The University of New South Wales. School of Electrical Engineering and Telecommunications. Industrial and Commercial Power Systems Topic 9
|
|
- Donna Flynn
- 6 years ago
- Views:
Transcription
1 The University of New South Wales School of Electrical Engineering and Telecommunications Industrial and Commercial Power Systems Topic 9 POWER QUALITY
2 Power quality (PQ) problem = any problem that causes voltage, current, or frequency deviations in the supply and may result in mal-operation or failure of end-user equipment. In majority of cases, power quality actually refers to quality of the voltage. Therefore, PQ standards mostly specify requirements on supply voltage.
3 Some effects C/B trips when it shouldn t. Computers lose data or crash Neutral conductors overheat Digital clocks show erratic time Adjustable speed drives trip or suffer damage Power factor correction capacitors blow up Lights flicker
4 Power quality definitions [Ref: R.C. Dugan]
5 Factors that cause power quality problems: Increased use of power quality-sensitive equipment. Increased use of equipment that generates power quality problems Increased inter-connectedness of power system Deregulation of power industry
6 Tolerance envelope for IT equipment. Developed by Information Technology Industry Council (ITIC), formerly Computer and Business Equipment Manufacturers Association (CBEMA).
7 Summary of power quality problems [Ref: R.C. Dugan]
8 Reliability measures for distribution systems: Supply availability: actual time supply is available to customers, expressed as percentage. utilities aim to deliver 4-nine or higher availability (total outage of 52 minutes in one year ) Reliability Index or SAIDI (System Average Interruption Duration Index): average duration lost per customer per year SAIFI (System Average Interruption Frequency Index) CAIDI (Customer Average Interruption Duration Index) MAIFI (Momentary Average Interruption Frequency Index)
9 [Ref. Electricity Network Operation Standards, July 2004]
10 NSW Electricity Information (Independent Pricing and Regulatory Tribunal)
11 Customer Service Standards (EnergyAustralia) Customers can claim a payment if experience: (i) too many interruptions in one year or (ii) an interruption that lasts too long Amount: $80 per claim, max $320 per year per premise Ref. EACustomer Service Standards brochure
12 Customer Service Standards (EnergyAustralia) Ref. EA Customer Service Standards brochure
13 Principal phenomena causing electromagnetic disturbances as classified by the IEC.
14 Categories and characteristics of power system electromagnetic phenomena [Ref: R.C. Dugan]
15 Simplified classification system by EnergyAustralia ENOS Electricity Network Operation Standards, June 2006
16 Transients: 2 categories: impulsive and oscillatory. These terms reflect waveshape of transient. Sometimes, also categorized according to their mode: common mode or normal mode.
17 Transients: Impulsive transients Uni-directional impulse. Characterized by rise and decay times. Most common cause is lightning: Voltage impulse wave of 1.2/50µs Current impulse wave of 8/20µs Due to high frequencies involved, shape of impulsive transients can be changed quickly by network components.
18 Transients: Impulsive transients Lightning stroke current impulse transient.
19 Transients: Oscillatory transients High-frequency oscillatory transient: primary frequency component >500kHz, typical duration in µs. Medium-frequency oscillatory transient: primary frequency between 5kHz and 500kHz with duration of tens of µs. Low-frequency oscillatory transient: primary frequency <5kHz, duration from 0.3 to 50ms. Frequently encountered on sub-transmission and distribution systems. Caused by many types of events, most frequent is capacitor bank energisation.
20 Oscillatory transient by back-to-back capacitor switching Low-frequency oscillatory transient caused by capacitor-bank energisation Low-frequency oscillatory transient caused by ferro-resonance of an unloaded transformer
21 Long-duration voltage variation: Over-voltage: increase in rms ac voltage >110% at 50Hz for duration >1 minute Under-voltage: decrease in rms ac voltage <90% at 50Hz for duration >1 minute Sustained interruption: voltage is <0.1pu for duration >1 minute
22 Short-duration voltage variation: 3 types: interruption, sag, swell. Each can be designated as instantaneous ( s), momentary (0.5 3s) or temporary (3-60s). Interruption: voltage decreases to <0.1 pu for duration <1 minute Sag (dip): decrease in rms 50Hz ac voltage to between 0.1 and 0.9pu for duration <1 minute Swell: increase in rms 50Hz ac voltage to between 1.1 and 1.8pu for duration <1 minute.
23 Short-duration voltage variation: Momentary interruption due to a fault and reclosing.
24 Short-duration voltage variation: Voltage sag caused by single line to ground (SLG) fault.
25 Short-duration voltage variation: Temporary voltage sag caused by motor starting.
26 Short-duration voltage variation: Instantaneous voltage swell on un-faulted phase during a single-line to ground (SLG) fault.
27
28 Voltage sag performance of EnergyAustralia distribution networks. Note: ITIC Information Technology Industry Council of America voltage tolerance envelope
29 Voltage imbalance (unbalance): Result from unbalanced network impedances or unequal distribution of single-phase loads. can cause overheating and mal-operation of certain types of 3φ motors. EnergyAustralia s objective is not to exceed 6% difference between highest and lowest phase or line steady state voltage (5 minute average) for LV network.
