Design And Realization Of Intelligent Remote Monitoring :System For Distributed Photovoltaic Generation

With the constantly development and progress of human society, fossil fuel as major energy today has been heavily used. However, due to its limited reserves, people have to face the problem of energy crisis. Therefore, humans set their sights on renewable energy. In many new renewable energy, solar energy with the characteristics of clean, rich reserves, widely distributed concern by governments all over the world and scholars. Photovoltaic generations have become the most popular way to electricity generation. In today’s photovoltaic power generation system, the advantages of distributed photovoltaic power generation are particularly prominent, It can solve the problem of many remote rural areas and communication base station and meteorological station and isolated island and other public power grid difficult covered places. Because of its widespread distribution and remote location, It’s hard to be real-time monitoring for the operation of system, is greatly restricts the development of distributed photovoltaic power system. Therefore, it is an urgent need to solve problem of develop a reliable performance and convenient use and scientific management remote monitoring system for the distributed photovoltaic generation. This thesis does a research for it.On the basis of discusses the basic principle and the structure of photovoltaic generation system, this thesis combined with the technical characteristics and function requirements of the distributed photovoltaic generation, design of the overall scheme of intelligent remote monitoring system. The main contents of this thesis are as follows:(1) To understand the structure and features of today’s several kinds of photovoltaic generation systems. We should focus on research the analysis of the field of use and advantages about the distributed photovoltaic generation system and aim at the existing problems and the characteristics of the distributed arrangement of distributed photovoltaic generation system. Determine the general design scheme of intelligent remote monitoring system of distributed photovoltaic generation.(2) According to the characteristics of distributed photovoltaic generation, select the appropriate devices and the design of voltage detection circuit. Detect the important parameters of distributed photovoltaic generation system. Combined with the 4 frequency range GPRS communication module MG323 which is produced by Huawei company. Transfer the detection information about distributed photovoltaic generation system to the user in the form of short message. So that the user can real-time monitoring distributed photovoltaic generation system.(3) Using ATmegal6 microcontroller as the central control chip, and using C language design the software to control the microcontroller. The software includes detecting part and the message part. Complete the development of intelligent remote monitoring lower machine for photovoltaic power generation system.(4) Detailed introduction serial communication and SerialPort class. Carefully studied the Unicode code and the AT instruction. Using C# language write the serial data receiving and sending program part of intelligent remote monitoring system PC software. Realized send and receive messages to user terminal and completed the SMS query function part of PC software. Greatly improve the whole operation efficiency of photovoltaic generation system.Through the system actual test show that the PC software of distributed photovoltaic generation intelligent remote monitoring system test well. Voltage detection is ideal, the SMS notification and various functions are normal and regional management more scientific. The remote monitoring system of distributing photovoltaic generation has worked. Meet the basic requirements of distributed photovoltaic generation intelligent remote monitoring system.