What's New with PQView?

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PQView 3.76.0 Released 

PQView® 3.76.0 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:

Easier Support of PQDIF Import in Windows 7: Many users have begun to use PQView on a Windows 7 computer, or the related Windows Vista, Windows 8, Windows 2008, or Windows 2012.   We made changes in the PQView installation program that will enable more complete import of IEEE PQDIF files when using these later editions of Microsoft Windows without needing administrator permission on your computer during normal usage. 

Parallel Data Source Importing: PQDM has some improvements that make the clean-up of temporary files less problematic when using PQView Agent to import more than one PQView data source at the same time.

Support for SQL Server 2012: You will find a T-SQL script that will ship with PQView 3.76.0 that can be used to convert an existing PQView database for full use in SQL Server 2012. 

COMTRADE File Data Handler: You can now specify more than one COMTRADE analog channel to be the source for a PQView waveform channel.  For example, if you are using PQView with a digital fault recorder that has more than one line current that needs to be summed to comprise the current for Phase A, then you can do so by simply adding the second channel in the COMTRADE-to-PQView channel map configuration file.  We converted some pop-up error messages to data source log messages.  We now allow you to override the line frequency in the configuration file, and allow you to import kW, kvar, and kVA if the COMTRADE file includes these power channels. 

ION Enterprise Data Handler: We added support the optional ION Enterprise Data Handler for PQView to allow import from Schneider Electric StruxureWare databases.

Reactance-to-Fault Add-in Module: In this optional add-in module used for automatic fault location, we added new e-mail notifications for negative-sequence overcurrent with no SCADA correlation, zero-sequence overcurrent events with no SCADA correlation, and events with missing current.

InfoNode Summary Window: We added a new window that can be used to show the status of all DataNodes associated with one or more InfoNode data sources in the PQView database.  The window lets you see the name, description, last connection time, status, health, serial number, model, version, IP address, and nominal voltage  for each DataNode.  Additionally, you can activate or deactivate multiple DataNodes at one time from within PQDM.  You can also use PQDM to request the InfoNode to poll one or more DataNodes on demand, and to view the InfoNode log.

New Chart Options: You can now specify the default chart size (small, medium, or large) and default zoom mode (horizontal, vertical, or horizontal & vertical) for interactive charts.

PQ Event Roll: We added a new derived chart that allows you to overlap voltage waveforms for a multi-cycle recording into a one-cycle window.  Also, you can now make frequency calculations for shorter measurements because we ignore just the first cycle and last cycle of the measurement before looking for zero crossings.  Previous versions of PQView ignored the first three and last three cycles.

Steady-State Trends Window: You can now add text annotations to the trend charts from the event descriptions or system event details. Also, you can use the window to display specific dates only, allowing easy comparison of the data logs for one day to another day.

Steady-State Load Forecast Tool: The load forecast tool, which can use temperature and/or humidity data along with historical load measurements to predict future load growth, was updated to be more flexible with correlation between load and weather data. A temperature sample needs only to be within fifteen minutes of a load sample in order to be compared.

PI Explorer: You can now query trend values from a PI Server without importing them into a PQView database.

Rapid Voltage Change Event Analysis Window: We made many changes to the tool that allows you to create RVC Event Lists and to make an RVC Summary Report to the specification of the Norwegian Water Resources and Energy Directorate.


PQView 3.73.0 Released  

PQView® 3.73.0 is available for download.

This release includes nearly 150 changes to PQView.  The changes result in improvements in all major components of the PQView application. 

Icons for PQView PQ Data Manager and PQView PQ Data Analyzer: The graphics for the program icons and splash screens for PQDM and PQDA were updated.  They now use the same theme used for PQView Agent.

Support for Microsoft® SQL Server® 2012: We made more changes to allow PQView applications to open more quickly when used with databases hosted by SQL Server 2012.  Also, the PQView23.sql script shipped with PQView was modified slightly to be more compatible with RTM edition of SQL Server 2012.

PQView Database Library: We made more than nine changes to the PQView Database Library that is used by an increasing number of third-party software engineers to query measurements from a PQView database.  Some of the changes include the important bug fixes in the subroutines that return statistics.  We also added properties that allow you to filter steady-state samples and harmonic samples based on valid minimum and maximum values.  New methods were also added for determining compliance for rms voltage, line frequency, negative-sequence unbalance, voltage THD, voltage fluctuations, and individual harmonics.