30 Voltage imbalance (or unbalance)
31
32 Waveform distortion: Steady-state deviation from ideal 50Hz sine wave. 5 different types of waveform distortion. DC offset Harmonics Inter-harmonics Notching Noise
33 Waveform distortion: DC offset Presence of DC voltage or current Caused by equipment with different operating characteristics in each half cycle (e.g. half-wave rectification), geomagnetic disturbance According to NSW Electrolysis Committee, DC voltage component of neutral conductor w.r.t. earth can reach +/- 10V. Corrosion to earthing system. AS3100 Approval and Test Specification Definitions and general requirements for electrical materials and equipment.
34 Waveform distortion: Harmonics Current waveform and harmonics of an adjustable-speed-drive.
35 Waveform distortion: Harmonics Sinusoidal voltage/current components at multiple frequencies of 50Hz (e.g. 150Hz is third harmonic) Caused by non-linear devices and loads on system. AS/NZS (Electromagnetic compatibility - Assessment of emission limits for distorting loads in MV and HV power systems). Utilities seek to restrict their contribution at the pcc to 30-50% of these limits.
36 Waveform distortion: Inter-harmonics Caused by waveforms that have frequency components that are not integral multiples of fundamental (50Hz) Main causes are static frequency converters, cycloconverters, induction motors, arcing devices. Can cause light flicker, audible noise in audio equipment, vibration in induction machines. Allowable limits specified in IEC Std Mains signaling voltages, injected onto network by the utility, e.g. 492, 750 and 1050 Hz.
37 Waveform distortion: Notching Periodic voltage disturbance caused by switching operation of power electronic devices (current commutation) Extent of distortion determined by depth and width of notch Frequency components due to notching can be quite high Present Australian standards limit notch depth to 20% of peak supply voltage at point of common coupling.
38 Waveform distortion Notching Voltage notching caused by three-phase converter
39 Waveform distortion: Noise Any unwanted signals that cannot be classified as harmonic distortion or transients and have spectral content < 200 khz Caused by power electronic devices, control circuits, arcing equipment, switching power supplies. Improper grounding exacerbates problem. In Australia, acceptable limits set by Spectrum Management Agency.
40 Voltage fluctuation: Rapid changes in voltage within allowable limits of nominal voltage AS specifies new standard nominal voltage to be 230V (reduced from 240V). Tolerance is +10% to - 6% which means actual supply voltage range will not necessarily be lowered. EnergyAustralia aim to maintain steady-state voltage (ten-minute average) within +/-10% of nominal voltage of 240V (i.e. between 264V and 216V), at consumer s terminals. If possible, it will aim for V range.
41 Voltage fluctuation: Voltage flicker caused by arc furnace operation Note: Flicker can cause lamps to blink rapidly, and is visible to human eyes at flickering frequencies of 6-8Hz.
42 Power frequency variation: Deviation of power system fundamental frequency from nominal value (50Hz or 60Hz) Power system frequency directly related to generator rotating speed. Slight variations in frequency as dynamic balance between load and generation changes.. Standards set by NEMMCO (National Electricity Market Management Co Pty Ltd). Affect clock accuracy. Policy of maintaining electrical time in NSW to within 3s of Australian Eastern Standard time.
43 Power frequency variation:
44 Symmetrical components
45
46
47
48
49
50 Harmonic distortion
51 Very little distortion in sine wave voltage generated at power stations Caused by non-linear loads at the end-users Harmonic distortion = periodic distortion in every AC cycle Current distortion caused by non-linear resistance
52 Harmonic current flowing through system impedance results in harmonic voltage at the load.
53 Fourier Analysis Any periodic waveform can be expressed as a Fourier series. Advantage of using Fourier series analysis
54
55 Total harmonic distortion (THD): Measure of effective value of harmonic components For voltage: (IEEE definition) Note: IEC defines THD as % of total rms THD V is a meaningful parameter but THD I may not be. Total demand distortion (TDD) refers to fundamental of peak demand current. Crest factor (CF):
