Research And Design On Building Integrated Photovoltaic Electricity Generation-Monitoring System

Building Integrated Photovoltaic Electricity Generation Monitoring System (BIPVEGMS) was taking the building integrated photovoltaic (BIPV) project as its object, completing the data collection from BIPV generator and monitoring the system status. The researching and improvement an improved BIPVEGMS can optimize efficiency of energy conversion, reducing the cost of photovoltaic power generation has very important significance.This thesis was based on a practical engineering of building integrated photovoltaic project which cannot be timely and suitably monitored and developed a BIPV monitoring system under the LabWindows/CVI software platform. After analyzed key characteristics of the various equipment and protocols, we succeeded in real-time monitor DC-combiner-box, Dual-axis solar tracking systems and PV-inverter in the BIPV systems by using Modbus protocol format and the RS-485 communication. Due to the disadvantage in the BIPV System where the communication interfaces of solar radiation measurement system was initially undefined and the protocol could not be accessed, we designed a photovoltaic power generation environmental measurement system base on STM32 frame, which by custom-Modbus protocol to BIPV monitoring system provides the temperature, humidity, solar irradiance data reference. Concerning the management of real time data, to LabWindows/CVI platforms connecting the ACCESS database and Excel function as the foundation, realize the system of data storage and report features, and with TCP/IP communications protocols for foundation, realize the remote network communication function. The system owns friendly interface, and simple operation, well done all pre-function parameters, and meets the system design and application requirements.Thesis provided the method statement of the virtual instrument technology on BIPVEGMS, and expecting improvement has been given.