Abstract
In this letter, a power-quality measurement network for the power system is proposed to integrate electric measurement units with the Internet, global positioning system (GPS), and Linux, Apache, MySQL, PHP (LAMP). A synchronized sensor network is formed to monitor the system's dynamics in a wide-area sense. CompactRIO by National Instruments is used as measurement units to capture voltage at the 110-V outlet and process the signals locally. It has the advantages of ease of portability and standard network communication capabilities. A virtual instrument environment is developed to process measurements and GPS signals. To store and display measurement data over the Internet, a LAMP-based database and Web server are developed. The major advantages of this type of architecture are that they are all commercial-grade software with proven system operation stability and free to use.
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