56 Effects of harmonics on power factor
57
58
59 Harmonic resonance
60
61
62 Troubleshooting Power Quality Problems
63 What are the problems? Where are the problems occurring? When do they occur? What else is happening at the same time?
64 PQ problem solving flowchart
65 Equipment for PQ investigations Voltmeters, ammeters, multi-meters Oscilloscopes Harmonic analyzers Power quality analyzers Other devices, e.g. infrared detectors
66 Fluke 43 power quality Analyzer (single phase) Fluke 430 power quality Analyzer (three phase)
67
68
69
70
71 DRANETZ
72 Protection measures
73 Protection measures EnergyAustralia Electricity Network Operation Standard (June 2006)
74 Test next week covers: Transformers Fault current calculations Protection
75 Thank you
76 The Electrical System As A Tandem Bicycle Ref: Stefan Fassbinder, Sept
77 loads Transmission network Constant velocity = constant frequency Constant tension = constant voltage generators Gear = transformer Tandem bicycle moving at constant speed
78 Inductive load compensation Inductive power and its compensation
79 Hyperactive blue rider: Constantly bending forward and backwards Not at rhythm of bike but few times faster Causing bike to jerk forward and backwards. Saddle mounted on castors = harmonic filter Harmonic distortion
80 Voltage dip Voltage rise 50Hz in-phase Connect to system Disconnect from system Keeping constant voltage and frequency
81 Traditional power stations (coal-fired turbo-generators) Wind turbines variable speed drives Slow-speed hydro-generators Three different types of power stations
82 Resistive loads Electrical energy heat Electrical motors Reactive loads Three different types of loads
83
POWER QUALITY. 1. Introduction. ELEC9713 Industrial and Commercial Power Systems
ELEC9713 Industrial and Commercial Power Systems POWER QUALITY 1. Introduction The quality of the electrical supply is an important consideration for both power utilities and consumers. Electrical engineers
More informationPQ Monitoring Standards
Characterization of Power Quality Events Charles Perry, EPRI Chair, Task Force for PQ Characterization E. R. Randy Collins, Clemson University Chair, Working Group for Monitoring Electric Power Quality
More informationPower Quality and Circuit Imbalances Northwest Electric Meter School Presented by: Chris Lindsay-Smith McAvoy & Markham Engineering/Itron
Power Quality and Circuit Imbalances 2015 Northwest Electric Meter School Presented by: Chris Lindsay-Smith McAvoy & Markham Engineering/Itron Summary of IEEE 1159 Terms Category Types Typical Duration
More informationPower Quality Basics. Presented by. Scott Peele PE
Power Quality Basics Presented by Scott Peele PE PQ Basics Terms and Definitions Surge, Sag, Swell, Momentary, etc. Measurements Causes of Events Possible Mitigation PQ Tool Questions Power Quality Measurement
More informationPOWER QUALITY A N D Y O U R B U S I N E S S THE CENTRE FOR ENERGY ADVANCEMENT THROUGH TECHNOLOGICAL I NNOVATION
POWER QUALITY A N D Y O U R B U S I N E S S A SUMMARY OF THE POWER QUALITY REPORT PUBLISHED BY THE CENTRE FOR ENERGY ADVANCEMENT THROUGH TECHNOLOGICAL I NNOVATION H YDRO ONE NETWORKS INC SEPTEMBER 2014
More informationRoadmap For Power Quality Standards Development
Roadmap For Power Quality Standards Development IEEE Power Quality Standards Coordinating Committee Authors: David B. Vannoy, P.E., Chair Mark F. McGranghan, Vice Chair S. Mark Halpin, Vice Chair D. Daniel
More informationPOWER QUALITY MONITORING - PLANT INVESTIGATIONS
Technical Note No. 5 January 2002 POWER QUALITY MONITORING - PLANT INVESTIGATIONS This Technical Note discusses power quality monitoring, what features are required in a power quality monitor and how it
More informationPowerMonitor 5000 Family Advanced Metering Functionality
PowerMonitor 5000 Family Advanced Metering Functionality Steve Lombardi, Rockwell Automation The PowerMonitor 5000 is the new generation of high-end electrical power metering products from Rockwell Automation.
More informationSection 11: Power Quality Considerations Bill Brown, P.E., Square D Engineering Services
Section 11: Power Quality Considerations Bill Brown, P.E., Square D Engineering Services Introduction The term power quality may take on any one of several definitions. The strict definition of power quality
More informationUNDERSTANDING POWER QUALITY
Technical Note No. 1 June 1998 UNDERSTANDING POWER QUALITY This Technical Note describes the range of problems, what causes them, what they affect and what could be done to manage them. Integral Energy,
More informationFundamentals of Power Quality
NWEMS Fundamentals of Power Quality August 20 24, 2018 Seattle, WA Track D Anaisha Jaykumar (SEL) Class Content» Introduction to power quality (PQ)» Causes of poor PQ and impact of application» PQ characteristics»
More informationAn Introduction to Power Quality
1 An Introduction to Power Quality Moderator n Ron Spataro AVO Training Institute Marketing Manager 2 Q&A n Send us your questions and comments during the presentation 3 Today s Presenter n Andy Sagl Megger
More informationA Guide to Power Quality Testing
A Guide to Power Quality Testing Table of Contents What is power quality?... 3 Power quality phenomenon... 3 Under-voltage... 3 Over-voltage... 3 Voltage dips (sags) and swells... 4 Voltage dips (sags)...
More informationPower Quality and Reliablity Centre
Technical Note No. 8 April 2005 Power Quality and Reliablity Centre TRANSIENT OVERVOLTAGES ON THE ELECTRICITY SUPPLY NETWORK CLASSIFICATION, CAUSES AND PROPAGATION This Technical Note presents an overview
More informationQUESTION BANK PART - A
QUESTION BANK SUBJECT: EE6005-Power Quality SEM / YEAR: VII SEMESTER / ACADEMIC YEAR 08-09 UNIT I - INTRODUCTION TO POWER QUALITY Terms and definitions: Overloading - under voltage - over voltage. Concepts
More information1C.6.1 Voltage Disturbances
2 1 Ja n 1 4 2 1 J a n 1 4 Vo l.1 -Ge n e r a l;p a r tc-p o we r Qu a lity 1. Scope The purpose of this document is to state typical levels of voltage disturbances, which may be encountered by customers
More informationGrid codes and wind farm interconnections CNY Engineering Expo. Syracuse, NY November 13, 2017
Grid codes and wind farm interconnections CNY Engineering Expo Syracuse, NY November 13, 2017 Purposes of grid codes Grid codes are designed to ensure stable operating conditions and to coordinate the
More informationPower Quality Analysers
Power Quality Analysers Review of Power Quality Indicators and Introduction to Power Analysers ZEDFLO Australia 6-Mar-2011 www.zedflo.com.au Power Quality Indicators Review of main indicators of electrical
More informationPower Quality Report. A Manufacturing Plant
Power Quality Report Prepared for A Manufacturing Plant 6 May 2016 by Dr Angelo De Francesco Power Quality Consultant CHK Power Quality Pty Ltd Page 1 Contents 1 EXECUTIVE SUMMARY... 4 2 INTRODUCTION...
