Category Archives: Power Quality

Dr. InPhase Edu Series – How to use Krykard ALM-32/33/35 to carry out Power Quality Study

Hello Everybody. This is Dr. InPhase!!! In this dual part series I’ve already presented How to use Fluke 434-Series II for carry out Power Quality Study. In second part I’m going to walk through on How to use Krykard ALM-33/32/35 for carrying out Power Quality Study to record and analyze various Power Quality factors like Harmonics, Unbalance, Power Factor and so on.

KRYKARD ALM 32/33/35

  • To measure and record RMS voltage, current, power parameters in an electrical network.
  • To record the variations (power parameters) in the electrical network.

BASIC OPERATIONS

– Press to power up or power down the Krykard ALM-32/33/35 Analyser. The home screen shows RMS waveform for voltage and current.

DATE AND TIME

  • In home screen Press Configuration Button
  • Select Date/Time in Configuration screen
  • Press Enter button
  • Make the changes in DATE & TIME by using Navigation keys & Press ENTER.
  • Press Return button after the changes are made.

LANGUAGES & PHASE COLORS

  1. Measuring results belongs to different phases are presented with individual colors. Every region in the world having different sets of color code for the Phase sequences.
  2. Here we proceed with Indian region.
  3. The following steps are configuring the Phase Colors as well as Languages also.

FOR LANGUAGE

  • Press Configuration button
  • In Configuration screen, each Function keys belongs to different language.
  • In this screen the selected Function key belongs to English language.
  • Krykard ALM-32/33/35 offers 26 regional languages along with English.

FOR PHASE COLOR

  • Press Configuration button and Select Display
  • Press 2nd Function key for the Colors option
  • In this screen, we can change the voltage, current color coding of Phase & Neutral as per the region by using of Navigation keys.
  • If we select 1st Function key, there will be an option for Brightness adjusting. Brightness can be adjusted as per the requirement using Navigation keys.

  • If we select 3rd Function key, an option for automatic Display shutdown. Select Never/Automatic as per the requirement.

  • If we select 4th Function key, an option for Night mode. Activate/Deactivate as per our requirement.

WIRING SYSTEM CONFIGURATION

  1. Krykard ALM-32/33/35 has a several preprogrammed wiring setup of electrical system/equipment.
  2. Based on the system configuration like Three phase, Two Phase, Single Phase we can choose accordingly in the analyser also.
  3. The following steps are configuring the available wiring setup of Krykard ALM-32/33/35 for the electrical system which we want to analyse.

  • Press Configuration Button
  • Select Electrical Connection
  • Select the appropriate Configuration from the list of connections.
  • Available connections are- 3 Phase 3 Wire, 3 Phase 4 Wire, Single Phase 2 Wire, Split Phase 3 Wire.

ALM-33 CONNECTION CONFIGURATION

  • Connection example shown in the above picture.
  • Analyser we could use to connect in HT side (like 11kV, 33kV), LT side (like 415V, 690V) by taking CT and PT reference from the Breaker panel (ex. VCB).
  • We can analyse the load in feeder wise as well as connecting the particular load also (like VFD, DC Drive, etc.)

PT & CT PROBE SELECTION AND CONFIGURATIONS

  • This probe for connecting the PT reference side or PRIMARY side or Direct BUS BAR SIDE.

  • Press Configuration Button
  • Select Sensors and ratios and press Enter
  • Select the corresponding Function key for voltage (U)
    • 110V is common PT secondary voltage.
    • Select Ratio set-up and press Enter for Change PT ratio as per the Primary Voltage by using navigation keys.
    • Connecting in Live BUS BAR side PT ratio should be 3U 1/1
    • Example: Connecting in 33kV side VCB/Breaker side means PT ratio will be 0033.0k/0110.0
  • Press Enter after  the changes are made.
  • Press Return button after the changes.

  • This probe is for connecting in Measuring or Protection CT

  • The pictures show how to connect the probe in to the CT reference side.

