufacturer of EV has experienced several internal battery charger failures in new EV’s• 2 sites, 1 in Arizona USA, 1 in Seoul, Korea. The plan for USA site and Korea site• Monitor the voltage quality supplyingContinue reading “Electric Vehicle Charger”
Bank’s High 9’s Infrastructure Saved from Disaster
Published by Dranetz – BMI Case Studies The power system for this major NYC bank providing nationwide credit card and other financial transactions appeared to be performing satisfactorily. Fortunately, the proactive monitoring approach employed in this facility identified a power quality trend that could have caused a catastrophic failure. Non-symmetrical waveforms rich with even orderContinue reading “Bank’s High 9’s Infrastructure Saved from Disaster”