More informationFatima Michael College of Engineering & Technology
Part A Questions with Answers & Part B Questions UNIT 1: INTRODUCTION TO POWER QUALITY TWO MARKS 1. Define power quality. Power quality has been defined as the parameters of the voltage that affect the
More informationVoltage Sags Evaluating Methods, Power Quality and Voltage Sags Assessment regarding Voltage Dip Immunity of Equipment
s Evaluating Methods, Power Quality and s Assessment regarding Voltage Dip Immunity of Equipment ANTON BELÁŇ, MARTIN LIŠKA, BORIS CINTULA, ŽANETA ELESCHOVÁ Institute of Power and Applied Electrical Engineering
More informationECE 528 Understanding Power Quality
ECE 528 Understanding Power Quality http://www.ece.uidaho.edu/ee/power/ece528/ Paul Ortmann portmann@uidaho.edu 208-733-7972 (voice) Lecture 19 1 Today Flicker Power quality and reliability benchmarking
More informationPower quality report. A Manufacturing Plant
Power quality report Prepared for A Manufacturing Plant 6 May 2016 by Dr Angelo De Francesco Power Quality Consultant Page 1 Contents 1 EXECUTIVE SUMMARY... 4 2 INTRODUCTION... 5 2.1 SITE MONITORED...
More informationUNIT-4 POWER QUALITY MONITORING
UNIT-4 POWER QUALITY MONITORING Terms and Definitions Spectrum analyzer Swept heterodyne technique FFT (or) digital technique tracking generator harmonic analyzer An instrument used for the analysis and
More informationSouthern Company Power Quality Policy
Southern Company Power Quality Policy Alabama Power Georgia Power Gulf Power Mississippi Power i Table of Contents: Southern Company Power Quality Policy SCOPE AND PURPOSE... 1 DEFINITIONS... 2 I. HARMONICS...
More informationEE 2028 POWER QUALITY
A Course Material on EE 2028 POWER QUALITY By Mr. R.RAJAGOPAL ASSISTANT PROFESSOR DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SASURIE COLLEGE OF ENGINEERING VIJAYAMANGALAM 638 056 QUALITY CERTIFICATE
More informationPower Quality in Metering
Power Quality in Metering Ming T. Cheng Directory of Asian Operations 10737 Lexington Drive Knoxville, TN 37932 Phone: (865) 218.5885 PQsynergy2012 www.powermetrix.com Focus of this Presentation How power
More informationVALLIAMMAI ENGINEERING COLLEGE
VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur 60 0. DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK VII SEMESTER EE6005 Power Quality Regulation 0 Academic Year 07 8 Prepared
More informationEmicon Engineering Consultants L.L.C.
Emicon Engineering Consultants L.L.C. Power Quality Consulting & Solutions Presentation / Pre-Qualification Emicon, Specialised in Power Quality Consulting and Pollution Control on Electrical Network www.emiconconsultants.com
More informationPower Quality Disturbaces Clasification And Automatic Detection Using Wavelet And ANN Techniques
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 13, Issue 6 (June 2017), PP.61-67 Power Quality Disturbaces Clasification And Automatic
More informationPower Quality - 1. Introduction to Power Quality. Content. Course. Ljubljana, Slovenia 2013/14. Prof. dr. Igor Papič
Course Power Quality - 1 Ljubljana, Slovenia 2013/14 Prof. dr. Igor Papič igor.papic@fe.uni-lj.si Introduction to Power Quality Content Session 1 Session 2 Session 3 Session 4 1st day 2nd day 3rd day 4th
More informationHarmonic distortion Blackouts Under or over voltage Dips (or sags) and surges, Transients.
