RESONANT POWER TRANSMISSION SYSTEM FOR THE CREATION OF WI-FI INFORMATION NETWORKS AND RECEIVING OF INFORMATION FROM HOUSING AND COMMUNAL SERVICES

2020 ◽  
Vol 4 (41) ◽  
pp. 29-34
Author(s):  
LEONID YUFEREV ◽  
◽  
ANTON SPOROV
Keyword(s):  
Transmission Line ◽  
Frequency Conversion ◽  
Power Transmission ◽  
Transmission System ◽  
Power Lines ◽  
Research Purpose ◽  
Single Wire ◽  
Transmission Systems ◽  
Power Transmission System ◽  
Power Transmission Systems

Resonant power transmission systems are designed for power supply to remote consumers of small and medium power, as well as for lighting of premises and territories. The systems include frequency conversion devices, power lines, and reverse voltage conversion devices to the required voltage for the consumer. This system can be used for transmitting electricity via power lines to Wi-Fi access points. (Research purpose) The research purpose is in analyzing LPWAN networks, developing a set of equipment for resonant power transmission, calculating the project cost and describing the operation of the resonant system set. (Materials and methods) During the study, the next materials, equipment, and devices were used: a three-phase rectifier with a capacitor filter, an electronic transmission control circuit, power switches and a resonant oscillating circuit (transformer). (Results and discussion) To design and manufacture the installation, authors used the principle of operation of the resonant power transmission system based on the use of two transformers, operating at a frequency of 5-15 kilohertz, and single-wire line between them with a line voltage of 1-10 kilovolts when operating in a resonant mode at which the system operates at a frequency of 7-9 kilohertz, and the voltage in the transmission line of 1500 volts allows to transmit electricity through the single-wire transmission line with a capacity of up to 8,000 watts at a distance of 1.5 kilometers. Authors analyzed the features of the LPWAN network and developed a set of equipment for resonant power transmission, transmitting and receiving units. (Conclusions) The scientific and practical significance of the results is in: a set of resonant power transmission systems, calculated the cost of the project, and the principle of operation of the system.

scholarly journals Electrical Energy Transmission Systems at Elevated Frequency

2019 ◽  
Vol 8 (10) ◽  
pp. 1240-1243
Keyword(s):  
Power Transmission ◽  
Electrical Energy ◽  
Constant Current ◽  
Energy Transmission ◽  
Single Wire ◽  
Transmission Systems ◽  
Power Transmission Systems ◽  
Resonant Systems ◽  
Step Down ◽  
Elevated Frequency

The article presents information about the composition of the equipment of resonant power transmission systems. The resonant systems of electrical energy transmission by single-wire cable or overhead lines at elevated frequency include frequency conversion devices, power transmission lines, and devices for the reverse transformation of electrical energy to the voltage required by the consumer. In contrast to traditional systems of electrical power transmission, resonant systems are being operated on an elevated frequency of 5-15 kHz, a power transmission line voltage is 1-10 kV. In this case resonant transformers are used. The frequency of the power transmission system is set by the resonant transmitting transformer; the receiving transformer is a wideband step-down one.The main components of the resonant transmitting transformer are a power resonant circuit and a step-up/step-down winding. The maximum output power of the converter depends on the voltage supplied to the circuit, circuit voltage, circuit capacitance, frequency, and other parameters. One can change the transmitted power by changing the transmission frequency, for example, for lighting systems.Due to the fact that resonant power transmission systems operating at elevated frequency are less demanding on the grounding quality, they are more efficient compared to single wire ground return line operating at a constant current and an alternating current of commercial frequency

Structural Health Monitoring of Power Transmission System Based on Optical Fiber Sensor Under Transmission Line Galloping

2018 ◽  
Vol 55 (7) ◽  
pp. 070606 ◽  
Author(s):  
谢凯 Xie Kai ◽  
张洪英 Zhang Hongying ◽  
赵衍双 Zhao Yanshuang ◽  
田野 Tian Ye ◽  
吕中宾 Lü Zhongbin ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Optical Fiber ◽  
Transmission Line ◽  
Health Monitoring ◽  
Power Transmission ◽  
Optical Fiber Sensor ◽  
Transmission System ◽  
Fiber Sensor ◽  
Structural Health ◽  
Power Transmission System

Design of Vehicle Power Transmission Systems

1995 ◽  
Vol 117 (B) ◽  
pp. 113-120 ◽  
Author(s):  
J. S. Freeman ◽  
S. A. Velinsky
Keyword(s):  
System Analysis ◽  
Power Transmission ◽  
Transmission System ◽  
Machine Performance ◽  
Analysis Methods ◽  
Power Transmission System ◽  
Power Transmission Systems ◽  
System Analysis Approach ◽  
General Power ◽  
Detailed Assessment

The power transmission system is a critical component of any machine. Accordingly, the detailed analysis of this system is essential for both design purposes and the detailed assessment of machine performance. Due to the large number of possible power transmission system components and the nature of these systems, general power transmission system analysis methods have been difficult to develop. However, such analysis methods could meet a wide variety of needs for system design. This paper discusses the general power transmission system analysis approach developed by the authors over the last several years based on their study of vehicle powertrains. The formulation and solution of the governing equations are discussed, and the ability of the approach in addressing critical design related issues is demonstrated through an example system simulation.

