高压套管运行状态的一种主客观融合评价方法

Subjective and Objective Fusion Evaluation Method on High Voltage Bushing Running Status

现场运行情况表明,高压套管为电力变压器附件中发生故障的概率较高的组件之一。因此对其开展运行状况评估十分重要。文中提出了一种基于布谷鸟算法优化的主客观融合评价方法,建立了以一个含有套管的对地末屏介损、电容量变化率、套管末屏对地绝缘电阻、套管油中气体含量以及维修次数等指标的套管运行状态评估体系,并以一台220 kV油纸电容式套管为例进行了计算。该方法获得的评估值更逼近套管的实际运行状态,具有评估因素全面、量化清晰及可操作性强等优点,可为相关研究人员提供参考。

The field operation shows that the high voltage bushing is one of the components with high probability of failure in the power transformer accessory. Therefore,it is very important to carry out the assessment of its running status. In this paper,a subjective and objective fusion evaluation method based on the cuckoo algorithm optimization is proposed,and a running status evaluation system with gas content and maintenance times and other indicators is built. An example of 220 kV oil-paper bushing is also calculated. The evaluation of this method is more close to the real running status of the bushing,which has advantages such as comprehensive assessment,clear quantification and operability. It can provide reference for relevant researchers.