  • Press Configuration Button
  • Select Sensors and ratios and press Enter
  • Select the corresponding Function key for current (A)
  • Select Ratio set-up 3A.
  • Press Enter after the changes are made (CT Ratio).
  • If we select Ratio set-up A1+A2+A3, for changing the CT ratio for individual phase.
  • For Neutral sensor, it is not available in ALM 33; By selecting 3 Phase 4 Wire configuration there will record Neutral Voltage & Current readings in virtual which we can by the display also.
  • Press Return button (Back to the previous screen)

 

  • This probe for connecting to the PRIMARY side or direct BUS BAR side.

  • Press Configuration Button
  • Select Sensors and ratios and press Enter
  • Select the corresponding Function key for current (A)
  • Select Ratio set-up 3A 1/1.
  • Set the ratio for 65A to 6500A. It can measure up to 1000A.
  • Press Return button (Back to the previous screen)

*After this above setup, the Analyser is ready for measurement.

MEASURING PROCEDURE

  1. After doing the initial setup now the Krykard ALM-32/33/35 is ready for taking the measurements.
  2. The following steps are for checking the connection and then proceed to start the measurement.

PHASE SEQUENCE

* The figures below explained for the correct connection setup.

This is the first thing should check for the connection verification.

  • After the connection is made, Press Waveform display Mode key the above screen will appear.
  • Use Navigation keys to see Voltage (3U) or Current (3A) waveform.
  • Select corresponding Function keys to see THD, CF (Crest Factor) and all.
  • Select this function key for Vector view of Current & Voltage (Explained detailed in below)
    • The below two screens are vector view of Voltage and Current.
    • In 3 Phase 3 Wire configuration, the directions should be clockwise and order should be Red-Yellow-Blue (RYB).

  • In 3 Phase 4 Wire configuration, the directions should be clockwise & order should be Red-Yellow-Blue (RYB)

  • Compare the Amperes and with Analyser and the connected Breaker panel side or Load side.
    • Check the amperes in the Multifunctional meter or Ammeter of the Breaker panel.
    • If the Ampere is not matching with the load side check the CT ratio fixed. If it is wrong change it accordingly.
  • if amperes match check the Directions of vector as per the above diagrams.
    • If the directions are not proper check the CT Probe direction in the breaker panel.
  • Both Amperes should match.

POWER & ENERGY

  • Press  Power parameter mode key, the above screen will appear.
    • Check the Actual Power (W), Apparent Power (VA),
    • Both values should be in Positive (+ve).
    • If the values are Negative (-ve) invert the CT probe direction fixed in the breaker panel.
    • Check for the Phase Sequence/CT probe direction in Breaker panel.

HARMONICS

  • Press Harmonics mode key, the above screen will appear.
  • We can see the harmonics in % and in terms of Amperes for voltage as well as current by using navigation keys in the screen.
  • Use corresponding Function key for seeing Voltage Harmonics (U) / Current Harmonics (A).
  • Till 50th order voltage and current harmonics recording available.

TREND MODE

  • Press button and select Trend mode the above screen will appear.
  • This is for selection of parameters we wanted to record.
  • Use corresponding Function keys to Select/Unselect the parameter.
  • After selecting all the parameters, Press Return button for the previous screen.
  • Then select Trend mode key for Start the recording.

TREND MODE is the function used to Start Measurements & Monitor the readings.

  • After selecting Trend mode key recording list screen will appear.
  • Select the Function key for Recording schedule, the above screen will appear.
  • Enter the Record Name, Star & Stop time by using Navigation Keys.
  • Period is the sampling time for data recording.
    • 20s (seconds) means the analyser will record every 20 seconds per data.
    • The data will be the Minimum, Maximum & Average of 20 seconds data.
    • In Krykard ALM-32/33/35 the Interval limit from 1s (Seconds) to 15 mins (Minutes).
  • After entering all the details Press this button to start.
  • After starting the recording the below screen will appear.

  • During recording time, we will be able to see THD, RMS, Current & Voltage Phase sequence, Crest Factor, Power Parameters by selecting Function keys & Mode keys.

  • After reaching STOP TIME / Finishing the measurement, it will SAVE automatically.
  • If we want to STOP in between the measurement Press in Trend mode screen, it will stop immediately and save the records. We can stop the measurement in between the record time.
  • In that Trend mode select the recording list will appear. In this we can see the recorded measurements and the waveform of the record by Enter the selected record.

