Preventive testing of electrical equipment is a key factor in ensuring its reliable operation and preventing the occurrence of malfunctions that can lead to serious production failures. Regular insulation monitoring, verification of protective systems and measurement of key parameters make it possible to identify potential problems in a timely manner and prevent their development. Special attention is paid to the insulation condition, as it directly affects the safety and efficiency of the equipment. The use of various diagnostic techniques, such as resistance measurement, capacitance and absorption coefficient analysis, allows for a deeper understanding of the insulation condition and timely response to its deterioration. A systematic approach to diagnostics based on regular testing and the use of specialized equipment significantly reduces the risk of accidents and increases the overall efficiency of electrical equipment. This is especially important for the agricultural sector, where the smooth operation of machinery is a critical factor for successful farming.
The method of calculating the parameters of the control circuit in the presence of two and four bridges in the pole of the converter substation is given. The specificity of converter transformers and valves in the domestic ±750 kV control panel, which served as a prototype 30 years later for the Chinese 800 kV control panel, is noted. The noted features make it possible to recreate the implementation of domestic DC electrical equipment to increase the reliability and controllability of power supply.
The paper studies the actual aspects of adjustment of relay protection and automation devices (RPA), the placement of which today at power facilities is realized by using special metal cabinets. The general information and key stages of verification works during adjustment of the designated electrical equipment are presented. The peculiarities of realization of the following measures are considered: verification of compliance of the electrical connection scheme of RPA circuits with the design documents; general and functional verification, as well as adjustment of RPA organs. Important tasks of visual inspection of cabinets are listed. Particular attention is paid to the principles of measuring and correcting electrical parameters, as well as testing and checking the operation of protections. The nuances of adjustment of modern RPA cabinets based on microprocessor technologies are briefly outlined.
The application software of each element of the PTK subsystems of the upper block level system (servers/workstations) includes the working software of the server/workstation, which are uniform for the entire upper block level system, and the database of configuration parameters corresponding to this element. In the system, for six subsystems of the upper block level system, the configurator creates six databases of configuration parameters for workstations, six databases of configuration parameters for servers. The interface software is located in 13 sets of gateways, which are part of the adjacent subsystems of the automated control system. A corresponding database of configuration parameters is installed for each of them.
Compliance with technical regulations and regular monitoring of the condition of electrical components such as connectors and insulators is critically important for reliable and safe operation of energy systems. These elements affect the operational efficiency and safety of the lines, and regular measurements and inspections help to avoid serious accidents and malfunctions. It is also important to monitor the condition of transformers and auxiliary devices: prevention and periodic oil replacement, as well as quality control, maintain performance and prevent problems. The use of modern technologies and equipment, such as measuring rods and megohmmeters, simplifies diagnosis and increases its accuracy.
A physical and mathematical model and theory of calculation of an electric generator consuming only the latent energy of space is developed. The theory describes currents and voltages in a two-circuit real-virtual generator (RVG) of transformer type. RVG contains real and virtual magnetically coupled electric circuits. In this case, the virtual circuit integrally describes invisible electromagnetic energy processes occurring in space. A series of expressions allowing to form an algorithm for calculating the electrical parameters of a real RVG circuit is obtained. The theory opens up the possibility of developing, on the basis of calculations, simple designs of generators without moving parts, transforming the latent energy of space into real electrical energy without the use of any fuel.
The frequency response analysis (FRA) has seen significant development and widely used application in the diagnosis of power transformer conditions in recent years. The frequency characteristics of the windings contain integral information about the electrical and mechanical state of both the windings and the magnetic core of the power transformer. Therefore, FRA has great potential for identifying damages not only in the windings but also in the magnetic system based on the analysis of frequency characteristics. The results of the conducted studies are presented, in which the emergence of a short-circuited loop with varying resistance in the magnetic system was modeled. Based on these results, characteristic frequency characteristics of the primary winding were obtained. Conclusions were drawn regarding the typical changes in frequency characteristics in the presence of a short-circuited loop and the sensitivity of the examined frequency characteristic measurement schemes.
The industry of any country consists of a large number of diverse industries, such as mechanical engineering or electric power industry. These are the areas in which a particular country is developing, and different countries may have different accents depending on many factors such as natural resources, technological development, and so on. This article will focus on one very important and actively developing industry today – the electric power industry. The electric power industry is an industry that has been constantly developing over the years, but it was in recent years that it began to actively move forward, pushing humanity to use more environmentally friendly energy sources.
