Experiences on using gapless waveform data & synchronized harmonic phasors
|
|
- Doreen Wade
- 6 years ago
- Views:
Transcription
1 1 Panel Session: New Techniques for Power Quality Measurement and Field Experiences 15PESGM3040 Experiences on using gapless waveform data & synchronized harmonic phasors Wilsun Xu University of Alberta July 2015
2 2 Outline Two important developments in PQ data measurement: Gapless recording: waveform data is recorded for days without discontinuity (i.e. gaps) Synchronized waveform: two or more waveforms at different locations are synchronized using GPS
3 3 Outline This presentation is to share the experiences and applications of the above two advanced monitoring features. It also presents an issue that needs research by the Measurement and Instrumentation subcommittee: Gapless data Synchronized waveform data Research need on the definition of synchophasors
4 4 1. Gapless data Three modes of PQ data recording: Continuous waveform snapshots: For example: 12 cycle snapshot for every 1 minute. The results can be waveforms or harmonic spectrums Triggered waveform snapshots: For example: 60 cycle snapshot for a PQ disturbance The results are typically in the form of waveforms Gapless recording Continuously record waveforms for days without any stop Existing USB chips make such mode possible: e.g 64GB for 3 weeks
5 5 What unique advantages does gapless data bring? Some events of interest cannot be captured using the other two modes Failure signatures of a cable How to use trigger mode to record such signatures is not established The mode of continuous snapshots will likely miss the signatures
6 6 One major potential application Signature based equipment condition monitoring (PQ data analytics). For example: cable health monitoring Degree of Cable deterioration Sporadic arcing activities Failure Heart attack Normal condition Normal health Increased partial discharge activities Increasing blood pressure Abnormal cardiac activities * Partial discharge detector * Blood pressure monitor * Waveform analytics * ECG Time
7 7 Data analytics based condition monitoring It was very difficult to capture failure signatures in the past Failure signatures were not well understood Automatic signature capturing was therefore not possible Traditional PQ monitors have gaps in data recording As a result, the data is not adequate for off-line analysis In summary, signature analysis was not possible in the past Gapless recording makes it possible to do off-line analysis With experiences, automatic signature capture will become possible in the future. Power quality monitor may emerge also as an equipment health doctor
8 8 Data analytics based condition monitoring Method for off-line analysis of gapless data Data input Abnormality detection Abnormality extraction Signature analysis Failure characterization Analytics results Signature database Path 1 General purpose condition monitoring scheme Data input Search for specific signatures Signature analysis Failure characterization Analytics results Pattern matching algorithms Signature patterns of interest (from signature database) Path 2 Special purpose condition monitoring scheme
9 9 Data analytics based condition monitoring Waveform abnormalities detected using 15 day gapless data Detected by Current RMS Detected by Voltage RMS Detected by Current Waveform Detected by Voltage Waveform Number of disturbances Hours
10 10 2. Synchronized waveform data It is not difficult to collect synchronized waveform data using GPS these days Some commercial PQ monitors have such capabilities already The challenge is to find useful ways to take advantage of this type of data Two practical applications are given here 1. Addition/cancellation characteristics of harmonics in distribution systems 2. Condition monitoring of transmission cables
11 11 Harmonic addition investigation I Sub Feeder branch Multi-grounded primary feeder Substation Secondary feeder I ST Service transformer Secondary feeder 3f load Service drop Service drop House 1 House 2 House N How do the harmonics from service transformers contribute to those observed at the substation?
