Electric network
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Marginal Loss Calculations for the DCOPF Open
The purpose of this paper is to explain some aspects of including a marginal line loss approximation in the DCOPF. The DCOPF optimizes electric generator dispatch using simplified power flow physics. Since the standard assumptions in the D…
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Impact of peak electricity demand in distribution grids: A stress test Open
The number of (hybrid) electric vehicles is growing, leading to a higher demand for electricity in distribution grids. To investigate the effects of the expected peak demand on distribution grids, a stress test with 15 electric vehicles in…
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Distributed generation hosting capacity in electric distribution network in the presence of correlated uncertainties Open
High penetration of renewable distributed generations is one of the most current challenges of electric distribution networks due to resources uncertainties, and hosting capacity limitation of the networks. The challenges may be more criti…
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Technical and economic analysis of parameters of city distribution electric network up to 1000 V Open
The article shows the sequence of development of mathematical expressions of the technical and economic indicators of networks whose voltage is up to 1000 V. In the development of these expressions, methods such as the smallest squares, th…
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Eliminating VT uncertainties in modeling ferroresonance phenomena caused by single phase-to-ground faults in isolated neutral network Open
It is commonly recognized that correct transformer model (particularly topological one) is a key element for any ferroresonance simulations. This paper represents a line of reasoning by which a reliable model of a voltage transformer (VT) …
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Stochastic Electric Vehicle Network Considering Environmental Costs Open
In recent years, many countries have published their timetables to promote electric vehicles. Many researches have focused on the benefits of electric vehicles. Compared with gas vehicles, electric vehicles are more suitable for modern cit…
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A Unified Framework of Quantum Walk Search Open
Many quantum algorithms critically rely on quantum walk search, or the use of quantum walks to speed up search problems on graphs. However, the main results on quantum walk search are scattered over different, incomparable frameworks, such…
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Low voltage electric distribution network planning with demand control Open
This paper proposes a low voltage (LV) electric distribution network expansion planning (EDNEP) incorporating the possibility for the Distribution System Operator to deploy demand response programs based on load shifting in addition to tra…
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Improving the methods of monitoring and automation and mathematical modelling of railway protection Open
Thee paper analyzes the electric traction network and its features. The article shows that the use of one type of protection creates dead zones. To ensure reliability of the protection system, along with the maximum pulse protection system…
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POSSIBLE ERRORS OF CALCULATIONS OF LOSSES OF THE ELECTRIC POWER ON SHOP INDUSTRIAL NETWORKS Open
In the article it is devoted the analysis and researches of origins and values of possible errors from not accounting of the main defining characteristics when calculating losses of the electric power on shop networks of a low tension. It …
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Vector space as an area of the operation risks characteristics for asynchronous electric machines Open
The article is written in terms of topological theory for the asynchronous electric machine (AEM). During operation the vector space properties of AEM are changed under the influence of operational aging and operational damage. The informa…
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Principles of electricity metering in networks with non-liner load Open
The existing approach to electricity metering, which underlies the formation of payment for consumed electricity, has a significant drawback. It can be correctly used in systems with a sinusoidal symmetrical mode, but needs to be improved …
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Reallocating Charging Loads of Electric Vehicles in Distribution Networks Open
In this paper, the charging loads of electric vehicles were controlled to avoid their impact on distribution networks. A centralized control algorithm was developed using unbalanced optimal power flow calculations with a time resolution of…
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DETERMINATION OF OPTIMAL CHARACTERISTICS OF DEVICES FOR VOLTAGE UNBALANCE REDUCING IN LOW VOLTAGE ELECTRIC NETWORKS Open
Ways of searching for optimal ways to improve the quality of electric energy in electric networks with dispersed unbalanced loads using zero-sequence current filters are considered, which take into account the possibility of ensuring the d…
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State Estimation of Electric Power Systems Including FACTS Models (SVC and STATCOM) Open
Nowadays, FACTS devices are among the most promising electrical network technologies. The typical representatives of parallel FACTS devices are a static synchronous compensator (STATCOM) and a state var compensator (SVC). The paper deals w…
