Power Quality - Dips and Interrutions
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This document discusses power quality issues related to voltage dips and interruptions. It defines voltage dips as sudden reductions in voltage for short periods of time, followed by recovery to the original voltage. Short interruptions are defined as the disappearance of AC voltage for less than a minute, followed by recovery. Causes of dips include lightning strikes, short circuits, and starting large motors. The document also discusses dip profiles, immunity testing standards IEC 61000-4-11, and classifications of test results.
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Hitec Power Protection has its headquarters in Almelo, Netherlands. It has sales and service offices around the world including North America, UK, Spain, China, Singapore, Malaysia, Australia, and Taiwan. The document discusses Hitec Power Protection's uninterruptible power supply (UPS) systems which provide continuous, clean power for critical infrastructure using a battery-free system that utilizes kinetic energy storage and a diesel generator for longer outages. The UPS system acts as both a UPS and standby generator in one integrated system, providing advantages over traditional battery-based UPS systems.
Report_AKbar_PDF
This document is a 29-page report on power flow studies submitted by Akbar Pamungkas Sukasdi to Saxion University. It includes instructions for power flow calculations modeling loads as constant impedance, current, or power. It provides per unit calculations of line impedances and transformer admittances for a sample power system. The report then shows MATLAB code and results for calculating bus voltages and currents throughout the system. Cable currents and sending/receiving powers are also determined for cable 1. A comparison table shows calculations match values from the VISION software with no deviation.
IPC_Overview
IPC is an international industry association dedicated to furthering the competitive excellence and financial success of its over 3,700 member companies in the printed circuit board and electronics assembly industries. As the industry's leading source for standards, training, market research, and advocacy, IPC supports programs to meet the needs of the $2 trillion global electronics industry. IPC maintains offices around the world and has expanded its presence in China to better serve the needs of members in that region.
POSA-3phase-systems-intro
This document discusses three-phase power systems from Saxion University of Applied Science. It provides an overview of three-phase systems including the voltages in a three-phase system, phase sequence and angle relationships, and power calculations for a symmetrical three-phase system using apparent, average, and quadrature power. It also shows how a three-phase system can be represented using a single line diagram for symmetrical loads.
3T Final Internship Presentation
The document summarizes the final internship presentation of Akbar Pamungkas Sukasdi at 3T BV. It provides an overview of the company profile, introduces the intern, describes the internship assignment to construct and test a DC/DC converter with push pull topology, provides a block diagram and layout of the design, summarizes the results showing the converter meets specifications, and provides recommendations for improvements.
More from Akbar Pamungkas Sukasdi (9)
Power Quality - Dips and Interrutions
- 1. Saxion University of Applied Sciences POWER QUALITY Deel A Jentje Bootsma Power Quality Dips and Interruptions
- 2. Power Quality 2 Dips and Interruptions Introduction Dips/Interruptions UPS-DC/UPS-AC Harmonics Power Quality Energie efficiëntie Kosten
- 3. Power Quality 3 Dips and Interruptions Voltage dips are defined as sudden reduction in voltage to lower voltages for a short period of time, followed by recovery to the original voltage. Definition of Voltage Dips
- 4. Power Quality 4 Dips and Interruptions Short interruptions are defined as a disappearance of AC voltage for a short period of time, typically not exceeding 1 minute, followed by recovery to the original voltage. Short interruptions can be considered as voltage dips to zero volts. Definition of Short Interruptions
- 5. Power Quality 5 Dips and Interruptions Voltage variations are gradual changes of the supply voltage to a higher or lower value than the rated voltage. The duration can be short or long. Definition of Voltage variations
- 6. Power Quality 6 Dips and Interruptions • Stroke of lightning on • High voltage • Medium Voltage • Low voltage • Short circuit • High voltage • Medium Voltage • Low voltage • Cable braking • Starting large motors, transformers Voltage dips can’t be avoided and will propagate through the grid Causes of dips
- 7. Power Quality 7 Dips and Interruptions Influences decreases with distance Propagation of dips
- 8. Power Quality 8 Dips and Interruptions Normal operation 10 ms 1 min 1% 90% 100% 110% Under voltageVoltage dip Short interruptions 3 min Long interruptions Over voltage Voltage variations, dips and transients Definitions: NEN-EN 50160 No requirements T r a n s i e n t s t
- 9. Power Quality 9 Dips and Interruptions Dip profile 120 ms Dips
- 10. Power Quality 12 Dips and Interruptions
- 11. Power Quality 13 Dips and Interruptions
- 12. Power Quality 14 Dips and Interruptions IEC 61000-4-11 Immunity testing
- 13. Power Quality 15 Dips and Interruptions IEC 61000-4-11 Classification of test results • Performance Criteria A ‘Performance within specification limits’ • Performance Criteria B ‘Temporary degradation which is self-recoverable’ • Performance Criteria C ‘Temporary degradation which requires operator intervention’ • Performance Criteria D ‘Loss of function which is not recoverable’