12 12 Harmonic addition investigation Synchronized waveform monitoring & analysis: Use substation current waveform as a reference Study the projection of service transformer current on the reference direction Quadrature component I ST Average angle of 3rd harmonic current in 24 hour Substation current Service transformer current In-phase component I Sub Harmonic addition
13 13 Harmonic addition investigation Addition of 3 rd harmonic Percentage(%) addition cancellation In phase component Quadrature component Time(h) 20% Average angle of 3rd harmonic current in 24 hour 15% Substation current Service transformer current Probability 10% cancellation addition % Percentage of the in-phase component (%)
14 14 Harmonic addition investigation Variation range of I ST in phase component for 95% time over 24hours Main finding: low order harmonics do add up significantly
15 15 Transmission cable condition monitoring using synchronized, gapless waveform data 240kV Network 1 2 CT location Cable to be monitored 3 130kV Network Task: determine if the cable has abnormal behaviors Challenges: 1) Since the cable is in a meshed network, both sides need to be monitored to determine if an abnormal response is originated from the cable 2) The CTs locations are not favorable
16 16 Solution: using three synchronized monitors Addition of the waveforms from the first 2 meters gives the left side current of the cable The voltage and current at two ends are then analyzed to screen for abnormal events The location of events (inside or outside the cable) are determined using differential-relay fault detection like algorithms About 15 events were captured for a 3 week period. All events are determined as outside of the cable. These disturbances could not be captured using common PQ indices
17 17 Sample results Left side Right side
18 18 3. A need for research on the concept of phasor Synchronize data over different locations GPS Synchronize data over different time How? Problem to solve: Estimate the system impedance Z eq Using natural V & I disturbances = Upstream system + _ Z eq E eq Monitor Location V I Downstream Load
19 Current (A) 19 Synchronize data over time = Window 1 Window 2A I 1 I 2 Window 2B Data point (128 points per cycle) How to position the 2 nd window to get phasors V 2 and I 2? Note: the frequency is not exactly 60Hz and is unknown
20 20 Synchronize data over time Problem 2: power-angle curve over time (from PMU) d t 1 t2 How the windows at t 1 and t 2 are synchronized so that d t1 and d t2 are related to each other in a technically valid way? Again: the frequency is not exactly 60Hz and is unknown t
21 21 Definition of frequency and angle If both frequency and angle are changing. There are two interpretations of them: Constant frequency with a changing angle Constant angle with a changing frequency Which interpretation is technically sound? What is the implication on the use of PMU results (frequencies are different at two locations and yet there is a phase angle difference)?
22 22 Summary & conclusions Gapless monitoring is a useful platform for complex offline-based signature analysis Two example applications of synchronized waveform data were shown. Harmonic phasor analysis is a interesting killer application of synchronized data There is a need to research the definitions of angle and frequency, like what has been done to the definitions of P & Q under harmonic conditions
BUS2000 Busbar Differential Protection System
BUS2000 Busbar Differential Protection System Differential overcurrent system with percentage restraint protection 1 Typical Busbar Arrangements Single Busbar Double Busbar with Coupler Breaker and a Half
More informationNew Methods to Mitigate Distribution System Harmonics
Alberta Power Industry Consortium 214 Power & Energy Innovation Forum New Methods to Mitigate Distribution System Harmonics By Wilsun Xu Power Disturbance & Signaling Research Lab November 5, 214 Outline
More informationAutomated Fault Detection With PQ Monitors
Automated Fault Detection With PQ Monitors Theo Laughner, PE Sr. Program Manager of Power Quality Acknowledgements: Anthony Murphy, PE October 12, 2015 Background Case Studies (5) Needs Tools Conclusion
More informationIEEE 2015 The Institute of Electrical and Electronic Engineers, Inc.
IEEE Power & Energy Society May 2015 TECHNICAL REPORT PES-TRXX Electric Signatures of Power Equipment Failures PREPARED BY THE Transmission & Distribution Committee Power Quality Subcommittee Working Group
More informationFault Localization using Wavelet Transforms in 132kV Transmission Lines
ENGINEER - Vo). XXXXII, No. 04, pp. [95-104], 2009 The Institution of Engineers, Sri Lanka Fault Localization using Wavelet Transforms in 132kV Transmission Lines J.V.U.P. Jayatunga, P.S.N. De Silva and
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 informationFault Location Using Sparse Wide Area Measurements
319 Study Committee B5 Colloquium October 19-24, 2009 Jeju Island, Korea Fault Location Using Sparse Wide Area Measurements KEZUNOVIC, M., DUTTA, P. (Texas A & M University, USA) Summary Transmission line
More informationDigital Fault Recorder Deployment at HVDC Converter Stations
Digital Fault Recorder Deployment at HVDC Converter Stations On line continuous monitoring at HVDC Converter Stations is an important asset in determining overall system performance and an essential diagnostic
More informationTHE ROLE OF SYNCHROPHASORS IN THE INTEGRATION OF DISTRIBUTED ENERGY RESOURCES
THE OLE OF SYNCHOPHASOS IN THE INTEGATION OF DISTIBUTED ENEGY ESOUCES Alexander APOSTOLOV OMICON electronics - USA alex.apostolov@omicronusa.com ABSTACT The introduction of M and P class Synchrophasors
More informationMonitoring Locations in Smart Grids 14PESGM2391
1 Panel Session PQ Monitoring in the Era of Smart Grids Monitoring Locations in Smart Grids 14PESGM2391 Francisc Zavoda IREQ (HQ) QUÉBEC, CANADA Power System and Monitoring Locations 2 Power System Classic
More informationAccurate Synchrophasor Estimation to Support the Islanding Maneuver of Active Distribution Networks
Working Group Meeting June 5-6, 2012 Accurate Synchrophasor Estimation to Support the Islanding Maneuver of Active Distribution Networks Prof. Mario Paolone EPFL, Switzerland - Distributed Electrical Systems
More informationKončar TMS - Bushing monitoring
Končar TMS - Bushing monitoring Many recent studies have shown that bushing failure is one of the most common causes of transformer failure. Thus need for bushing diagnostic and monitoring system has risen.
