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Entries in Qualitrol (4)


PQView 3.77.01 Released

PQView® 3.77.01 is available for download. This version includes more than 160 changes that result in improvements in nearly all components of the PQView application, including the installation program, charting engine, PQView Launcher, PQView Agent, PQView Explorer, the Power Quality Data Manager, and the Power Quality Data Analyzer. Here are some highlights for this release:

Faster Window Loading: When using PQView in its default language user interface, you will find each window loads significantly faster.

Data Handler for Schweitzer Engineering Laboratories Reports: We completely rebuilt the data handler in PQView’s PQ Data Manager for importing native text files produced by Schweitzer Engineering Laboratories (SEL) digital relays and monitors. The data handler can now import SEL event reports (EVE files), compressed event reports (CEV files), and load profile reports (LDP files). Additionally, the PQView installation program installs example SEL files and an example configuration file demonstrating how to import SEL text reports. This change was completed in concert with developments in the PQView 4 Data Manager Service, which can download these text files automatically from SEL equipment.

PQView Explorer: PQView Launcher now includes functionality for creating a PQView database in Microsoft Access format and for importing IEEE PQDIF files. This change means that PQView Explorer can be used now as a lightweight testing tool for determining compatibility of PQDIF files with PQView.

Parallel Data Source Importing: We made changes in the PQView PQ Data Manager to allow you to import more than one data source from the same PQView database from different instances of PQDM on the same computer at the same time.

Improved COMTRADE Data Handler: We completed changes in the IEEE COMTRADE data handlers that will result in significantly less memory being used during data source import from folders with large data files. Also, PQDM is able to handle more types of invalid COMTRADE files without stopping the import of valid COMTRADE files. Invalid data files can be moved automatically to a folder called “problem” so that they PQView will not try to import them again.

Data Handler for Environment Canada Hourly Weather: We added a new data handler for downloading and/or importing data from nearly one thousand weather stations provided by Environment Canada via the Internet. The data handler imports time zone, latitude, and longitude for each station, along with hourly readings for temperature, relative humidity, wind speed, peak hourly wind speed, and wind direction. Weather is available for Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Québec, Saskatchewan, and Yukon.

Optional ION Enterprise Data Handler: We added a new data source option that will merge waveform segments that occur close in time into a single waveform record in PQView. Previous versions of PQView would combine them into a single event record, but with multiple waveform segments. We added this feature to enhance fault location processing of ION waveforms that had a long pre-fault recording since PQView will process the first waveform segment only. Also, we completed changes to enhance compatibility with optional waveform formats found in StruxureWare databases.

Optional Qualitrol QIS Data Handler: The data handler now imports compliance reports such as those for EN 50160, including compliance statistics for rms voltage, line frequency, flicker perception, imbalance, voltage THD, and harmonics.

Optional Eaton/Cooper CYMDIST Data Handler: PQView now considers the open/close status of the following power systems devices from CYMDIST databases: breakers, reclosers, sectionalizers, fuses, and switches. PQView also computes the impedance of mid-feeder step-down transformers. Additionally, we made changes that will make it easy to use data from mid-feeder reclosers for automatic fault location.

Optional SCADA Correlation Modules: You can now correlate PQView measurement events with up to three SCADA databases. Previous versions of PQView could correlate events with just one data source.

Integration with EPRI Power Quality Investigator: You can now import magnitude-duration tolerance curves from the SQL Server database used by the EPRI Power Quality Investigator (PQI) application. These curves can be used within the RMS Voltage Variations Analysis Panel for creating magnitude-duration scatter charts or SARFI indices. The PQI application, along with hundreds of tolerance curves, is available from EPRI’s Power Quality Program 1.

PQView Library: We greatly improved the performance of the subroutines that return steady-state and harmonic samples for large data sets.


PQView 3.72.4 Released 

PQView® 3.72.4 is available for download.

This version includes 250 changes that result in improvements in nearly all components of the PQView application, including the charting engine, database schema, PQView Launcher, PQView Agent, PQView Explorer, the Power Quality Data Manager, and the Power Quality Data Analyzer.

Here are some highlights for this release:

Support for Microsoft® SQL Server® 2012: We made changes that allow PQView applications to open more quickly when used with databases hosted by SQL Server 2012.

Data Handler for BTECH® Battery Validation Manager: We added a new data handler for PQView that can import voltage, current, temperature, and impedance measurements from databases managed by BTECH’s Battery Validation Manager software application.

Other Data Handlers: We improved the data handlers for importing the following data store formats:

  • IEEE® Std 1159.3 PQDIF Single File
  • IEEE® Std 1159.3 PQDIF Basic Folder
  • IEEE® Std 1159.3 PQDIF Annex C Folder
  • IEEE® Std 37.111 COMTRADE Folders with No Mapping
  • Dranetz® DDB Files
  • Electro Industries/GE® Communicator Log databases
  • GridSense PowerView CSV Folder
  • Qualitrol®/LEM Instruments Q-Wave Information System (QIS) databases
  • SATEC PAS databases
  • Schneider Electric® ION Enterprise® databases
  • Unipower PQ Secure databases.

Optional Capacitor Switching Analysis Answer Module: We completed changes in PQView to support the first version of an optional add-in module that allows automatic capacitor switching analysis.

