| With the development of utility grid and the increased concern for power quality (PQ), the more functions for power quality monitoring system (PQMS) is required by utilities and customers in the past few years. In the paper, firstly, the national standards of PQ and the correlative algorithms are introduced briefly, the design of monitoring instrument for a distributed PQMS is proposed. Through the study of the subject , its aim was to design a collection of POM data terminals, and the data collected by the pretreatment through the GPRS network to the monitoring centre ,which established a GPRS-based distributed PQM system, for the power system automation and network management requirements, the paper had builded a wireless, real-time, embedded long-range, economic power quality monitoring platform. |