Check out:  Fluke-435 Tutorial

Thanks for reading this article. Will see you again with a new article. Until then bye from Dr. InPhase!!! For any feedback contact us to info@inphase.in or call +919632421402.

 

Dr InPhase Edu Series – An Exercise in Reactive Power Calculation

Doctor_Character-04-1Good day every body, Today on our Edu Series we will focus on some practical knowledge related to Reactive Power calculation.  Calculating your reactive power is critical as it can help make sure that your design is reliable and you get a reliable power factor output.

Consider an electrical network with the details below,

Demand = 2500kVA; Initial PF1 = 0.76; Desired PF2=0.97.

The reactive power required to achieve the desired PF (0.97), is calculated as below:

We know that

Where φ is the angle between voltage and current vectors.

From the above,

Now here arises the doubt. We say, the above method of calculation is flawed. There is a fundamental electrical engineering mistake. Before you go on any further, we would like you to think and comment in the comments section below if you find the flaw. Because once you scroll down, you are likely to lose your unique perspective on the above. Therefore, please comment and proceed for the answer below. This can help knowledge sharing with numerous angles / perceptions. Thanks in advance for that.

———————————————————————————————————————————-

The mistake is in Point ②. We have considered the same kVA for ① where the pf is 0.76, and② where the pf is 0.97. When actually, it is Real Power or kW which remains constant. Load remains unchanged, which in other words translates into constant kW and NOT constant kVA.  The same is shown in the diagram below:

From the above diagram, we know now the ‘kvar’ required to improve the system from PF1 to PF2 (i.e, 0.76 to 0.97) is,

Applying Pythagoras theorem for the above diagram,

And,

Which implies, [kvar1 = kW × tan φ1] and [kvar2 = kW × tan φ2]. Substituting these in equation ④,

In terms of power factors,

This is a generic formula to calculate the reactive power demand when the present power factor and the desired power factor are known. The same formula reduces to the following for desired power factor being Unity.

Where φ is the power factor angle.

We sincerely hope that this exercise helps you in calculating reactive power demand with more clarity.

Do you have a Challenging Power Factor Correction or Compensation issue, no matter how dynamic your load or reactive power is we can find the right solution for you. Get in touch with us today.

This article was originally published in www.pqindia.in.

The author Mr. Hasan Mydin is part of the “Advanced Power Quality Solutions” department at InPhase. He is a self-confessed Power Quality enthusiast with more than a decade’s experience solving power quality problems across India and even abroad. To know more about him, check out  his LinkedIn Profile.

Meet you again with a interesting article, until then  bye from Dr.InPhase

Thank you!

Doctor_Character-71

Thanks for reading…if you have questions don’t forget to ask me. You could write to me to info@inphase.in or call +919632421402

Dr.InPhase Edu Series – Video Tutorial on using Fluke 435 For Power Quality Measurement

Dear All,

Fluke 435 InPhase TutorialFurther to the overwhelming response to our tutorial on using Fluke 434 for Power Quality measurements we have now launched a new video tutorial. What is so special is that I have roped in Mr.Hasan Mydin a top notch power quality expert in the world. It is a twenty minute tutorial that outlines that covers end to end on the usage of Fluke for Power Quality measurement.

Topics Covered

  1. How to setup Fluke Meter
  2. Different configurations in which measurements can be obtained.
  3. Measurement topology
  4. Handling different site conditions
  5. User interface of Fluke 435
  6. Detail explanation on Operations of the meter

If you have not read our step by step tutorial on Fluke 434 Series for Power Quality. Please check it here. How to Use Fluke 434 For Power Quality measurement

Please do share your feed back after watching this video.

Happy learning and catch you soon with more news about Power Quality and much more.

