Using digital twins to estimate and calсulate of electric power systems modes

Abstract

Relevance: the work is related to the need to improve the accuracy and efficiency of the calculation of modes and the assessment of the state of the art in order to increase the efficiency of operational management of electric power systems (EPS). Increasing the accuracy and efficiency of calculations can be achieved by using digital twins of EPS, which allow to fully simulate various modes (steady-state, symmetric, complex-nonsymmetrical, etc.) and determine the parameters necessary for operational control of EPS. Analysis of the use of digital twins shows great prospects for their use in the energy sector and other sectors of the economy.

Aim: to show that the use of digital twins in the calculation of operating modes and the estimation of the state of EPS increases the efficiency of calculations, accuracy and efficiency of dispatch control; review digital twins and their application to the computation of complex nonsymmetrical modes of EPS.

Methods: for digital modeling of various types of EPS modes, the concept of digital twins (DT) is used; calculations of modes are carried out based on the method of symmetrical components; when calculating complex nonsymmetrical modes, matrix methods are used, as well as the concept of ideal transformers.

Results: a brief ontology of digital twins is presented; the efficiency and versatility of using digital twins in calculating various types of modes and assessing the state of the EPS is shown using the example of a mathematical model of complex nonsymmetrical modes.