Tianjin Port Yi Heating has applied for a patent for a cloud-based distributed photovoltaic power station monitoring management method and system, aimed at enhancing the diagnostic accuracy and grid stability of distributed photovoltaic power stations in large-scale scenarios. The patent, referenced as CN121395699A, was filed on December 2025, according to information from the National Intellectual Property Administration.
The patent summary indicates that this invention pertains to the field of intelligent monitoring technology for photovoltaic power stations. It outlines a method that involves collecting operational parameters from photovoltaic strings. By applying bounded micro-disturbances within the stable range of maximum power point tracking, the method extracts characteristic vectors. A topology map is constructed, and virtual current-voltage characteristic curves along with key feature points are reconstructed. Health indicators at the node level are obtained from the topology map and combined with reference distributions to generate anomaly scores.
Based on the shape deviation of the virtual current-voltage characteristic curves and the distribution of node-level health indicators, the method identifies abnormal strings and their associated nodes. It optimizes the issues of power generation revenue, degradation risk, and power fluctuation under parameter constraints, ultimately providing active power limits and power factor control trajectories for execution at edge nodes. This application significantly enhances the diagnostic precision and grid stability of distributed photovoltaic power stations, as well as improving scalability and intelligence levels.
According to Tianyancha data, Tianjin Port Yi Heating Co., Ltd., established in 2004 and located in Tianjin, primarily engages in the production and supply of electricity and heat. The company has a registered capital of 5 million RMB. Data analysis from Tianyancha shows that the company has participated in 828 bidding projects and holds 32 patents, along with 132 administrative licenses.
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