A utility maximization strategy for the secondary system operation quality optimization of intelligent substation

At present, the lack of actual operation experience of the intelligent substation secondary system results in indeterminate maintenance strategy, time-consuming and laborious routing inspection, blindness in maintenance work and some other issues. Based on this, a comprehensive evaluation system of the operation quality of the secondary system is realized firstly. Secondly, the utility function is defined, which can quantitatively represent the influence of the index value change on that of the index evaluation value. Thirdly, the threshold of the operation status of the secondary system is determined, according to the results of the evaluation of the secondary system operation quality. Finally, A utility maximization strategy for the secondary system operation quality optimization of intelligent substation is proposed, and a specific example is given to generate a quality improvement scheme. This scheme can reduce the maintenance actions, which will help to develop the arrangements for maintenance tasks. Effectiveness of the proposed method is verified by the results of the example.