More informationHarmonic Distortion Levels Measured at The Enmax Substations
Harmonic Distortion Levels Measured at The Enmax Substations This report documents the findings on the harmonic voltage and current levels at ENMAX Power Corporation (EPC) substations. ENMAX is concerned
More informationA Transformation Technique for Decoupling Power Networks
University of Alberta Department of Electrical and Computer Engineering A Transformation Technique for Decoupling Power Networks Iraj Rahimi Pordanjani, Yunfei Wang, and Wilsun Xu, Overview 2 Introduction
More informationR10. IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec SWITCH GEAR AND PROTECTION. (Electrical and Electronics Engineering)
R10 Set No. 1 Code No: R41023 1. a) Explain how arc is initiated and sustained in a circuit breaker when the CB controls separates. b) The following data refers to a 3-phase, 50 Hz generator: emf between
More informationFault Induced Delayed Voltage Recovery (FIDVR) Advisory
Fault Induced Delayed Voltage Recovery (FIDVR) Advisory NERC Synchronized Measurement Subcommittee (SMS) NASPI Engineering Analysis Task Team (EATT) July 2015 Why the Advisory? The goal of this advisory
More informationVOLTAGE sag and interruption are the most important
806 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 20, NO. 2, MAY 2005 Voltage Sag State Estimation for Power Distribution Systems Bin Wang, Wilsun Xu, Senior Member, IEEE, and Zhencun Pan Abstract The increased
More informationBus protection with a differential relay. When there is no fault, the algebraic sum of circuit currents is zero
Bus protection with a differential relay. When there is no fault, the algebraic sum of circuit currents is zero Consider a bus and its associated circuits consisting of lines or transformers. The algebraic
More informationNotes 1: Introduction to Distribution Systems
Notes 1: Introduction to Distribution Systems 1.0 Introduction Power systems are comprised of 3 basic electrical subsystems. Generation subsystem Transmission subsystem Distribution subsystem The subtransmission
More informationENG52 WP1 status and plans TU Eindhoven Project meeting, Glasgow, Vladimir Ćuk, Fei Ni,
ENG52 WP1 status and plans TU Eindhoven Project meeting, Glasgow, 03.02.2016. Vladimir Ćuk, v.cuk@tue.nl Fei Ni, F.Ni@tue.nl TU Eindhoven Content Goals of TU Eindhoven within WP1 Status of the work: Work
More informationNOVEL PROTECTION SYSTEMS FOR ARC FURNACE TRANSFORMERS
NOVEL PROTECTION SYSTEMS FOR ARC FURNACE TRANSFORMERS Ljubomir KOJOVIC Cooper Power Systems - U.S.A. Lkojovic@cooperpower.com INTRODUCTION In steel facilities that use Electric Arc Furnaces (EAFs) to manufacture
More informationGRID RELIABILITY MONITORING
GRID RELIABILITY MONITORING Using Smart Grids WASS TM - A SynchroPhasor Technology based Real Time Wide Area Situational Awareness Software for Monitoring, Detection and Diagnosis of Power System Issues
More informationDeep Data from Optical Sensors
1 Deep Data from Optical Sensors Farnoosh Rahmatian NuGrid Power Corp August 7, 2018 IEEE PES GM, Portland, OR 2018 NuGrid Power Corp 2 Outline What is a deep data sensor? Optical Voltage/Current Sensors
More informationA Guide to the DC Decay of Fault Current and X/R Ratios
A Guide to the DC Decay of Fault Current and X/R Ratios Introduction This guide presents a guide to the theory of DC decay of fault currents and X/R ratios and the calculation of these values in Ipsa.
