scholarly journals ANALYSIS OF THE MAIN COMPONENTS OF EFFICIENCY OF POWER SUPPLY SYSTEMS TO RURAL CONSUMERS

2019 ◽  
Vol 14 (3) ◽  
pp. 96-102
Author(s):  
Александр Виноградов ◽  
Aleksandr Vinogradov ◽  
Алина Виноградова ◽  
Alina Vinogradova
Keyword(s):  
Power Quality ◽  
Power Supply ◽  
Methodological Approach ◽  
Quality Of Services ◽  
Electricity Supply ◽  
Time Dependencies ◽  
Rural Consumers ◽  
Main Components ◽  
Supply Systems

Interpretation of the efficiency of power supply systems is proposed, according to which the main criterion of efficiency is minimization of costs for the operation of the power supply system under certain conditions related to the reliability of power supply, power quality and timing of technological connections. The methodological approach to improving the efficiency of power supply systems for rural consumers requires the development of efficiency criteria that would allow all measures to improve the reliability of electricity supply, power quality, shorten time and improve the quality of technological connections to lead to uniform indicators by which to evaluate the effectiveness of these measures. The costs arising from the operation of power supply systems can be divided into stimulating and providing. Both of these components, in turn, are also divided, while the stimulating costs include those components of costs that stimulate electricity supply companies to comply with the requirements of reliability of power supply, power quality, quality of services of technical connections. Regulation of incentive costs, which include damages from interruptions in power supply, compensation costs, lost profits, etc. allows you to manage the efficiency of power supply systems. Providing costs include investment and operating costs, since these types of costs provide the ability to fulfill the conditions of quality of services provided by electricity supply companies. All components of the costs associated with the values ​​of the time of interruptions in the power supply, the time of the mismatch of the quality of electricity and the time of the technical connections. The dependencies of component costs on the time of interruptions in power supply are shown. These dependencies can be interpreted in the opposite version, as time dependencies on costs. This reading allows them to develop incentive mechanisms for energy companies and consumers to improve the reliability of power supply, power quality and quality of connection services.

scholarly journals Improving quality of ac electric power supply of autonomous power sources using in agriculture

2020 ◽  
Vol 193 ◽  
pp. 01024
Author(s):  
Olga Milashkina ◽  
Vadim Zlobin
Keyword(s):  
Power Supply ◽  
Voltage Regulation ◽  
Voltage Regulators ◽  
Electricity Supply ◽  
Control Laws ◽  
Power Sources ◽  
Electric Power Supply ◽  
Use Of Technology ◽  
Supply Systems

Autonomous AC electricity supply systems are now widely introduced in agriculture. As the experience of operation of these electricity supply systems has shown, their various properties, determined largely by the type of voltage regulators and sensors used, do not always fully meet the constantly growing requirements for the quality of electricity. Further improvement of voltage regulation systems, and, consequently, the quality of electricity, is associated with the use of technology in them that can implement optimal control laws.

scholarly journals Improving the quality of electricity in the power supply systems of the mineral resource complex with hybrid filter-compensating devices

2021 ◽  
Vol 247 ◽  
pp. 132-140
Author(s):  
Yurii Sychev ◽  
Roman Zimin
Keyword(s):  
Mineral Resource ◽  
Mathematical Models ◽  
Power Quality ◽  
Power Supply ◽  
Active Filters ◽  
Hybrid Filter ◽  
Higher Harmonics ◽  
Compensating Devices ◽  
Supply Systems

The urgency and necessity of choosing and justifying the structures of hybrid filter-compensating devices based on series and parallel active filters to improve the quality of electricity in the power supply systems of enterprises of the mineral resource complex is shown. Mathematical models of hybrid filter compensating devices based on parallel and series active filters have been developed. Based on these mathematical models, computer simulation models of the indicated hybrid structures have been developed. The results of simulation showed the effectiveness of the correction of power quality indicators in terms of reducing the level of higher harmonics of current and voltage, as well as voltage deviations. The degree of influence of filter-compensating devices on the power quality indicators, which determine the continuity and stability of the technological process at the enterprises of the mineral resource complex, have been revealed. It has been established that a hybrid filter-compensating device based on a parallel active filter can reduce the level of higher harmonics of current and voltage by more than 90 and 70 %, respectively, and based on a series active filter, it can reduce the level of higher harmonics of voltage by more than 80 %. Based on the simulation results, the possibility of compensating for the reactive power of a hybrid structure based on parallel active and passive filters has been revealed. The possibility of integrating hybrid filter-compensating devices into more complex multifunctional electrical systems for the automated improvement of the quality of electricity is substantiated, as well as the expediency and prospects of their use in combined power supply systems based on the parallel operation of centralized and autonomous sources of distributed generation.