Thanks for reading…if you have questions don’t forget to ask me. You could write to me to info@inphase.in or call +919632421402

IInphaseLogo(300dpi) (1)nPhase Power is a Power Electronic Product company manufacturing products for Power Quality and Power Conversion. InPhase is manufacturer of Active Filter, Active Harmonic Filter, Solar Inverter. InPhase majors in power system design for power quality and conversion. Driven by a management that has a combined experience of over 60 years in power system and power electronics InPhase nurtures innovation and passion in this field.

IEEMA announces Workshop on “REACTIVE POWER MANAGEMENT AND POWER QUALITY”

IEEMA the industrial association for Electrical Industries is very proactive in educating and creating awareness in the market. Today IEEMA has announced a very insightful workshop on  Power Quality and Reactive Power Compensation. Take a look at the agenda and get in touch today to be part of this excellent program. We will meet you there.

Objective

Reactive Power Management has become very important now-a-days because of introduction of power factor based tariff. Power Factor (PF) is crucial in all Electrical Power utilizing environments. A good understanding of Power Factor is essential for practicing Electrical Engineers and middle level managers as a good control of PF could lead to many advantages – energy saving, reduction of current loading, higher output from motor and generators, longer life for cables and equipment  – to mention a few. However, the equipment that is used to improve power factor interacts with network harmonics and brings down overall reliability. This workshop addresses such issues and gives solution to mitigate these problems.

LOCATION

DATE & TIME

VENUE

Bangalore

14th October 2016, Friday

10:00 am to 5:00 pm

The Fern Citadel Hotel
No. 41, Seshadri Road,
Ananda Rao Circle, Bangalore – 560 009
Tel : +91 080 4240 2222

Key Benefits

  • Gives basic knowledge of fundamentals of Reactive Power Management
  • Can be applied directly to any installation and hence a boon for Engineers and others
  • Gives knowledge about Power Quality in general and Harmonic pollution in particular along with practical solution to mitigate them

Contents

  • Benefits of Power Factor Improvement
  • Evaluating PF from Electricity Bill
  • Methods of improving Power Factor
  • Automatic Power Factor Correction (APFC)
  • Issues in Power Quality
  • Power Factor Improvement of DG Sets
  • Harmonics – Causes, Measurement and Mitigation
  • Harmonics and effect of adding Capacitors in the System
  • Harmonic Filters and Active Compensation

Target Audience

Transmission and Distribution Operating Personnel, Engineers involved in Planning, Designing and Testing of Power Control Equipment and Engineers in charge of Electrical Maintenance, Engineers from Public / Private Sector Power Utilities.

However, anyone with enthusiasm and interest for Power Systems are most welcome to attend.

Faculty

Mr  K SUBRAMANIAN

k-subramanianA  Masters Degree in Electrical Engineering and having an overall experience exceeding over 30 years in various fields such as Design, R&D, Production, Erection & Commissioning. Presently working as a freelancer in Bangalore. His current activities include promoting Electrical Power Quality awareness in the fields of Harmonics and Reactive Power Management. A regular faculty in PSTI (Min of Power), Bangalore, Larsen & Toubro Switchgear Training Centres, and conducted program on DRUM (Distribution Reforms, Upgradation and Modernization) organized by (Min of Power) Govt. of India and aided by Govt. of USA. Visiting faculty in various Engineering Colleges.

WorkShop Fees:
Members : 3000
Non Members: 3500

For Registration Contact:  k.seetharaman@ieema.org
Mobile : +91 99800 04982 (Seetharaman K)

Visit www.ieema.org for more details!

Doctor_Character-71

Team InPhase will be hoping to meet you there! Cheers!

Dr.InPhase Edu Series – How to use FLUKE 434-SERIES II for Power Quality Analysis

Dr InPhase Edu Series PQ

Hello Everybody, Hi from Dr.InPhase. In our today’s educational series we are going to learn something very important and rudimentary for Power Quality. That is learning how to measure power quality using one of the popular Power Quality analysis equipment in the market the Fluke 434-II Series. If you have feedback don’t forget to write to info@inphase.in or drinphase@inphase.in

Power Quality is gaining a lot of prominence and priority in the market. The first step towards a better Power Quality is to conduct an analysis. Carrying out complete Power Quality requires a very good Power Analyzer.

