This document discusses power quality, harmonics, and accuracy standards. It provides an agenda that covers definitions of power quality, improving power quality through solutions like power factor correction, power quality in SATEC products which provide detailed analysis and event logging, and accuracy standards for measurements. Key points covered include definitions of parameters like harmonics, interruptions, and voltage variations, international standards for limits like IEEE 1159 and EN50160, and how meter and CT accuracy classes are determined based on testing to standards like IEC 62053 and 62044.
A power quality presentation includes definitions of power quality, most common power quality problems and the solutions, standard carves, and practical example of an active filter. Presented by - Eng. Shemy Elhady
Power Quality is a combination of Voltage profile, Frequency profile, Harmonics contain and reliability of power supply.
The Power Quality is defined as the degree to which the power supply approaches the ideal case of stable, uninterrupted, zero distortion and disturbance free supply.
A power quality presentation includes definitions of power quality, most common power quality problems and the solutions, standard carves, and practical example of an active filter. Presented by - Eng. Shemy Elhady
Power Quality is a combination of Voltage profile, Frequency profile, Harmonics contain and reliability of power supply.
The Power Quality is defined as the degree to which the power supply approaches the ideal case of stable, uninterrupted, zero distortion and disturbance free supply.
Introduction to Power Quality: Terms and definitions of transients,
Long Duration Voltage Variations: under Voltage, Under Voltage and Sustained Interruptions
; Short Duration Voltage Variations: interruption, Sag, Swell; Voltage Imbalance; Notching D C offset,; waveform distortion; voltage fluctuation; power frequency variations
The cost of electrical events – surges, sags and brownouts – to industry. Power quality terms defined. Power conditioner/voltage regulation solutions compared.
Introduction: Definition & Reasons of Occurrence of following Voltage Dip, Brief voltage increases, Brief voltage interruption, Transients, Voltage Notches, Flickers, Distortion, Un-balance. Power Quality Indices,Limits of Harmonic Distortion according to IEEE, IEC, EN and NORSOK limits.Brief Introduction of Power quality Standards: IEC 61000-2-5,IEC 61000-2-1, IEC 1159 ( Categories of Power quality variation according to IEEE 1159 standard with their relevant Spectral content, Duration of occurrence & Magnitude)
Power Quality Basics_Complex Compatibility_AclaraAclara
Power Quality is a major concern to utility customers and the utility. For the energy consumer, the economic impact of power disturbances can range from hundreds of dollars in equipment repair to millions of dollars in production losses and downtime. For utilities, disturbances lead to customer dissatisfaction and losses in load and revenue.
This presentation clarifies the unique electrical relationship between utility and customers relative to Power Quality. Introducing Power Quality terminology, tools to determine compatibility, and data that is available for analysis.
Introduction
Power Quality Problems
Power Quality Measurement Devices
Power Quality Terminology
Power Quality Standards
Unbundled Power Quality Services
Power Quality Monitoring
Benefits of Power Quality
Conclusion
References
Unit-V
Measurement and Solving of Power Quality Problems: Power quality measurement devices- Harmonic Analyzer , Transient Disturbance Analyzer, wiring and grounding tester, Flicker Meter, Oscilloscope, multi-meter etc. Introduction to Custom Power Devices-Network Reconfiguration devices; Load compensation and voltage regulation using DSTATCOM; protecting sensitive loads using DVR; Unified power Quality Conditioner. (UPQC)
Practical Power System Harmonics, Earthing and Power Quality - Problems and S...Living Online
The power system harmonics, earthing and power quality workshop is a comprehensive, highly practical and interactive course dealing with the various types of power quality problems that have a wide ranging effect on the power systems equipment and apparatus in any plant. You will have the opportunity to learn and discuss the fundamentals of power quality problems such as surges and voltage sags. Other problems having wide ranging effects on power system equipment such as voltage swells, voltage fluctuations, supply interruptions, frequency variations, harmonics and noise shall also be discussed in detail. Issues related to control of the occurrence of these problems by appropriate system design and mitigation of the effects of these by adoption of appropriate protective measures and by the addition of power conditioning equipment shall be discussed. Also, aspects related to designing of the systems, proper installation practices, analysis of the probable reasons and corrective measures will be discussed in detail. Practical examples from actual projects will be used extensively to illustrate the principles and drive home the point.