PQView Agent: You can now use PQView Agent to send overdue data source e-mail notifications.  That is, a PQView Agent instance running on one computer can send an e-mail notification if the data source owned by another computer is overdue for import.

Data Handlers for IEEE PQDIF Files: We made many improvements in the IEEE Std. 1159.3 PQDIF data handlers, focusing on improving our support of more types of data that can stored in a PQDIF file, and on better handling of errors encountered in PQDM during import of PQDIF files that do not completely follow the IEEE 1159.3 standard.

Data Handlers for IEEE COMTRADE Files: We improved the data source importing code for IEEE COMTRADE files, making it easier for PQDM to log problems with COMTRADE files noncompliant with IEEE Std C37.111-1991/1999. 

Data Handler for Dranetz InfoNode Servers: You can now specify the maximum number of PQDIF record chunks to download from an InfoNode server during an import session.  The default used to be 1000, but was upgraded to 5000 in PQView 3.70.0  Starting with this release, you can specify larger numbers of PQDIF chunks to download as an option. 

Data Handler for SoftSwitching Technologies I-Grid Web Site: We added options in the Data Source Setup that allow you to deselect import of Transient Events and Power Up Events. These options are not enabled for an existing data source, so be sure to mark them in your existing PQView database if you want to continue to import these characteristics.

Data Handler for ISO System Loads:  We added a new data handler to download and import data from the following Independent System Operators in North America: Electric Reliability Council of Texas (ERCOT), ISO New England (ISO-NE), New York ISO (NYISO), Ontario Independent Electricity System Operator (IESO), and the Pennsylvania-New Jersey-Maryland Interconnection (PJM).

Photo Courtesy of NASAData Handler for NOAA Daily Geomagnetic Data: We added a new data handler for downloading and importing NOAA’s daily geomagnetic data file for A indices and K indices for the current quarter.  These "space weather" indices assess the current level of geomagnetic activity caused by solar storms.

Silver Spring Networks Integration: You can now import voltage, current, and energy data from Silver Spring Networks export files. Silver Spring Networks provides services for collecting and managing data from smart energy meters. 

Other Data Handlers: We improved other data handlers in this new PQView version as well, including the modules used to import from the following sources: BTECH Battery Validation Manager, Electro Industries Communicator Log, and Schweitzer Engineering Laboratories® (SEL) EVE Folders.

Compliance Reporting: The functionality associated with the Compliance Setup Window in PQDM, which began in 2007, is finally completed.  The window allows you to create a configuration file usable by PQDM to create XML and HTML compliance reports.  The compliance setup includes the ability to specify two compliance intervals, which would allow computation of special compliance indices like “precarious voltage” required by ANEEL in Brazil.  Also, the PQView PQ Data Manager can now produce a compliance summary report for rms voltage, negative-sequence unbalance, voltage fluctuations (Pst and Plt), voltage THD, and individual voltage harmonics.

Steady State Trends Window: You can now specify the list of specific harmonics to display using commas, semicolons, and hyphens.  For example, if you set the harmonic text box to the string “1,2,3,10-12;21-25”, then the following harmonics would be trended: 1,2,3,10,11,12,21,22,23, and 24.  You can also specify another code to display inclusive lists of just the odd harmonics or just the even harmonics.  Also, you  can now display numeric site property values from a drop-down list box on the trend, histogram, and profile chart as horizontal or vertical line annotations.


User Group Meeting Presentations from 2000

Presentations from the 2000 PQView Users Group Meeting are now available online.  This was the fifth annual PQView Users Group Meeting and it was held in Knoxville, Tennessee, USA.

The archive includes presentations from both the user group meeting and the user training workshops.  The meeting focused on PQView 2.2.2, PQWeb 2.2, Microsoft SQL Server 7, IEEE PQDIF, PQView 2.3, Using TOP with PQWeb, PQWeb Administration, and E-mail Notification using the SagMail Module.  The SagMail module is now called the PQNotify within PQView.


User Group Meeting Presentations from 1999

Presentations from the 1999 PQView Users Group Meeting are now available online.  This was the fourth annual PQView Users Group Meeting and it was held in Knoxville, Tennessee, USA. 

The archive includes presentations by Electrotek Concepts and San Diego Gas & Electric.  The meeting focused on PQView 2.1, Microsoft SQL Server, PQWeb 2.1, the PQView PQICM Module, and integration of PQView with the EPRI Power Quality Diagnostic System.