The paper presents the characteristics of the main malfunctions of 110 kV power transformers and the causes of their occurrence. Methods of control in operating conditions are considered. The division of control methods into groups has been carried out.
The methodological approach to substantiating the long-term development of the backbone electric network is considered, taking into account its infrastructural function and the basic principles of market management of the power system. The description of mathematical tools is presented. The possibilities of using geoinformation technologies are given.
The paper discusses the topic of increasing the reliability of overhead power transmission lines of distribution networks of 0.4–10 kV. The relevance of the introduction of information and measurement systems for monitoring the parameters of overhead power transmission lines to ensure the reliability of power supply to consumers and solving the problems of operational and technological management of distribution networks is substantiated. The authors proposed an information and measurement system for monitoring operational and meteorological parameters of overhead power transmission lines in order to provide technical support to operational personnel and improve the quality of electric power transmission services provided to consumers.
The article considers the examples of digital substations implementation in the existing power system in Russia and in the power systems of other countries. The advantages of the transition to digital signal transmission at all levels of substation management are determined. The factors constraining the spread of digital substations in Russia are revealed. The analysis of features of realization of digital substations on the basis of existing traditional substations is carried out. As an example, the section of the power system in Omsk containing two 110/10 kV and 35/10 kV step-down substations and connections between them is considered.
The architecture and composition of the PLC, the implementation of circuitry mainly relay circuits are considered. Data on the structure, algorithms, design and application of the PLC are presented. Examples of the implementation of modular, compact and slot PLCs, as well as the integration of PLCs into transport and dispatching automatic control systems are given.
The article discusses the socio-economic foundations of labor protection, the organizational prerequisites for assessing and identifying hazards as an integral part of the labor protection management system (health and safety management system), contributing to the reduction of occupational and industrial risks and accidents at the workplaces of personnel of organizations of various types of economic activity, reducing the employer's costs for carrying out preventive preventive measures.
