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Sunshine Power has obtained invention patent authorization: "An insulation detection system, insulation detection method, and photovoltaic system"

Article Source：Qichacha | Author：Securities Star | Issuing Time：2024.05.16
Securities Star News: According to data from Qichacha, SUNGROW (300274) has obtained a new invention patent authorization, titled "An Insulation Detection System, Insulation Detection Method, and Photovoltaic System". The patent application number is CN202110516137.2, and the authorization date is May 14, 2024.



Patent Abstract: The insulation detection system, insulation detection method, and photovoltaic system provided by the present invention are applied in the field of photovoltaic power generation technology. The insulation detection system includes a current acquisition system, a grounding control circuit, and a control system. The grounding control circuit is connected between the DC bus of the inverter and the ground, and the control system is respectively connected to the current acquisition system and the grounding control circuit. The current acquisition system collects the output current of each photovoltaic string in the photovoltaic system, and the control system controls the grounding control circuit to connect the DC bus and the ground, and detects the ground insulation of the corresponding photovoltaic string based on the output current of each photovoltaic string. The present invention is capable of collecting the output current of each photovoltaic string, and detecting the ground insulation of the corresponding photovoltaic string based on the obtained output current, determining the specific photovoltaic string with unqualified ground insulation, achieving more accurate insulation detection, facilitating fault location in the troubleshooting process, saving a lot of manpower and material resources, and meeting practical application needs.

Since the beginning of this year, SUNGROW has obtained 315 new patent authorizations, an increase of 89.76% compared to the same period last year. Based on the financial data of the company's 2023 annual report, the company invested 2.447 billion yuan in research and development, a year-on-year increase of 44.63%.
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