Power quality monitoring system

• Main Authors: ZHAO YONGXIU, LIU QING, GAO YU, WANG BAOLIN, FANG ZICHAO, LI ZHONG, WANG QINGLIANG
• Format: Patent
• Language: English
• Published: 06.05.2015
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SIGNALLING; TESTING; TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS

The invention discloses a power quality monitoring system. According to the power quality monitoring system, communication between ARM (Advanced RISC Machines) and DSP (Digital Signal Processor) is achieved through a ZigBee wireless transmission module, complex wiring procedures are saved, a plenty of vigor and costs are saved, and various power quality parameters such as effective values, power, power factors, the harmonic distortion rate, the harmonic ratio, voltage fluctuation and flickering and three-phase imbalance can be measured. The power quality monitoring system has the advantages of being low in cost, high in reliability, high in capacity, simple in networking and applicable to real-time monitoring of power quality of automatic production line precise instrument and equipment in industrial zones, having practical meanings in productivity improvement, energy conservation and emission reduction of high-technology industrial zones, improving the stability and the detection accuracy of the integral device due to the fact that an active antenna and a passive antenna are arranged inside an antenna, a peripheral circuit is in a constant source current circuit design, and current fluctuation is avoided and meanwhile detecting the temperature of a storage battery.