Based On Embedded Micro Power Quality Data Acquisition System

The development of the world economy is growing fast, whether developed or developing energy mainly to fossil energy, fossil energy use, resulting in increased carbon emissions, resulting in global warming, extreme weather conditions continue to occur. China is a large developing country, factories around the world, energy demand was significantly higher than other countries to accelerate the research of new energy to solve the energy problem is an integral part of the national strategy. In the study of new energy, micro-grid distributed power the distributed grid technologies based on renewable resources, renewable energy is the future trend of energy development. Micro-network distributed power intermittently, instability and large-scale power electronic devices caused by the use of the distribution network at the access point power quality can not access the power quality requirements, will be a serious impediment to distributed power in promote the use of a wide range, and thus the micro-grid power quality study has important implications.Firstly, research and analysis of micro-grid development and research status, national standards common power quality concepts and connected to power grid. On this basis, in-depth study the acquisition of existing power quality principles and existing power quality acquisition equipment. The course of the study, found that existing micro-grid power quality acquisition equipment acquisition and analysis for large grid power quality, thus complex, high cost of equipment. Micro-grid distributed power experimental platform power quality analysis due to its small size, the use of such devices will greatly improve the cost, cost control has become a primary concern of the design device. Meets the design a micro-grid experimental platform power quality collection inexpensive, simple design requirements, but also meet the requirements of reliability and safety has become a major design principles. MCU Chip powerful processing power and rich peripheral module function greatly reduce the difficulty of the design, a corresponding reduction in the number of components, systematic stability will be greatly enhanced. Take the design strength of electrical isolation to ensure the safety of personnel in the acquisition of high-voltage operation. This is based on the embedded system hardware platform, able to complete on energy data collection. In the data transmission link, the design CAN interface data exchange and RS232interface debug interface to improve the reliability of data transmission and debugging. In this paper, the practical application of power quality collector design.