| The energy demand of the world's social development is increasing day by day,the energy shortage caused by the traditional energy over-exploitation and the environmental problems are becoming more and more serious,and the research on the development of new energy has been paid more and more attention.Compared to traditional energy,new energy has the advantages of renewable and environmentally friendly.In order to overcome the new energy in the distributed power generation process of poor continuity,volatility and low energy efficiency and other shortcomings,micro-grid technology developed by researchers.Microgrid solves the shortcomings of distributed power generation,and has the advantages of high system efficiency and convenient control.The research and development of micro-grid technology has a strong practical significance.For the micro-grid,the system is safe and stable operation is essential,so the micro-grid monitoring system design and implementation is essential.Based on the research platform of AC/DC hybrid microgrid built in the laboratory,the microgrid monitoring system is designed and implemented.The monitoring system of this project is based on the virtual instrument technology.Lab VIEW is used as the software platform for the monitoring system to design and monitor the system.The data acquisition and processing of the micro-grid are carried out by using Advantech's PCI-1762 data acquisition card and PCI-1680UCAN communication card as the basic hardware,The microgrid monitoring system is analyzed and designed.The main contents of this paper are as follows:1,The structure of microgrid system and the function of various components of microgrid and the requirements of monitoring system are analyzed.To determine the overall design of micro-grid monitoring system.2,Using LabVIEW to write microgrid experimental platform monitoring system to achieve the micro-grid converter CAN bus communication to complete the data acquisition,data transmission data analysis work,to achieve the micro-grid smart meter RS-485 communication The data sent to the host computer,and through the data acquisition card PCI-1762 to complete the micro-grid in the relevant circuit breaker state acquisition and remote control.Completed the monitoring system database design,database selection with windows comes with Access database for the monitoring system database,through the SQL statement to complete the form of the establishment and data storage.3,The main interface of the monitoring system is designed so that the real-time data of the microgrid can be displayed intuitively.Based on this,the relevant electrical parameters are set up by the user,and the purpose of monitoring and protecting the microgrid is achieved.4,The design and verification of the microgrid monitoring system and the related characteristics of microgrid are carried out to provide scientific reference for the research and development of microgrid. |
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