Basic EMC (Electromagnetic Compatibility) Technology Advancement for C3 Systems. Volume 4E. Modeling of Transmission Lines: A Comparison of Lumped-Circuit Iterative Models and the Transmission Line Model

Lightning overvoltage often leads to transmission lines trip, which is the weak link of power system. In this paper, 110-kV transmission line model is studied on the basis of the EMTP software. Several simulation models are established for back flashover lightning, induced lightning, shield failure. The transient process of lightning stroke is studied. According to the contrast of simulation results of three kinds of lightning, a set of discriminant basis to distinguish lightning on transmission line is put forward.

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A Generalized Lossy Transmission-Line Model for Tunable Graphene-Based Transmission Lines with Attenuation Phenomenon

Scientific Reports ◽

10.1038/srep31760 ◽

2016 ◽

Vol 6 (1) ◽

Cited By ~ 8

Author(s):

Yongle Wu ◽

Meijun Qu ◽

Yuanan Liu

Keyword(s):

Transmission Line ◽

Transmission Lines ◽

Transmission Line Model ◽

Line Model ◽

Lossy Transmission ◽

Lossy Transmission Line

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A Non-Uniform Transmission Line Model of the ±1100 kV UHV Tower

Energies ◽

10.3390/en12030445 ◽

2019 ◽

Vol 12 (3) ◽

pp. 445 ◽

Cited By ~ 2

Author(s):

Xianshan Guo ◽

Ying Fu ◽

Jingqiu Yu ◽

Zheng Xu

Keyword(s):

Transmission Line ◽

Transmission Lines ◽

Transmission Line Model ◽

Voltage Level ◽

Line Model ◽

Lightning Strikes ◽

Impedance Model ◽

Electromagnetic Transient ◽

Structure Changes ◽

The Impact

The modeling of the Ultra-High Voltage (UHV) tower plays an important role in lightning protection analysis of transmission lines because the model used will directly affect the reliability of the results. Moreover, the higher the voltage level is, the more prominent the impact becomes. This paper first analyzes the inapplicability of the Hara multi-segment multi-surge impedance model for the ±1100 kV UHV towers, and then builds a non-uniform transmission line model of the tower. Secondly, the multi-segment multi-surge impedance model is used to study the influence of the tower’s spatial structure changes on its electromagnetic transient characteristics. It is concluded that the more accurately the nominal height of the tower is modeled, the more accurately its electromagnetic transient response is reflected. Finally, the lightning electromagnetic transient responses of the tower with the non-uniform transmission line model and with the multi-segment multi-surge impedance model are compared and analyzed, which shows that the non-uniform transmission line model is more in line with the actual situation under the lightning strikes.

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Research of Modeling Method of Transmission Line Information Based on IEC61850

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.713-715.1377 ◽

2015 ◽

Vol 713-715 ◽

pp. 1377-1380

Author(s):

Xue Ming Zhai ◽

Long An ◽

Huan Xia

Keyword(s):

Smart Grid ◽

Transmission Line ◽

Transmission Lines ◽

Data Model ◽

Complete Data ◽

Modeling Method ◽

Transmission Line Model ◽

Line Model ◽

Iec 61850 ◽

Standard Information

Currently the IEC 61850 standard for the transmission line has not been established a complete data model, restricting the development of smart grid. This paper is based on the study of the IEC 61850 standard, and information on major transmission lines were analyzed in detail, in accordance with the standard information of transmission line model based on IEC 61850 was established.

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Model Order Reduction of Transmission Line Model

WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS ◽

10.37394/23201.2020.19.7 ◽

2020 ◽

Vol 19 ◽

Keyword(s):

Transmission Line ◽

Large Scale ◽

Original System ◽

Reduced Order Model ◽

Benchmark Problems ◽

Transmission Line Model ◽

Order Model ◽

Line Model ◽

Reduced Order ◽

Numerical Effort

Transmission Line model are an important role in the electrical power supply. Modeling of such system remains a challenge for simulations are necessary for designing and controlling modern power systems.In order to analyze the numerical approach for a benchmark collection Comprehensive of some needful real-world examples, which can be utilized to evaluate and compare mathematical approaches for model reduction. The approach is based on retaining the dominant modes of the system and truncation comparatively the less significant once.as the reduced order model has been derived from retaining the dominate modes of the large-scale stable system, the reduction preserves the stability. The strong demerit of the many MOR methods is that, the steady state values of the reduced order model does not match with the higher order systems. This drawback has been try to eliminated through the Different MOR method using sssMOR tools. This makes it possible for a new assessment of the error system Offered that the Observability Gramian of the original system has as soon as been thought about, an H∞ and H2 error bound can be calculated with minimal numerical effort for any minimized model attributable to The reduced order model (ROM) of a large-scale dynamical system is essential to effortlessness the study of the system utilizing approximation Algorithms. The response evaluation is considered in terms of response constraints and graphical assessments. the application of Approximation methods is offered for arising ROM of the large-scale LTI systems which consist of benchmark problems. The time response of approximated system, assessed by the proposed method, is also shown which is excellent matching of the response of original system when compared to the response of other existing approaches .

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