More informationPSL - Power Sensors Ltd
PSL - Power Sensors Ltd a Division of Power Standards > Founded in 2000 - Alameda CA, USA > Power Quality Experts - IEC standards > Manufacturer of leading Power Quality monitors We Capture All Bad Power
More informationSHORT CIRCUIT ANALYSIS OF 220/132 KV SUBSTATION BY USING ETAP
SHORT CIRCUIT ANALYSIS OF 220/132 KV SUBSTATION BY USING ETAP Kiran V. Natkar 1, Naveen Kumar 2 1 Student, M.E., Electrical Power System, MSS CET/ Dr. B.A.M. University, (India) 2 Electrical Power System,
More informationABB Inc. April 1, 2016 Slide 1
Galina S. Antonova, ABB Inc., i-pcgrid Workshop - 2016 Combining subsynchronous oscillations detection and synchrophasor measurements to increase power system stability April 1, 2016 Slide 1 Sub synchronous
More informationTransformer Protection
Transformer Protection Transformer Protection Outline Fuses Protection Example Overcurrent Protection Differential Relaying Current Matching Phase Shift Compensation Tap Changing Under Load Magnetizing
More informationQualitrol s PMU Technologies
Qualitrol s PMU Technologies IDM NASPI Conference June 2008 BEN 6000 Agenda 1. Qualitrol s experience 2. Recording functions that compliment Phasor Measurement 3. A Multi function PMU 4. PMU Case Study
More informationWind Power Facility Technical Requirements CHANGE HISTORY
CHANGE HISTORY DATE VERSION DETAIL CHANGED BY November 15, 2004 Page 2 of 24 TABLE OF CONTENTS LIST OF TABLES...5 LIST OF FIGURES...5 1.0 INTRODUCTION...6 1.1 Purpose of the Wind Power Facility Technical
More informationReducing the Effects of Short Circuit Faults on Sensitive Loads in Distribution Systems
Reducing the Effects of Short Circuit Faults on Sensitive Loads in Distribution Systems Alexander Apostolov AREVA T&D Automation I. INTRODUCTION The electric utilities industry is going through significant
More informationBus Protection Fundamentals
Bus Protection Fundamentals Terrence Smith GE Grid Solutions 2017 Texas A&M Protective Relay Conference Bus Protection Requirements High bus fault currents due to large number of circuits connected: CT
More informationNetwork Analyzer for Low-, Medium- and High-Voltage Networks
Technical data Network nalyzer for Low-, Medium- and High-Voltage Networks Model PQ-Box 150 1 Fault detection 1 Evaluation of voltage quality according to EN50160 and IEC61000-2-2 (2-4) 1 FFT nalysis up
More informationIntroduction to micropmu. PSL Australasian Symposium 2017 September 29 Thomas Pua Product Engineer
Introduction to micropmu PSL Australasian Symposium 2017 September 29 Thomas Pua Product Engineer What are synchrophasors? What are synchrophasors? Synchrophasors compare the phase angle of the voltage
More informationDISTRIBUTED GENERATION (DG) has recently gained
1758 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 22, NO. 3, JULY 2007 A Power Line Signaling Based Technique for Anti-Islanding Protection of Distributed Generators Part I: Scheme and Analysis Wilsun Xu,
More informationTHE IMPACT OF NETWORK SPLITTING ON FAULT LEVELS AND OTHER PERFORMANCE MEASURES
THE IMPACT OF NETWORK SPLITTING ON FAULT LEVELS AND OTHER PERFORMANCE MEASURES C.E.T. Foote*, G.W. Ault*, J.R. McDonald*, A.J. Beddoes *University of Strathclyde, UK EA Technology Limited, UK c.foote@eee.strath.ac.uk
More informationCHAPTER 5 POWER QUALITY IMPROVEMENT BY USING POWER ACTIVE FILTERS
86 CHAPTER 5 POWER QUALITY IMPROVEMENT BY USING POWER ACTIVE FILTERS 5.1 POWER QUALITY IMPROVEMENT This chapter deals with the harmonic elimination in Power System by adopting various methods. Due to the
More informationUSING SUPERIMPOSED PRINCIPLES (DELTA) IN PROTECTION TECHNIQUES IN AN INCREASINGLY CHALLENGING POWER NETWORK
USING SUPERIMPOSED PRINCIPLES (DELTA) IN PROTECTION TECHNIQUES IN AN INCREASINGLY CHALLENGING POWER NETWORK P Horton, S Swain patricia.horton@ge.com, simon.swain@ge.com UK INTRODUCTION Superimposed techniques
More informationAdvanced Software Developments for Automated Power Quality Assessment Using DFR Data
