GPRS based power quality monitoring system

A cost effective scheme was proposed to realize real-time power quality monitoring for remote distribution system. The key point is to realize the communication between monitoring substations and monitoring centre. The communication can be carried out based on general packet radio service (GPRS). And it has the merit of always on-line, flexible structure and low cost. The design scheme was applied to power quality monitoring systems and satisfactory results were achieved. The scheme can work where the monitoring substations were located in remote wild farms or on mountains. The communication method can also be used in applications where the data flow is not so heavy and there is difficult in wire communication.