Power Quality Standards in India Power Quality is a measure of an ideal power supply system. It can be defined as any power problem manifested in voltage, current and frequency deviations that result in
More informationHarmonic control devices. ECE 528 Understanding Power Quality
ECE 528 Understanding Power Quality http://www.ece.uidaho.edu/ee/power/ece528/ Paul Ortmann portmann@uidaho.edu 208-733-7972 (voice) Lecture 12 1 Today Harmonic control devices In-line reactors (chokes)
More informationCHAPTER 4 POWER QUALITY AND VAR COMPENSATION IN DISTRIBUTION SYSTEMS
84 CHAPTER 4 POWER QUALITY AND VAR COMPENSATION IN DISTRIBUTION SYSTEMS 4.1 INTRODUCTION Now a days, the growth of digital economy implies a widespread use of electronic equipment not only in the industrial
More informationThe seven types of power problems
Computing & Software The seven types of power problems by Joseph Seymour and Terry Horsley, APC, USA Many of the mysteries of equipment failure, downtime, software and data corruption are the result of
More informationPower Quality Evaluation of Electrical Distribution Networks
Power Quality Evaluation of Electrical Distribution Networks Mohamed Idris S. Abozaed, Suliman Mohamed Elrajoubi Abstract Researches and concerns in power quality gained significant momentum in the field
More informationMitigation of Voltage Sag and Swell using D-STATCOM to improve Power Quality
Mitigation of Voltage Sag and Swell using D-STATCOM to improve Power Quality Deeksha Bansal 1 Sanjeev Kumar Ojha 2 Abstract This paper shows the modelling and simulation procedure for power quality improvement
More informationThere s Gold in Those Waveforms Richard P. Bingham, Dranetz-BMI
There s Gold in Those Waveforms Richard P. Bingham, Dranetz-BMI OVERVIEW In the present business climate, companies are under constant pressure to increase profitability by increasing productivity, maximizing
More informationReliability and Power Quality Indices for Premium Power Contracts
Mark McGranaghan Daniel Brooks Electrotek Concepts, Inc. Phone 423-470-9222, Fax 423-470-9223, email markm@electrotek.com 408 North Cedar Bluff Road, Suite 500 Knoxville, Tennessee 37923 Abstract Deregulation
More informationCoupling modes. Véronique Beauvois, Ir Copyright 2015 Véronique Beauvois, ULg
Coupling modes Véronique Beauvois, Ir. 2015-2016 General problem in EMC = a trilogy Parameters Amplitude Spectrum Source (disturbing) propagation Coupling modes Victim (disturbed) lightning electrostatic
More information1. Introduction to Power Quality
1.1. Define the term Quality A Standard IEEE1100 defines power quality (PQ) as the concept of powering and grounding sensitive electronic equipment in a manner suitable for the equipment. A simpler and
More informationCOLLEGE OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK INTRODUCTION TO POWER QUALITY PART A
KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK SUBJECT CODE & NAME : EE1005 POWER QUALITY YEAR / SEM : IV / VIII UNIT I INTRODUCTION TO POWER QUALITY PART
More informationPower Quality Notes 3-2 (MT)
Power Quality Notes 3-2 (MT) Marc Thompson, Ph.D. Senior Managing Engineer Exponent 21 Strathmore Road Natick, MA 01760 Alex Kusko, Sc.D, P.E. Vice President Exponent 21 Strathmore Road Natick, MA 01760
More informationT-68 Protecting Your Equipment through Power Quality Solutions
T-68 Protecting Your Equipment through Power Quality Solutions Dr. Bill Brumsickle Vice President, Engineering Nov. 7-8, 2012 Copyright 2012 Rockwell Automation, Inc. All rights reserved. 2 Agenda What
More informationElectric Power Quality: Voltage Sags Momentary Interruptions
Slide 1 Electric Power Quality: Voltage Sags Momentary Interruptions Ward Jewell Wichita State University ward.jewell@wichita.edu Slide 2 Power Quality Events Voltage sags Outages/interruptions Voltage
More informationUnderstanding Harmonics
Understanding Harmonics Terry Gaiser Sensus What Are Harmonics? 1 » What is Power Quality?» Power quality is the degree to which both the utilization and delivery of electric power affects the performance
More informationPOWER QUALITY AND SAFETY
POWER QUALITY AND SAFETY Date : November 27, 2015 Venue : 40 th IIEE Annual National Convention and 3E XPO 2015 PRESENTATION OUTLINE Power Quality I. INTRODUCTION II. GRID CODE REQUIREMENTS III. ERC RESOLUTION
More informationPQ for Industrial Benchmarking with various methods to improve. Tushar Mogre.