The material is covered by means of an interactive lecturing style, with plenty of practical examples and realistic case studies derived from real work performed in this area
MORE INFORMATION: http://www.idc-online.com/content/practical-power-system-harmonics-earthing-and-power-quality-problems-and-solutions-8
Introduction to Power Quality: Terms and definitions of transients,
Long Duration Voltage Variations: under Voltage, Under Voltage and Sustained Interruptions
; Short Duration Voltage Variations: interruption, Sag, Swell; Voltage Imbalance; Notching D C offset,; waveform distortion; voltage fluctuation; power frequency variations
The cost of electrical events – surges, sags and brownouts – to industry. Power quality terms defined. Power conditioner/voltage regulation solutions compared.
Introduction: Definition & Reasons of Occurrence of following Voltage Dip, Brief voltage increases, Brief voltage interruption, Transients, Voltage Notches, Flickers, Distortion, Un-balance. Power Quality Indices,Limits of Harmonic Distortion according to IEEE, IEC, EN and NORSOK limits.Brief Introduction of Power quality Standards: IEC 61000-2-5,IEC 61000-2-1, IEC 1159 ( Categories of Power quality variation according to IEEE 1159 standard with their relevant Spectral content, Duration of occurrence & Magnitude)
Power Quality Basics_Complex Compatibility_AclaraAclara
Power Quality is a major concern to utility customers and the utility. For the energy consumer, the economic impact of power disturbances can range from hundreds of dollars in equipment repair to millions of dollars in production losses and downtime. For utilities, disturbances lead to customer dissatisfaction and losses in load and revenue.
This presentation clarifies the unique electrical relationship between utility and customers relative to Power Quality. Introducing Power Quality terminology, tools to determine compatibility, and data that is available for analysis.
Introduction
Power Quality Problems
Power Quality Measurement Devices
Power Quality Terminology
Power Quality Standards
Unbundled Power Quality Services
Power Quality Monitoring
Benefits of Power Quality
Conclusion
References
Unit-V
Measurement and Solving of Power Quality Problems: Power quality measurement devices- Harmonic Analyzer , Transient Disturbance Analyzer, wiring and grounding tester, Flicker Meter, Oscilloscope, multi-meter etc. Introduction to Custom Power Devices-Network Reconfiguration devices; Load compensation and voltage regulation using DSTATCOM; protecting sensitive loads using DVR; Unified power Quality Conditioner. (UPQC)
Practical Power System Harmonics, Earthing and Power Quality - Problems and S...Living Online
The power system harmonics, earthing and power quality workshop is a comprehensive, highly practical and interactive course dealing with the various types of power quality problems that have a wide ranging effect on the power systems equipment and apparatus in any plant. You will have the opportunity to learn and discuss the fundamentals of power quality problems such as surges and voltage sags. Other problems having wide ranging effects on power system equipment such as voltage swells, voltage fluctuations, supply interruptions, frequency variations, harmonics and noise shall also be discussed in detail. Issues related to control of the occurrence of these problems by appropriate system design and mitigation of the effects of these by adoption of appropriate protective measures and by the addition of power conditioning equipment shall be discussed. Also, aspects related to designing of the systems, proper installation practices, analysis of the probable reasons and corrective measures will be discussed in detail. Practical examples from actual projects will be used extensively to illustrate the principles and drive home the point.
The material is covered by means of an interactive lecturing style, with plenty of practical examples and realistic case studies derived from real work performed in this area
MORE INFORMATION: http://www.idc-online.com/content/practical-power-system-harmonics-earthing-and-power-quality-problems-and-solutions-8
The webinar focused on the guideline differences associated with low voltage systems. Al Archambault, Director of Sales, used the installation of low voltage Adjustable Speed Drives (ASDs) to demonstrate to owners, operators and consulting engineers how the differences between the 1992 guideline vs the 2014 version can affect their designs when specifying and installing low voltage ASDs.
