Русская версия English version

The problem of verifying electric power system simulation tools and its solution concept

A.A. Suvorov, A.S. Gusev, A.O. Sulaymanov, M.V. Andreev

Vestnik IGEU, 2017 issue 1, pp. 11—23

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Abstract in English: 

Background: The urgent problems of design, research and exploitation of electric power systems are solved by using complete and reliable information about the processes in the equipment and power system as a whole. In view of specific operating conditions of power systems, such information is mainly obtained by mathematical modeling. However, the dominating purely numerical models and different software systems for their realization do not always provide complete and reliable data as the modelling techniques often have to be simplified and used with considerable restrictions. All this makes it especially important and necessary to verify these tools.

Materials and Methods: The developed hybrid tool of power system simulation has been verified as a reliable data source. The tool employs the continuous implicit integration method to accurately solve mathematical models of the equipment and power system as a whole at the analog level; reproduces all kinds of lateral and transverse commutations and natural node formation in modeled three-phase circuits at the physical level;  and sets the parameters and controls modeling as a whole at the digital level.

Results: The paper identifies and analyses the reasons why digital tools of power system simulation produce incomplete and unreliable data, in particular those based on numerical integration of rigid nonlinear systems of differential high-dimension equations. A concept has been developed to verify power system simulation tools by using a hybrid modeling tool that enables verification by data about quasi-steady-state-modes obtained from operational and informational systems.

Conclusions: The one-sided numerical approach to simulation cannot solve the verification problem due to the absence of necessary field data about the relevant modes and processes. The only way to solve the problem is to use a set of modeling tools to obtain the necessary volume of data equivalent to the field data.

Key words: electric power systems, real time, theory of discretization techniques, ordinary differential equations, verification, multiprocessor hybrid system, operating and informational system.

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Ключевые слова на русском языке: 
электроэнергетические системы, реальное время, теория методов дискретизации, обыкновенные дифференциальные уравнения, верификация, мультипроцессорная гибридная система, оперативно-информационный комплекс
Ключевые слова на английском языке: 
electric power systems, real time, theory of discretization techniques, ordinary differential equations, verification, multiprocessor hybrid system, operating and informational system
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