Advanced Software Developments for Automated Power Quality Assessment Using DFR Data M. Kezunovic, X. Xu Texas A&M University Y. Liao ABB ETI, Raleigh, NC Abstract The power quality (PQ) meters are usually
More informationModern transformer relays include a comprehensive set of protective elements to protect transformers from faults and abnormal operating conditions
1 Transmission transformers are important links in the bulk power system. They allow transfer of power from generation centers, up to the high-voltage grid, and to bulk electric substations for distribution
More informationWide Area Monitoring with Phasor Measurement Data
Wide Area Monitoring with Phasor Measurement Data Dr. Markus Wache Siemens E D EA, Nuremberg, Germany Content Content Basics of Phasor Measurement Realization of PMUs Power System Stability Standard IEEE
More informationALP-UDR Universal Detection Relay user-defined protection, automation, and monitoring
ALP-UDR Universal Detection Relay user-defined protection, automation, and monitoring The first Real-Time Protection and Automation platform that can be adapted to a wide variety of applications. While
More informationConventional Paper-II-2011 Part-1A
Conventional Paper-II-2011 Part-1A 1(a) (b) (c) (d) (e) (f) (g) (h) The purpose of providing dummy coils in the armature of a DC machine is to: (A) Increase voltage induced (B) Decrease the armature resistance
More informationUniversity of Alberta
University of Alberta Harmonic Impedance and Harmonic Source Determination Based on Field Measurements by Edwin Enrique Nino Hernandez A thesis submitted to the Faculty of Graduate Studies and Research
More informationA New Subsynchronous Oscillation (SSO) Relay for Renewable Generation and Series Compensated Transmission Systems
21, rue d Artois, F-75008 PARIS CIGRE US National Committee http : //www.cigre.org 2015 Grid of the Future Symposium A New Subsynchronous Oscillation (SSO) Relay for Renewable Generation and Series Compensated
More informationProtection of Microgrids Using Differential Relays
1 Protection of Microgrids Using Differential Relays Manjula Dewadasa, Member, IEEE, Arindam Ghosh, Fellow, IEEE and Gerard Ledwich, Senior Member, IEEE Abstract A microgrid provides economical and reliable
More informationVerification test of fault locator on a 6.6 kv power distribution line
627 Verification test of fault locator on a 6.6 kv power distribution line Y. Mitoma1, H. Yoshizumi1, S. Uematsu1, T. Ishii1, K. Amano2 & T. Tanaka2 1 2 East Japan Railway Company, Japan Fujikura Ltd.,
More information3 Phase Power Quality Analy er
3 Phase Power Quality Analy er BlackBox G4500 The 3 Phases Portable Power Quality Analyzers Discover Outstanding Features The BlackBox portable series power quality analyzer takes power quality monitoring
More informationOvercurrent relays coordination using MATLAB model
JEMT 6 (2018) 8-15 ISSN 2053-3535 Overcurrent relays coordination using MATLAB model A. Akhikpemelo 1 *, M. J. E. Evbogbai 2 and M. S. Okundamiya 3 1 Department of Electrical and Electronic Engineering,
More informationLocating the Source of Events in Power Distribution Systems Using Micro-PMU Data
1 Locating the Source of Events in Power Distribution Systems Using Micro-PMU Data Mohammad Farajollahi, Student Member, IEEE, Alireza Shahsavari, Student Member, IEEE, Emma Stewart, Senior Member, IEEE,
More informationUnit 3 Magnetism...21 Introduction The Natural Magnet Magnetic Polarities Magnetic Compass...21
Chapter 1 Electrical Fundamentals Unit 1 Matter...3 Introduction...3 1.1 Matter...3 1.2 Atomic Theory...3 1.3 Law of Electrical Charges...4 1.4 Law of Atomic Charges...4 Negative Atomic Charge...4 Positive
More informationMinnesota Power Systems Conference 2015 Improving System Protection Reliability and Security
Minnesota Power Systems Conference 2015 Improving System Protection Reliability and Security Steve Turner Senior Application Engineer Beckwith Electric Company Introduction Summarize conclusions from NERC
