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Tuesday
Jun212011

PQView 3.70.0 Released 

PQView 3.70.0 is available for download.  Here are some highlights for this release:

Translated User Interface: To complement the Simplified Chinese user interface that has been available since 2008, we added a new Traditional Chinese user interface.

PQView Database Library: The software library used by third-party software engineers to provide data to custom PQView applications was significantly updated.  The new version of the library can return data log samples up to 35% faster, and waveform samples can be returned up to 80% faster.  Examples of third-party applications developed by PQView users in Asia and Europe are posted in the PQView Users Group Meetings Archive.

Point-in-Wave CharacteristicsIEEE P1159.2 Module: We added a new module for analyzing voltage sags using the methods described in drafts of IEEE P1159.2 and in EPRI Report TR-113044.  The rms characteristics defined by IEEE P1159.2 include sag start, sag stop, sag duration, rms minimum, rms average, rms maximum, and three-phase rms imbalance.  The point-in-wave characteristics defined by the draft standard include point of initiation, point of recovery, duration, initial transition angle, phase jump, final phase shift, final transition angle, post event angle, and maximum harmonic rms value.

Data Handler for Dranetz ESS/InfoNode: We completed optimizations in the data handler used to download measurements from Dranetz InfoNode servers that will reduce download time from remote InfoNodes by about 50%. Another improvement will reduce CPU utilization during stored data download by as much as 95%.

Data Handler for IEEE PQDIF Files: We increased the limit on the number of samples that could be imported from a single series in an IEEE 1159.3 PQDIF file to one million.   We also updated the PQDIF-to-PQView translation table within the PQDIF Data Handler for PQView to allow import of sliding window long-term flicker perception and real power at the fundamental frequency.

Updates to Other Data Handlers: We updated the data handler used when importing measurements from the SoftSwitching Technologies I-Grid web site, from IEEE COMTRADE files, and from EDMI EziView text files.

Linear Regression Scatter ChartLinear Regression Charts: You can now create scatter charts for data logs that feature linear regression lines and statistics.

X-Axis Annotations: We are no longer using vertical lines to indicate when status values change for digital channels imported from a microprocessor relay.  We now use x-axis annotations, which allow many more digital status changes to be shown very close in time.
 

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