Development Of A Network Power Quality Analyzer Based On Embedded System

With the rapid society and economic development, more and more nonlinear load were added on the power line, so power quality problems are getting worse, however, user's equipments are becoming more and more sensitive to power quality, which makes power quality monitoring become increasingly important. Traditional power monitoring equipments usually have the customized functionality, and have no network interface so they can not meet the real-time on-line monitoring requirements. This paper proposes the use of high-speed high-precision ADC to perform analog data acquisition, ARM processor and high-speed floating-point DSP to do signal analysis and network connections, by the test of the prototype, it proves that the analyzer is a high-performance, low-cost instrument, which has a friendly user interface and the ability to conduct long-time power signal acquisition and analysis. The system also contains an optional wireless PT secondary loop voltage drop analysis module, which can be used to replace the traditional analyzer, to bring the convenience of measurement.