More informationHV / MV / LV electrical network quality analyzers Class A. Communication port: local, modem, integrated Ethernet, multi-point
2010 MAP Range HV / MV / LV electrical network quality analyzers Class A > Network quality Analyzers PRODUCT ADVANTAGES COMPLIANT with the EN 61000-4-30 standard, Class A DETECTION of the fault LOCATION
More informationPreface...x Chapter 1 Electrical Fundamentals
Preface...x Chapter 1 Electrical Fundamentals Unit 1 Matter...3 Introduction...3 1.1 Matter...3 1.2 Atomic Theory...3 1.3 Law of Electrical Charges...4 1.4 Law of Atomic Charges...5 Negative Atomic Charge...5
More informationARC FLASH HAZARD ANALYSIS AND MITIGATION
ARC FLASH HAZARD ANALYSIS AND MITIGATION J.C. Das IEEE PRESS SERIES 0N POWER ENGINEERING Mohamed E. El-Hawary, Series Editor IEEE IEEE PRESS WILEY A JOHN WILEY & SONS, INC., PUBLICATION CONTENTS Foreword
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 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 informationTransformer Waveforms
OBJECTIVE EXPERIMENT Transformer Waveforms Steady-State Testing and Performance of Single-Phase Transformers Waveforms The voltage regulation and efficiency of a distribution system are affected by the
More informationExtensive LV cable network. Figure 1: Simplified SLD of the transformer and associated LV network
Copyright 2017 ABB. All rights reserved. 1. Introduction Many distribution networks around the world have limited earth-fault current by a resistor located in the LV winding neutral point of for example
More informationPRC Compliance Using Bitronics 70 Series Recorders
PRC-002-2 Compliance Using Bitronics 70 Series Recorders Introduction The North American Electric Reliability Council (NERC) has defined standards for disturbance monitoring and reporting requirements
More informationProtection Basics Presented by John S. Levine, P.E. Levine Lectronics and Lectric, Inc GE Consumer & Industrial Multilin
Protection Basics Presented by John S. Levine, P.E. Levine Lectronics and Lectric, Inc. 770 565-1556 John@L-3.com 1 Protection Fundamentals By John Levine 2 Introductions Tools Outline Enervista Launchpad
More informationApplication for A Sub-harmonic Protection Relay. ERLPhase Power Technologies
Application for A Sub-harmonic Protection Relay ERLPhase Power Technologies 1 Outline Introduction System Event at Xcel Energy Event Analysis Microprocessor based relay hardware architecture Sub harmonic
More informationPHASOR TECHNOLOGY AND REAL-TIME DYNAMICS MONITORING SYSTEM (RTDMS) FREQUENTLY ASKED QUESTIONS (FAQS)
PHASOR TECHNOLOGY AND REAL-TIME DYNAMICS MONITORING SYSTEM (RTDMS) FREQUENTLY ASKED QUESTIONS (FAQS) Phasor Technology Overview 1. What is a Phasor? Phasor is a quantity with magnitude and phase (with
More informationPower Quality Analyzer / High Frequency Recorder
Technical data Power Quality nalyzer / High Frequency Recorder Model PQ-Box 300 1 Fault detection 1 Evaluation of voltage quality according to EN50160 und IEC61000-2-2/-2-4 1 Permanent FFT nalysis from
More informationLow Voltage Grid Monitoring
Smart Grid Gotland Subproject Power Quality Low Voltage Grid Monitoring EUW Amsterdam 2017-10-04 Why monitor the low voltage grid? Power outages have so far been identified only by customers, not acceptable
More informationAriadna Instruments. Power cable identifier & LV live network phase and feeder identifier
Ariadna Instruments Power cable identifier & LV live network phase and feeder identifier Cable identifiers Cable identifiers There are situations where it is necessary a correctly identification the distribution
More informationENHANCED DISTANCE PROTECTION FOR SERIES COMPENSATED TRANSMISSION LINES
ENHANCED DISTANCE PROTECTION FOR SERIES COMPENSATED TRANSMISSION LINES N. Perera 1, A. Dasgupta 2, K. Narendra 1, K. Ponram 3, R. Midence 1, A. Oliveira 1 ERLPhase Power Technologies Ltd. 1 74 Scurfield
More informationPhase-phase/phase-neutral: 24/13.8 kv star, 13.8 kv delta, 12/6.9 kv star.
