Capacitance value online calculation method and device, electronic equipment and storage medium

Abstract

The invention discloses a capacitance value online calculation method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring capacitor loop data; based on the charging and discharging state of the capacitor, slicing the capacitor loop data to obtain a plurality of data slices, each data slice including the capacitor loop data in a preset time period; calculating a capacitance value corresponding to each data slice according to the capacitor loop data in each data slice; and calculating a weighted average value of the capacitance values according to a preset weight and the capacitance value corresponding to each data slice, and taking the weighted average value as the capacitance value of the capacitor. According to the method provided by the invention, useless data can be eliminated through a data slicing process, and the calculation amount is reduced. By calculating the capacitance value corresponding to each data slice and calculating the weighted average value, the capacitance value result can balance the difference in each charging and discharging process, the obtained capacitance value is more accurate, and the defects of poor accuracy, low precision and high calculation resource requirement in the prior art are overcome.

Description

technical field [0001] The present invention relates to the technical field of high-voltage power electronics, in particular to an on-line calculation method, device, electronic device and storage medium for capacitance value. Background technique [0002] Capacitors are key components of high-voltage power electronic equipment, and have been widely used in large-scale energy transmission, wind-solar renewable energy grid integration and other fields. In high-voltage power electronic equipment, capacitors are usually in continuous operation. Under the combined effect of long-term electrical, thermal stress and environmental factors, the capacitor electrodes and dielectrics are degraded, and their capacitance values ​​gradually decrease. When the capacitance value drops to a certain level, the capacitor will not work according to the designed working state, that is, the capacitor will fail, and may cause damage to other related components in the circuit, and even cause the p...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor accuracy, low precision and high requirements for computing resources in the prior art, so as to provide an online calculation method, device, electronic equipment and storage medium for capacitance value

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