At InPhase Power we carry out a lot of Power Quality Analysis study at various industries like Steel/Cement/Automobile/Paper/Process… etc. We use Fluke 434-II and Krykard ALM 33 Power Analyzers for this purpose.

In this multi-part series blog I am going to walk you through on how to carry out Power Quality Study to analyze and record various Power Quality factors like Harmonics, Unbalance, Power Factor, Flickers, etc…

The first part we will focus on Fluke 434-II which is a popular Power Quality analyzer and the posts to come later will focus on using Krykard ALM 33 and the process to analyse this data .

FLUKE 434-II

Fluke 434-II

  • Used for energy logging.
  • Measure the before and after installation improvement in Power Quality or Energy Consumption to justify the devices like Active Harmonic Filters, APFC, etc.
  • Detect and prevent Power Quality issues before they cause any issues.
  • Verify electrical system capacity before adding loads, and to Amylase the load pattern.

BASIC OPERATIONS

Basic operations-1

1– Press to power up or down the Fluke Analyzer. The home screen shows what                   Analyzer settings are currently in use.

DISPLAY INFORMATION

Display info

  • This is home screen when the analyzer gets TURN ON.
  • In this screen we can see basic configurations like Phase colors, Connection configuration, Choosing of CT probe and ratios.

MENU NAVIGATION

Menu navi

DATE & TIME

  • In home screen Press Setup Button
  • Press F4(MANUAL SETUP)
  • Select TIME in Home screen
  • Press ENTER
  • Made the changes in TIME & Press ENTER
  • Press F3 it will switch to DATE Adjustments
  • Made the changes in DATE & Press ENTER
  • Press F5 (Back to Home Screen)

LANGUAGES & PHASE COLORS

  1. Measuring results belongs to different phases are presented with individual colors. Every region in the world having different sets of color code for the Phase sequences.
  2. Here we proceed with UK region which is used in India also.
  3. The following steps are configuring the Phase Colors as well as Languages also.

Lang&Phase colours

  • Press Setup Button
  • Select F1 (USER PREF.)
  • Select Language –> Press ENTER
    • In that menu Select the Language desired & Press F5
  • Select Phase Colors –> Press ENTER.
    • In that menu select the region or customize the Colors & Press ENTER.
  • Press F5 (Back to Home screen)

WIRING SYSTEM CONFIGURATION

  1. FLUKE 434-II has a several pre-programmed wiring setups of electrical system/equipment.
  2. Based on the system configuration like Three Phase, Two Phase, Single Phase we can choose accordingly in the analyzer also.

The following steps are configuring the available wiring setup of FLUKE 434-II for the electrical system which we want to analyze.

Wiring sys config

  • Press Setup Button
  • Select F4 (MANUAL SETUP)
  • Select Config: –> Press ENTER
    • In that menu Select the Appropriate Configuration

Wiring sys config-2

  • Select Freq:–> Press ENTER.
    • In that menu select the Nominal Frequency.
    • 50 Hz is used in Europe, most of Africa, most of Asia, most of South America and Australia.
  • Select Vnom:–> Press ENTER.
    • In that menu select the Nominal Frequency.
    • 230V is used in Europe, most of Africa, most of Asia, most of South America and Australia.
  • Press F5 (Back to Home screen)

*In North America, the most common combination is 120 V and a frequency of 60 Hz

 

FLUKE 434-II CONNECTION CONFIGURATION

Fluke 434 connec config

NOTE: For connecting in 3-Phase 3-Wire system, Neutral probe connection can be neglected for CT as well as PT.

Fluke 434 connec config-2Fluke 434 connec config-3

  • Connection example shown in the above picture.
  • Analyser we could use to connect in HT side (like 11kV, 33kV), LT side (like 415V, 690V) by taking CT and PT reference from the Breaker panel (ex. VCB).
  • We can analyse the load in feeder wise as well as connecting the particular load also (like VFD, DC Drive, etc.)

CT & PT PROBES SELECTION AND COFIGURATIONSPT Probe

  • This probe for connecting the PT reference side or PRIMARY side or Direct BUS BAR SIDE.

