Power Quality Monitoring

▼Chapter 2Power analyserPower visualisation softwareThe data gained from various measurement points must be collected, saved, visualised and made available. The GridVis software containedin the UMG 604 package allows Parameterisation and programming of UMG measurement equipment Visualisation of the measurement values with topological view Automatic download of the measurement data Data storage Online analysis tools Analysis tools for historic dataVisualisation, topological viewGridVis allows an individually adaptable visualisation of online data. The topological view provides a rapid overview of energy distributionwith the possibility of localising power faults by comparing the individual measurement points and by offering the possibility to check thedefined tolerances at a glance.Customer specific solutions can be quickly and simply implemented through uploading of graphic documents (standard formats such asJPG) with circuit diagrams, production lines or construction plans and incorporating the respective measurement units by drag and dropinto their actual locations. Limit value excesses (e.g. THD-U is too high) and the status of inputs and outputs can also be displayed.Online values and analysisof historic dataWith the graphic line writer function, GridVis enablesrapid online presentation of the selected measurementvalues. In this function, the graph is continuously expandedwith new measurement values. For example, load profilescan be presented through the analysis of historic datain order to produce exact consumption analysis for optimisedelectricity supply contracts. Fault analysis throughthe comparison of various parameters can also be achievedwith a few mouse clicks.Graphic programmingThe graphic programming option for user programs is completelynew in the field of digital power analysers. Programsspecific to the application can be created with this methodsuch as the free programming of inputs and outputs, monitoringof processes or the issue of reports when defined limitvalues are achieved. In addition to the operator-friendly graphicprogramming, the user is also free to program the Jasic ®code directly.programming languageThe Jasic ® programming language offers brand newopportunities. The user is no longer tied to the functionswhich are fixed integrations in the unit; the unit can beexpanded to include more functions. Up to seven of thesefreely definable user programs can be processed simultaneouslyin the unit.27