scholarly journals Energy Loss Allocation in Smart Distribution Systems with Electric Vehicle Integration

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1962 ◽  
Author(s):  
Paulo De Oliveira-De Jesus ◽  
Mario Rios ◽  
Gustavo Ramos
Keyword(s):  
Distribution Systems ◽  
Peak Load ◽  
Distribution Networks ◽  
Load Model ◽  
Loss Allocation ◽  
Allocation Procedure ◽  
Linear Load ◽  
Non Linear ◽  
Power Models ◽  
Non Linear Load

This paper presents a three-phase loss allocation procedure for distribution networks. The key contribution of the paper is the computation of specific marginal loss coefficients (MLCs) per bus and per phase expressly considering non-linear load models for Electric Vehicles (EV). The method was applied in a unbalanced 12.47 kV feeder with 12,780 households and 1000 EVs under peak and off-peak load conditions. Results obtained were also compared with the traditional roll-in embedded allocation procedure (pro rata) using non-linear and standard constant power models. Results show the influence of the non-linear load model in the energy losses allocated. This result highlights the importance of considering an appropriate EV load model to appraise the overall losses encouraging the use and further development of the methodology

Economic assessment of non-sinusoidal energy in distorted distribution systems

2019 ◽  
Vol 13 (1) ◽  
pp. 196-211
Author(s):  
Narinder Kumar ◽  
Ashwani Kumar
Keyword(s):  
Energy Expenditure ◽  
Distribution System ◽  
Distribution Systems ◽  
Economic Assessment ◽  
Harmonic Load ◽  
Content Type ◽  
Linear Load ◽  
Non Linear ◽  
Non Linear Load ◽  
Voltage Harmonics

Purpose The purpose of this paper is to analyze annual energy expenditure in the presence of non-linear load and substation voltage harmonics in distribution systems. Economic assessment of non-sinusoidal energy is a challenging task that involves complex computations of harmonic load powers and harmonic line losses. Design/methodology/approach The paper evaluates fundamental and non-sinusoidal components of electrical energy by applying backward/forward sweep technique in distorted distribution systems. This work involves harmonic power computations at the substation by including harmonic losses occurring in various lines of the distribution system. Findings The paper found that annual energy expenditure significantly depends upon the non-linear load, supply voltage harmonics and type of tariff structure considered in the distribution system. Impact of individual harmonic orders on the energy billing is also assessed. Originality/value The paper concludes that considering harmonic distortions in the distribution system analysis would help electricity regulators formulate adequate pricing structures, which would further generate appropriate economic signals for electricity utility and the consumers.

scholarly journals Analysis and modeling of harmonic distortions in consumer’s distribution networks, containing a powerful non-linear load

2018 ◽  
Vol 58 ◽  
pp. 03015
Author(s):  
N.R. Rakhmanov ◽  
V.G. Kurbatsky ◽  
H.B. Guliyev ◽  
N.V. Tomin ◽  
R.N. Rakhmanov
Keyword(s):  
Power Transmission ◽  
Distribution Networks ◽  
Load Flow ◽  
Nonlinear Load ◽  
Linear Load ◽  
Non Linear ◽  
Random Variability ◽  
Harmonic Components ◽  
Non Linear Load ◽  
Power Harmonics

The paper proposes to simulate a random variability of the nonlinear load in the form of probabilistic characteristics of the amplitudes of harmonic components of powers. The influence of the variability of distribution of amplitude values of the power harmonics on the load flow in the network, power losses and maximum power transmission in lines is studied. The results of design experiments for one of distribution networks of Azerbaijan power system, feeding the non-linear load, are given.

scholarly journals SIMULATION OF A STATIC SYNCHRONOUS COMPENSATOR FOR A POWER SUPPLY SYSTEM WITH A NON-LINEAR LOAD

2020 ◽  
pp. 116-124
Author(s):  
Aleksei V. Makarov ◽  
Valeriy G. Makarov ◽  
Tatiana V. Makarova ◽  
Aleksei A. Petrov
Keyword(s):  
Simulation Model ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Static Synchronous Compensator ◽  
Nonlinear Load ◽  
Electromechanical Systems ◽  
Linear Load ◽  
Non Linear ◽  
Non Linear Load

The purpose of the work is developing a simulation model of factory’s the power system, with a nonlinear load model, which is a 12-pulses thyristor invertor and a model of a static synchronous compensator, which is multi-level voltage invertor, based on H-bridge invertor. Also defining preliminary parameters for the design of a static synchronous compensator in order to meet the requirements for power factors and limits of voltage harmonic and interharmonic distortion specified for the point of common connection to the mains supply. The analytical and numerical methods of mathematical programming and control of electromechanical systems were used. VisualStudio and PSIM software products for developing a control system for electromechanical systems and compiling a simulation model of an industrial power supply system were used. As a result of the research, a simulation model of the power supply system of an industrial enterprise, a model of a nonlinear load and a static synchronous compensator were developed. The rated power of the static synchronous compensator is determined to reduce the consumption of reactive power and the magnitude of the higher harmonics of the current, at the point of common connection, during operating a non-linear load.

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