PT

  • Press Setup Button
  • Press F4(MANUAL SETUP)
  • Select PHASE & NEUTRAL SETTINGS
  • Press ENTER
  • Press F4 –>
    • Change PT ratio as per the Primary Voltage.
    • 110V is common PT secondary voltage.
    • Connecting in Live BUS BAR side PT ratio should be 1:1
    • Example: Connecting in 11kV side VCB means PT ratio will be 11000:110 or 100:1
  • Press Enter after made the changes.
  • Press F4 do the changes in Neutral probe connection (OPTIONAL).
  • Press F5(Back to the Home Screen)

CT flex

  • This probe for connecting to the PRIMARY side or direct BUS BAR side.
  • For this CT ratio should be 1:1.

CT i430

  • Press Setup Button
  • Press F4(MANUAL SETUP)
  • Select PHASE & NEUTRAL SETTINGS
  • Press ENTER
  • Select AMP CLAMP –>
    • Change as per the Clamp connected (i430Flex, i5s, others)
  • Press Enter after made the changes (CT Ratio).
  • Press F4 do the changes in Neutral probe connection (OPTIONAL).
  • Press F5(Back to the Home Screen)

CT i5s

  • This probe is for connecting in Measuring or Protection CT side.

CT i5s last

  • The picture shows how to connect the probe in to the CT reference side.CT Clamp
    • Press Setup Button
    • Press F4(MANUAL SETUP)
    • Select PHASE & NEUTRAL SETTINGS
    • Press ENTER
    • Select AMP CLAMP –>
      • Change as per the Clamp connected (i430Flex, i5s, others)
    • Press Enter after made the changes (CT Ratio).
    • Press F4 do the changes in Neutral probe connection (OPTIONAL).
    • Press F5(Back to the Home Screen)

     

    *After this above setup the Analyser is ready for measurement.

     

    MEASURING PROCEDURE

    1. After doing the initial setup now the Fluke Analyzer is ready for taking the measurements.
    2. The following steps are for checking the connection and then proceed to start the measurement.

    PHASE SEQUENCE

    * The figures below explained for the correct connection setup.

    This is the first thing have to check for the connection verification.

Scope screen buttonScope Screen

  • After made the connection, Select Scope–>The above screen will appear
  • Press F1–>Switch to see Voltage or Current waveform
  • F2–>Cursor will appear for see the particular instant values (Use navigation keys to move the cursor)
  • F4–>Zoom in or Zoom out the waveform (Use navigation keys to Zoom in or Zoom out)
  • F5–>Back to the Home Screen
  • F3–>Vector view of Current & Voltage (Explained detailed in below)
    • These two screens are vector view of Voltage and Current
    • Press F1–>for switching the screen from Voltage to Current or Current to Voltage.
    • The directions should be clockwise & order should be Red-Yellow-Blue (RYB)

Scope-3

  • Compare the Amperes and with Analyzer and the connected Breaker panel side or Load side.
    • Check the amperes in the Multi-functional meter or Ammeter of the Breaker panel.
    • If the Ampere not matching with the load side check the CT ratio fixed. If it is wrong change it accordingly.
  • Amperes are matched check the Directions of vector as per the above diagrams.
    • If the directions are not proper check the CT Probe direction in the breaker panel.
  • Both Amperes should match.
  • After this check go to–>MENU

POWER & ENERGY

scope-4

  • Select–>POWER & ENERGY
    • Check the Actual Power(W), Apparent Power (VA)
    • Both values should be in Positive(+ve)
    • If the values are Negative (-ve) invert the CT probe direction fixed in the breaker panel.
    • Check for the fixing of CT probe direction in Breaker panel.
  • Press–>F5 (HOLD OR RUN)
  • Select–>F1 (DISCARD & EXIT)–>MENU Screen will appear.

HARMONICS

har

  • Select–>HARMONICS
    • We can see the harmonics % in voltage as well as current by scrolling down in the screen.
    • Till 50th order voltage and current harmonics recording available.

indiv harm

  • Press–>F2 (HARMONIC GRAPH VIEW)
    • We can see individual order of harmonics % and Amperes in each Phase.
    • Press–>F1 (Switch to see Voltage, Current, Watt Harmonics)
    • Press–>F2 (Viewing of individual phase Harmonics)
    • Press–>F3 (Back to Recording screen)
  • Press–>F5 (HOLD OR RUN)
  • Select–>F1 (DISCARD & EXIT)–>MENU Screen will appear.