Summary Of Interconnection Technical Guidelines for Renewable Energy Systems 0-100 kw under Standard Offer Contract (Extract from JPS Guide to Interconnection of Distributed Generation) This document is
More informationBenefits of SFRA - Case Studies
6 th International Conference on Large Power Transformers- Modern Trends Benefits of SFRA - Case Studies B B Ahir Gujarat Energy Transmission Corporation Limited 1 Outline Condition Monitoring in GETCO
More informationCatastrophic Relay Misoperations and Successful Relay Operation
Catastrophic Relay Misoperations and Successful Relay Operation Steve Turner (Beckwith Electric Co., Inc.) Introduction This paper provides detailed technical analysis of several catastrophic relay misoperations
More informationMulticonverter Unified Power-Quality Conditioning System: MC-UPQC T.Charan Singh, L.Kishore, T.Sripal Reddy
Multiconverter Unified Power-Quality Conditioning System: MC-UPQC T.Charan Singh, L.Kishore, T.Sripal Reddy Abstract This paper presents a new unified power-quality conditioning system (MC-UPQC), capable
More informationSIEMOS PQ The Multi-Functional Power Quality Analyzer for Low and Medium-Voltage Networks
www.reinhausen.com SIEMOS PQ The Multi-Functional Power Quality Analyzer for Low and Medium-Voltage Networks SIEMOS PQ the power quality analyzer for every application The SIEMOS PQ three-phase network
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 informationOperation Analysis of Current Transformer with Transient Performance Analysis Using EMTP Software
Operation Analysis of Current Transformer with Transient Performance Analysis Using EMTP Software Govind Pandya 1, Rahul Umre 2, Aditya Pandey 3 Assistant professor, Dept. of Electrical & Electronics,
More informationSynchrophasor Technology PMU Use Case Examples
1 IEEE Tutorial on Use of Synchrophasors in Grid Operations - Oscillation Source Detection and Operational Use of Synchrophasors Synchrophasor Technology PMU Use Case Examples Sarma (NDR) Nuthalapati,
More informationSpecialists in HV and MV test and diagnostics. Testing in Substations
Specialists in HV and MV test and diagnostics Testing in Substations Testing in Substations Testing in Substations At 4fores we specialize in the diagnosis and measurement of all types of existing technologies
More informationISSUES OF SYSTEM AND CONTROL INTERACTIONS IN ELECTRIC POWER SYSTEMS
ISSUES OF SYSTEM AND CONTROL INTERACTIONS IN ELECTRIC POWER SYSTEMS INDO-US Workshop October 2009, I.I.T. Kanpur INTRODUCTION Electric Power Systems are very large, spread over a wide geographical area
More informationHow to maximize reliability using an alternative distribution system for critical loads
White Paper WP024001EN How to maximize reliability using an alternative distribution system for critical loads Executive summary The electric power industry has several different distribution topologies
More informationCHAPTER 3 REVIEW OF POWER TRANSFORMER PROTECTION SCHEMES
CHAPTER 3 REVIEW OF POWER TRANSFORMER PROTECTION SCHEMES 3.1. Introduction Power Transformer is the nerve centre of any power distribution system. The capacity of power transformers is generally decided
More informationStudy and Simulation of Phasor Measurement Unit for Wide Area Measurement System
Study and Simulation of Phasor Measurement Unit for Wide Area Measurement System Ms.Darsana M. Nair Mr. Rishi Menon Mr. Aby Joseph PG Scholar Assistant Professor Principal Engineer Dept. of EEE Dept. of
More informationAPPLICATION OF PMUS FOR MONITORING A 50 KV DISTRIBUTION GRID
APPLICATION OF PMUS FOR MONITORING A 5 KV DISTRIBUTION GRID Gert RIETVELD Arjen JONGEPIER Joeri VAN SETERS Marco VISSER VSL The Netherlands DNWG The Netherlands DNWG The Netherlands DNWG The Netherlands
More informationEPS AUSTRALIA SERVICES HV TESTING & COMMISSIONING CAPABILITY
EPS AUSTRALIA SERVICES HV TESTING & COMMISSIONING CAPABILITY EPS AUSTRALIA SERVICES COMPANY OVERVIEW EPS is a recognised company specialising in Electrical, Instrumentation, Structural, Mechanical and
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 22 1 Today Homework 5 questions Homework 6 discussion More on
More informationSmart Grid Where We Are Today?