Power Quality and Resonances in Power Supply Systems with Non-Sinusoidal Loads

2017 ◽  
Vol 25 ◽  
pp. 143-150
Author(s):  
Yurii Papaika ◽  
Oleksandra Lysenko ◽  
Grzegorz Kosobudzki
Keyword(s):  
Spectral Analysis ◽  
Power Quality ◽  
Coal Mine ◽  
Power Supply ◽  
Electromagnetic Compatibility ◽  
Electrical Networks ◽  
Voltage Quality ◽  
The Impact ◽  
Supply Systems

The stress is made on the necessity to take into account the impact of higher while analysing the quality of voltage in power supply systems of coal mine. The process of resonances in power supply systems is explained in terms of physics, the sources generating this kind of interference are described. Mathematical dependences that allow to identify resonances in power supply systems are provided. The focus is placed on the feasibility of using spectral analysis in computations. To investigate the understudied aspects of voltage quality and electromagnetic compatibility and provide mathematical description for the analysis of resonances in electrical networks with powerful non-sinusoidal loads.

Analysis of Regulatory Documents on the Creation and Operation of Intelligent Power Supply Systems for Rural Consumers

2021 ◽  
Vol 1 (42) ◽  
pp. 8-15
Author(s):  
Aleksandr Vinogradov ◽  
◽  
Anatoliy Seyfullin
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electricity Markets ◽  
Power Supply ◽  
Electric Power Industry ◽  
Distribution Networks ◽  
Power Industry ◽  
Regulatory Documents ◽  
Rural Consumers ◽  
Supply Systems

The construction of intelligent power supply systems for rural consumers (microgrids) is a promising concept for the development of the energy infrastructure of agricultural facilities. In the process of designing and operating micro-networks, a large number of technical, organizational and legal issues arise, the correct answer to which affects on the reliability, quality and efficiency of electricity supply to agricultural facilities. The analysis of the documentation regulating these processes is of particular relevance. (Research purpose) The research purpose is in analyzing the documentation regulating the construction and operation of intelligent power supply microgrid systems for rural consumers. (Materials and methods) The article reviews regulatory documents in the field of regulation of the electric power industry, distributed generation facilities, renewable energy sources, and the functioning of retail electricity markets. Authors used the method of system analysis, methods of comparisons and analogies, and expert assessments. (Results and discussion) The article presents the issues of functioning of micro-networks of rural consumers as part of the power system, in retail electricity markets; implementation of technological connection and integration of micro- networks into distribution networks. Authors evaluated the regulatory and technical documents regulating the general technical requirements for the design and operation of micro-networks. Domestic and foreign standards for the connection and parallel operation of micro-networks with distribution networks as part of the power system and special documents on micro-networks has been studied. (Conclusions) The article proposes measures for the development of GOST R based on the European IEC TS 62898-1 «Microgrids», harmonized with the requirements of Russian standards, taking into account the features of the Russian electric power industry and agriculture. The article notes the need to make changes to the Russian network codes to ensure the integration of rural micro-networks. The measures of state support aimed at stimulating the spread of intelligent power supply systems for rural consumers were cited.

The Development of a SMPS Monitoring System Based on ZigBee

2013 ◽  
Vol 333-335 ◽  
pp. 1704-1707
Author(s):  
Jun Ho Ko ◽  
Ming Jin ◽  
Sung Ho Park ◽  
Yoon Sang Kim
Keyword(s):  
Power Quality ◽  
Monitoring System ◽  
Medical Devices ◽  
Power Supply ◽  
Power Source ◽  
Temperature Data ◽  
Quality Monitoring ◽  
Monitoring Systems ◽  
Power Quality Monitoring

The rapidly increasing usage of high-powered devices and the high specification in personal and industrial/medical devices has led to a greater demand for a SMPS for high-powered devices. A stable and reliable power source for such devices and research on power quality monitoring systems are needed. To these ends, this paper introduces a SMPS monitoring system based on ZigBee communication. The SMPS monitoring system uses ZigBee to collect the voltage, current, and temperature data from SPMS in real time. The collected data are visually synchronized and the current power supply status is displayed to the operator. In addition, to prevent any decline in the quality of the power, the system gives feedback via smartphone to the operator if errors are detected.

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