Monitoring system and monitoring-anomaly location method for photovoltaic power stations

Abstract

The invention relates to a monitoring system and monitoring-anomaly location method for photovoltaic power stations. According to the monitoring system, an information collection terminal of each photovoltaic power station is connected to a sensor for collecting state data of each photovoltaic array in the information collection terminal through a field bus; and each information collection terminal is connected to a collection authentication server of an operation platform through the internet, and the operation platform is in mutual connection with a historical data storage center and a big data analysis platform through the Ethernet. The method mainly comprises the following steps: (I) collecting data; (II) training a multi-hidden layer neural network by virtue of historical status data to obtain abnormal value detection method under the same illumination intensity, and carrying out abnormal value detection on current data, so as to realize the diagnosis and precise positioning of faults of the photovoltaic arrays; and (III) displaying a monitoring result and abnormal positioning information in real time, or pushing the monitoring result and the abnormal positioning information to relevant mobile phones or computers through an internet announce server. According to the monitoring system and the monitoring-anomaly location method, a deep structural model is established, so that the reference number is effectively reduced; and meanwhile, multiple photovoltaic power stations are simultaneously monitored, and the abnormity is timely found and positioned, so that the normal operation of the photovoltaic arrays is guaranteed.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a monitoring system of a photovoltaic power station and a method for monitoring and abnormal location. Background technique [0002] In recent years, with the decrease of non-renewable energy sources such as petroleum and coal, the development of clean energy represented by photovoltaic power generation has become an industry direction supported by national policies. [0003] Photovoltaic power generation is a fluctuating and intermittent power source. Compared with traditional power generation, it is an uncontrollable power source. For example, the increasingly severe smog weather will inevitably affect the efficiency of photovoltaic power generation. In order to reduce the impact of photovoltaic power generation from such random environmental changes and improve power generation efficiency, it is necessary to strengthen the intelligent monitoring of the op...

AI Technical Summary

Problems solved by technology

At present, the management and maintenance of photovoltaic power plants mainly rely on manual inspection. When one of the photovoltaic arrays fails, it is difficult to find out which photovoltaic array is damaged in time.

If the failure of the photovoltaic array cannot be accurately located in time, the failure cannot be eliminated in time, and the abnormality of a single photovoltaic array will cause a significant reduction in the efficiency of the entire photovoltaic power generation system

At present, the untimely handling of photovoltaic array failures is one of the important factors that lead to the inability to maximize the power generation benefits of photovoltaic power plants.

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