 

LOGGER

Logger button

LOGGER is the function used to Start Measurements & Monitor the readings.

Screen-10

  • After selected the LOGGER button the above screen will appear
  • INTERVAL is the sampling time for data saving.
    • 10s (seconds) means the analyzer will record every 10 seconds per data.
    • The data will be the Maximum & Average of 10 seconds data.
    • In Fluke Analyzer the Interval limit from 0.25s (Seconds) to 2h (Hours)
  • Press–>F2 (CHANGE NAME for changing the measurement name as per wish)
  • Press–>F1 (SETUP READINGS)

Screen-11

  • This screen will appear
    • This is for selection of parameters we wants to record.
    • Each CATEGORY having set of parameters displayed in READINGS column.
    • Press–>F3 for Selecting the parameters we want.
    • Like this we have to do for each CATEGORY.
  • Screens displayed below explain about the parameter selection.

Screen-11 Screen-12 Screen-13 Screen-14 Screen-15 Screen-16 Screen-17

  • The parameters chosen here all are standard Power Parameters with 25th order Voltage & Current harmonics recording are used to analyze the load pattern of an Industry power, Understanding of Power Quality problems like Harmonic & Reactive power compensation.
  • Press–>F5–>After selecting all the parameters wants to measure–>LOGGER Screen will appear.

Screen-10

  • Duration of recording from minimum 1hr to maximum of 7days in Immediate
  • We can able to start measurement by scheduling in timed
  • After setup the measurement duration PressàF5 (START the measurement)
  • The below screen will appear.

logger measurement

By scrolling down this screen we can see the parameters we have selected before starting the measurement.

  • After finishing the measurements it will ask for SAVE.
  • If we want to STOP in between the measurement PressàF5(HOLD or RUN)
  • Press–>F1(DISCARD & EXIT)
    • To stop the measurement at any time.
  • Press–>F2(DISCARD & RESTART)
    • To restart the measurement.
  • Press F4–>(SAVE)
    • Save the recorded data–>SAVE Screen will appear.
    • In that screen, we can change the recorded data name as we want.
    • Press F5–>OK to save the data.

FEATURES

Features

SAVE SCREEN/SCREENSHOT

  • This is function for save the Running display as an image during Measuring time
    • We can save the SCOPE screen, LOGGER screen for the reference.
  • Press SAVE SCREEN–>Save Screen Menu will appear
  • Fix the name as we want or the default will be SCREEN XX (Number).
  • Press ENTER–>Save the screen
  • Press F5–>BACK to previous screen

MEMORY

After finishing the measurement we can see the recorded files and delete the unwanted recordings from MEMORY function.

  • Press MEMORY Button
  • Press F1–> RECALL or DELETE
    • In that menu the recorded files will appear.
    • Select the desired data by using the navigation keys.
    • Press F2–>VIEW the selected data.
    • Press F3–>DELETE the selected data.
    • Press F4–>RENAME the selected data.
    • Press F5–>RECALL the selected data.
      • This option will replay the entire measurement.
    • Press F1–>Back to the previous screen.

Thanks for reading this article. I hope this was helpful to you. In the upcoming parts I will detail about how to measure using Krykard ALM 33 Power Quality Analyzer and also discuss in detail how the data extracted from these equipment’s can be used to analyze power quality.

