OPERATION OF THE “MODE” SOFTWARE PACKAGE IN REAL-TIME MODE

The software for analyzing the operating modes of electric power systems and networks is presented. The theory of calculations, a general description of the software package (SP) and recommendations for its operation are considered. The theoretical foundation is nodal equations and modifications of the Newton method. The SP uses nonlinear equations of nodal voltages, where current sources are represented by a nonlinear function. The mathematical apparatus uses the power balance equation and is presented in matrix form. The iterative process ends with convergence control, which is implemented using the imbalance vector. The principles and sequence of working with the SP are presented in detail. The window when starting the program is considered. An example of data entry for schemes with eight and three nodes is given. The window for setting branch parameters is presented. The quick view mode is considered. An example of the content of the ‘DAN’ file is considered. The selection of calculation options, correction of initial data and setting the number of iterations are presented. An example of the window for outputting results and exiting the program is considered. The output of results is carried out by network branches. The program provides a quick view of the calculation results. SP hardware: IBM-compatible computer with a 650 MHz processor, 512 MB of RAM and 10 MB of free disk space. The program is compatible with Windows operating systems. The SP operates in real time. The developer of the calculation program is the Department of Electrical Power Transmission of NTU "KhPI". The initial versions of the program were written in BASIC, and the latest ones in Python 3.5. The SP is used by employees in the educational process and in scientific research.