General PQ: Power Quality has multiple issues involved. Thus, need to have some benchmarking standards. Very little is spoken about the LT supply installation within an industry. There is need to understand
More informationIntroduction to Harmonics and Power Quality
NWEMS Introduction to Harmonics and Power Quality August 20 24, 2018 Seattle, WA Track B Anaisha Jaykumar (SEL) Class Content» Definition of power quality (PQ)» Impact of PQ problems» Sources of poor PQ»
More informationSTUDY OF UNIFIED POWER QUALITY CONDITIONER FOR POWER QUALITY IMPROVEMENT RAJIV KUMAR SINKU
STUDY OF UNIFIED POWER QUALITY CONDITIONER FOR POWER QUALITY IMPROVEMENT RAJIV KUMAR SINKU Department of Electrical Engineering National Institute of Technology, Rourkela May 2015 STUDY OF UNIFIED POWER
More informationINTERIM ARRANGEMENTS FOR GRID TIED DISTRIBUTED ENERGY RESOURCES. Technical Requirements for Grid-Tied DERs
INTERIM ARRANGEMENTS FOR GRID TIED DISTRIBUTED ENERGY RESOURCES Technical Requirements for Grid-Tied DERs Projects Division 6/29/2017 Contents 1 Definitions and Acronyms... 1 2 Technical Interconnection
More informationVOLTAGE WAVE QUALITY IN LOW VOLTAGE POWER SYSTEMS
VOLTAGE WAVE QUALITY IN LOW VOLTAGE POWER SYSTEMS José M. R. Baptista, Manuel R. Cordeiro and A. Machado e Moura Department of Electrical Engineering U.T.A.D., Vila Real University Quinta de Prados, 5
More informationAPPLICATION NOTE STANDARD EN VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS
APPLICATION NOTE STANDARD EN 50160 VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS Antoni Klajn, Marta Bątkiewicz-Pantuła March 2013 ECI Available from www.leonardo-energy.org/node/145851
More informationAmelioration of Power Quality in Isolated Power Systems
International Journal of Scientific and Research Publications, Volume 2, Issue 4, April 2012 1 Amelioration of Power Quality in Isolated Power Systems I.Kumaraswamy, W.V.Jahnavi, P.Ramesh Department of
More informationEFFICIENT POWER QUALITY: AN APPROACH TO ENERGY CONSERVATION
EFFICIENT POWER QUALITY: AN APPROACH TO ENERGY CONSERVATION Nirmal Singh 1, Manish Kumar Jain 2 Neeru Goyal 3, Prashant Kumar Tayal 4 1,4 Faculty,Department of Electrical Engg., Dr.K.N. Modi University,
More informationCHAPTER 1 INTRODUCTION
1 CHAPTER 1 INTRODUCTION 1.1 BACKGROUND The increased use of non-linear loads and the occurrence of fault on the power system have resulted in deterioration in the quality of power supplied to the customers.
More informationPower Conditioning Equipment for Improvement of Power Quality in Distribution Systems M. Weinhold R. Zurowski T. Mangold L. Voss
Power Conditioning Equipment for Improvement of Power Quality in Distribution Systems M. Weinhold R. Zurowski T. Mangold L. Voss Siemens AG, EV NP3 P.O. Box 3220 91050 Erlangen, Germany e-mail: Michael.Weinhold@erls04.siemens.de
More informationINTERLINE UNIFIED POWER QUALITY CONDITIONER: DESIGN AND SIMULATION
International Journal of Electrical, Electronics and Data Communication, ISSN: 23284 Volume, Issue-4, April14 INTERLINE UNIFIED POWER QUALITY CONDITIONER: DESIGN AND SIMULATION 1 V.S.VENKATESAN, 2 P.CHANDHRA
More informationPower Analysis Summary
Power Analysis Summary Introduction This is a summary of the power conditions measured with these setup parameters: Measurement File: C:\Users\fhealy\Documents\Fluke\Power Analyze\Core 2 Recording.odn
More informationPower Quality Symptoms What Is Normal? Power Quality Approach. Other Power Quality Solutions
April 25, 2017 Mike Carter Power Quality Symptoms What Is Normal? Power Quality Approach Find and fix Ride-through Solutions Protection/Compensation Schemes Other Power Quality Solutions What Can Go Wrong?
More informationPOWER QUALITY REPORT
Power Quality Research Lab., I-7, Wyb. Wyspiaoskiego 27, 50-370 Wrocław, Poland phone +48713202626, fax +48713202006, email: zbigniew.leonowicz@pwr.wroc.pl Facility: XXX POWER QUALITY REPORT Start Monitoring:
More informationp. 1 p. 6 p. 22 p. 46 p. 58
Comparing power factor and displacement power factor corrections based on IEEE Std. 18-2002 Harmonic problems produced from the use of adjustable speed drives in industrial plants : case study Theory for
More informationHarmonics and Their Impact on Power Quality. Wayne Walcott Application Engineering Manager June, 2017
Harmonics and Their Impact on Power Quality Wayne Walcott Application Engineering Manager June, 2017 Presentation Overview A little about harmonics What are harmonics What are NOT harmonics What creates
More informationCHAPTER 3 ELECTRIC POWER QUALITY
31 CHAPTER 3 ELECTRIC POWER QUALITY 3.1 INTRODUCTION The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of the initial and
More informationMitigation of voltage disturbances (Sag/Swell) utilizing dynamic voltage restorer (DVR)
Research Journal of Engineering Sciences ISSN 2278 9472 Mitigation of voltage disturbances (Sag/Swell) utilizing dynamic voltage restorer (DVR) Abstract Srishti Verma * and Anupama Huddar Electrical Engineering
More informationMotors and drives. Module B- Introduction to input measurements
Motors and drives Module B- Introduction to input measurements Introduction to input measurements There are a number of locations where input measurements may be made Which is the most important location
More information1C.4.1 Harmonic Distortion
2 1 Ja n 1 4 2 1 J a n 1 4 Vo l.1 -Ge n e r a l;p a r tc-p o we r Qu a lity 1. Scope This handbook section contains of PacifiCorp s standard for harmonic distortion (electrical pollution) control, as well
More informationImprove Power Factor and Reduce the Harmonics Distortion of the System
Research Journal of Engineering Sciences ISSN 2278 9472 Improve Power Factor and Reduce the Harmonics Distortion of the System Abstract Jain Sandesh, Thakur Shivendra Singh and Phulambrikar S.P. Electrical
More informationMEASUREMENT METHODS OF THE CHARACTERISTICS AND TARGET VALUES OF THE VOLTAGE QUALITY SUPPLIED BY HYDRO-QUEBEC SYSTEM
MEASREMENT METHODS OF THE CHARACTERISTICS AND TARGET VALES OF THE VOLTAGE QALITY SPPLIED BY HYDRO-QEBEC SYSTEM Report no.: IREQ-99-0 Revision #1 This document is a translated version of the French document
More informationTechnical Requirements for Connecting Small Scale PV (sspv) Systems to Low Voltage Distribution Networks
2014 Technical Requirements for Connecting Small Scale PV (sspv) Systems to Low Voltage Distribution Networks This document specifies the technical requirement for connecting sspv to the low voltage distribution
More informationManaging Power Quality Issues
Managing Power Quality Issues Questline Academy November 4, 2015 Mike Carter Justin Kale 2 Economic Value Productivity Customer Confidence How often do you deal with power quality problems at your facility?