If you are interested to conduct a Power Quality Study InPhase Power is ready to support you. Contact us @ info@inphase.in or +919632421402

ACTIVE HARMONIC FILTER – TECHNOLOGY REVIEW

Dr.InPhase Reading
Dear Readers, InPhase recently participated in India’s premiere event for Power Quality “CAPCIT2014“.(You can read more about it here). This blog is to share the abstract of the paper that we presented at CAPACIT2014. If you are interested in receiving the full version of this paper please email to info[@]inphase.in

 

 

 

ACTIVE HARMONIC FILTER – TECHNOLOGY REVIEW

Authors:

Natesh Mayavel, InPhase
Panna Lal Biswas, InPhase
Thiyaneswar MS, Inphase

ABSTRACT

Consumer electronics, Data Centers, HVAC systems and a large range of industrial applications, namely power electronics based, can cause high disturbances into the supplied electricity. The disturbances comprise of harmonic current generated by such loads, and the voltage distortion created by the harmonic currents. The main problem with the harmonic currents is that, they can cause overheating in the local supply distribution transformer and in the installation itself. Indian Electric utility companies are starting to be more concerned about harmonics in the transmission and distribution network, and imposing strict harmonic limits on consumers. Active harmonic filter is a potential solution to mitigate harmonics problems. The usage of active harmonic filter is expected to increase drastically in Indian industries, to meet utility requirements. This paper discusses technology variants of Active Harmonic Filter from different aspects, and their advantages and disadvantages.

KEYWORDS
Active harmonic filter; STATCOM; Active filter technology; Power quality; Harmonic currents; Voltage distortion; Electrical installations;

InPhase Active Harmonic Filter Technology Review

InPhase Active Harmonic Filter Technology Review

CONTENTS
1. Introduction
2. Active Harmonic Filter Principle
3. Active Harmonic Filter in Electric Network
4. Technology Review
4.1 Control System Schemes
4.2 Control Mode
4.3 Speed of Response
4.4 Unbalance in Harmonics
4.5 Power Hardware
4.6 Input passive network
4.7 STATCOM Vs Active Harmonic Filter
4.8 Networking
5.0 Conclusion

If you are a Power Quality or Active Harmonic Filter enthusiast please contact us today at info[@]inphase.in to receive the full copy of this paper.

Meet you again with a interesting read. until then bye bye!! from Dr.InPhase Power. Your Power Quality Partner.

Doctor welcome

At InPhase Power we are very serious about improving the power quality of the nation. Our products provide unmatched improvement in Power Quality by effectively curbing harmonics and maintaining steady power factor. Explore our Products Active Harmonic Filter(IPC150-AHF) and STATCOM (IPC150-SCOM) to find how they can improve your power quality.

How TNEB regulatory commission Tangedco determines Power Quality and harmonics

Doctor_Character-04-CompTANGEDCO the Tamilnadu regulatory commission for Electricity is the forerunner in power quality for Industries by setting a Harmonic limit and consequently a penalty for the same when exceeded. This initiative is the first in the country and many other states are sure to follow it.  Refer here on the tariff rates for Harmonics by TANGEDCO 

FLUKE the measurement meter companyof choice by TNEB for measuring Power Quality and harmonics has recently published about this in its international blog and covering how the TNEB audit is carried out. It is also worth to note that TNEB has purchased over 42 meters (Fluke 435 Series II Power Quality and Energy analyzer)  from Fluke to carry out this energy audit.

How TNEB measures / determines Power Quality and Harmonics at your site ?

Instrument to use: Instrument complying with Class A per IEC 61000-4-30

Measuring Point: At point of common coupling (PCC)

Measurement Cycle: Two operating cycles with large non-linear loads into operations; if continuous process then eight hours

Measurement Value: Ten minutes average values of THD for voltage; TDD for current and individual harmonics for voltage

Loading condition: 75 percent or higher than the last 12-month average load

Harmonic Limits: 98 percentile value needs to be less than 5 percent for voltage THD, 3 percent for individual harmonics, and 8 percent for current TDD

Fluke 435

InPhase_Doctor_Character-XrayAt InPhase we use Fluke 435 Series II Power Quality and Energy analyzer to carry out energy audits and have the tools to give you the Power Quality report in the shortest time.  It doesn’t end there but it just starts, with a whole range of Power Quality solutions in our product range like Active Harmonic Filter, STATCOM, APFC Panels, Detuned Filters, Line reactors we will give you the best and cost effective solution of choice to meet your power quality needs.

Contact our team today by dropping a mail at info[@]inphase.in or call us at +919632421402

 

Article originally appeared in: Fluke US Blog