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The aim o. The article is to create two models of power line communication. First model is called Multipath model and It is based on identifyin. The transfer function based o. The measured values. Second model is called Transmission line model and It is useful i. The topology o. The network under consideration is known. Both models are useful to ob...
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... Understanding the precise causes of power line failures enables more effective control of the whole network since the high dependability of power transmission lines is one of the key factors that ensures network stability over time [23]. Given these details, it is desirable to model the transmission power lines, which, in addition to offering the chance to confirm any fault occurrence, offer extra significant advantages. ...
The work proposes an original method for modeling and simulating the triggering of 110 kV interconnection power lines in case of common faults, such as transient or persistent faults. Urban and industrial areas, surrounding urban areas, require a high energy consumption that is being supplied through 110 kV overhead power lines, responsible for distributing power to the industrial and domestic consumers. High voltage distribution power lines are most prone to failure, due to their exposure, affecting a large number of consumers if a fault occurs. Faults of power lines in service certify that currently there is no perfectly controllable operation mode in terms of load rating, environmental factors, insulation resistance, or mechanical resistance, which would allow total avoidance of faults, it is only possible to reduce the impact they have on the network as a whole. Mathematical models have been developed to determine the experimental voltage and current responses describing the fault propagation, expressed as a 7th-degree polynomial curve, as a second-order transfer function or as the Gaussian model type. By comparing these mathematical models, the most probable answers that can lead to the development of a control structure for rapid identification of a fault were obtained, with the possibility of triggering the line protection relay. In the final part of the manuscript, the viability of applying artificial intelligence techniques, for the approached fault management application, is proven. The developed control structure evaluates the nature of the fault and determines a faster reaction of the line protection causing an increase in the performance of the distribution service.
... Fig. 4 shows the transmission matrix of a two-port network. The relation between transmitter parameters ( and ) and receiver parameters ( and ) using ABCD matthe rix is as follows [10,[13][14][15][16]: (20) where is the length of the transmission line. Thus, the transfer function of the power line channel model shown in Fig. 4 can be given as [15][16][17][18]. ...
... The relation between transmitter parameters ( and ) and receiver parameters ( and ) using ABCD matthe rix is as follows [10,[13][14][15][16]: (20) where is the length of the transmission line. Thus, the transfer function of the power line channel model shown in Fig. 4 can be given as [15][16][17][18]. ...
Abstract—The Powerline Communications (PLC) technology allows data
transmission through electrical wires. Thus the electrical wiring will represent
a data transmission channel conformable to the physical layer of the open
system interconnection (OSI) model. In this work, the specifications of the Iraqi
electrical network were used to model a high-voltage transmission line using a
transmission (ABCD) matrix and use it as a communication channel for
transmitting data within a narrow band (30-500). The transfer function of the
suggested model was derived and its performance analysis was performed to
evaluate the Line length effect, load impedance ZL and the source impedance ZS
on the channel frequency response. This analysis was done with the help of
Matlab16a simulator program.
... Multiwire models are based on transmission line model described in Franek et al. (2014). Derivation is the same, only sometimes instead of the variables are now matrices: ...
The article describes possibility of extension well known two-wire communication models for multiple wire power line communication model. Power lines are usually solved as three phase lines, sometimes with neutral line and grounding. For the modeling of these phenomena transmission line model is extended. Parameters there are represented by matrices. Finally, the example shows how to use the model to simulate the behavior of the transmission of communication signals over high voltage wires and comparison with two-wire model.
This study develops a technique to extract the wave propagation properties of power cables from impedance spectroscopy. This method extracts the propagation constant, characteristic impedance, phase velocity and RLGC Telegrapher’s Equation parameters. The current study firstly proposes an initial method to extract high frequency cable transmission characteristics by the impedance spectroscopy of open and short ended cables. Using this method, the propagation constant and phase velocity can be extracted accurately. However, the initial method is still problematic. The waveform of characteristic impedance is distorted due to the additional impedance of connection wire between measuring devices and the tested cable. Therefore, this study proposes a modified method, which can eliminate the influence of additional impedance and acquire the high frequency cable transmission characteristics accurately. By obtaining the series impedance from cable geometry parameters and getting propagation constant from impedance spectroscopy, the modified method can obtain the characteristic impedance by combining the series impedance and the propagation constant. The extraction is demonstrated for a YJV-8.7/15 kV 1*35 XLPE cable in the frequency range 300 kHz to 100MHz.
This paper describes smart energy meter electronics design and implementation with later realization with real time operating system FreeRTOS. The main areas to use this energy meter are charging stations (stands) for electric vehicle (follows as EV) charging support and possible embedding into current smart building technology. In described module there was required measurement of voltage, electric current and frequency of power network. After integration into smart buildings (home automation, parking houses) there are pros and cons of such solution mentioned.