More informationPower Quality Starts At the Load
Power Quality Starts At the Load Richard P. Bingham, Dranetz-BMI, Edison, NJ, USA Abstract The definition of power quality is becoming another one of those terms whose definition gets stretched so far
More informationPOWER QUALITY AND ENERGY EFFICIENCY IN LOW VOLTAGE ELECTRICAL POWER SYSTEM OF THE TECHNICAL UNIVERSITY OF GABROVO
POWER QUALITY AND ENERGY EFFICIENCY IN LOW VOLTAGE ELECTRICAL POWER SYSTEM OF THE TECHNICAL UNIVERSITY OF GABROVO Krasimir Marinov Ivanov, Technical University of Gabrovo, Gabrovo, BULGARIA Georgi Tsonev
More informationElectric Power Quality-Issues, Effects And Mitigation
Electric Power Quality-Issues, Effects And Mitigation Guriqbal Singh Assistant Proffesor GZSPTU Campus, Bathinda Abstract Electric power quality relates to non-standard voltage, current or frequency deviation
More informationOutline. Power Quality in Electrical Systems. Alexander Kusko, Sc.D., P.E. Marc T. Thompson, Ph.D.
6/1/05 Outline Power Quality in Electrical Systems by Alexander Kusko, Sc.D., P.E. Marc T. Thompson, Ph.D. Authors Alexander Kusko, Sc.D, Corporate Vice President, Exponent Failure Analysis Associates,
More informationISO Rules Part 500 Facilities Division 502 Technical Requirements Section Wind Aggregated Generating Facilities Technical Requirements
Applicability 1(1) Section 502.1 applies to the ISO, and subject to the provisions of subsections 1(2), (3) and (4) to any: (a) a new wind aggregated generating facility to be connected to the transmission
More informationHPC-9DJ
Manual: Distribution Design Manual Volume 1 Quality of Electricity Supply Standard Number: HPC-5DC-07-0001-2012 Document Control Author Name: Anthony Seneviratne Position: Senior Standards Engineer Document
More informationMEASUREMENT CAMPAIGN AND ASSESSMENT OF THE QUALITY OF SUPPLY IN RES AND DG FACILITIES IN SPAIN
MEASUREMENT CAMPAIGN AND ASSESSMENT OF THE QUALITY OF SUPPLY IN RES AND DG FACILITIES IN SPAIN Eugenio PEREA*, Eduardo ZABALA*, J. Emilio RODRÍGUEZ*, Asier GIL DE MURO*, Hugo GAGO * * * Fundación LABEIN,
More informationC.A Complete electrical network analysis at the tips of your fingers! Power Quality Monitor. Keeping up with the standards
Keeping up with the standards C.A 8352 Power Quality Monitor Complete electrical network analysis at the tips of your fingers! All measurements for complete analysis: powers, harmonics, flicker, symmetry,
More informationPQ Audit - The right choice to ensure power system performance. Mr Lalit Kumar Wasan Tata Power- DDL
PQ Audit - The right choice to ensure power system performance Mr Lalit Kumar Wasan Tata Power- DDL Outline vpower Quality v Present Challenges v Harmonics & Its Impact on DISCOM v Future Challenges Roof-Top
More informationPower Quality Requirements for Connection to the Transmission System
Power Quality Requirements for Connection to the Transmission System Revision: 1.0 Date: September 2015 Introduction and Purpose of this Document The purpose of this document is to provide clarity to Customers
More informationTab 2 Voltage Stresses Switching Transients
Tab 2 Voltage Stresses Switching Transients Distribution System Engineering Course Unit 10 2017 Industry, Inc. All rights reserved. Transient Overvoltages Decay with time, usually within one or two cycles
More informationABB DRIVES Technical guide No. 6 Guide to harmonics with AC drives
ABB DRIVES Technical guide No. 6 Guide to harmonics with AC drives 2 TECHNICAL GUIDE NO. 6 GUIDE TO HARMONICS WITH AC DRIVES Guide to harmonics This guide is part of ABB s technical guide series, describing
More informationPower quality as a reliability problem for electronic equipment
Power quality as a reliability problem for electronic equipment A. Victor A. Anunciada1,3, Hugo Ribeiro2,3 1 Department of Electrical and Computer Engineering, Instituto Superior Técnico, Universidade
More informationVoltage and Current Waveforms Enhancement using Harmonic Filters
Voltage and Current Waveforms Enhancement using Harmonic Filters Rajeb Ibsaim rabsaim@yahoo.com, Azzawia University, Libya Amer Daeri ibnjubair1@yahoo.co.uk Azzawia University, Libya Abstract The demand