1 Smart Grid Where We Are Today? Meliha B. Selak, P. Eng. IEEE PES DLP Lecturer melihas@ieee.org 2014 IEEE ISGT Asia, Kuala Lumpur 22 nd May 2014 2 Generation Transmission Distribution Load Power System
More informationThis webinar brought to you by The Relion Product Family Next Generation Protection and Control IEDs from ABB
This webinar brought to you by The Relion Product Family Next Generation Protection and Control IEDs from ABB Relion. Thinking beyond the box. Designed to seamlessly consolidate functions, Relion relays
More informationA P + M Phasor Measurement Unit
Carlo Muscas University of Cagliari, Italy A P + M Phasor Measurement Unit Workshop Synchrophasor estimation processes for Phasor Measurement Units: algorithms and metrological characterization December
More informationFor the electronic measurement of current: DC, AC, pulsed..., with galvanic separation between the primary and the secondary circuit.
Current transducer ITC 2000-S/SP2 N = 2000 A For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation between the primary and the secondary circuit. Features Bipolar and insulated
More informationImpact of Incipient Faults on Sensitive Protection
Impact of Incipient Faults on Sensitive Protection Zhihan Xu GE Grid Solutions, LLC Ilia Voloh GE Grid Solutions, LLC Leonardo Torelli CSE-Uniserve Abstract Incipient faults first represent a challenge
More informationTask Force on Synchrophasor Protection Applications NASPI Engineering Analysis Task Team Matthew Rhodes 3/22/16
NASPI White Paper: Integrating Synchrophasor Technology into Power System Protection Applications Update Report Task Force on Synchrophasor Protection Applications NASPI Engineering Analysis Task Team
More informationNetwork Analyzer for Low-, Medium- and High-Voltage Networks
Technical data Network nalyzer for Low-, Medium- and High-Voltage Networks Model PQ-Box 100 1 Fault detection 1 Evaluation of voltage quality according to EN50160 and IEC61000-2-2 (2-4) 1 Fault recorder
More informationPQ-Box 100 Network Analyzer for Low-, Medium- and High-Voltage Networks
GB Technical data Issue 06/2009 PQ-Box 100 Network Analyzer for Low-, Medium- and High-Voltage Networks Fault detection Evaluation of voltage quality according to EN50160 and IEC61000-2-2 Fault recorder
More informationSarma (NDR) Nuthalapati, PhD
SYNCHROPHASOR TECHNOLOGY PMU USE CASE EXAMPLES Sarma (NDR) Nuthalapati, PhD Research Scientist Texas A&M University, College Station, TX Control Room Solutions Task Team NASPI Work Group meeting and first
More informationUsing a Multiple Analog Input Distance Relay as a DFR
Using a Multiple Analog Input Distance Relay as a DFR Dennis Denison Senior Transmission Specialist Entergy Rich Hunt, M.S., P.E. Senior Field Application Engineer NxtPhase T&D Corporation Presented at
More informationEvaluating the Impact of Increasing System Fault Currents on Protection
Evaluating the Impact of Increasing System Fault Currents on Protection Zhihan Xu, Ilia Voloh GE Grid Solutions, LLC Mohsen Khanbeigi Hydro One Abstract Every year the capacity of power systems is increasing,
More information86 chapter 2 Transformers
86 chapter 2 Transformers Wb 1.2x10 3 0 1/60 2/60 3/60 4/60 5/60 6/60 t (sec) 1.2x10 3 FIGURE P2.2 2.3 A single-phase transformer has 800 turns on the primary winding and 400 turns on the secondary winding.
More informationEH2741 Communication and Control in Electric Power Systems Lecture 2
KTH ROYAL INSTITUTE OF TECHNOLOGY EH2741 Communication and Control in Electric Power Systems Lecture 2 Lars Nordström larsno@kth.se Course map Outline Transmission Grids vs Distribution grids Primary Equipment
More informationDIFFERENTIAL PROTECTION METHODOLOGY FOR ARBITRARY THREE-PHASE POWER TRANSFORMERS
DFFERENTAL PROTECTON METHODOLOGY FOR ARBTRARY THREE-PHASE POWER TRANSFORMERS Z. Gaji ABB AB-SA Products, Sweden; zoran.gajic@se.abb.com Keywords: power transformer, phase shifting transformer, converter
More informationA PQ Case Study CS 36 HOSP 14. A Case Study OF Harmonics Mitigation in a Hospital and its Benefits
CS 36 HOSP 14 36 Abstract A leading hospital in southern India faced chronic problems in terms of humming noise in capacitor bank, its failure, high temperature in transformer, and disturbances on the
More informationPQube 3 Specifications
PQube 3 Specifications Reference conditions for factory tests: 19~25 C, 10%~70% RH MAINS VOLTAGE MEASURING CHANNELS Measurement Channels Power Configuration/ Range of Nominal Input Voltage 3 Line to Neutral,
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 information