POWER QUALITY DATA LOGGER WITH INTERNET ACCESS

This paper describes originally designed mono-phase power quality data logger (PQL), a successor of mono-phase power quality analyzer (PQA) presented earlier. The primary purpose of the analyzer was to illustrate the capabilities of the used development board to the students of Microprocessor software and to help the students of Power networks to visualize disturbances generated by different electronic devices. Power Quality Data Logger adds time as another variable and enables students to visualize and measure power quality or distortions over time. If PQA is compared to a still photo camera, then PQL can be compared to a movie camera. The main idea was to extend the functionality of the predecessor in the way that data could be recorded or streamed in real time, allowing the user to analyze them on-site or off-site, in real time or later. An independent network module has been added to the device, making it capable to stream data over the LAN or the Internet.