Converter station DC voltage divider or current divider secondary circuit state prediction method

Abstract

The invention relates to converter station DC voltage divider or current divider secondary circuit state prediction method and device, computer equipment and a storage medium. The method comprises the following steps of: according to a preset sampling frequency, carrying out timing sampling on a converter station DC voltage divider or current divider secondary circuit to obtain sampling data; determining a monitoring signal according to the sampling data; according to the monitoring signal, determining a monitoring quantity matrix of the converter station DC voltage divider or current divider secondary circuit; inputting the monitoring quantity matrix into a correlation prediction model, and determining a prediction result; and comparing the prediction result with historical monitoring signals in normal operation, abnormal operation and fault states, and determining the real-time predicted operation state of the converter station DC voltage divider or current divider secondary circuit. By adopting the method, the operation and maintenance personnel can master the equipment state information in real time, so that hidden dangers is handled in advance, the troubleshooting efficiency is improved, and the safe and stable operation of the system is ensured.

Description

technical field [0001] The present application relates to the field of high voltage direct current measurement, in particular to a state prediction method, device, computer equipment and storage medium for a secondary circuit of a direct current voltage divider or shunt in a converter station. Background technique [0002] High-voltage or UHVDC power transmission has gradually become the mainstream power transmission method because it can realize long-distance power transmission, and has the advantages of reducing loss, reducing corridors, energy saving, environmental protection, and high efficiency. At the same time, the high-voltage or UHV DC transmission system plays a supporting role in the safe and stable operation of the main grid in the construction of a new power system in the country. At the same time, the clean energy in the west can effectively reduce carbon dioxide emissions through the direct current channel, and will be vigorously constructed in the future. ...

AI Technical Summary

Problems solved by technology

According to field operation and maintenance experience, when this monitoring method issues an alarm, the corresponding equipment in the secondary circuit of the DC voltage divider or shunt has experienced irreversible performance degradation, which has evolved into a fault in a very short period of time, resulting in the unavailability of the secondary circuit

Therefore, this method cannot predict in advance the state of the DC voltage divider or the secondary circuit of the shunt before the alarm value is reached, and inform the operation and maintenance personnel in advance, so as to realize the early disposal of hidden dangers and ensure the safe and stable operation of the system

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