Follow-On Fault Analysis: We completed many changes to PQView for single-event and follow-on fault analysis.  The updated module allows correlation of faults with voltage sags, voltage swells, overcurrents, temperature, time of day, and more.

Chart Units: You can now control the normalization of units shown in charts that show temperature and impedance.  For example, this version allows temperature time series to be displayed in either Celsius or Fahrenheit, and impedance time series can be displayed in ohms, milliohms, or kilohms.

Phasor Charts: The phasors displayed in the PQ Event Roll will now be referenced to the first cycle of the voltage on Phase A no matter which phasors are selected for display.


PQView 3.71.3 Released

PQView® 3.71.3 is available for download.

This version includes more than 180 changes that resulted in improvements in nearly all components of the PQView application, including the installation program, database schema, SQL Server scripts, PQView Launcher, the Power Quality Data Manager, the Power Quality Data Analyzer, and PQView Agent.

Here are some highlights for this release:

Installation Program: This version of the installation program restores shortcuts to the Power Quality Data Manager and Power Quality Data Analyzer in the PQView 3.0 program group under the Microsoft Windows Start Menu.  These shortcuts had been removed in PQView 3.65.0 as part of changes to support Microsoft Access 2007 and Access 2010.

Digital Signatures: Beginning with this release, the executable files for PQView Agent, PQView Launcher, and PQView Agent each are digitally signed by Electrotek.

Default Site Properties: It is now possible to specify default values for site properties of new sites added to a PQView database during data source import.

PQView Database Library: Many new functions were added to the PQView Database Library (pqview.dll) and several existing functions were optimized for speed.  This library is used by many third-party applications designed to work with a PQView database.

PQView Agent: We completed many changes to make PQView Agent more reliable and easier to set up as an application for managing more than one PQView database on a single computer.  Also, changes were made in the PQView PQ Data Manager that increase its awareness that an instance of PQView Agent is running.  We need to remind you that PQDM and PQView Advisor can determine if each other is running only if your computer is Windows XP or later, which would be a reason for upgrading your computer from Windows 2000.  Note that Windows 2000 is no longer supported by Microsoft.

Data Handler for Dranetz DDB Files: We made more than ten changes to the data handler, which was the first time it was revised since 2003.  The changes focused on reducing memory needed during import, making the data handler more responsive to user cancellations, and handling incomplete or invalid data blocks better.

Other Data Handlers: We modified the modules used to import from the following data sources: CYMDIST Network and Equipment Databases, Dranetz ESS/InfoNode, ION Enterprise Databases, Electro Industries Communicator Logs, Qualitrol Q-Wave Information System (QIS) Databases, and Unipower PQ Secure Databases.

New Data Handlers: We added new data handlers for importing from General Electric Communicator Logs and from the AMR Database used at Provincial Electric Authority (PEA) in Thailand.  We also added a window for importing waveforms from Microsoft Wave Sound Format (WAV) Files.

EDMI Data Files: We updated the module that allows import from EDMI text files.  It now allows import of measurements from new meters without first adding a serial number for the PQView database as a site property.  As part of the change, you can specify a default value for nominal frequency and nominal voltage for new sites.

Chart Copy to Clipboard: You can now specify the format copied to the Windows Clipboard or to Microsoft Word from interactive charts.  You can choose between five formats: metafiles, enhanced metafiles, enhanced plus metafiles, bitmap files, and JPEG files.  The default is enhanced plus metafiles (EMF+).  These advanced types of metafiles better support display of languages other than English.  EMF+ plus files also can include Greek characters common in power systems analysis such as Δ, Ω, and σ.

PQ Event Roll: Several new charts were added to the PQ Event Roll: Second Derivative, Third Derivative, Rapid Voltage Change Analysis, Mean Values (PPC) and RMS Values (PPC).  You can now export measurements directly from the PQ Event Roll to the Event Roll, which allows you to view digital channels loaded with the event as thin and thick lines.  Additionally, you can now add, edit, or delete a text description of each event using the key combination <Ctrl><N>.  The event description text will appear at the bottom of each event chart if the “Show Event Desc” check box is marked in the PQDA Options window.

Steady-State Trends Window: We added two new derived charts.  One shows the minimum value of the subsets displayed in the chart, and a second displays the maximum value.  These complement the derived charts that were available in previous versions of PQView for showing the average and sum.

Rapid Voltage Changes: We updated the rules for compliance with Rapid Voltage Change limits to reflect current Norwegian NVE 1157 regulations.  Previous versions of PQView evaluated Maximum Voltage Change (ΔUmax) only.  This version of PQView evaluates an additional parameter: Steady State Voltage Change (ΔUss).  The Maximum Voltage Change is the difference between maximum and minimum rms values of a voltage change characteristic.  The Steady State Voltage Change is the difference between two adjacent steady state voltages separated by at least one voltage change characteristic.

Thai Support: We completed many changes in this version of PQView in order to better support computers configured with a Thai locale setting or Thai character set.

Requests from the Fall 2011 Users Group Meetings: We added many of the requests made by users at the 2011 North American and 2011 European PQView Users Group Meetings.


2010 Lillestrøm User Group Meeting Presentations

Presentations from the PQView User Group Meeting in Lillestrøm, Norway on 16-17 November 2010 are available to download.  Photos from the meeting were also posted.