It is according to IEC 60929, IEC 60969 and IEC61000-3-2. Up to 1MHz lrms can test every EB and has expanding analysis function for envelope wave. With big LCD can display the test results directly without PC
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Datasheet Metrel MI 3100 SE. Hubungi PT. Siwali Swantika 021-45850618PT. Siwali Swantika
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Calmet Ltd. produces sophisticated testing equipment for Energy Meter and Power Quality Analyzers testing. There are both: single and three phase sources and high accuracy reference energy meters. Portable working standards enables testing on site energy meters and current transformers.
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Để nhận báo giá sản phẩm Schneider vui lòng gọi: 0907.764.966
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Chi tiết các sản phẩm khác của Schneider tại https://dienhathe.com
Xem thêm các Catalog khác của Schneider tại https://dienhathe.info
Để nhận báo giá sản phẩm Schneider vui lòng gọi: 0907.764.966
Pemesanan produk, hubungi PT Siwali Swantika melalui WhatsApp, Jakarta : 0811-1519-949 (chat only) | Surabaya : 0811-1519-948 (chat only). Kunjungi website kami di www.siwali.com, untuk detail informasi spesifikasi dan model alat.
2. Agenda
What is Power Quality
Improving Power Quality
Power Quality in SATEC products
Accuracy Standards
3. What is Power Quality?
Definitions of the quality of the supplied voltage (what about the current?)
Usually referred in negative contexts – power quality problems
Measurement
– IEC 61000-4-7 Voltage Flicker
– IEC 61000-4-15 Harmonic Measurement
– IEC 61000-4-30 Measurement Accuracy (“Class A”, “Class S”)
– IEC 62052/3-11, 22, 23 Energy Accuracy (“Class 0.2S”, “Class 0.5S”)
Power Quality
– BS:EN 50160: In use worldwide, in favor of the utilities, voltage only,
statistical standard
– IEEE 519 and IEEE 1159: American standards, practical point of view
– GOST 13019: Russian standard, very comprehensive
– G5/4: British standard for Harmonics (also current)
– Customized: Allows the user to select the best of all, including fault
recording, waveform capture and more
8. IEEE1159-EN50160 Levels
IEEE 1159 EN50160
No. Categories Typical Spectral
Content
Typical Duration Typical Voltage
Magnitude
Short Duration Variations
Instantaneous
7 Sag 0.5-30 Cycles 0.1-0.9 pu <1 sec
8 Swell 0.5-30 Cycles 1.1-1.8 pu No
Momentary
9 Interruption 0.5 Cycles-3s <0.1 pu <1 sec
10 Sag 30 Cycles-3s 0.1-0.9 pu No
11 Swell 30 Cycles-3s 1.1-1.4 pu No
Temporary
12 Interruption 3 s-1 min <0.1 pu No
13 Sag 3 s-1 min 0.1-0.9 pu No
14 Swell 3 s-1 min 1.1-1.2 pu No
Long Duration Variations
15 Interruption, Sustained >1 min 0.0 pu Yes
16 Undervoltages >1 min 0.8-0.9 pu Yes 10 min
17 Overvoltages >1 min 1.1-1.2 pu Yes 10 min
9. THD-Total Harmonic Distortion
IN, VN – Individual Harmonics of order N
(%)
.....(
THD(I)
(%)
.....(
THD(V)
I
III
V
VVV
n
n
1
22
3
2
2
1
22
3
2
2
)100
)100
10. ITDD-
I max. demand-
–THD I
IEEETDD
TDD - Total Demand Distortion
(%)
)100
max
22
3
2
2
I
III
demand
n
.....(
TDD(I)
