Abstract
The article discusses the creation and use of the software complex (SC) "Search for Disconnected Equipment," which enhances the efficiency of operational personnel considering modern trends in the development of distribution networks. The main modules of the SC are: "Database Formation"; "Analysis of the topology of the electrical network for various operating modes"; "Calculation of the operating modes of the electrical network"; "Identification of disconnected equipment." The developed relational database for the electrical network includes the following entities: node; line; load; switch; transformer; external network. In the second module of the SC, the method of exhaustive search is adapted - breadth-first search (BFS), the distinctive feature of which is the formation of the electrical network (EN) graph as subgraphs. Each subgraph represents a group of interconnected EN objects. Analysis of the EN topology is proposed to be carried out based on formed tuples, formed by the direct product method of elements of specified entities sets (EN objects) and coordinated by the attribute "node number to which the object is connected." As a result, tuples are obtained, including EN objects connected to each of the EN nodes. The implementation of the 3rd module of the SC is based on solving a system of nonlinear equations, compiled according to the method of nodal voltages in the form of power balance, programmatically implemented by the Newton-Raphson method. The results of the 3rd module work are: node voltage values, currents in EN lines, active and reactive power losses. The developed software complex is implemented in the Python programming language using the "Pandapower," "Pandas," "Matplotlib," and "NetworkX" libraries. The results of testing the software complex have shown the reliability of the obtained results and an increase in the performance of operational personnel.
Keywords
electrical networks, disconnected electrical equipment, electrical network graph, software complex
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