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Reviews on Load Flow Methods in Electric Distribution Networks Open
In power system studies, load flow (LF) analysis is one of the most crucial tools. It is the most important and required method of looking at issues with power system design and operation. A series of nonlinear algebraic equations make up …
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ANALYSIS OF STRUCTURE AND TECHNICAL CONDITION OF WESTERN ELECTRIC NETWORKS OF THE REPUBLIC OF SAKHA (YAKUTIA) Open
The paper analyzes the technical condition of the network equipment of Western electric networks of PJSC «Yakutskenergo» for the last 10 years. The geographical location of the networks of the electric networks is shown, which determines t…
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Green technologies in rural electric powerindustry Open
The article examines the indicators of the quality of electric energy and additional power losses due to the asymmetry of the three-phase voltage system in rural distribution electric networks 0.38 kV. Violation the symmetrical mode operat…
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Comparison of different methods to face the huge increase in future load in power distribution network Open
The main challenge of present distribution networks is the huge increase in demand for electricity especially in city center where the demand is increasing vertically for the same geographical area. This work presents the analyses of 5-Mai…
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Probability estimation of ignitions formation in the electrical network Open
\nTheir fire safety is one of the major requirements, which is imposed to electric networks. However extensiveness of methods of her assessment and a different of approaches to definition of factors of danger leads to complication of the c…
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Efficiency of the balancing devices to power quality improve Open
Violation of the symmetrical mode of operation of the electric network causes a deterioration in the quality of electric energy and significantly reduces the reliability of the functioning of electrical equipment and elements of the electr…
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Regulation capability evaluation of individual electric heating load based on Radial basis Function neural network Open
As a time-shifting load that is gradually popularized in the northern region, electric heating load has great adjustment potential. Because the electric heating operation characteristics are affected by many non-linear factors, the traditi…
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Electric Fault Location Methods Implemented on an Electric Distribution Network. Open
This paper compares two electric fault location techniques, [1]&[2]. Using prefault and fault data (voltages and currents) and a model of the network, the algorithms can give an approximation of the actual fault location. They were chosen …
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Angular Velocity's Neural Network Observer of the Electric Drive of TVR - IM Type Implemented in Software Environment LabVIEW Open
One of the common ways to manage a smooth starting and stopping of asynchronous motors are soft-start system. For this provision is necessary to use a closed speed asynchronous electric drive of tiristor voltage regulator - induction motor…
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The Electric Network Frequency Based Method of Forensic Audio Analysis Open
The article describes new possibilities for technical authentication of audio recordings and determination of circumstances in which they were made in the context of Russian forensic practice. The proposed method is based on comparing the …
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PROBLEMS IN MANAGING THE ELECTRICAL ENERGY NETWORK AND WAYS TO ELIMINATE THEM Open
This scientific article examines the problems in the management of the electric power network, the reforms carried out by the state and their results, the existing problems in the network, the production of electricity by countries of the …
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Electric network topology and method of transmission of electric energy Open
The purpose of the work is to reduce losses and increase energy saving in electric networks. To achieve this goal, a multilevel topology of the electrical network and an asynchronous method for transferring electrical energy between nodes …
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A simulink circuit model for measurement of consumption of electric energy using frequency method Open
The following analysis and presentation summarizes the implementation in Matlab / Simulink environment of a prototype model digital energy circuit for measurement of the consumption of electric energy of an electrification network in the i…
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Electric Vehicle Load Prediction Method Based on Back-Propagation Neural Network Open
The development of large-scale electric vehicles puts forward new requirements for safe and reliable operation of distribution network. Accurate and reliable EV load forecasting can effectively support large-scale EV load grid-connected op…
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Analysis of Accidents in 6-110 KV Electric Networks of Kuzbass Power System Open
Power system of the Kemerovo region is unique in terms of the number of hazardous production facilities (coal mines, coal pit). To ensure trouble-free operation of hazardous production facilities and the normal operation of other consumers…