The article presents the results of studies aimed at determining the technical efficiency of the use of RG and ne in power supply systems of infrastructure of main Railways. The aim of the study was to study the effect of ne and RG on the reduction of voltage dips. The simulation was carried out on the basis of the MATLAB software system. A network cluster was modeled based on a DC insertion that links non-traction consumers, RG installations, and energy storage to a traction substation.
In modern conditions, the task of reducing land allocation for the construction of electric power facilities becomes particularly urgent. The cardinal way to solve this problem is to use multi-chain power lines (transmission lines). For the practical use of such structures requires the development of methods and tools for computer modeling of electric power systems (EPS), which include multi-chain power lines. Adequate models of such power lines can be implemented on the basis of the use of phase coordinates. In addition to the calculation of modes with the help of these models, the problem of determining the conditions of electromagnetic safety on the routes of multi-chain power lines can be solved.
An approach to the construction of a commercial electricity metering system for microgrid based on the technologies of distributed registry and smart contracts implemented by means of an automated mode control system is proposed. In the present work confirmed the expediency of using technologies based on the distributed registry of the approaches to the construction of automated control system modes in microgrid characterized by a high level of distributed generation and missing or a weak link with a "large" grid. The proposed approach to the equivalence of such microgrids can be used to scale once commissioned system.
The prerequisites for the creation of high-voltage measuring current transformers with almost absolute electrical strength and a wide dynamic range, capable of providing accuracy requirements for both commercial electricity metering and relay protection equipment, are considered. Due to the low cost, the proposed current measuring transformer can be used for any voltage classes.
The article discusses the harm that an electric arc can cause to the equipment of the switchgear and the health of the service personnel, and also discusses the main methods of its detection used in practice. The nature of the arc short circuit in complete switchgear is revealed. The information about the types of protection against arcing, existing at the moment. It is concluded that, despite the great progress in the development of protection systems against arc short circuits, arc short circuits are still a serious problem in the operation of electrical substations.
Experimental study of power quality in the Autonomous power supply system of one of the enterprises of oil and gas industry on the tire 0,4 kV substation 6/0,4 kV. Based on these data assessed the harmonic composition of the voltage and current at different nodes of the electrical network. The analysis of violations of the technological process caused by the presence of harmonic distortions in the power supply system. According to the obtained operational data collected statistics of emergency events of various kinds of electrical equipment affected by higher harmonics.
