Remaining Life Prediction Method of Relay Protection Equipment Based on Digital Twin

Abstract

Under the premise of ensuring the safety and reliability of equipment, the power system takes the highest economic benefit of long-term operation of equipment as the core. It considers the whole process of single equipment, related projects, and the whole system operation. It also pursues a theoretical and technical means of optimal long-term operation economic benefit. Its core is to analyze, predict and control, and make the final decision by integrating various influencing factors. This paper combines the algorithm with equipment operation and maintenance business and uses the algorithm to evaluate the life of equipment so as to formulate maintenance standards. The digital twin technology is adopted to predict the life of the relay protection equipment, and the simulation experiments are summarized. The MAPE of all simulation experiments is within 2%, and the simulation can be completed within 2 s. The reliability of the equipment is preliminarily estimated by realizing the law of the life of the equipment, and preventive maintenance is realized by predicting the life of the equipment. MAPE of all simulation experiments is within 2 <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">%</inf> , and simulation can be completed within 2 seconds. The reliability of equipment is preliminarily estimated by realizing the life rule of equipment, and preventive maintenance is realized by predicting the life of equipment.