Design And Implementation Of Photovoltaic Power Station On-line Monitoring And Malfunction Diagnosis System

With the continued deterioration of the global energy crisis and the living environment, there is a growing emphasis on the development of renewable energy sources can be used. Solar photovoltaic power generation is clean, zero emissions, inexhaustible characteristics of a preferred alternative to traditional fossil fuels. Photovoltaic plant in support of information technology, the introduction of the monitoring system in power plant operations, the purpose of the monitoring system of the power station by the main power generation. equipment to be monitored. The software in the realization of infrastructure output performance monitoring based on the realization of the monitoring data of the statistical calculation. The results of the performance indicators reflect the determination, in order to analyze the status of plant operations.Based on actual research, analysis of the actual needs of the photovoltaic equipment manufacturers, photovoltaic power plant operation and maintenance personnel, and developed software. According to the Statute of CDT common power system, using serial communication technology, on the Windows operating system, data communication functions. Real-time collection of photovoltaic DC side voltage, current, AC voltage inverter side, current, frequency signals, but can also collect meteorological equipment irradiance, temperature, humidity, wind speed and direction signals. To achieve real-time monitoring of power plant siteFault diagnosis module photovoltaic products based on existing production levels and relevant industry standards, the built-in software standard parameters. According to the actual operating parameters of photovoltaic power plants, the use of VC ADO database technology from the system, the transfer of the corresponding standard indicators can be classified index swap take treatment, targeted calculation and analysis to arrive at PV power plant operating conditions and technical specifications, for online analysis of the power plant’s operations.The system adopt a friendly mode of operation, the user can according to need to obtain the parameters, the system to complete the processing of the data of the output parameters, directly reflects the operation index of power plant, and can be reflected comprehensive operation index parameters of the power station. Including: DC power generation efficiency of photovoltaic power plants, the AC power efficiency, power efficiency, the history of operation such as important parameters of the attenuation trend. The user can also be combined with the history of the plant power data were compared with the existing power generation, power plant operation trend that barriers to plant, effective prevention, timely troubleshooting. A simple system of operating mode, the output of a graphical interface, can meet the requirements of operation and maintenance personnel of non PV solar photovoltaic power plant operation and maintenance, greatly reducing the threshold of photovoltaic power plants, save maintenance cost.