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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.