Method for evaluating running state of thyristor converter valve with interpretability

Abstract

The invention discloses a method for evaluating a running state of a thyristor converter valve with interpretability, which comprises the following steps of: determining a state quantity and a state grade, and inputting a converter valve operation state data set; training a CatBoost classifier, and evaluating a result according to the global accuracy rate and the recall rate; and evaluating the operation state of the converter valve in real time, and explaining the result of the evaluation model based on an SHAP attribution analysis method. The method has high accuracy in the aspect of state evaluation of the extra-high-voltage direct-current transmission thyristor converter valve, the algorithm is simple and easy to implement, the operation logic and the real reasoning process of the evaluation model can be explained, key factors influencing the evaluation result can be found out, engineers can be helped to correctly judge the operation state of the converter valve to a certain extent, targeted theoretical guidance is provided for making a maintenance decision, and the method has great application value and prospect.

Description

technical field [0001] The invention relates to the field of thyristor converter valves, in particular to an interpretable method for evaluating the operating state of a thyristor converter valve. Background technique [0002] The good operation status of power equipment is the basis for the safe and stable operation of the power system. Power outages caused by equipment failures will seriously affect the stable operation of the power grid and cause huge economic losses. Therefore, for equipment operating in complex working conditions and harsh environments, comprehensive, timely and accurate monitoring and analysis of equipment operating status is an important measure to ensure its safe and stable operation. Thyristor converter valve, as the core equipment of UHV DC transmission, plays a key role in rectification, inverter, switching, etc. If it can accurately evaluate its operating status and provide an understandable explanation plan, abnormal parts can be found in time ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned deficiencies mentioned in the background technology, the purpose of the present invention is to provide an interpretable thyristor converter valve operating state evaluation method, the present invention can effectively avoid the strong subjectivity and insufficient interpretability in the traditional method. The problem is that it has higher accuracy and faster speed in evaluating the state of thyristor converter valves. The algorithm is simple and easy to implement, and it can explain the operation logic of the evaluation model and find out the key factors that affect the evaluation results. To a certain extent Help engineers correctly judge the operating status level of the converter valve, and provide targeted theoretical guidance for the maintenance decision of the thyristor converter valve, with great application value and prospects

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