Modeling Power Supply Induced Jitter in a Voltage-Mode Driver with Long Transmission Lines

This paper presents first-order voltage-mode filters using a single current conveyor with an additional X-stage, and passive elements. The new circuits have multifunction capability, and also realize low-shelf, high-shelf and band-shelf functions. The study is carried out on the effects of non-idealities, parasitic elements, and loading on the performance of proposed circuits. Active and passive sensitivities are also analyzed. The active element, extra-X current conveyor used for designing new circuits is simpler than most of the one active element and two passive elements’ based circuits. Detailed comparisons are carried out with relevant available works, and the new circuits are found to be more compact and exhibit higher frequency performances. The simulation results using 0.25[Formula: see text][Formula: see text]m CMOS parameters with [Formula: see text]1.25[Formula: see text]V power-supply are shown to verify the proposed circuits. The proposed circuits are also verified through simulations. Experimental support is given using AD-844 ICs to strengthen the validity of the proposed circuits.

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Relay protection and automation of electric power systems

10.12737/1048841 ◽

2021 ◽

Author(s):

Sergey Goremykin

Keyword(s):

Power Systems ◽

Electric Power ◽

Transmission Lines ◽

Power Supply ◽

Power Transmission ◽

Relay Protection ◽

Electrical Equipment ◽

Electric Power Systems ◽

Federal State ◽

Advantages And Disadvantages

The textbook describes the main issues of the theory of relay protection and automation of electric power systems. The structure and functional purpose of protection devices and automation of power transmission lines of various configurations, synchronous generators, power transformers, electric motors and individual electrical installations are considered. For each of the types of protection of the above objects, the structure, the principle of operation, the order of selection of settings are given, the advantages and disadvantages are evaluated, indicating the scope of application. The manual includes material on complete devices based on semiconductor and microprocessor element bases. The progressive use of such devices (protection of the third and fourth generations) is appropriate and effective due to their significant advantages. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for students in the areas of training 13.03.02 "Electric power and electrical engineering" (profile "Power supply", discipline "Relay protection and automation of electric power systems") and 35.03.06 "Agroengineering" (profile "Power supply and electrical equipment of agricultural enterprises", discipline "Relay protection of electrical equipment of agricultural objects"), as well as for graduate students and specialists engaged in the field of electrification and automation of industrial and agrotechnical objects.

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Analysis of mathematical models of transmission lines.

Journal of Electrical and power engineering ◽

10.31474/2074-2630-2020-2-16-19 ◽

2020 ◽

Vol 23 (2) ◽

pp. 16-19

Author(s):

G. SHEINA ◽

Keyword(s):

Mathematical Model ◽

Power Systems ◽

Transmission Lines ◽

Power Supply ◽

Power Supply System ◽

Power Transmission ◽

Supply System ◽

Power Lines ◽

Power Transmission Lines ◽

The Mathematical Model

This paper investigates a mathematical model of one elements of the power supply system - power transmission lines. The type of models depends on the initial simplifications, which in turn are determined by the complexity of the physics of processes. The task of improving the accuracy of modeling of emergency processes in the power system is due to the significant complexity of modern power systems and their equipment, high-speed relay protection, automation of emergency management and the introduction of higher-speed switching equipment. One of the reasons for a significant number of serious emergencies in the system is the lack of complete and reliable information for modeling modes in the design and operation of power systems. The development of a mathematical model of a three-phase power line, which provides adequate reflection of both normal and emergency processes, is relevant. The advanced mathematical model of power transmission lines allows to investigate various operational modes of electric networks. The improved mathematical model of the power transmission line reflects all the features of physical processes at state modes and transient process and provides sufficient accuracy of the results. The type of mathematical model of power transmission lines depends on the accepted simplifications, depending on the task of research. The purpose of this work is to analyze the mathematical model of the power transmission line to study the modes of operation of the power supply system, with the possibility of its application to take into account all the design features of overhead and cable power lines. The mathematical model of the power line for the study of the modes of operation of the power supply system is analyzed. It is used to take into account the design features of overhead and cable power lines, skin effect.

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Powering Multiple Gas Condensate Wells in Russia’s Arctic: Power Supply Systems Based on Renewable Energy Sources

Resources ◽

10.3390/resources9110130 ◽

2020 ◽

Vol 9 (11) ◽

pp. 130

Author(s):

Gennadiy Stroykov ◽

Alexey Y. Cherepovitsyn ◽

Elizaveta A. Iamshchikova

Keyword(s):

Renewable Energy ◽

Transmission Lines ◽

Power Supply ◽

Power Transmission ◽

Renewable Energy Sources ◽

Operating Conditions ◽

Gas Condensate ◽

The Arctic ◽

Power Transmission Lines ◽

Power Sources

Using renewable energy off-grid power supply and choosing the right equipment that meets the operating conditions in the Arctic can provide companies with reliable power sources for producing gas at facilities located in remote areas and will reduce capital and operating costs associated with the construction of power transmission lines. For more than 15 years, a remote control system powered by renewable energy has been used in parallel with power transmission lines by Gazprom to operate its multiwell pads in Russia’s Far North, which validates the relevance of this study. The subject of the study is a group of gas condensate wells that consists of four multiwell pads operated by Wintershall Russland GmbH. The article discusses a stand-alone renewable-based power system as an option for powering remote oil and gas production facilities. The procedures used in the study include calculating such parameters as power output and power consumption, choosing equipment, describing the design features of a power supply system for a multiwell pad, conducting an economic assessment of the project, comparing different power supply options, analyzing project risks, and developing measures to mitigate these risks.

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Insulator Segmentation for Power Line Inspection Based on Modified Conditional Generative Adversarial Network

Journal of Sensors ◽

10.1155/2019/4245329 ◽

2019 ◽

Vol 2019 ◽

pp. 1-8

Author(s):

Zishu Gao ◽

Guodong Yang ◽

En Li ◽

Tianyu Shen ◽

Zhe Wang ◽

...

Keyword(s):

Transmission Lines ◽

Power Supply ◽

Power Transmission ◽

State Of The Art ◽

Power Line ◽

Power Transmission Lines ◽

Generative Adversarial Network ◽

Convolutional Network ◽

Adversarial Network ◽

Feature Information

There are a large number of insulators on the transmission line, and insulator damage will have a major impact on power supply security. Image-based segmentation of the insulators in the power transmission lines is a premise and also a critical task for power line inspection. In this paper, a modified conditional generative adversarial network for insulator pixel-level segmentation is proposed. The generator is reconstructed by encoder-decoder layers with asymmetric convolution kernel which can simplify the network complexity and extract more kinds of feature information. The discriminator is composed of a fully convolutional network based on patchGAN and learns the loss to train the generator. It is verified in experiments that the proposed method has better performances on mIoU and computational efficiency than Pix2pix, SegNet, and other state-of-the-art networks.

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