More informationA Survey of Voltage Sags and Voltage Swells Phenomena in Power Quality Problems
International Journal of scientific research and management (IJSRM) Volume 1 Issue 9 Pages 458-462 2013 Website: www.ijsrm.in ISSN (e): 2321-3418 A Survey of Voltage Sags and Voltage Swells Phenomena in
More informationHarmonic distortion analysis on the MV and LV distribution networks: problems, influencing factors and possible solutions
Harmonic distortion analysis on the MV and LV distribution networks: problems, influencing factors and possible solutions Fernando Bastião and Humberto Jorge Department of Electrical Engineering and Computers
More informationThe development of the SA grid code on Power Quality emission. Dr. Gerhard Botha 2017/08/08
The development of the SA grid code on Power Quality emission Dr. Gerhard Botha 2017/08/08 Overview What is the Grid Code? What is Power Quality? Power Quality Management Principles Differences Challenges
More informationOVERVIEW OF DVR FOR POWER QUALITY IMPROVEMENT
OVERVIEW OF DVR FOR POWER QUALITY IMPROVEMENT Shyam V. Alaspure 1, Snehal G. Vinchurkar 2, Swapnil D. Raut 1 Electronics & Telecommunication 2 Electronics & Power 3 Computer 1 Lecturer, G.H. Raisoni Polytechnic
More informationReliable Power Meters Multipoint Power Recorder
Reliable Power Meters Multipoint Power Recorder High-speed capability for permanent installation Technical Data What is Full Disclosure Technology? Full Disclosure Technology is built into all Fluke and
More informationPoornima G P. IJECS Volume 3 Issue 6 June, 2014 Page No Page 6453
www.ijecs.in International Journal Of Engineering And Computer Science ISSN:2319-7242 Volume 3 Issue 6 June, 2014 Page No. 6453-6457 Role of Fault Current Limiter in Power System Network Poornima G P.1,
More informationTechnical collection. Cahier technique. no Power Quality. Ph. Ferracci
Technical collection Cahier technique no. 199 Power Quality Ph. Ferracci "Cahiers Techniques" is a collection of documents intended for engineers and technicians, people in the industry who are looking
More information22.0 Harmonics in Industrial Power Systems
1.0 Harmonics in Industrial Power Systems Harmonic frequencies are multiples of the line (fundamental) frequency, which in North America is usually 60 Hz, while it is 50 Hz elsewhere. Figure 1 shows a
More informationPower Quality and Digital Protection Relays
Power Quality and Digital Protection Relays I. Zamora 1, A.J. Mazón 2, V. Valverde, E. Torres, A. Dyśko (*) Department of Electrical Engineering - University of the Basque Country Alda. Urquijo s/n, 48013
More informationPower Quality Monitoring using LabView
I J E E E C International Journal of Electrical, Electronics ISSN No. (Online): 2277-2626 and Computer Engineering 4(2): 59-65(2015) Power Quality Monitoring using LabView Dr. Puneet Pahuja*, Ravi**, Prateek
More informationA critical review-power quality concerns
Journal of Engineering Research and Education Vol. 5 (2008) 21-40 A critical review-power quality concerns K. Anayet, I. Daut, N. Indra, M. Dina, S. Rajendran Power Electronic and Electrical Machine Design
More informationSIGNAL PROCESSING OF POWER QUALITY DISTURBANCES
SIGNAL PROCESSING OF POWER QUALITY DISTURBANCES MATH H. J. BOLLEN IRENE YU-HUA GU IEEE PRESS SERIES I 0N POWER ENGINEERING IEEE PRESS SERIES ON POWER ENGINEERING MOHAMED E. EL-HAWARY, SERIES EDITOR IEEE
More informationReduction of Voltage Imbalance in a Two Feeder Distribution System Using Iupqc
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 10, Issue 7 (July 2014), PP.01-15 Reduction of Voltage Imbalance in a Two Feeder
More informationContents. All Rights Reserved
Code of Practice 290 Issue 1 January 2004 Power Quality Contents 1 Introduction 2 Scope 3 Definitions 4 Elements of Power Quality 5 Power Quality Standards 6 Power Quality Measurement Standards 7 Practical
More informationIntermittent Renewable Resources (Wind and PV) Distribution Connection Code (DCC) At Medium Voltage (MV)
Intermittent Renewable Resources (Wind and PV) Distribution Connection Code (DCC) At Medium Voltage (MV) IRR-DCC-MV 1. Introduction 1 IRR-DCC-MV 2. Scope 1 IRR-DCC-MV 2.1. General 1 IRR-DCC-MV 2.2. Affected
More information