12. Agenda
What is Power Quality
Improving Power Quality
Power Quality in SATEC products
Accuracy Standards
13. Should we Care about Power Quality?
Comprehensive Research in Europe in 1400 sites at 8 countries reports that
20% experience the following:
Computer lockouts (20%)
Light flickering (22%)
Electronic card failures (18%)
Power Factor correction system failures (17%)
Failures in high load switching (16%)
Neutral conductor overheating (12%)
Unexpected breaker operation (11%)
Power meters inaccurate readings (6%)
And of course excess losses and downtime
14. Causes and Solutions
PQ Problem Major Sources Solutions
Frequency The Utility
Voltage variations Load changing
Sync. loads,
Fast PF correction
Voltage flicker
Load changing, mainly
welding
Fast PF correction
Voltage dip
Motor and other load
startups
Motor starters, VFD,
Fast PF correction
Interruptions The Utility
Overvoltage Over PF compensation Fast PF correction
Transients Connections, Switching Controlled switches
Unbalance
Unbalanced loads,
transformer phase shift
Balance the loads
Harmonics Non linear loads, resonance
Active/passive filtration,
detuned capacitors,
Improved VFD operation
15. Agenda
What is Power Quality
Improving Power Quality
Power Quality in SATEC products
Accuracy Standards
16. RS232/422/485, Profibus, TCP/IP,
Dialup modem, GPRS, RF, USB
Modbus RTU, ASCII, DNP3.0, Modbus/TCP,
DNP3/TCP, Profibus, IEC 61850, IEC 60870
ETC2002
COMMERCIAL & INDUSTRIAL
Multi-Tenant Submetering
Power Measurement
Energy Efficiency & Cost Allocation
Energy Management & Billing
Asset Management
C192PFBFM136 PM172 PM174/5 EM720 EM920 ezPAC
PAS
PM130 PLUS
LAN
ExpertPower™
Server (Pro Edition)
The Full Range of Electricity Management Solutions for Every Application
EM132/3
Substation
Automation
UTILITIES & RENEWABLEALL
Power Quality Analysis
Fault Recording
Revenue Metering
Smart Grid & Demand Response
PM135
Internet
ExpertPower™ Server
(Service Edition)
PM180
17. Built in analysis to international power quality standards
such as EN50160, IEEE1159, G5/4 and GOST
Automatic alerts for preventive maintenance
From simple compliance chart to sophisticated expert
analysis screens
25. Agenda
What is Power Quality
Improving Power Quality
Power Quality in SATEC products
Accuracy Standards
26. Full Scale (FS) vs. Reading
FS Full Scale, error in percents from the maximum
rating
Example:
Meter with 0.5% FS accuracy connected to 1000A
transformer, the error is 5A. In 500A load the accuracy
is 1% (5/500)
Reading = Error from the measured value
In the above example, the 0.5% error will be also in low
load, which means 2.5A only
27. Accuracy vs. Standard
Various measurement conditions
– Load
– Harmonics
– Power Factor
– Frequency
– and more…
Various ambient conditions
– Temperature
– EMC (the device and the accuracy)
– Humidity
– and more…
Tests by independent lab
Accuracy stability over time
(SATEC is approved for 8 years)
28. Power Factor and Cos
DPF = Displacement Power Factor (Cos φ)
TPF = True Power Factor (incl. harmonics)
Conclusion – practically there is no unity Power Factor.
2
1 iTHD
DPF
TPF
37. Comparison
Class 0.5 Class 0.5S
Class 0.5S
with HACSes
(or direct connection)
Power Meter Accuracy 0.8 0.6 0.6
CT Accuracy 0.75 0.5 Included
Phase Shift 1.14 0.76 Included
System Accuracy 1.58 1.09 0.6
38. Accuracy is for Engineers,
Money is for Decision Makers
1000 kVA transformer
80% load
0.90 Power Factor
0.15 US$/kWh
The difference between
0.6% to 1.58% equals to
US$ 9,272 each year
39. Accuracy Standard Pyramid
Class A
Class S
Class 0.2S
Class 0.5S
Class 0.5
Class 1
Class 2
%Readings
%FS (Full Scale)
No stated accuracy
---IEC-
Min. Acceptable
Not included:
Class B – meaningless
Class 0.1, 0.2 – only for CTs