Decision-Making and Support Tools for Design of Transmission Systems

2011 ◽  
pp. 165-175 ◽  
Author(s):  
A. Dolgui ◽  
O. Guschinskaya ◽  
N. Guschinsky ◽  
G. Levin
Keyword(s):  
Decision Making ◽  
Power Plants ◽  
Power Transmission ◽  
Transmission System ◽  
Transmission Systems ◽  
Design Decisions ◽  
Design Procedures ◽  
Product Success ◽  
Power Transmission System ◽  
Sequential Generation

Transmission systems are crucial components of many machines and mechanisms. Ken Hurst (1998) highlights that whether you are designing power plants, cars, or washing machines, the power transmission system is an integral component responsible for product success or failure. The components that comprise a power transmission system include those that transfer power directly (coupling and shaft), speed and torque multiplication components (gears, belt drives, etc.), and the related mechanisms (clutches, brakes, etc.; see Freeman & Velinsky, 1995). Transmission system design is a multistage iterative process of sequential generation and modification of design decisions. These decisions define in many respects the technical and economic characteristics of future products. Searching for suitable design decisions is a highly complex and time-consuming problem due to the necessity to consider and analyze many heterogeneous functional, technical, and economic factors. However, extensive computations, including solving very complex optimization tasks, are needed. As a rule, the design procedures are provided only by a very competent and experienced designer. With ever more complex and combinatorial decisions to be made, even the best designer will need competent design support, of which there is little. Therefore, the design of transmission systems is a wide open area for development and application of decision-making and decision support technologies.

On variational mode decomposition of wind speed for real-time thermal rating determination in power transmission system

2021 ◽  
pp. 0958305X2110339
Author(s):  
Salah K ElSayed ◽  
Mohammad Alsharef ◽  
Mohamed K Metwaly
Keyword(s):  
Wind Speed ◽  
Transmission Line ◽  
Real Time ◽  
Power Transmission ◽  
Weather Conditions ◽  
Transmission System ◽  
Power Transmission Line ◽  
Weather Variables ◽  
Power Transmission System ◽  
Mode Decomposition

Power transmission line capacity is restricted with the maximum temperature that can withstand without inadmissible of line sag. Regardless of the carried current, the temperature of the transmission line conductors was affected by various weather variables. However, the maximum capacity of the line current known as static thermal rating was determined based on the conservative weather conditions for safe operation, but the restriction of the line capacity may be modified which results in the additional capacity of the line. As a result, real-time thermal rating technique was applied on thermal model of the transmission line. Generally, the information about weather conditions is considered uncertainty, however, the weather variables should be dealt with and studied statistically for determining the accurate rise in the conductor temperature. The real-time thermal rating technique is evaluated using weather variables. The most important parameter is the wind speed, which greatly influence s conductor temperature and implicitly affects power transmission line capacity. Thus, in this study, the real-time thermal rating technique is developed by weather variable model based on the variational mode decomposition technique that applied only on the wind speed for adapting wind speed measurements to produce conservative evaluation of convective cooling on the conductors of power transmission system without violating the maximum operating temperature inside the core of conductors. The developed real-time thermal rating is implemented on sections of the power transmission system of western Saudi Arabia. The developed technique is compared with other techniques to investigate its applicability.

Design of Vehicle Power Transmission Systems

1995 ◽  
Vol 117 (B) ◽  
pp. 113-120 ◽  
Author(s):  
J. S. Freeman ◽  
S. A. Velinsky
Keyword(s):  
System Analysis ◽  
Power Transmission ◽  
Transmission System ◽  
Machine Performance ◽  
Analysis Methods ◽  
Power Transmission System ◽  
Power Transmission Systems ◽  
System Analysis Approach ◽  
General Power ◽  
Detailed Assessment

The power transmission system is a critical component of any machine. Accordingly, the detailed analysis of this system is essential for both design purposes and the detailed assessment of machine performance. Due to the large number of possible power transmission system components and the nature of these systems, general power transmission system analysis methods have been difficult to develop. However, such analysis methods could meet a wide variety of needs for system design. This paper discusses the general power transmission system analysis approach developed by the authors over the last several years based on their study of vehicle powertrains. The formulation and solution of the governing equations are discussed, and the ability of the approach in addressing critical design related issues is demonstrated through an example system simulation.

scholarly journals Test results of the resonant single-wire power transmission system for induction heating of the switch rail

2019 ◽  
Vol 78 (1) ◽  
pp. 48-53
Author(s):  
D. V. Ermolenko ◽  
L. Yu. Yuferev ◽  
O. A. Roshchin
Keyword(s):  
Power Consumption ◽  
Heating Rate ◽  
Induction Heating ◽  
Power Transmission ◽  
Heating System ◽  
Power Converter ◽  
Transmission System ◽  
Total Power ◽  
Single Wire ◽  
Power Transmission System

The article provides results of tests of a resonant single-wire power transmission system for induction heating of a switch rail in the organization of train traffic in difficult winter climatic conditions.Laboratory tests have shown the possibility and feasibility of applying heating by an induction method based on a resonant system for transmitting electricity at an increased frequency. Induction heating occurs in the metal due to the excitation of electric currents by an alternating electromagnetic field. With induction heating, only the conductive body is heated, and not the heating element. In the surface layer, called the penetration depth, 86 % of the total power is released, which saves energy. At resonance, active and reactive energy is used.In the experiment a resonant single-wire system for transmitting electrical energy was used to power the induction heaters of the switch rail. Electrical and thermal parameters of the induction heating system were measured. Its advantages over the rail heating system with tubular electric heating elements (TEH) are considered. Developed equipment operates according to the principle of “direct heating”, which allows to increase the heating rate or reduce electricity consumption at the same heating rate as compared to TEH. It is possible to use one power converter for several swi tches. Due to its higher heating temperature combined with relatively low power consumption, it is suitable for use in the northern regions. Developed equipment is connected to AC network with a voltage of 380 V and 50 Hz, operating frequency range is 6–10 kHz, power consumption for heating a single object is 6–20 kW, and the voltage on the transmission line is less than 1 kV.

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