Power System Transient Stability Assessment Model Construction Using Improved SVM

Abstract

As computer technology and intelligence progress, many fields begin to develop towards intelligence. Power system is an important component of the whole power grid operation and the work of electronic components and electronic devices, so how to evaluate its stability is an important issue to ensure the stable operation of power system. In this study, a power system evaluation model using improved support vector machine algorithm is proposed for the transient state evaluation system of power system. Firstly, the characteristic vector is extracted from the transient steady-state data of power system, and then the traditional support vector machine algorithm is improved by adding Mahalanobis distance. Finally, the algorithm accuracy and precision are compared. It is found that the highest accuracy of the improved algorithm was 96.79%, which was 1.70% higher than that of the lowest algorithm. At the same time, the false alarm rate was lower, which was 0.42% lower than that of the highest algorithm. The accuracy of the improved support vector machine algorithm was 95.62%. Results show a higher accuracy and precision of the improved vector machine algorithm, and it is better in the processing ability and evaluation ability of power system data.

Keywords

• Power system
• transient state
• support vector machine algorithm
• assessment capability
• accuracy