Research of Automatic Monitoring and Control Strategy of Photovoltaic Power Generation System

Abstract

This paper introduces the design and realization of automatic detection and control system in solar photovoltaic power. It adopts ZigBee technology to solve PV module monitoring and mainly studies its communication network. Through ZigBee network and based on multi-hop distribution network, the data acquisition node initially verifies networking scheme. Then, by modeling analysis of the inverter, this paper puts forward double-loop control strategy of grid-connected current. This control strategy ensures inverter output current is stable sine wave in high quality and provides important assurance for photovoltaic grid-connected power. Finally, it is proved that it is effective to eliminate power network voltage on interconnected system dynamic performance and also effective to reduce total harmonic distortion in grid-connected current, through simulation analysis.